جستجوی مقالات مرتبط با کلیدواژه « دیوار برشی فولادی » در نشریات گروه « عمران »

Using steel shear walls is one way to increase the lateral load-carrying capacity of reinforced concrete moment-resisting frames and have been gaining the interest of researchers due to their excellent performance in earthquakes and ease of construction. In these shear walls, connection to the frame and force transfer between the wall and the frame are of particular interest. In this study, the connection type of these walls and transfer of forces between them and the frame via bolts were examined and controlled using the ABAQUS software. For this purpose, a two-story concrete frame equipped with steel shear walls was evaluated after verifying the numerical model. The frame was assessed under two connection conditions: the ideal state, in which the shear wall is fixed to the beam, and the realistic state, in which these shear walls are attached to the beam using connecting plates on the beams and bolts at the top and bottom of the beam. To design the bolts, first, the prestressing force needed to prevent sliding should be calculated, according to which the prestressing force and the bolts can be designed. Also, the simultaneous effect of tension and shear should be taken into account in the bolts design. .After designing the bolt diameter and prestressing force, the behaviors of the frame were compared in both cases. The numerical analysis revealed that the load-displacement behaviors in both cases were almost identical. Furthermore, the stress in the bolts in the second state was found to be lower than their strength, indicating that the bolt design method is safe and suitable for transferring forces between the shear wall and the reinforced concrete structural frame in floors. Also, by designing the bolt and its prestressing force according to the method of this paper, it is ensured that no slippage between the concrete and the connection plates occurs until the end of loading.

The steel plate shear wall (SPSW) as a lateral bearing system in high-rise buildings has been focused in recent decades. Today, these lateral bearing members with high ductility, high energy absorption, and high initial stiffness are used in new buildings as well as rehabilitation of existing buildings, especially in earthquake-prone countries. The use of stiffeners in the SPSW reduces the thickness of the infill plate, and increases the strength and stiffness of the SPSW. The aim of this study is to present a new arrangement for stiffeners with high performance in order to achieve higher shear strength and lateral stiffness. For this purpose, after validating the numerical modeling, several SPSWs with common (horizontal-vertical and diagonal arrangement) and proposed arrangement (diagonally along with horizontal-vertical) of stiffeners were modeled in Abaqus finite element software and were subjected under monotonic and cyclic loads. The results showed that the suggested arrangement provided more confinement for the infill plate and enhanced the final shear strength of the SPSW by 47.5%.

The performance evaluation of structures, particularly steel structures against blast loads, is of great importance. One important prediction for dealing with destructive lateral forces in structures is the application of structural steel framing systems. In this study, seven samples of lateral load-resisting systems were developed in a five-story steel structure, considering the provisions of Standard 2800. Using ABAQUS and SAP2000 software, numerical analysis was performed on these systems under blast loads. An aerial explosion was considered, with an explosive material quantity of 200 kg in terms of T.N.T, located at a distance of 2 meters from the centerline of the beam-column connection, in a height of 2.8 meters from the ground level. The results showed that in all models, the adjacent column to the explosion source experienced severe deformation, and plastic damage occurred in the connection region. Additionally, the stresses in the beam web and connection plates at the base of the column reached their maximum values. This occurrence was less observed in moment frame models, while special moment frames and intermediate moment frames demonstrated better performance. In various shear wall models, no plastic damage was observed at the base of the adjacent column to the explosion source, and the energy absorption per unit weight of the structure was obtained. Consequently, the special moment frame had the highest energy absorption capacity, and the lowest was associated with the concentric moment frame.

To make structures resistant to earthquakes, various systems are used, one of the most important of these systems is a steel Moment frame with a steel shear wall, which has been used as one the systems since the 1970s. Steel shear walls are usually made in two types, stiffened and unstiffened. The idea of corrugated steel shear walls was proposed as a replacement for stiffened shear walls. These plates have high buckling resistance due to their out-of-plane stiffness. This research investigated the seismic behavior and vulnerability of steel structures with horizontally and vertically corrugated steel shear walls using ABAQUS nonlinear analysis software. For this purpose, after validation of the modeling by controlling with an experimental study, 280-time history analyses were conducted. Then fragility curves were produced on 3 and 10-story structures.7- acceleration records of the far-Fault earthquakes and 7 acceleration records of the near-fault earthquakes were used to generate the fragility curves. The results showed the 3-story structure suffered damage at a lower acceleration compared to the 10-story structure. The structure was more fragile under near-fault rather than far-fault earthquakes. The highest percentage of damage reduction in the far-fault earthquakes compared to the near-fault occurred in the 10-story structure at the life safety performance level (LS). Further in trapezoidal samples, by changing the direction of placement of corrugation plates from horizontal to vertical, the probability of wall failure decreased at different PGA levels.

Investigation of the nonlinear behavior of SPSWs requires complex non-linear finite element analyses. These analyses have some drawbacks namely convergence problems, time-consuming, and the need for expertise. Therefore, it is necessary to propose a comprehensive method that can solve the problems of current methods. In this research, a novel approach based on the use of axial members to evaluate the nonlinear behavior of SPSWs with any arbitrary configuration is developed. The innovation of the proposed method is that the obstacles in modeling of shear walls with different shapes and aspect ratios have been solved. Moreover, due to the low computational cost of this method, i.e., a 60% reduction in modeling time, and a saving of 92% and 66% in analysis time in static and cyclic loading, respectively, full-scale structures can be analyzed with acceptable accuracy. In addition, owing to its comprehensiveness, this method can be placed in existing commercial software, or it is possible to be developed as software. To evaluate the efficiency of the proposed method, 4 different SPSWs with different mechanical and geometric characteristics were analyzed using the proposed method. The results showed a good agreement between the outputs of the proposed method and the actual behavior of the SPSW, which verifies the suitable performance of the method. The results of analysis using the proposed method indicated that the maximum shear stress ratio occurs at the lower H/L and thickness. In addition, increasing the thickness and H/L of the infill results in an increase in the shear that can be tolerated by the section as well as a reduction in the stress ratio. The average of reduction for an increase in thickness and H/L is 61.8% and 72 %, respectively.

The steel shear wall is an efficient lateral load-bearing system for steel and concrete structures. These members have been gaining interest because of advantages such as high stiffness, fewer architectural limitations, light weight, and lower footprint in plan. When shear walls are used in a semi-continuous state in the structure, it is possible to consider an opening in the span without creating a hole in the shear wall. In the present study, numerical research was performed on the behavior of concrete frames containing a steel shear wall with a semi-continuous connection to the frame. First, the numerical model was validated using an experimental specimen. Then, by performing 33 nonlinear static analyses, the effect of the wall width and thickness on the seismic behavior of concrete frames was investigated. Similarly, the width of the wall was considered to vary from 10 to 110 cm in 11 cases. In addition, the shear wall thickness was examined in 3 cases of 1, 2 and 3 mm, respectively. The outputs of the frame included energy loss, lateral stiffness, strength, and ductility of the frame. To calculate the shear wall stiffness, a formula was presented using the curve fitting technique based on numerical results. By using this formula, the wall stiffness can be estimated with good accuracy using its width and thickness. After comparing the results, it was observed that when the shear wall width in the frame was selected correctly, not only the stiffness and lateral strength of the frame increased, energy loss and ductility of the frame were 2.7 and 1.7 times those of the plain frame, respectively. By considering the ratio of the shear wall width to the frame span equal to 0.38, a proper width can be obtained for the shear wall.

In the present study, the cyclic behavior of steel plate shear wall of a three-story steel frame equipped with added damping and stiffness (ADAS) dampers was evaluated. In this study, with the aim of investigating and improving the performance of the steel plate shear wall against lateral forces, the proposed dampers were applied in the distance between the columns and the steel plate shear wall infill plates. The parameters studied include the thickness of the damper sheet (8, 10, 12, 14 and 16 mm) and the thickness of the infill plate (3, 4, 5 and 6 mm) respectively. Evaluation of cyclic behavior of steel plate shear wall was performed using finite element method via ABAQUS software and the loading protocol based on ATC-24 was applied. In order to verify, the experimental specimen was simulated by ABAQUS software and it was observed that the experimental specimen and the finite element model are in good conformation and the finite element model can be applied to study and compare the parameters considered in this study such as energy dissipation, strength, stiffness and ductility. The results showed that as the thickness of the damper sheet increased, the energy consumption in the steel plate shear wall system increased from 12 to 66 percent compared to the model without dampers. Also, by reducing and increasing the thickness of the infill plates in the second and third floors compared to the model without dampers, we saw an increase in energy consumption from 52 to 64 percent compared to the model without dampers, which indicates the good performance of the dampers. The strength of the steel plate shear wall system increased from 2.40 to 3.14 times by considering different thicknesses for the damper compared to the model without damper, and further by considering the infill plates for the steel plate shear wall system. We saw an increase in strength from 2.30 to 2.81 times compare to the model without damper. The stiffness level of each steel plate shear wall model was investigated and compared, and we saw an increase in stiffness from 76 to 99 percent compared to the model without damper. Also, considering the thickness of different infill plates for the steel plate shear wall system, the stiffness increased from 82 to 98 percent compared to the model without damper. As the thickness of the damper sheets increased, the ductility increased from 2.32 to 2.55 times compare to the model without damper. Also, considering the thickness of different infill plates for the steel plate shear wall system, we saw an increase in strength from 2.29 to 2.55 times compare to the model without damper. Further, by examining the hysteresis curves and the hysteresis damping ratio of different models, it was evident that the models equipped with dampers are significantly superior to the models without dampers, and as the thickness of the dampers increased, the area under the curve of each model increased. As a result, the larger this level is, it indicates that the member is more malleable and has the ability to absorb more energy. Finally, the performance of the proposed dampers was investigated along with the damper failure mechanism. The results showed that ADAS dampers with their special deformations, significantly increase energy consumption and make the steel plate shear wall more malleable and by absorbing a large amount of energy they reduced the force applied to the main components and prevented the destruction of the steel plate shear wall.

Steel plate shear walls (SPSWs) are one of the most important and widely used lateral load-bearing systems. The reason for this is easier execution than reinforced concrete (RC) shear walls, faster construction time, and lower final weight of the structure. However, the main drawback of SPSWs is premature buckling in low drift ratios, which affects the energy absorption capacity and global performance of the system. To address this problem, two groups of SPSWs under cyclic loading were investigated using the finite element method (FEM). In the first group, several series of circular rings have been used and in the second group, a new type of SPSW with concentric circular rings (CCRs) has been introduced. Numerous parameters include in yield stress of steel plate wall materials, steel panel thickness, and ring width were considered in nonlinear static analysis. At first, a three-dimensional (3D) numerical model was validated using three sets of laboratory SPSWs and the difference in results between numerical models and experimental specimens was less than 5% in all cases. The results of numerical models revealed that the full SPSW undergoes shear buckling at a drift ratio of 0.2% and its hysteresis behavior has a pinching in the middle part of load-drift ratio curve. Whereas, in the two categories of proposed SPSWs, the hysteresis behavior is complete and stable, and in most cases no capacity degradation of up to 6% drift ratio has been observed. Also, in most numerical models, the tangential stiffness remains almost constant in each cycle. Finally, for the innovative SPSW, a relationship was suggested to determine the shear capacity of the proposed steel wall relative to the wall slenderness coefficient.

In the present study, the feasibility of ensuring uniform deformations in the lateral bearing system of thin steel shear walls has been investigated. For this purpose, using ABAQUSTM finite element software, a 3-story concrete frame was modeled and analyzed by the nonlinear time history analysis method. Due to the lower weight, speed of execution and consequently the reduction of construction costs in steel shear walls compared to reinforced concrete shear walls, they have been significantly developed. In important buildings in North America and Japan, this type of lateral bearing system has shown very good behavior against strongly earthquakes. Also, due to the good performance of steel shear wall systems, the use of steel shear wall in seismic countries during earthquakes in North Ridge, USA, Kobe and Japan has greatly increased. The system of steel shear walls is similar in performance to plate girder. In steel shear walls, the columns act like flanges, the filler steel plate acts as the web and beam similar to the stiffeners in the plate girder system. In general, the performance of steel shear walls is based on the creation of a diagonal tensile field in the steel plate that occurs after buckling. In 2003, the Canadian Steel Structures FEMA 450 proposed guidelines for the design of steel shear walls. In 2005, the design requirements for steel shear walls with special details were added to the steel structures section of the AISC Regulation. According to ASSHTO 2018 regulations, steel plates are divided into three behavioral ranges slender, moderate, and stocky according to their thickness. In 2021, during research, a new method for evaluating the behavior of steel shear walls with the relationship of part of the plate height to the vertical boundary elements was reviewed. In this type of connection, the middle of the filler plate was not connected to the vertical boundary elements. In this type of connection, reducing the connection length between the filler plate and the vertical elements leads to a reduction in stiffness and bending on the vertical boundary elements. In this paper, three different thicknesses were selected in the behavioral range of slender plates and how to connect them to the surrounding elements was defined in whole and in partial. In this evaluation, the effect of changing the connection length of the steel plate for the range of slender plates is investigated. The connection of steel shear walls to the surrounding members (beams and columns) is based on the percentage of the shear plate and the connection length ratio of steel plates are examined on the maximum relative in-plane displacement (drift) and the displacement of all stories. Uniform distribution of live and dead loads for the roof floor 1 and 5.3 (KNm2) respectively and for the other floors equal to 2.5 and 5.5 (KNm2) respectively is assumed. The behavior of the frame in the first stage is evaluated by the record of the Kobe earthquake. The results showed that in general, reducing the length of the plate connection leads to an increase in the maximum relative in-plane displacement (drift) of the stories and it is possible to control the ductility of the structure. 0. 6  is the critical area for a sender plate 5 mm. Because due to the early buckling and the occurrence of resistance after buckling, the maximum relative in-plane displacement (drift) has decreased. Also, 0.6 and CLR≥0 / 75 introduced as critical areas for 2 mm and 8 mm plates, respectively. In slender plates with very small thicknesses, the shear strength is very low and can be ignored, and the plate enters the post-buckling resistance immediately after loading. For this reason, the results of these plates determine the behavior of the structure. By reducing the thickness, the non-uniformity in the maximum relative in-plane displacement (drift) of the stories was seen, which was significantly improved by using suitable partial connections of the shear steel plate to the surrounding elements.

Though steel shear walls have proven effective, they are limited due to the opening on their bay. To address this, coupled shear walls can be used. Consequently, there has been widespread use of corrugated sheets in the steel shear walls for low- and mid-rise buildings. However, there are limited studies on coupled shear walls. Hence, as a symbol of low- and mid-rise buildings, this study utilized Abaqus software to model samples of coupled steel shear wall 3-, 6-, and 12-story buildings. Under push over-analysis of up to 4% roof drift, the study investigated how trapezoidal corrugated steel plate with vertical and horizontal waves impact four key factors: bearing capacity, energy dissipation, degree of coupling, and behavior coefficient, and ductility ratio of the coupled steel shear wall. In the models, the study assessed the effect of increasing both the cross-sectional area of coupling beam and coupling beam's length. The results demonstrate that vertical and horizontal corrugated sheets cause a reduction of three factors: the base shear, degree of coupling, and energy dissipation. Besides, behaviour coefficient and ductility ratio decreases in the vertical corrugated sample and increases in horizontal corrugated sample. Furthermore, increasing the beam's length or cross-sectional area causes a decrease in four factors: the bearing capacity, coefficient of behaviour, ductility, and energy dissipation ratio. The degree of coupling decreases in the vertical corrugated samples and increases with the horizontal wave. Moreover, the degree of coupling increases in both cases of flat and corrugated steel sheets, increasing the number of stories.

Seismic performance is one of the most important factors in designing of structures. Lateral load bearing systems in structures are responsible to transfer lateral loads into the ground. Steel plate shear wall as a load bearing system in structures has some advantages such as easy and fast implementation, being economical, repairable, changeable and applicable on existing structures. Therefore, more research on these systems can help to design and retrofitting of existing structures. There are two general types of steel plate shear wall: stiffened and unstiffened. In this study, it is tried to determine the best geometrical shape of steel plate shear wall in terms of seismic performance. Material volume which are applied in all models are the same in order to compare their seismic performance in an equal circumstances and this is the innovative aspect of this study. Seven different stiffened and unstiffened steel plate shear walls are modeled using FEM in this paper. All models are analyzed with non-linear static analysis and linear incremental and cyclic loading. It is investigated that stiffened models had better performance in terms of seismic behavior in comparison with unstiffened models. These models also had more stiffness, more ductility and they absorb more plastic energy. Proposed models with new and innovative forms had better seismic performance, higher stiffness, higher strength, higher plastic energy absorption and higher ductility compare to usual stiffened models. In addition, these models had controlled out of plane displacement and better stress distribution.

A better understanding of the dynamic behavior and seismic performance of structures has led to advances in structural design in recent years, but despite recent advances, many existing structures are not earthquake resistant. Steel Moment Resisting Frames (SMRFs) are one of the common structural systems in construction that has been considered by engineers due to its ease of implementation, relatively good seismic behavior and architectural considerations. However, Steel Moment Resisting Frames, in addition to being costly and performing defects in joints, has a low lateral stiffness compared to other strong systems and does not have good resistance to high horizontal displacement and structural and non-structural elements are exposed to damage. Near-fault Earthquakes are among the factors that increase damage to the structure and also intensify lateral load intensity. In this paper, the seismic behavior of SMRFs with and without Steel Plate Shear Walls (SPSWs) against 40 artificial near and far fault seismic records are evaluated using nonlinear time history analysis. For this purpose, 8-, 15- and 20- story frames were designed without considering the permissible drift criteria. Then, a steel shear wall was added to the frames and while redesigning, the drift criterion was met. The results show that in both cases with and without SPSWs the need for seismic near the fault sequences is greater than the far fault seismic sequences. The presence of SPSWs reduces the need for deformation (except for absolute floor acceleration), and this effect is more pronounced for near faults scenarios. In all cases, the presence or absence of SPSWs has no effect on the maximum floor acceleration. Adding SPSWs always increases the need for base shear force, but the force is still more significant from near fault than far fault scenarios. The results of comparing the effect of successive earthquakes near and far from the fault show that near-fault earthquakes always act to increase the need for the structure.

Deformed memory alloys due to special behaviors such as superelastic behavior (complete recovery of strain during loading and unloading in the form of a hysteresis curve) and memory behavior (recovery of strain during heating due to phase transformation from stable phase to low temperature to stable phase At high temperatures) has attracted the attention of researchers in the last decade. In addition to the above behaviors, these materials have other suitable properties such as high resistance to fatigue and corrosion, stability of its behavior-strain and energy dissipation ability. One of the ways to manage damage in the structure and reduce seismic needs is to use rocking systems. In these systems, relative motion occurs mainly between the legs of the columns and their corresponding foundations, where energy absorbers are made. In the rocking motion of the body, the structure deforms to an elastic level and moves almost as a rigid body, and after the earthquake, the weight of the building causes the structure to return to its original place.

Sequential earthquakes have severe destruction on structures, including the accumulative structural and non-structural damage, compared to single earthquakes and due to the lack of sufficient opportunity to repair of the structure, the possibility of structural damage increases. In this research, the effect of seismic sequence on the relatively new system of reinforced concrete frames equipped with steel plate shear walls has been investigated. Based on this, four system of 4, 8,12and 24 stories, which represent short, intermediate, tall, are modeled in finite element software and subject to four sets of single and sequential earthquake and with a variety of application methods. Sequential earthquakes, including real, repetitive and randomized methods, are subjected to nonlinear dynamic dynamic analysis under four sets of single and sequential acceleration. The seismic scenarios used include sequential recorded critical earthquakes. The analysis showed that the predominant period of the aftershock significantly influences the post-mainshock response. Real seismic sequence increases the tatio of peak interstory drift by an average of 2 times the similar demand in a single earthquake and increases the ratio of maximum ductility demand by 1.52 times in the structure.In artificial sequence, the ratio of peak maximum interstory drift demand increase is in 100%, 150% and 200% aftershocks, In the iteration method, it is equal to 1.2, 2.0 and 2.6 times the single earthquake. Aftershocks may change the direction and magnitude of residual displacement in real and artificial seismic sequences. Continuation of the equation to calculate the demand for seismic sequence ductility was extracted.

The perforated steel plate shear wall is one of the different lateral load resisting systems. The steel plate shear wall system contains two rectangular openings, the middle panel between two openings has a major role in the energy absorption. In this paper, considering the middle panel similar to the link-beam of EBF and reviewing the existing theoretical formulas for anticipating the middle panel behavior, a new condition related to the stiffness of web plate and stiffeners, which are located on the surrounding opening is added. The results show that the new added condition helps better identify the behavior of the middle panel and to separate the boundaries of behavior type. In addition, a formula with high accuracy is determined to calculate the shape factor of a section with box-shaped flanges. Furthermore, in accordance with obtained diagrams from triple conditions, the effects of six dimension parameters on the behavior of the middle panel are investigated and the bounds of changing the behavior type of the middle panel are determined. The results of the theoretical study show that the 64% increase in width, 47%, and 32% decrease in height and plate thickness of middle panel respectively and 100%, 14%, and 122% increase in height of web, flange width, and thickness of box stiffeners respectively changed the behavior type of middle panel from flexural-dominant to shear-dominant. These obtained results were calculated only in the case of examining the relevant parameters.

Due to lack of sufficient concrete strength or change in design guidelines, some RC structures are in need of retrofitting. RC moment resisting frames can be retrofitted through various methods such as different types of braces, steel jackets, steel or concrete shear walls, etc. Retrofitting the structure and reassessing it is only possible if the characteristics of the new compound seismic system are known. In this study, the behavior of the RC moment resisting frame retrofitted with inclined members mesh and steel shear walls in the face of cyclic lateral load is investigated. Three specimens of RC moment resisting frames of the scale 1:3, with identical dimensions, reinforcement and concrete strength were built. Two of the specimens were retrofitted with steel shear walls or inclined members mesh, using the same amount of steel. Finally, stiffness, strength reduction factor, ductility, strength and energy absorption of the samples were calculated and compared. The results show that both retrofitting methods improve the seismic properties of the structure but the inclined tensile member mesh yielded a better performance compared to the steel shear wall. While carrying out the linear or nonlinear analyses of the retrofitting of RC frames, special attention should be paid when equalizing steel shear walls with inclined tensile members due the difference between their stiffness.

Although steel plate shear walls have the inherent advantages of formability and increasing the energy absorption of the lateral load system, there are some shortcomings such as buckling in the early stages of loading and high demand for shear force of the column. In order to address these cases, a new moment connection using steel trapezoidal plate in the form of numerical models of steel shear wall system under monotonic loading and cycles is presented. The main aim of this study is to provide a system of low-thickness steel shear wall that has the same capacity and energy absorption in accordance with the direct connection sample, while at the same time concentrate the plastic joint area on the connection plate. The connection plate acts like a fuse. In spite of conventional steel shear wall systems, the connection of the steel wall plate to the column has not been established and vertical lateral stiffeners have been used to improve its performance. Also, three different thicknesses used for the connection plate. The finite element numerical model was validated with eight test specimens and a good accuracy was established in terms of load-bearing capacity, elastic stiffness, and failure mode. The results of nonlinear static analyses on the developed models showed that the use of the connection plate was able to act as an energy-absorbing member and prevent the boundary elements from entering the plastic status. Therefore, the use of lower cross-section of column elements is possible. There is also no need to follow a weak beam- strong column rule and to use continuous or doubler plates in the panel zone of the column. Finally, it was found that the relationships presented in the AISC regulations are less than 7% to 25% for estimating the angle of the tensile field and the shear capacity.

It is necessary to provide seismic design criteria for structural systems in order to optimally design bending reinforced concrete frames with steel shear wall. Researchers have used energy requirements as one of the most important and efficient tools to measure and minimize cumulative damage to structures, which depend strongly on the time and duration of the earthquake. Therefore, this study attempts to investigate the energy response properties of an equivalent single degree of freedom versus near pulse species acceleration accelerometers to estimate the maximum energy types and its relation to a multi degree of freedom for three reinforced concrete structures with steel shear walls, low-rise, mid-rise and high-rise under ductile coefficients of 1, 2, 3, 4 and 5. The results of the study of the changes in the ratio of cyclic energy to total energy wasted in the structures show that in the multi-degree system the period is independent of the periodicity to the extent that the effect of higher modes is negligible. Also, by increasing the ductility coefficient, this ratio for the multi-degree system is closer to the results of the one-degree system and, in a sense, increasing the ductility coefficient results in a decrease in the effects of higher modes.

Nowadays, with the spread of terrorist attacks in many parts of the world, the design approach to abnormal loadings, such as a blast load, has also become noted of design regulations. In recent years, the dual moment-resisting frame system with steel plate shear wall has been used in the design of structures as a load-bearing system and has several advantages such as low construction cost, rapid installation, high energy absorption potential, suitable ductility, Increasing stiffness and decreasing displacement have made the steel plate shear wall as a proper system for retrofing existing structures, so it is necessary to investigate the behavior of this system against blast loads. In this study, moment-resisting frame structures with and without steel plate shear wall (3, 6 and 9-story) were designed in 3D by ETABS software based on code guidelines and then two-dimensional side frame was extracted in order to be analyzed under the effect of blast loading in 2 scenario such as in-plane and out-plane frame with finite element ABAQUS software and finally the possibility of occurrence progressive collapse were investigated and compared. The results of the present study showed that steel plate shear wall dual system has a suitable performance in comparison to moment-resisting frame in the scenario "in-plane blast loading". It restricted the progressive collapse potential while in the scenario "out-of-plane blast loading" because of the blast load wave propagation in steel plate shear wall, then the moment frame has a better performance. Also, according to the Robustness Index (RI) comparison, with regarding to the in-plane and out-of-plane blast loadings, the steel plate shear wall and moment-resisting frame structures had the best performance, respectively.

As yet, various systems have been proposed to withstand lateral loads caused by wind and earthquakes, which can be called bending frames, types of braces, concrete shear walls, types of energy consuming systems. The most important parameters that are considered in choosing a system resistant to lateral loads are: hardness, strength, ductility. Steel shear walls, which are used in both smooth and reinforced forms, are a relatively new system for lateral wind resistance, and studies by researchers over the past four decades have shown that thin shear walls are a suitable and economical bracing system. Due to their geometric shape, corrugated sheets have a higher hardness and ductility than flat sheets. In this laboratory study, the stiffness, strength and shear base of a smooth and corrugated shear wall of vertical trapezoids with a wave angle of 45 ° under cyclic loading have been investigated.