جستجوی مقالات مرتبط با کلیدواژه « بهسازی و مقاوم سازی » در نشریات گروه « عمران »

The necessity of attention to the sustainable development in civil engineering for the progress of modern societies has highlighted concrete as the most widely used construction material for researchers. In this way, Ultra High Performance Concrete (UHPC) has been highly appreciated as one of the newest inventions in the field of concrete technology. The purpose of this article is to: 1- depict outstanding properties of UHPC that make its utilization in construction, rehabilitation and strengthening projects efficient and 2- promote the application of UHPC in bridge engineering in the national scale relying on extensive domestic studies in order to localize it. Much effort has been made to present a comprehensive report on innovations and gained experiences in the field of using UHPC in the bridge industry during the last two decades in all parts of the world and investigate the main direction of future research pointing to the key constraints of the widespread use of this material for constructing and maintaining bridges.

In general, there are various reasons for the rehabilitation of structures, including earthquake-damaged buildings and buildings that are not adequately resisted due to changes in the rules of the building regulations or buildings whose use has been changed. In this regard, engineers and researchers of the country are trying to obtain the best solution with the lowest cost and highest reliability coefficient using computational methods. Due to the fact that some of the existing structures in the city of Kazeroon do not have the characteristics of an earthquake resistant structure, and most of them are constructed in accordance with the provisions of the second edition of Iran's earthquake before and after it, it is necessary to review them, Action. To be followed up with appropriate solutions, refurbish it. In this research, we first analyzed and evaluated the seismic retrofitting methods of conventional RC structures that were studied in Kazeroon city and then, using expert's opinion, and distributed and collected and analyzed by purposeful questionnaire and TOPSIS method To prioritize the appropriate method for seismic retrofit of conventional reinforced concrete buildings in Kazeroun city. The results of this research indicate that the main priorities of retrofitting of conventional reinforced concrete buildings in Kazeroon are steel armored vehicles, concrete armored concrete and concrete shear walls and the use of FRP.