جستجوی مقالات مرتبط با کلیدواژه « حفاظت از میراث معماری » در نشریات گروه « هنر و معماری »

Traditional survey and 3D documentation methods of Architectural Heritage are challenging, tedious, time-consuming, and error-prone due to the spatial geometry, ornament, and texture complexity in most of these structures. Recent developments in Unmanned Aerial Vehicles (UAVs) photogrammetry technology have provided a precise, rapid, and cost-effective method to generate accurate 3D models of Architectural Heritage for documentation and conservation operations, individually or in combination other methodologies. This study aims to evaluate the ability of UAV photogrammetry to produce a 3D model of a relatively complex Architectural Heritage. Deir-e Gachin Caravansary is one of the 56 Caravanserais in the Persian Caravanserais file -nominated in the UNESCO World Heritage List- which has specific architectural features chosen for this study. This caravansary is situated on the ancient route from Ray to Isfahan, located in the center of the Kavir National Park. This building bears several structural interventions during the past centuries and witnesses historical phases, from its construction in the Sasanian era to its abandonment and negligence in the late Qajar era, right up to the 21st century, when restored and adaptively reused as a tourism destination. The general workflow of this study contains three steps. The first step involves drawing data acquiring plans. Considering the features and complex characteristics of Deir-e Gachin and the possible presence of obstacles at this site to be surveyed is decided to employ aerial and terrestrial platforms to gathering photogrammetric images. In order to acquire complete documentation of the caravansary for photogrammetric purposes, two right cross flights with a ground sampling distance (GSD) of 2 cm are planned. On the other hand, four epochs are determined to acquire terrestrial photogrammetric images. At the second step, the aerial data acquisition of the rooftop and site plan is carried out by a fixed-wing UAV equipped with a non-metric camera. Afterward, two terrestrial photogrammetric processes are applied to acquiring the exterior and central courtyard facades pictures. To be able to record the exact geographic positions of the images, a post-process kinetic (PPK) GPS is attached to the camera during the terrestrial photogrammetric survey. The captured Aerial images are geotagged using the flight logs. The third step is the photogrammetric process to create an integrated and textured 3D model. In this step, aerial and terrestrial images are aligned separately by the software. The outputs of this process were two individual sparse points clouds. Then each aerial and terrestrial dense points clouds are created. Eventually, the aerial and terrestrial meshed surfaces aligned and merged to create an integrated coarse 3D model. After applying texture to the beforehand produced 3D model, the caravansary`s textured model is created. Accuracy evaluation of the result using GCPs shows an accuracy of ±2 cm in the 1:200 scaled 3D model of Deir-e Gachin caravansary. This study demonstrates the high potential of UAV photogrammetry as a fast, accurate, and reliable data acquisition method in producing a detailed exterior 3D model of Architectural Heritage structures, containing high resolution spatial, spectral, and textural information.

The values of cultural heritage can be considered as a key word in interventions in conservation of cultural heritage. Nowadays, the role of value in various fields of heritage, especially in architecture heritage, is one of the most important factors that affects the concept of conservation. Along with and related to the concept of value, lies the concept of conservation, one as old as human history. Due to variety and differences among values in different societies, conserving these values has to precisely identify the needs in each society without which it is not possible to carry out an accurate conservation. This study aims to determine the relationship between the hidden values of architectural heritage in Iran and the ways of conserving them, and by assuming that there is a direct relationship between them, this study attempts to explain this relationship and introduce various kinds of values and ways of conserving them. Analyzing ways to recognize, assess and apply these values in conservation is another section of the studies that provides the preparations to make a suitable model to conserve values of architecture heritage in Iran. The main purpose of this thesis is to obtain a model based on which we can find ways of conservation regarding the values in architecture heritage. This model, known as the value-based model, makes suitable the conditions to extract, assess, and prioritize various values in architecture heritage; it also makes the application of the values possible in order to make appropriate methods of conservation. According to the proposed model in world heritage of Takhte Soleiman and ANP and Delphi method utilizes techniques to extract hidden values in this set the outcome of the project makes it clear that the application of the model resulted in a better decision making process in the field of conservation, and this can make a good opportunity to codify a charter of architecture conservation in Iran. Research is the method of data collection, documentary and field.

The issue of cultural heritage conservation in Soltaniyeh town is of specific significance because of the location of the world heritage of Soltaniyeh dome and citadel” in that city. This article is an attempt to learn about the social conflicts in the conservation of Soltaniyeh dome and citadel. This research has been conducted by using the field study related to the subject. The theoretic framework of the research is based on extending social psychosocial topics to the public conservation of architectural cultural heritage. The results of the studies indicate a set of factors have been effective in the domain of architectural cultural heritage in this city. Some of the most important of the factors include: Lack of interconnection between the principles and fundamentals of “cultural heritage” and “public demands”، the ownership of about 10 hectares in Soltaniyeh small town as the premise of dome and its surrounding citadel، discordant and sectional treatments in the executive process of owned places، disorder in redevelopment of the site round the dome and other historical and cultural limits of the city، the conflict of the social groups working in the dome premise limit and citadel with the administrative system related to the conservation.