Comparisons of resistant moment frame and bearing wall system with respect to progressive collpase

Progressive collapse can be caused by the failure and instability of a small part of the structure that gradually develops as a chain function and eventually leads to collapse of an important part of the structure. Progressive collapse may happen due to explosion, fire, earthquake, vehicle collision and errors in design and construction of building with any system type. Reinforced concrete (RC) load bearing wall system is one of the appropriate structural systems for average height buildings that Based on the number of walls in plan and reduction in lateral force contribution, this system in addition to its strength against earthquake, according to volume of construction materials is economic. It can be constructed with high speed, accuracy and quality. In this thesis, the effect of progressive collapse on RC load bearing wall system has been studied and its performance is compared to RC moment frame. For this purpose three-dimensional models of 10-story structures with the same plan in both systems, have been selected. The effects of geometric and material nonlinearity are considered and cross sections are modeled by fiber elements. To ensure the accuracy of modeling by fiber section method, the analysis results are validated by an experimental model of RC load bearing wall. .