Development of an efficient structural system against the progressive collapse of explosive loads for protective measures

Document Type : Research Article

Authors

1 Department of civil engineering, Azad University of Qazvin, Qazvin, Iran

2 Kheybar Group, Protective Structures department, Jame emam hossein univ., Tehran, Iran

Abstract

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 the collapse of an important part of the structure. Progressive collapse may happen due to explosion, fire, earthquake, vehicle collision and errors in the 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 economical. It can be constructed with high speed, accuracy, and quality. In this thesis, the effect of progressive collapse on the RC load-bearing wall system has been studied and its performance is compared to the 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.

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Main Subjects

References

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Amirkabir Journal of Civil Engineering
Volume 52, Issue 2
May 2020
Pages 407-426

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