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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Experimental study of a novel multi-hazard resistant prefabricated concrete frame structure
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Experimental study of a novel multi-hazard resistant prefabricated concrete frame structure

机译：一种新型的多危害预制混凝土框架结构的试验研究

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摘要

Reinforced concrete (RC) frames are one of the most commonly used structural systems worldwide. Earthquake actions and progressive collapse caused by accidental local damage are two critical hazards increasing collapse risks of multi-story RC frames. A significant difference is well recognized between the structural seismic design and progressive collapse design. Whilst the seismic design focuses on resisting the lateral forces due to earthquake, the progressive collapse design deals with resisting the unbalanced vertical load induced by a localized failure. Existing research has revealed that considering the two different designs individually for a structure may lead to an undesirable overall structural performance and unnecessary waste of construction materials. In this study, a novel Multi-Hazard Resistant, Prefabricated Concrete (MHRPC) frame system is proposed to satisfy the demands of both structural seismic and progressive collapse designs. Cyclic and progressive collapse tests are conducted to validate the performance of this newly proposed structural system. The mechanisms of the MHRPC frame system under both cyclic loads and a middle column removal scenario are analyzed based on the experimental results and numerical simulations using OpenSees. The results indicate that the proposed fame system exhibits such characteristics as large rotation, low damage, self-centering, and ease of repair. The system is also proven to be able to meet the multi-hazard design requirements of RC frames against both earthquake actions and progressive collapse.
机译：钢筋混凝土（RC）框架是全世界最常用的结构系统之一。地震和局部意外损坏引起的逐步倒塌是增加多层RC框架倒塌风险的两个关键危害。在结构抗震设计和渐进倒塌设计之间已经认识到明显的区别。地震设计的重点是抵抗地震引起的侧向力，而渐进式倒塌设计则用于抵抗局部破坏引起的不平衡垂直载荷。现有研究表明，针对结构单独考虑两种不同的设计可能会导致不良的总体结构性能和不必要的建筑材料浪费。在这项研究中，提出了一种新颖的多危害预制混凝土框架（MHRPC），以满足结构抗震和渐进倒塌设计的需求。进行了循环和渐进倒塌测试，以验证此新提议的结构系统的性能。基于实验结果和使用OpenSees进行的数值模拟，分析了MHRPC框架系统在循环荷载和中柱拆除情况下的机理。结果表明，提出的成名系统具有旋转大，损伤小，自定心，维修方便等特点。该系统还被证明能够满足RC框架在地震作用和渐进性倒塌方面的多重危险设计要求。

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