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Seismic fragility assessment of revised MRT buildings considering typical construction changes

机译：考虑典型建筑变更的捷运改建建筑物的地震易损性评估

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摘要

The present study investigates the vulnerability assessment of the prototype revised Mandatory Rule of Thumb (MRT) buildings initially designed and detailed for three storeys bare frame building; later modified through variable number of storeys (three, four, and five) and different arrangement of infill walls (bare frame, soft-storey, irregular infilled, and fully infilled). The application of infill walls increases the fundamental frequencies, stiffness, and maximum strength capacity, but reduces the deformation capability than the bare frame building. The vulnerability was also reduced through infill walls, where the probability of exceeding partial-collapse and collapse damage reduced by 80% and 50%, respectively. Furthermore, the increased in storeys (three to five) also increases the failure probability, such that partial-collapse and collapse for fully infilled increases by almost 55% and 80%, respectively. All obtained results and discussions concluded that the structural sections and details assigned for MRT building is not sufficient if considered as bare frame and soft-storey. And increase in number of storeys causes building highly vulnerable although the infill walls were considered.
机译：本研究调查了最初为三层裸框架建筑设计和详细设计的原型修订的《强制性拇指法则》（MRT）建筑的脆弱性评估;后来通过可变层数（三层，四层和五层）和填充墙的不同排列（裸框架，软层，不规则填充和完全填充）进行了修改。填充墙的应用增加了基本频率，刚度和最大强度能力，但与裸框架建筑相比却降低了变形能力。该漏洞还通过填充墙得以降低，填充墙超过局部倒塌和倒塌破坏的可能性分别降低了80％和50％。此外，层数的增加（三到五层）也增加了破坏的可能性，因此完全填充的部分塌陷和塌陷分别增加了近55％和80％。所有获得的结果和讨论得出的结论是，如果将MRT建筑物视为裸框架和软层，则分配给其的结构部分和细节是不够的。尽管考虑了填充墙，但层数的增加导致建筑物高度脆弱。

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