Retrofitting buildings in densely populated areas with a soft story configuration on the first floor can pose a daunting challenge to the community. Against this backdrop, this study set out to evaluate the seismic retrofit strategy's adequacy in enhancing the seismic performance of buildings with a soft story. The proposed strategy utilizes an earthquake energy dissipation device consisting of a combination of a diagonal brace and a metallic-yielding damper at the ground story level. Two prototype buildings, one with five and the other with ten floors, were chosen to assess the proposed retrofit strategy's seismic response through nonlinear static and dynamic analyses. The seismic capacity, lateral displacement response, maximum inter-story drift ratio, energy dissipation, and collapse fragility are the major response parameters used to compare original and retrofitted buildings. The nonlinear static analysis results revealed that the seismic capacity for buildings equipped with a yielding damper was higher than that of the original buildings. It was also found that retrofitted frame buildings had a desirable structural behavior with a higher value of dissipated energy and a lower value of residual displacements and inter-story drift ratio, in turn reducing the likelihood of soft-story failure.

在人口稠密地区用一楼的软故事结构翻新建筑物可能给社区带来艰巨的挑战。在此背景下，本研究着手评估抗震改造策略在增强具有软故事的建筑物的抗震性能方面的适当性。拟议的策略利用了一个地震消能设备，该设备由地面层的对角撑杆和金属阻尼器组成。选择了两座原型建筑，一栋有五层，另一栋有十层，通过非线性静态和动态分析评估了拟议的改造策略的地震响应。抗震能力，横向位移响应，最大层间位移比，能量耗散，和倒塌脆弱性是用于比较原始建筑物和翻新建筑物的主要响应参数。非线性静力分析结果表明，装有屈服阻尼器的建筑物的抗震能力高于原始建筑物。还发现，改建的框架建筑物具有理想的结构性能，具有较高的耗散能量值和较低的残余位移值以及层间漂移率，从而降低了软层破坏的可能性。