转换层位置对某梁式转换结构抗震性能影响

Influence of position of transition layer on seismic performance of a beam type transfer structure

以西安某梁式转换结构拟建工程为背景,针对2层、4层、6层3种转换层位置分别建立结构模型。对结构进行模态分析、地震作用下的振型分解反应谱分析、Pushover分析。从结构模态、变形、构件内力、塑性铰分布等方面分析研究转换层位置变化对结构抗震性能的影响规律。结果表明:转换层设置在4层、6层时仍能满足要求。研究结果可为类似结构转换层位置的选取及结构设计提供参考。

Structural models are established for the position of 2, 4 and 6 layers of conversion layer respectively based on the construction of a beam tansfer structure in Xian. The structure is analyzed byresponse spectrum analysis and Pushover analysis under earthquake action. The influence of the change of po-sition on the seismic performance of the structure is studied from the structural force and plastic hinge distribution. According to the analysis results, the transition layer position can stillmeet the requirement in 4 layer and 6 layer. The research results can provide a usetion of the position and the structure design of the transfer layer of this kind of structure.