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以某生命线工程工业厂房为例,采用等效线性化方法近似考虑地基的非线性特性进行厂房抗震分析,并将计算得到的楼层反应谱作为对比参数,与线性地基假定条件下抗震分析结果进行对比,结果表明:对于剪切波速较低的厂址(剪切波速小于400m/s),线性地基假定条件下厂房地震响应明显大于等效线性地基下的结果,而当地基剪切波速较高时(剪切波速约为1 100m/s),两者计算结果相近,分析结论可为今后建构筑物抗震设计提供参考。
Taking a certain Lifeline engineering industrial factory as an example, the equivalent linearization method is adopted to approximate the nonlinear characteristics of the foundation to analyze the plant aseismic response. The calculated floor response spectrum is used as a comparison parameter to compare with the results of the seismic analysis under the assumption of linear foundation The results show that for the site with lower shear wave velocity (the shear wave velocity is less than 400m / s), the seismic response of the plant under linear foundation assumption is obviously larger than that under the equivalent linear foundation. When the shear wave velocity of the foundation is high The shear wave velocity is about 1 100m / s). The calculated results are similar, and the conclusions can provide reference for the seismic design of buildings in the future.