反应加速度法在地下结构抗震分析中的应用

反应位移法和反应加速度法作为地下结构抗震分析的基本方法均写入了我国规范,但其在实际使用中仍存在一些不确定性。在反应加速度法基本原理的基础上,给出了反应加速度法的计算步骤,并以某典型地下结构为对象,采用该法计算了地震响应的受力特征,并与反应位移法进行了简单比较。结果表明:反应加速度法因能考虑土-结构相互作用,在理论上更为合理,具有更广的适用范围。

Application of Response Acceleration Method in Seismic Analysis of Underground Structure

The response displacement method and response acceleration method have been included in the national specification as basic methods for seismic analysis of underground structure, but there is still some uncertainty in the actual application. Based on the basic principle of response acceleration method, the calculation steps of response acceleration method were given. Taking a typical underground structure as the object, the response acceleration method was adopted to calculate the mechanics characteristics of seismic response, which were compared with that of response displacement method simply. The results showed that, in theory, the response acceleration method was more reasonable, and had wider application scope as it would consider the soil-structure interaction.