土层结构对反应谱特征周期的影响

Effects of soil layer construction on characteristic periods of response spectra

本文选取和构造了若干有工程意义的典型场地剖面,利用目前工程上广泛应用的场地地震反应分析的一维等效线性化波动方法,计算了在不同地震动输入下的不同场地剖面的地表加速度峰值和地表速度峰值。利用计算得到的地表加速度峰值和速度峰值计算了不同场地在不同地震动输入下的反应谱的特征周期。研究了不同土层结构对地表加速度反应谱特征周期的影响,获得了一些有意义的结果。

In this paper, some representative site profiles with engineering value are selected and constructed, and ground surface's acceleration peaks (GSAP) and velocity peaks (GSVP) of different site profiles under different ground motion inputs are calculated through 1D equivalent linearization wave method employed widely for site seismic response of sites. GSAP and GSVP obtained through calculation are used to calculate the response spectra's characteristic periods (Tg) of different sites under different ground motions. Effects of soil layer construction on Tg of response spectra are studied, and some valuable results are obtained. 