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ISSN 2096-7780 CN 10-1665/P

陈珍, 周游, 郝冰, 李远东, 周正华, 沈欣茹, 魏鑫. 龙头山集镇局部场地地震动效应分析 [J]. 地震科学进展, 2022, (12): 566-573. doi: 10.19987/j.dzkxjz.2022-050" target="_blank" class="mainColor"> 10.19987/j.dzkxjz.2022-050.
引用本文: 陈珍, 周游, 郝冰, 李远东, 周正华, 沈欣茹, 魏鑫. 龙头山集镇局部场地地震动效应分析 [J]. 地震科学进展, 2022, (12): 566-573. doi: 10.19987/j.dzkxjz.2022-050" target="_blank" class="mainColor"> 10.19987/j.dzkxjz.2022-050.
Chen Zhen, Zhou You, Hao Bing, Li Yuandong, Zhou Zhenghua, Shen Xinru, Wei Xin. Analysis of the local site effect in Longtoushan town [J]. Progress in Earthquake Sciences, 2022, (12): 566-573. doi: 10.19987/j.dzkxjz.2022-050" target="_blank" class="mainColor"> 10.19987/j.dzkxjz.2022-050.
Citation: Chen Zhen, Zhou You, Hao Bing, Li Yuandong, Zhou Zhenghua, Shen Xinru, Wei Xin. Analysis of the local site effect in Longtoushan town [J]. Progress in Earthquake Sciences, 2022, (12): 566-573. doi: 10.19987/j.dzkxjz.2022-050" target="_blank" class="mainColor"> 10.19987/j.dzkxjz.2022-050.

龙头山集镇局部场地地震动效应分析

Analysis of the local site effect in Longtoushan town

  • 摘要: 依据龙头山集镇6个典型场地上的钻探资料及土体的动力非线性特性试验数据,分别建立了相应场地的地震反应分析模型。以幅值折半的龙头山镇强震动台站(053LLT)东西向主震加速度记录作为入射地震动,采用一维土层地震反应分析等效线性化方法计算了场地地震反应,讨论了近地表覆盖土层结构对地震动加速度峰值及反应谱的影响,并对场地效应与震害的关系进行了分析。

     

    Abstract: Based on the drilling data of six typical sites in Longtoushan town and the test data of dynamic nonlinear characteristics of soil, the seismic response analysis models of the corresponding sites were established respectively. Under the action of ground motion acceleration in east-west direction obtained by Longtoushan town strong observation station (053LLT) during Ludian earthquake with half-amplitude, the equivalent linearization method of one-dimensional soil layer seismic response analysis was used to calculate the seismic response of each site and the effect of near-surface overburden soil layer on peak acceleration. Response spectrum of ground motion was also discussed, and the relationship between site effect and earthquake damage was analyzed.

     

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