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首页> 外文期刊>Waste management & research >Seismic characterization and dynamic site response of a municipal solid waste landfill in Bangalore, India
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Seismic characterization and dynamic site response of a municipal solid waste landfill in Bangalore, India

机译：印度班加罗尔城市固体垃圾填埋场的地震表征和动态场地响应

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Seismic design of landfills requires an understanding of the dynamic properties of municipal solid waste (MSW) and the dynamic site response of landfill waste during seismic events. The dynamic response of the Mavallipura landfill situated in Bangalore, India, is investigated using field measurements, laboratory studies and recorded ground motions from the intraplate region. The dynamic shear modulus values for the MSW were established on the basis of field measurements of shear wave velocities. Cyclic triaxial testing was performed on reconstituted MSW samples and the shear modulus reduction and damping characteristics of MSW were studied. Ten ground motions were selected based on regional seismicity and site response parameters have been obtained considering one-dimensional non-linear analysis in the DEEPSOIL program. The surface spectral response varied from 0.6 to 2g and persisted only for a period of 1 s for most of the ground motions. The maximum peak ground acceleration (PGA) obtained was 0.5 g and the minimum and maximum amplifications are 1.35 and 4.05. Amplification of the base acceleration was observed at the top surface of the landfill underlined by a composite soil layer and bedrock for all ground motions. Dynamic seismic properties with amplification and site response parameters for MSW landfill in Bangalore, India, are presented in this paper. This study shows that MSW has less shear stiffness and more amplification due to loose filling and damping, which need to be accounted for seismic design of MSW landfills in India.
机译：垃圾填埋场的抗震设计需要了解城市固体废物（MSW）的动态特性以及地震事件期间垃圾填埋场废物的动态场地响应。使用现场测量，实验室研究和记录板内区域的地面运动，对位于印度班加罗尔的马瓦利普拉（Mavallipura）垃圾填埋场的动力响应进行了研究。 MSW的动态剪切模量值是基于剪切波速度的现场测量结果确定的。对再生的城市固体废弃物样品进行了循环三轴测试，研究了城市固体废弃物的剪切模量降低和阻尼特性。根据区域地震活动性选择了十次地震动，并考虑了DEEPSOIL程序中的一维非线性分析，获得了场地响应参数。对于大多数地面运动，表面光谱响应从0.6到2g不等，并且仅持续1 s的时间。获得的最大峰值地面加速度（PGA）为0.5 g，最小和最大放大倍数为1.35和4.05。对于所有地面运动，在由复合土壤层和基岩划下的垃圾填埋场顶表面，观察到基本加速度的增大。本文介绍了印度班加罗尔城市生活垃圾填埋场的动态地震特性及其放大率和场地响应参数。这项研究表明，由于疏松的填充和阻尼，MSW的剪切刚度较小，放大倍数更大，这是印度MSW垃圾填埋场的抗震设计所需要考虑的。

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