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| 缓倾斜坡场地中多栋建筑地震响应研究 |
| Seismic Response Study of Multiple Buildings in a Gently Inclined Slope Site |
| 投稿时间：2024-10-05 修订日期：2024-11-12 |
| DOI： |
| 中文关键词: 结构-土-结构相互作用 缓倾斜坡场地 多栋建筑 静动力耦合分析 地震响应 |
| 英文关键词:structure-soil-structure interaction gently sloping site multiple buildings static-dynamic coupled analysis seismic response |
| 基金项目:湖南省教育科研项目优秀青年项目(21B0420) |
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| 中文摘要: |
| 为研究缓倾斜坡场地中结构-土-结构动力相互作用特性,使用ABAQUS软件建立了一系列结构-土-结构二维有限元分析模型,在考虑土和结构非线性特性的基础上对有限元模型进行静动力耦合分析,并设置0°至15°等6种不同的坡度条件,来探讨斜坡角度和地震动频谱特性对缓倾斜坡场地中结构-土-结构动力相互作用(Structure-Soil-Structure Interaction, SSSI)效应的影响规律。结果发现斜坡在放大坡上结构地震动响应的同时却缩小了坡下结构的地震动响应,且在某些工况下放大或缩小程度与斜坡角度呈现一定的规律；地震动频谱特性对结构间SSSI效应的影响各不相同且不可忽视,当斜坡角度变化时,低频相对丰富的地震动对结构峰值加速度响应和层间位移角响应影响更大。 |
| 英文摘要: |
| To investigate the characteristics of the structure-soil-structure interaction in gently sloping ground, a series of two-dimensional finite element analysis models were established using ABAQUS software. The finite element models were subjected to static-dynamic coupling analysis, taking into account the nonlinear characteristics of both soil and structure. Six different slope conditions ranging from 0° to 15° were set to explore the influence of slope angle and spectral characteristics of the ground motion on the effect of the structure-soil-structure interaction (SSSI) in gently sloping ground. The results indicated that while the slope amplified the seismic response of structures located on the slope, it reduced the seismic response of structures situated under the slope, and the degree of amplification or reduction in some working conditions shown a certain pattern with the slope angle; the spectral characteristics of ground motion on the SSSI effect between structures was different and cannot be ignored. Low-frequency relatively abundant ground motion has a greater effect on the response of the peak acceleration and the interlayer displacement angle when the angle of the slope was changed. |
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