文章摘要
尹训强,滕浩钧,王桂萱.复杂地基条件下桩-土-核岛结构相互作用模型研究[J].地震工程学报,2019,41(6):1581-1586,1606. YIN Xunqiang,TENG Haojun,WANG Guixuan.A Model for Pile-Soil-Nuclear Island Structural Interaction under Complex Foundation Conditions[J].China Earthquake Engineering Journal,2019,41(6):1581-1586,1606.
复杂地基条件下桩-土-核岛结构相互作用模型研究
A Model for Pile-Soil-Nuclear Island Structural Interaction under Complex Foundation Conditions
投稿时间:2018-05-06  
DOI:10.3969/j.issn.1000-0844.2019.06.1581
中文关键词: 接触效应;Goodman单元;软土地基;黏性边界;等价线性法;桩-土-结构动力相互作用
英文关键词: contact effect;Goodman element;soft soil foundation;viscous boundary;equivalent linear method;pile-soil-structure dynamic interaction
基金项目:国家自然科学基金资助项目(51678100,U1839202);大连大学优秀青年博士专项基金项目(2015YBL010)
作者单位
尹训强 大连大学 土木工程技术研究与开发中心, 辽宁 大连 116622 
滕浩钧 大连大学 土木工程技术研究与开发中心, 辽宁 大连 116622 
王桂萱 大连大学 土木工程技术研究与开发中心, 辽宁 大连 116622 
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中文摘要:
      合理有效地模拟桩-土-结构动力相互作用是软土地基条件下核岛厂房结构抗震适应性分析及地基处理的关键环节。以某拟建核岛厂房实际工程为研究背景,结合SuperFLUSH软件平台,以Goodman单元模拟桩与桩周土间的接触效应,采用等价线性法描述近场软土地基非线性特性,并在模型底部和侧面引入黏性边界模拟半无限地基辐射阻尼效应,从而建立土质地基条件下桩-土-核岛结构相互作用分析模型。进而,通过对原状地基和嵌岩桩处理地基条件下核岛厂房的楼层反应谱、结构节点相对位移(绝对值)的对比分析,探讨考虑桩-土间接触效应的嵌岩桩基对核岛厂房结构的影响规律。研究成果可为实际工程中类似土质地基条件下核岛厂房结构的地基处理提供参考。
英文摘要:
      Reasonably and effectively simulating pile-soil-structure dynamic interaction is important in the seismic response analysis and foundation treatment of the nuclear island building over soft ground conditions. In this paper, based on the actual project of a proposed nuclear island plant, the contact effect between the pile and soil around the pile was simulated with the Goodman element, and the nonlinear characteristics of the near-field soft soil foundation are described by equivalent linear method. At the bottom and side of the model, the viscous boundary was introduced to simulate the radiation damping effect of the semi-infinite ground, so that the analysis model for the pile-soil-nuclear island structure interaction was established under the condition of the soil foundation. Furthermore, by comparing and analyzing the floor response spectrum and relative displacement (absolute value) of structure nodes under conditions of the original foundation and rock-socketed pile foundation, respectively, the influence of the rock-socketed pile foundation, considering the contact effect between the pile and soil on the nuclear island building, was analyzed. The results can provide some reference for the foundation treatment of nuclear island structures under similar soil foundations in practical engineering.
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