辽宁工程技术大学学报（自然科学版）2023，Vol.42Issue(6)：679-685,7.DOI:10.11956/j.issn.1008-0562.2023.06.006
地下结构地震反应位移法地基弹簧刚度求解及影响因素分析
Solution of ground spring stiffness and analysis of influencing factors by seismic response displacement method for underground structure
摘要
Abstract
In order to study the influencing factors of foundation spring stiffness,the relationships between soil elastic modulus,soil Poisson ratio,structural height,structural width,structural buried depth and the distance from floor to bedrock and foundation spring stiffness were discussed respectively.Based on the results of the static finite element calculation,a comprehensive formula for calculating the spring stiffness involving multiple factors was proposed,and the validity of the formula was verified by taking the example of a two-story,three-span subway station.The results show that the spring stiffness increases linearly with the increase of the elastic modulus of the soil.The structural height has a great influence on the spring stiffness of the side wall,and the structural width has a great influence on the spring stiffness of the roof and floor.The structural internal force calculated by the comprehensive proposed formula is the closest to the calculation result of the finite element method,indicating that the formula is suitable for the simplified calculation of the foundation spring stiffness.关键词
地下结构/反应位移法/弹簧刚度系数/抗震计算Key words
underground structure/response displacement method/spring stiffness coefficient/earthquake-resistant calculation分类
建筑与水利引用本文复制引用
王磊磊,严松宏,杨斌,孙纬宇,张戎令..地下结构地震反应位移法地基弹簧刚度求解及影响因素分析[J].辽宁工程技术大学学报（自然科学版）,2023,42(6):679-685,7.基金项目
中国国家铁路集团有限公司科技计划开发计划项目(K2021G025) （K2021G025）
国家自然科学基金项目(52208392) （52208392）
