带地下室高层结构嵌固端假定适用条件研究  

Research on Requirement of Application for Fixed End Assumption of High-Rise Buildings with Basement

作　　者：杨晓峰 李亮[2] 

机构地区：[1]上海城投置地(集团)有限公司,上海200348 [2]同济大学建筑工程系,上海200092

出　　处：《结构工程师》2011年第1期66-72,共7页Structural Engineers

摘　　要：对于带地下室的高层及超高层结构,如何确定结构的嵌固端位置和考虑地基回填土的侧向约束作用是结构设计人员关注的重要问题。首先提出了带地下室结构的力学模型,根据经典的弹性理论推导了结构的侧移及内力的计算公式,分析了地基回填土约束参数β、地下室占整个结构比例h/H和地下室与上部结构抗弯刚度比E1I1/E2I2对结构顶部侧移的影响,然后以误差不大于5%的精度为标准提出了近似以地下室顶板和底板为嵌固端时参数β与h/H和E1I1/E2I2的关系曲线。文中提出的公式以严密理论为基础,其计算结果可靠,可供科研人员和设计人员参考和应用。The importance of the identification of the position of the embedded end and the lateral restriction of the back filled soil of high-rise or super high-rise buildings has been concerned by many engineers.The mechanic model is put forward in this paper at first,and the formulas for calculating lateral displacement and inner force are derived based on elastic theory,and the influence on top displacement y（H） by the parameter β,h/H and E1I1/E2I2 are studied also,then the curves between h/H,E1I1/E2I2 and β are put forward on the base of accuracy 5% when the top or base of the basement is embedded.The formulas based on strict theory may be referred and utilized by researchers and engineers.

关 键 词：地下室 嵌固端 回填土 力学模型 弹性理论 计算公式 

分 类 号：TU973.2[建筑科学—结构工程]