带较大面积地下室高层结构嵌固端问题研究

Research of fixed end with larger area basement of high-rise structure

高层结构嵌固端的选择对结构计算非常重要,而规范对带较大面积地下室高层结构嵌固端问题没有具体的说明。本文通过理论分析和具体算例,分析较大面积地下室对上部结构的嵌固作用,确定长宽比较大的平面不规则结构(改变长宽比使之越来越大)地下室结构楼层相对刚度的计算范围。

The fixed end choice of high-rise structure is very important for the structure calculation,while the code for a larger area of the basement of a high-rise structure with a fixed end no specific instructions. In this paper,through theoretical analysis and specific examples, analysis of large area basement of the upper structure of the fixed effect, determine the irregular plane structure （ change of length to width is bigger than the calculation range and） structural floor basement relative stiffness.