结构嵌固端确定及计算流程浅析

Determination of structure fixed end and brief analysis calculation process

嵌固端设置对工程设计有一定的影响。选取了无地下室的框架结构以及有地下室的剪力墙住宅两个工程实例,分别对其建立嵌固端在基础和在正负零标高处楼板的两种计算模型,进行了抗震分析和经济性对比。建议结构嵌固端应尽量设置在正负零标高处楼板,同时应满足规范的构造要求;嵌固端设置在基础顶部时,则应进行包络设计;土对结构的约束作用应考虑。

The setting of fixed ends has a certain effect on engineering design. two engineering examples of frame structure without basement and shear wall residence with basement were selected,and two kinds of calculation models were established,which are fixed ends in foundation and in positive and negative elevation floor. It is suggested that the fixed end of the structure should be set in positive and negative floor as far as possible,meeting requirements of the standard.When the fixed end is set at the top of the foundation,the enveloping design should be carried out. The restraining effect of the soil on the structure should be considered.