摘要
本文采用框架结构的层间失效模式，将框架结构看作是一个失效相关的串联体系，建立了框架结构体系可靠度的计算模型。同时，在结构体系可靠度一定的条件下，以层间刚度作为优化变量，对框架结构进行可靠度的最优分配，使整个结构的造价最低。这样的设计方法可以充分发挥材料的抗力，达到节省材料的目的，显然，本文方法是对现有工程结构可靠性设计方法的一种改进。
According to the story failure model of frame structures,it is a failure-dependent series system,and a calculation method of frame structure reliablity is proposed. In the mean time,story stiffness is chosen as the independent variable, and the corresponding story reliability will be assigned by optimal allocation for a given system reliability. The whole construction cost is to be minimized. This method can make best use of material. Therefor,it is a reasonable method,and it is an improvement on the present design method based on reliability of engineering construction.
关键词
框架
最优分配
可靠性
风载荷
frame
system reliability
optimal allocation
