框架结构体系可靠度的最优分配
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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.
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.
引文
1王光远，潭东耀，张淑华．失效相关串联工程系统可靠度的最优分布．地震工程与工程振动，1992，12（2）：19～282李桂青．结构可靠度．武汉：武汉工业大学出版社，19893李桂青，曹宏，李秋胜等．结构动力可靠性理论及其应．北京：地震出版社，19934高小旺．钢筋砼框架结构抗震可靠度分析：［博土学位论文］北京：清华大学．19905李桂青．抗震结构计算理论和方法．北京：地震出版社，1985
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