CAJ | 학술논문

基于Frangopol提出的冗余度计算方法和考虑双重非线性的全过程分析方法,应用有限元软件ANSYS对一个K6型单层网壳进行了极限承载力灵敏度分析,得出了该类型单层网壳的极限承栽力对于杆件失效的灵敏度值.在此基础上,提出了一种防止网壳连续倒塌的有效措施,即加强具有低冗余度(高灵敏度)的杆件以提高其冗余度,从而降低整个单层网壳结构连续倒塌的概率.
기우Frangopol제출적용여도계산방법화고필쌍중비선성적전과정분석방법,응용유한원연건ANSYS대일개K6형단층망각진행료겁한승재력령민도분석,득출료해류형단층망각적겁한승재력대우간건실효적령민도치.재차기출상,제출료일충방지망각련속도탑적유효조시,즉가강구유저용여도(고령민도)적간건이제고기용여도,종이강저정개단층망각결구련속도탑적개솔.
Based on the redundancy calculating method proposed by Fragopol and the whole tracing method considering double nonlinearities, sensitivity analysis on load carrying capacity of a K6 single-layer reticulated shell was done using ANSYS, the sensitivity values of the shell to member failure was calculated. Based on the analysis, a practical method to avoid the progressive collapse of single-layer reticulated shell was presented in this paper strengthening members of low redundancy (high sensitivity index) can effectively reduce the probability of progressive collapse of the structure.