K6型单层球面网壳弹塑性稳定极限承载力的杆件灵敏度分析  

Member sensitivity analysis of critical loads of elastic-plastic stability for K6 single layer latticed domes

作　　者：杨大彬[1] 张毅刚[1,2] 吴金志[1] 靳卫恒[1] 

机构地区：[1]北京工业大学空间结构研究中心,北京100124 [2]北京工业大学城市与工程安全减灾省部共建教育部重点实验室,北京100124

出　　处：《空间结构》2010年第2期46-49,共4页Spatial Structures

基　　金：国家自然科学基金重大研究计划重点支持项目(90715034);北京工业大学博士研究生创新计划(bcx-2009-036)

摘　　要：利用蒙特卡洛模拟技术以及基于Spearman秩相关系数的灵敏度分析方法,对工程常用的16种K6型单层球面网壳进行了参数分析.利用ANSYS进行了64000次双重非线性模拟运算并对计算结果进行了统计分析,得到了其弹塑性稳定极限承载力对于所有杆件的灵敏度值.总结了K6型单层球面网壳不同位置杆件对其弹塑性稳定极限承载力的影响规律,并对计算分析结果进行了验证.With Monte Carlo simulation technicque and the sensitivity analysis method based on Spearman＇s rank correlation coefficient,parametric analyses are carried out on 16 K6 type single-layer latticed domes commonly used in practice.64000 double nonlinear analyses were carried out using ANSYS and the results were statistically analyzed.The sensitivities of critical loads of elastic-plastic stability to all the members are obtained,and the influence patterns of members in different locations to critical loads of elastic-plastic stability are acquired.Finally the results are verified with an example.

关 键 词：单层球面网壳 稳定 极限承载力 灵敏度 Spearman秩相关系数 蒙特卡洛法 

分 类 号：TU393.3[建筑科学—结构工程]