摘要
采用非线性时变有限元法,对索穹顶结构在各施工阶段的力学性状进行了全过程跟踪分析,得出施工过程杆件内力和节点位移的演变规律。计算结果表明,部分杆件在施工过程中的最大内力超出设计值的47%,得出不考虑施工过程的时变效应对结构设计偏于不安全的结论,最后为索穹顶结构的设计和施工提出指导性的建议。
The structural characteristics in every construction stage of cable dome were analyzed.Adopting the theory of nonlinear time-varying mechanics,the variations of internal force and displacements were obtained.Numerical results indicated that maximum internal force in construction process was greater 47% than that in designed state,the paper reached a conclusion that it was not safe to design if the time varying effect was not considered in the construction process analysis.At last,advices on design and const...
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2008年第4期91-94,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50278004)
关键词
索穹顶结构
施工全过程分析
时变力学
非线性
cable dome
construction process analysis
time-varying mechanics
nonlinear
