摘要
内外双重张弦网壳结构是一种新型的空间结构形式。该文采用局部分析法的思想,上部网壳按肋环型布设,对结构的形状确定问题进行了研究。算法1从节点平衡关系入手,对单榀内外组合张弦梁结构的形状确定问题进行了讨论,并给出了体系的初始预内力简捷计算法;算法2在介绍原有数值算法的基础上,提出了改进方法,并对计算过程参数的选取进行了讨论。通过算例比较了以上两种找形方法的计算结果,说明了方法的正确性。该文最后,给出了内外双重张弦网壳结构初始预内力分布的设计流程。
Double inner and outer latticed shell string-structure is a new type of space structure. Based on the local analysis method and the nodal equilibrium equation, the shape determination problem of a single plane double inner and outer beam string-structure is discussed, and then a simplified calculation method for the initial prestress of a ribbed latticed shell string-structure is proposed. Numerical algorithm is introduced and some suggestions for improvement are put forward and the parameter selection of calculation processing is discussed. Two examples are investigated by the above two methods and the calculation results are compared. The results confirm the feasibility of the above method. Finally, the process for the initial prestress design of a double inner and outer latticed shell string-structure is presented.
出处
《工程力学》
EI
CSCD
北大核心
2014年第4期102-111,共10页
Engineering Mechanics
基金
国家自然科学基金项目(50638050)
关键词
内外双重张弦网壳结构
形状确定
简捷计算法
找形分析
找力分析
double inner and outer latticed shell string structure
shape determination
simplified calculation method
form finding analysis
force finding analysis
