STUDY ON ELASTO-PLATIC STABILITY OF SINGLE-LAYER RETICULATED DOMES

作     者：Z.G. Cao F. Fan S.Z. Shen Research Assistant School of Civil Engineering Harbin Institute of Technology Harbin 150090 China Prof. School of Civil Engineering Harbin Institute of Technology Harbin 150090 China 

会议名称：《International Symposium on New Olympics New Shell and Spatial Structures》

会议日期：2006年

学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

摘      要：正The static stability analysis as a key problem for design of single-layer reticulated shells has become attractive to many researchers since late 1980s. Instead of traditional analytical method based upon continuum theory, the procedure of whole-course response analysis based upon non-linear finite element analysis and method for tracing equilibrium path was developed, by which the structural behavior along with the whole loading course of a complicated structure such like reticulated shell can be revealed clearly by the complete load-deflection curve, and the critical load can be accurately obtained. The effects of some practical factors such like the initial geometric imperfection of the structure and the unsymmetrical distribution of load can also be considered in this procedure. Based upon such a procedure, systematical elastic complete load-deflection analyses for different types of reticulated shells with varying geometric and structural parameters have been carried out. By nearly 20 years effort, the elastic stability of reticulated shells has been solved up to now[1-2].