屈曲约束支撑极限承载力研究方法探讨

PROBING INTO STUDY METHODS OF BRBS' CRITICAL LOAD

屈曲约束支撑极限承载力的研究方法目前集中在试验和理论分析方面,这些技术都是基于对实际结构进行大量的假设和简化,但简化和假设很难完全符合实际,特别是对于支撑的约束条件以及初始缺陷等会影响结构极限承载力的因素。提出用有限元技术来研究初始几何缺陷对屈曲约束支撑极限承载力的影响,以其与试验和理论相佐证。

The critical load of buckling-restricted braces （BRBs） has been mainly studied by the experiments and aeademie analysis reeently. All of the methods base on serious assumptions and predigestions. Especially it is very diffieult for the assumptions and predigestions to fit fully actual supporting conditions and construction deflections. So the critical load of BRBs ean be studied by finite element softwares, beeause of its eonvenienee to simulate the initial deflection and expect directing the experiments and academic analysis.