带BRB的单层椭球形网壳的动力弹塑性分析

Dynamic Elastic-plastic Analysis of the Single-layer Elliptical Shell with BRB

对带有约束屈曲支撑的施威德勒椭球形网壳结构进行了全过程动力弹塑性分析,根据结构弹塑性有限元理论,结合网壳结构受力特点,对网壳结构的弹塑性抗震性能进行了探讨.着重考察了在强震作用下约束屈曲支撑对此类型网壳结构的动力性能和破坏形式的影响,结果表明带约束屈曲支撑对网壳的弹塑性性能有较大影响.

The whole process of dynamic elastic-plastic analysis was carried out for Schwedler elliptical shell structure by using the theory of elastic-plastic finite element,and in combination with the force characteristics of reticulated shell. Its elastic-plastic aseismatic performance was explored. Emphasis is laid on the dynamic performance and failure modes of the shell structure when helped by BRB under strong earthquakes. The results show that BRB has a valid effect on the shell＇s elastic-plastic performance.