摘要
采用线性和非线性屈曲两种分析方法对杭州大剧院薄壁混凝土墙体的稳定性进行了计算 .结果表明 ,线性屈曲所得的稳定系数远大于非线性屈曲所得的稳定系数 .尤其在有水平荷载或弯矩作用以及初始缺陷 (偏心 )时 ,线性屈曲所得的稳定系数不具有真实性 .因此验算墙体稳定性应优先采用非线性屈曲的分析方法 .线性屈曲分析方法可以作为稳定分析的辅助方法 .在众多提高混凝土墙体稳定性措施中 ,加强结构整体性是极为有效的方法 .
The Hangzhou Grand Theatre is a multi-functional cultural complex with total floor space of approximately 50 000 m2. The main interior includes a Lyric Theatre have 1719 seats, a Studio Theatre, a Drama Theatre and a number of multi-purpose rooms. To satisfy the service requirement, it has many thin concrete walls with slenderness ratio of nearly 50. Linear and nonlinear techniques were used to analyze the stability of these walls. To accelerate the convergence of nonlinear buckling analysis and to ensure the accuracy of the results, a combination of the Aitken incremental method and the modified Newton-Raphson iterative method were used in the nonlinear analysis. Initial imperfections, plastic behavior and large deflection response of the walls were taken into account in the nonlinear analytic model. Numerical results indicated that the walls' linear buckling loads were far higher than the nonlinear stability and so it was necessary to apply the nonlinear stability solution. Compared to other methods, to reinforce the integration of thin concrete wall with adjacent structural members is the more effective method to increase wall stability. The permitted stability coefficient for an axial compressive component is also provided.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2002年第4期361-365,共5页
Journal of Zhejiang University：Engineering Science
