摘要
目的为简化计算过程,提出钢筋混凝土框架-剪力墙结构的宏观力学模型,考虑剪力墙边柱对扭转的贡献,对框-剪结构进行非线性分析.方法在这一宏观模型中,对钢筋混凝土框架-剪力墙整体结构采用杆系-层模型,混凝土柱和剪力墙采用简化的宏观有限元模型,对钢筋混凝土中的钢筋和混凝土采用不同的恢复力模型进行模拟,结构的反应通过时程分析法获得,并与偏心结构的振动台试验结果进行对比.结果当结构的多数构件的破坏并不十分严重时,整个结构表现出很好的弹性性质,当结构多数构件已经产生一定程度的破坏,且个别构件破坏严重时,整个结构的非线性性质表现明显.计算的钢筋混凝土框剪结构的弹塑性地震反应与试验值符合较好.结论证明了笔者方法是简单而有效的.且结构的偏心将使结构产生扭转,这将使结构的角柱的负担加重,因此,在结构的非线性分析中应充分考虑偏心结构在地震动作用下的扭转效应.
In order to simplify the calculation, the research is carried out for the macro-finite element of R/C column and shear wall, the nonlinear time history analysis method for this kind of structures is developed in which ＂a member-story model＂ is used as the dynamic analytical model for the whole structure. Macro-finite element models are adopted for R/C column and shear wall, the contribution of fringe column for torsional stiffness is considered, the different restoring performances are used to simulate the different characteristic of steel and concrete. Comparison between analytical results and the results of shaking table tests show that the calculated time histories of the frame-wall model are agreeable to the tested ones, the analytical method developed in this paper is simple and reliable. Furthermore, the structure will turn because the center of mass is apart from the center of stiffness. The retortion will increase the burden of members on the edge of structure, so the retortion should be considered for the nonlinear analysis of structures.
出处
《沈阳建筑大学学报（自然科学版）》
EI
CAS
2006年第3期393-396,共4页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家杰出青年基金(50025823)
辽宁省青年科研人才培养基金(973010)
辽宁省教育厅重大项目(20201056)
