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后张无粘结混合装配式框架动力弹塑性分析
Dynamic elastoplastic analysis of unboned post-tensioned hybrid precast concrete frame
【摘要】 基于OpenSees平台,提出了后张无粘结混合装配式框架(PTHP)的有限元建模方法。合理选择了6条地震波,对该框架进行了动力弹塑性分析。罕遇地震下框架的层间位移角、梁端转角、柱端转角均满足规范要求。框架的出铰情况合理,属于"梁铰耗能"机制。预应力的损失很小,预应力筋始终处于弹性状态。
【Abstract】 The finite element modeling method of the PTHP frame is established by using the finite element software OpenSees. The article 6 seismic wave is selected to apply to the overall framework for dynamic elastoplastic analysis. The storey drift of structure,the rotation angle of beam-column joint and plastic hinge of bottom part of column can meet the specification deformation requirements under rare earthquake.The hinge of the frame is reasonable, which is accord to the "beam hinge energy dissipation mechanism". The loss of prestress is very small, and prestressed tendons are always in elastic state.
【Key words】 post-tensioned; unbonded; precast; frame; dynamic elastoplastic analysis;
- 【文献出处】 建筑科学 ,Building Science , 编辑部邮箱 ,2019年05期
- 【分类号】TU311.3
- 【被引频次】2
- 【下载频次】136