后张无粘结混合装配式框架动力弹塑性分析
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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。
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.
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.
引文
[1] 吴刚,冯德成.装配式混凝土框架节点基本性能研究进展[J].建筑结构学报,2018,39(2):1-16
[2] 种迅.后张预应力预制混凝土框架结构抗震能力和设计方法的研究[D].南京:东南大学土木工程学院,2007
[3] 蔡小宁.新型预应力预制混凝土框架结构抗震能力及设计方法研究[D].南京:东南大学土木工程学院,2012
[4] 张晨,周宇凌,蔡小宁,孟少平.后张无粘结混合装配式框架节点抗震性能试验研究[J].东南大学学报(自然科学版),2016,46(5):1063-1069
[5] 郑廷银,徐士云,张玉.带加劲肋的顶底角钢与腹板双角钢连接的梁柱节点的试验[J].工业建筑,2008,38(4):87-90
[6] 张云.基于相关性的带加劲肋的顶底角钢连节点的半刚性研究[D].广州:华南理工大学土木与交通学院,2011
[7] Vidjeapriya R,Jaya K P.Experimental study on two simple mechanical precast beam-column connections under reverse cyclic loading[J].Journal of Performance of Constructed Facilities,2013,27(4):402-414
[8] Mander J B,Priestley M J N and Park R.Theoretical stress-strain model for confined concrete [J].Journal of Structural Engineering,1988,114(8):1804-1827
[9] GB 50010—2010,混凝土结构设计规范[S]
[10] 陈光营,张晨,李加才.顶底角钢连接中带肋角钢有限元分析[J].南通大学学报,2015,14(4):58-63
[11] 杨溥,李英明,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37
[2] 种迅.后张预应力预制混凝土框架结构抗震能力和设计方法的研究[D].南京:东南大学土木工程学院,2007
[3] 蔡小宁.新型预应力预制混凝土框架结构抗震能力及设计方法研究[D].南京:东南大学土木工程学院,2012
[4] 张晨,周宇凌,蔡小宁,孟少平.后张无粘结混合装配式框架节点抗震性能试验研究[J].东南大学学报(自然科学版),2016,46(5):1063-1069
[5] 郑廷银,徐士云,张玉.带加劲肋的顶底角钢与腹板双角钢连接的梁柱节点的试验[J].工业建筑,2008,38(4):87-90
[6] 张云.基于相关性的带加劲肋的顶底角钢连节点的半刚性研究[D].广州:华南理工大学土木与交通学院,2011
[7] Vidjeapriya R,Jaya K P.Experimental study on two simple mechanical precast beam-column connections under reverse cyclic loading[J].Journal of Performance of Constructed Facilities,2013,27(4):402-414
[8] Mander J B,Priestley M J N and Park R.Theoretical stress-strain model for confined concrete [J].Journal of Structural Engineering,1988,114(8):1804-1827
[9] GB 50010—2010,混凝土结构设计规范[S]
[10] 陈光营,张晨,李加才.顶底角钢连接中带肋角钢有限元分析[J].南通大学学报,2015,14(4):58-63
[11] 杨溥,李英明,赖明.结构时程分析法输入地震波的选择控制指标[J].土木工程学报,2000,33(6):33-37