底部开缝预应力剪力墙结构力学性能的有限元分析
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摘要
根据现浇混凝土结构与装配混凝土结构的耗能特点,建立了底部开缝后张拉预应力摇摆剪力墙结构模型,并采用数值模拟方法研究其抗震耗能性能,分析分布钢筋、预应力水平、轴压力等参数对其力学性能的影响,并与同类型整体现浇剪力墙进行了对比分析。结果表明:底部开缝后张拉预应力摇摆剪力墙结构具有一定的耗能能力,虽然相对于现浇剪力墙结构,其承载力较低,但变形能力较强,墙体损伤和残余变形较小,并且具有较好的自复位能力。
Based on the seismic behavior of cast-in-place concrete structures and precast concrete structures, post-tensioned rocking shear wall with bottom slits was proposed in this paper.Seismic performance of the wall was studied with numerical simulation method and the effects of distribution mild reinforcement, post-tension level and axial-load level on the mechanical performance were also investigated. The study results indicated that although the strength of post-tensioned rocking shear walls decreases comparing with that of the normal shear walls,the proposed walls can achieve certain energy dissipation capacity. Furthermore,the walls can undergo large displacement with little damage and residual deformation, and have excellent self-centering ability.
Based on the seismic behavior of cast-in-place concrete structures and precast concrete structures, post-tensioned rocking shear wall with bottom slits was proposed in this paper.Seismic performance of the wall was studied with numerical simulation method and the effects of distribution mild reinforcement, post-tension level and axial-load level on the mechanical performance were also investigated. The study results indicated that although the strength of post-tensioned rocking shear walls decreases comparing with that of the normal shear walls,the proposed walls can achieve certain energy dissipation capacity. Furthermore,the walls can undergo large displacement with little damage and residual deformation, and have excellent self-centering ability.
引文
[1]Hasan H K,Tugrul T.Performance of a precast concrete beam-to-beam connection subject to reversed cyclic loading[J].Engineering Structures,2005,27 (9):1392-1407.
[2]李振宝,董挺峰,闫维明,等.混合连接装配式框架内节点抗震性能研究[J].北京工业大学学报,2006,32 (10):895-900. Li Z B,Dong T F,Yan W M,et al.Study on seismic performances of hybrid precast concrete beam-to-column connections[J].Journal of Beijing University of Technology,2006,32(10):895-900.
[3]赵斌,吕西林,刘丽珍.全装配式预制混凝土结构梁柱组合件抗震性能试验研究[J].地震工程与工程振动,2005,25(1):81-87. Zhao B,L(u|¨) X L,Liu L Z.Experimental study on seismic behavior of precast concrete beam-column subassemblage with fully assembled joint[J].Earthquake Engineering and Engineering Vibration,2005,25(1): 81-87.
[4]吕西林,范力.装配式预制混凝土框架结构缩尺模型拟动力试验研究[J].建筑结构学报,2008,29(4): 58-65. ??L(u|¨) X L.Fan L.Pseudodynamic test on a reduced scale jointed precast concrete frame structure[J]. Journal of Building Structures,2008,29(4):58-65.
[5]Jeong H IL.Evaluation of self-centering reinforced concrete columns by shaking table tests and numerical simulations[D].Berkeley,University of California, 2007.
[6]Bulent E,Arturo E.Self-centering behavior of unbonded, post-tensioned precast concrete shear walls [J].Journal of Earthquake Engineering,2009,13 (7):1047-1064.
[7]Yahya C.Kurama.Seismic design of unbonded post-tensioned precast concrete walls with supplemental viscous damping[J].ACI Structural Journal,2000, 97(4):648-658.
[8]Yahya C.Kurama.Hybrid post-tensioned precast concrete walls for use in seismic regions[J].PCI Journal, 2002,47(5):36-59.
[9]Restrepo J I,Rahman A.Seismic performance of self-centering structural walls incorporating energy dissipators[J].Journal of Structural Engineering, 2007,133(11):1560-1570.
[10]Ajrab J J,Pekcan G,Mander J B.Rocking wall—frame structures with supplemental tendon systems [J].Journal of Structural Engineering,2004,130 (6):895-903.
[2]李振宝,董挺峰,闫维明,等.混合连接装配式框架内节点抗震性能研究[J].北京工业大学学报,2006,32 (10):895-900. Li Z B,Dong T F,Yan W M,et al.Study on seismic performances of hybrid precast concrete beam-to-column connections[J].Journal of Beijing University of Technology,2006,32(10):895-900.
[3]赵斌,吕西林,刘丽珍.全装配式预制混凝土结构梁柱组合件抗震性能试验研究[J].地震工程与工程振动,2005,25(1):81-87. Zhao B,L(u|¨) X L,Liu L Z.Experimental study on seismic behavior of precast concrete beam-column subassemblage with fully assembled joint[J].Earthquake Engineering and Engineering Vibration,2005,25(1): 81-87.
[4]吕西林,范力.装配式预制混凝土框架结构缩尺模型拟动力试验研究[J].建筑结构学报,2008,29(4): 58-65. ??L(u|¨) X L.Fan L.Pseudodynamic test on a reduced scale jointed precast concrete frame structure[J]. Journal of Building Structures,2008,29(4):58-65.
[5]Jeong H IL.Evaluation of self-centering reinforced concrete columns by shaking table tests and numerical simulations[D].Berkeley,University of California, 2007.
[6]Bulent E,Arturo E.Self-centering behavior of unbonded, post-tensioned precast concrete shear walls [J].Journal of Earthquake Engineering,2009,13 (7):1047-1064.
[7]Yahya C.Kurama.Seismic design of unbonded post-tensioned precast concrete walls with supplemental viscous damping[J].ACI Structural Journal,2000, 97(4):648-658.
[8]Yahya C.Kurama.Hybrid post-tensioned precast concrete walls for use in seismic regions[J].PCI Journal, 2002,47(5):36-59.
[9]Restrepo J I,Rahman A.Seismic performance of self-centering structural walls incorporating energy dissipators[J].Journal of Structural Engineering, 2007,133(11):1560-1570.
[10]Ajrab J J,Pekcan G,Mander J B.Rocking wall—frame structures with supplemental tendon systems [J].Journal of Structural Engineering,2004,130 (6):895-903.
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