暗支撑高度变化时十字型短肢剪力墙非线性分析
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摘要
利用ANSYS对8个带暗支撑的十字型钢筋混凝土短肢剪力墙进行单调荷载作用下的非线性有限元分析,比较了在暗支撑布置高度变化时,剪力墙的承载能力、刚度和变形能力变化情况,分析了带暗支撑的十字形短肢剪力墙的暗支撑位置对构件的极限荷载和破坏形态的影响,揭示该型短肢剪力墙结构的真实力学行为,得出暗支撑在十字形短肢剪力墙的上下两端附近时对抗震最为有利的结论。为实际工程的截面设计提供依据。
Eight cross-section reinforced-concrete short-pier shear wall with concealed bracings specimens under monotonic load were analyzed by the nonlinear finite element analysis with the software ANSYS,which compared the effect of the variation of the height of the concealed bracings on load capacity,stiffness and deformation capacity of the shear wall,and analyzed the influence of the concealed bracings′ position on ultimate load and failure patterns of cross-section short-pier RC shear wall.And the real mechanical behavior of cross-section short-limb shear wall was revealed.The analysis results show that it is more beneficial to the seismic performance of cross-section short-pier RC shear wall when the position of concealed bracings is near both ends of the structure.Then a meaningful basis for practical engineering design of the section is provided.
Eight cross-section reinforced-concrete short-pier shear wall with concealed bracings specimens under monotonic load were analyzed by the nonlinear finite element analysis with the software ANSYS,which compared the effect of the variation of the height of the concealed bracings on load capacity,stiffness and deformation capacity of the shear wall,and analyzed the influence of the concealed bracings′ position on ultimate load and failure patterns of cross-section short-pier RC shear wall.And the real mechanical behavior of cross-section short-limb shear wall was revealed.The analysis results show that it is more beneficial to the seismic performance of cross-section short-pier RC shear wall when the position of concealed bracings is near both ends of the structure.Then a meaningful basis for practical engineering design of the section is provided.
引文
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[3]曹万林,胡国振,周明杰,等.带暗支撑抗震墙研究[J].世界地震工程,1998,14(4):76-80.
[4]刘春燕,钢筋混凝土带暗支撑剪力墙抗震性能试验研究[D].北京:北京工业大学,2000.
[5]曹万林,王洪星,田宝发,等.带X形暗支撑设暗竖缝剪力墙抗震性能试验研究[J].世界地震工程,2001,17(2):39-42.
[6]张守军,李青宁,李锐,等.T形短肢剪力墙弹塑性受力性能优化分析[J].四川建筑科学研究,2009,35(1):16-18.
[7]曹万林,杨兴民,黄选明,等.钢筋混凝土带暗支撑一字形截面短肢剪力墙抗震性能试验研究[J].世界地震工程,2004,20(4):30-35.
[8]王丽.带暗支撑Z形截面短肢剪力墙抗震性能试验及分析[D].北京:北京工业大学,2004.
[9]黄选明,曹万林,吕西林.不同型式暗支撑短肢剪力墙抗震性能试验研究[J].地震工程与工程振动,2005,2(3):60-66.
[10]邹翾.复杂截面钢筋混凝土框架结构的非线性分析研究[D].上海:同济大学,2004.
[11]柯江.不同加载角下十字形柱的承载力与延性分析[J].陕西理工学院学报:自然科学版,2010,26(2):40-42.
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