型钢混凝土梁式转换节点抗震性能研究
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摘要
通过对连续型钢混凝土梁式转换层结构模型的两种加载方式下的拟静力试验,对比分析了型钢混凝土转换节点与柱不带轴压力型钢混凝土框架节点的抗震特性,得到了不同于普通框架节点的转换节点的破坏机制、耗能能力、强度退化等.分析得出节点型钢腹板的剪应力方程,利用试验数据可求得腹板上测点的应力值.为了与试验结果相互验证,建立有限元模型,进一步对比分析证明了转换节点在地震力下的受力特性符合节点斜压杆机理.
Based on the pseudo-static tests of the continuous steel reinforced concrete(SRC) beam transferring structural model under two loading modes,some aseismic behaviors of transferring joints,such as the failure patterns,deformation capacity,energy dissipation capacity,strength degradation of steel reinforced concrete transferring joints,were presented for contrasting them with the aseismic performance of SRC frame joints without axial compression.The aseismic behaviors of the SRC transferring joints and the equivalent SRC frame joints were analyzed by using the finite element method.Stresses in the steel webs were obtained by using the test data in the shear strength equation introduced from the analysis.In order to prove the results of the test,a finite element model was put forward,which showed that the strut-tie mechanism of the transferring joints under earthquake forces is effective.
Based on the pseudo-static tests of the continuous steel reinforced concrete(SRC) beam transferring structural model under two loading modes,some aseismic behaviors of transferring joints,such as the failure patterns,deformation capacity,energy dissipation capacity,strength degradation of steel reinforced concrete transferring joints,were presented for contrasting them with the aseismic performance of SRC frame joints without axial compression.The aseismic behaviors of the SRC transferring joints and the equivalent SRC frame joints were analyzed by using the finite element method.Stresses in the steel webs were obtained by using the test data in the shear strength equation introduced from the analysis.In order to prove the results of the test,a finite element model was put forward,which showed that the strut-tie mechanism of the transferring joints under earthquake forces is effective.
引文
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[5]赵鸿铁.钢与混凝土组合结构[M].北京:科学出版社2001:61 63.
[6]LIANG Xue-mei.Seismic behavior of RCS beam-column sub-assemblies and frame systems designed following a joint de-formation-based capacity design approach[D].Annarbor:U-niversity of Michigan in America.2003:154.
[2]张誉,李向民,李辉,等.钢骨高强混凝土梁柱十字节点抗剪性能的研究[J].建筑结构,1999,7:6 10.ZHANG Yu,LI Xiang-min.LI Hui,et al.Study on theshear behaviors of the steel reinforced high strength con-crete beam-column joints[J].Building Structures,1999,7:6 10.
[3]孙炳楠,洪滔,杨骊先.工程弹塑性力学[M].杭州:浙江大学出版社,1999:116 132.
[4]聂建国,陈林,肖岩.钢-混凝土组合梁抗剪研究中的塑性分析方法[J].工程力学,2002,19(5):48 51.NIE Jian-guo,CHEN Lin,XIAO Yan.Plastic analysisof shear behavior of composite steel-concrete beams[J].Engineering Mechanics,2002,19(5):48 51.
[5]赵鸿铁.钢与混凝土组合结构[M].北京:科学出版社2001:61 63.
[6]LIANG Xue-mei.Seismic behavior of RCS beam-column sub-assemblies and frame systems designed following a joint de-formation-based capacity design approach[D].Annarbor:U-niversity of Michigan in America.2003:154.
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