拼接设计方法对树状柱节点抗震性能的影响
|
摘要
利用5种不同的拼接设计方法对树状柱弱轴螺栓拼接节点进行了设计,并对设计结果分别进行了单调和循环加载有限元模拟.通过对比,发现这5种设计方法的极限承载力均相差不多.等强设计法试件受力过程中不出现滑移,破坏时最终位移最小.而S-F法试件出现滑移最早,破坏时最终位移最大,与最小的等强设计法试件相差13.6%,表现出较好的半刚性连接性能.5种设计方法试件均具有较好的抗震性能.滞回曲线饱满、稳定,在各次循环中强度、刚度没有明显退化,破坏时整体塑性转角等强设计法试件最小,而S-F法试件最大,二者相差25%.
The column-tree web connections are designed by using five different splicing design methods,and finite element simulation analysis in monotonic and cyclic loads are carried out on the design results.Through comparing,it is found that the ultimate bearing capacities of the five design methods have little difference.No slippage of the equal strength design specimen is observed during the loading,and the final displacement is minimum when it fails.S-F design specimen slips at the earliest,and the final displacement is maximum when it fails.It is 13.6% larger than the minimum equal strength design specimen,and it shows a good semi-rigid connection performance.All specimens of the five design methods have good aseismic behavior.The hysteretic curve is plump and stable,and its strength and stiffness have no obvious degradation in each cycle.S-F design specimen has the maximum plastic deflection while the equal strength design method has the minimum when the specimen fails,their quantitative difference being 25%.
The column-tree web connections are designed by using five different splicing design methods,and finite element simulation analysis in monotonic and cyclic loads are carried out on the design results.Through comparing,it is found that the ultimate bearing capacities of the five design methods have little difference.No slippage of the equal strength design specimen is observed during the loading,and the final displacement is minimum when it fails.S-F design specimen slips at the earliest,and the final displacement is maximum when it fails.It is 13.6% larger than the minimum equal strength design specimen,and it shows a good semi-rigid connection performance.All specimens of the five design methods have good aseismic behavior.The hysteretic curve is plump and stable,and its strength and stiffness have no obvious degradation in each cycle.S-F design specimen has the maximum plastic deflection while the equal strength design method has the minimum when the specimen fails,their quantitative difference being 25%.
引文
[1]JGJ99-98.高层民用建筑钢结构技术规程[S].北京:中国建筑工业出版社,1996.
[2]李星荣,魏才昂,丁峙崐,等.钢结构连接节点设计手册[M].北京:中国建筑工业出版社,2004.
[3]夏军武,常鸿飞.钢框架柱带悬臂梁段拼接节点的弹塑性分析[J].建筑钢结构进展,2005,7(3):49-51.
[4]Sheikh-Ibrahi m FI,Frank K H.The Ulti mate Strength of Sy-mmetric Beam Bolted Splices[J].Engineering Journal,AISC,3rd Qtr.,1998:106-118.
[5]李启才.带悬臂梁端拼接的梁柱连接在循环荷载作用下的破坏机理及抗震设计对策[D].西安:西安建筑科技大学学位论文,2003.
[6]李养成,高梅.钢框架梁柱腹板连接梁翼缘对接焊缝的破坏机理[J].建筑技术开发,2005,32(8):24-57.
[7]孙玉萍,王云,王万祯,等.钢框架梁柱弱轴连接节点在地震下的断裂行为[J].甘肃科学学报,2008,20(2):53-56.
[8]李兆凡,石永久,陈宏,等.改进型钢结构梁柱节点非线形有限元分析[J].建筑结构,2002,32(9).
[2]李星荣,魏才昂,丁峙崐,等.钢结构连接节点设计手册[M].北京:中国建筑工业出版社,2004.
[3]夏军武,常鸿飞.钢框架柱带悬臂梁段拼接节点的弹塑性分析[J].建筑钢结构进展,2005,7(3):49-51.
[4]Sheikh-Ibrahi m FI,Frank K H.The Ulti mate Strength of Sy-mmetric Beam Bolted Splices[J].Engineering Journal,AISC,3rd Qtr.,1998:106-118.
[5]李启才.带悬臂梁端拼接的梁柱连接在循环荷载作用下的破坏机理及抗震设计对策[D].西安:西安建筑科技大学学位论文,2003.
[6]李养成,高梅.钢框架梁柱腹板连接梁翼缘对接焊缝的破坏机理[J].建筑技术开发,2005,32(8):24-57.
[7]孙玉萍,王云,王万祯,等.钢框架梁柱弱轴连接节点在地震下的断裂行为[J].甘肃科学学报,2008,20(2):53-56.
[8]李兆凡,石永久,陈宏,等.改进型钢结构梁柱节点非线形有限元分析[J].建筑结构,2002,32(9).
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心