翼缘开孔削弱型节点受力性能分析
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摘要
为了分析不同削弱参数对翼缘开孔削弱型节点抗震性能的影响,应用ANSYS有限元软件,将不同削弱参数的翼缘开孔削弱型节点和未开孔普通节点进行对比分析,研究了翼缘开孔削弱型节点在不同削弱参数下的骨架曲线、极限承载力、延性和耗能能力。结果表明:相比未开孔普通节点,削弱参数在合理范围内取值,可以使翼缘开孔削弱型节点的耗能能力有较大提高,使抗震性能得到明显改善,同时保证极限承载力和延性只有较小程度的下降。
In order to analyze the effects of different weakening parameters on the seismic behavior of reduced beamto-column joint with beam flange openings,the beam-to-column joints with beam flange openings were compared with the common joints without openings by setting different paramenters. Meanwhile,the paper analyzed the skeleton curves,ultimate bearing capacity,ductility and energy dissipation capability of the reduced joints with beam flange openings with various paraments. The results showed that comparing with common joints without openings,choosing reasonable weakening parameters could greatly improve energy dissipation capability of the beam-to-column joint with beam flange openings,and apparently improve the seismic behavior so as to ensure there was a little decrease of ultimate bearing capacity and ductility.
In order to analyze the effects of different weakening parameters on the seismic behavior of reduced beamto-column joint with beam flange openings,the beam-to-column joints with beam flange openings were compared with the common joints without openings by setting different paramenters. Meanwhile,the paper analyzed the skeleton curves,ultimate bearing capacity,ductility and energy dissipation capability of the reduced joints with beam flange openings with various paraments. The results showed that comparing with common joints without openings,choosing reasonable weakening parameters could greatly improve energy dissipation capability of the beam-to-column joint with beam flange openings,and apparently improve the seismic behavior so as to ensure there was a little decrease of ultimate bearing capacity and ductility.
引文
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[2]LI Fengxing,KANAO Iori,LI Jun,et al.Local Buckling of RBS Beams Subjected to Cyclic Loading[J].Journal of Structural Engineering,2009,135(12):475-496.
[3]韩明岚,王燕,陈建林,等.翼缘削弱型节点钢结构的力学性能研究[J].钢结构,2016,31(5):6-11.
[4]陈廷国,赵广军.钢框架延性节点塑性铰外移的机理研究[J].钢结构,2014,29(12):25-31.
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[6]刁莉莉.翼缘开孔削弱型梁柱节点受力性能研究[D].西安:西安建筑科技大学,2012.
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[2]LI Fengxing,KANAO Iori,LI Jun,et al.Local Buckling of RBS Beams Subjected to Cyclic Loading[J].Journal of Structural Engineering,2009,135(12):475-496.
[3]韩明岚,王燕,陈建林,等.翼缘削弱型节点钢结构的力学性能研究[J].钢结构,2016,31(5):6-11.
[4]陈廷国,赵广军.钢框架延性节点塑性铰外移的机理研究[J].钢结构,2014,29(12):25-31.
[5]杨应华,吴言亮.套管加强梁腹板开孔梁柱节点滞回性能分析[J].西安建筑科技大学学报(自然科学版),2015(6):788-792.
[6]刁莉莉.翼缘开孔削弱型梁柱节点受力性能研究[D].西安:西安建筑科技大学,2012.
[7]王新敏,李义强,许宏伟.ANSYS结构分析单元与应用[M].北京:人民交通出版社,2011.
[8]王路遥.钢框架梁柱改进型刚接节点抗震性能研究[D].北京:北京建筑工程学院,2011.