(1 同济大学建筑工程系, 上海 2000092; 2 同济大学土木工程防灾国家重点实验室, 上海 200092)

[摘要] 研究了一种具有自回复能力的圆管柱-H型钢梁节点的力学性能。该节点在梁柱间通过奥氏体镍钛形状记忆合金螺杆连接，并通过形状记忆合金螺杆的超弹性来使得该节点在震后具有自回复能力。采用通用有限元分析软件ANSYS 14.5建立节点模型, 对此节点进行了循环加载以验证节点的自回复能力。研究表明:这类节点具有一定的耗能能力。在相对位移转角达到5%的情况下, 主体结构中的梁和柱仍保持弹性。地震作用后，节点可以回复到其初始位置而没有残余变形。

[关键词] 圆管柱-H型钢梁节点; 形状记忆合金; 参数化分析; 预应力; 自回复

中图分类号：TU391

Investigation on the self-centering capability of an novel H-shaped beam to tubular column connection

Shao Hongliang¹ , Wang Wei^1,2

(1 Department of Building Engineering, Tongji University, Shanghai 200092, China;

2 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract：This paper investigates the structural performance of a self-centering H-shaped Beam to Tubular Column Connection. This connection uses austenite Ni-Ti shape memory alloy (SMA) tendons to connect beams and columns. The super-elastic SMA tendons provide self-centering capability after earthquake. A general FEM analysis software - ANSYS 14.5 was adopted to model this connection subjected to cyclic loading. This study indicates that the connections have a moderate energy dissipation and ductility capacity. Moreover, under 5% inter-story drift, the column, beam and endplates all remain elastic. Upon unloading, the connections have no residual deformation, and they can be recovered to their original condition.

Keywords：H-shaped beam to tubular column, shape memory alloy, parametric study, intial pre-stress, self-centering 

参考文献

[1] TREMBLAY R, FILIATRAULT A, BRUNEAU M, et al. Seismic design of steel buildings: lessons from the 1995 Hyogo-ken Nanbu earthquake[J]. Canadian Journal of Civil Engineering,1996, 23(3): 727-756.

[2] ROEDER C W. Connection performance for seismic design of steel moment frames[J]. Journal of Structural Engineering,2002, 128(4): 517-525.

[3] RICLES J M, SAUSE R, GARLOCK M M, et al. Posttensioned seismic-resistant connections for steel frames[J]. Journal of Structural Engineering,2001, 127(2): 113-121.

[4] 潘振华，潘鹏，邱法维，等. 具有自复位能力的钢结构体系研究[J]. 土木工程学报,2010(S1): 403-410.

[5] SPEICHER M S, DESROCHES R, LEON R T. Experimental results of a NiTi shape memory alloy (SMA)-based recentering beam-column connection[J]. Engineering structures,2011, 33(9): 2448-2457.

[6] DESROCHES R, MCCORMICK J, DELEMONT M. Cyclic properties of superelastic shape memory alloy wires and bars[J]. Journal of Structural Engineering,2003, 130(1): 38-46.

[7] 商泽进，王忠民，尹冠生，等. 超弹性 TiNi 形状记忆合金棒材力学行为[J]. 稀有金属材料与工程,2009, 38(3): 460-464.