轻钢龙骨房屋足尺模型低周反复试验
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摘要
对一个具有完整边界条件的轻钢龙骨体系房屋足尺模型进行了低周反复试验。试验主要考虑转角墙对轻钢龙骨体系房屋抗震性能的影响,以及龙骨壁厚对复合承载墙体破坏模式的影响,研究房屋在低周反复荷载作用下的变形过程、破坏特征和滞回性能等。试验结果表明:轻钢龙骨房屋的抗震性能与自攻螺钉连接性能密切相关。自攻螺钉的连接性能决定了轻钢龙骨房屋的耗能机制、耗能能力以及破坏形态。由于螺钉在该结构中分布广泛,使得结构的侧向变形能力和耗能能力较好,同时,试验验证了轻钢龙骨复合墙体抗剪承载力计算时关于自攻螺钉连接受力方向的假设和受力大小分析结果的正确性。
The paper presents a reversed cyclic loading test on a full-size light-gauge steel framed specimen with full boundary conditions.The test mainly considers the influence of corner wall on seismic performance of light-gauge steel framed residences and the influence of stud thickness on failure modes of composite walls.The paper studies the specimen's distortion process,failure modes and hysteretic performance.The results show that: the seismic behavior of light gauge steel framed structure is closely related to the performance of screw connections,which decide its energy dissipation capacity and failure modes.Because of wide distribution of screw,the structure shows good lateral distortion and energy dissipation capacities.The test also verifies the correctness of the assumption about directions and distributions of sheathing fastener forces used in shear strength of light-gauge steel framed composite walls.
The paper presents a reversed cyclic loading test on a full-size light-gauge steel framed specimen with full boundary conditions.The test mainly considers the influence of corner wall on seismic performance of light-gauge steel framed residences and the influence of stud thickness on failure modes of composite walls.The paper studies the specimen's distortion process,failure modes and hysteretic performance.The results show that: the seismic behavior of light gauge steel framed structure is closely related to the performance of screw connections,which decide its energy dissipation capacity and failure modes.Because of wide distribution of screw,the structure shows good lateral distortion and energy dissipation capacities.The test also verifies the correctness of the assumption about directions and distributions of sheathing fastener forces used in shear strength of light-gauge steel framed composite walls.
引文
[1]Gad E F,Chandler A M,Duffield C F et al.Lateral behavior of plasterboard-clad residential steel frames[J].Journal of Structural Engineering,1999,125(1):32-39.
[2]Dubina D,Fulop L A.Seismic performance of wall-studshear walls[C]//16th Institute Specialty Conference on Cold-Formed Steel Structures,St Louis2,002;483-500.
[3]Fulop L A,Dubina D.Are the cold-formed wall stud shearwalls dissipative systems in seismic resistant buildings?How much[A]//F.M.Mazzolani.4th Intstiture Conference on Behaviour of Steel Structures in Seismic Areas.Naples,Italy,2003:841-846.
[4]Fulop L A,Dubina D.Performance of wall-stud coldformedshear panels under monotonic and cyclic loading—Part II Numerical modelling andperformance analysis[J].Thin-Walled Structure,20044,2:333-349.
[5]董军,夏冰青,马宏,等.NAFC、LCFC板及其与轻钢龙骨自攻螺栓连接性能[J].南京工业大学学报,2002,5(24):12-15.
[6]董军,夏冰青.轻钢龙骨复合承载墙体抗震性能研究[A]//第六届全国地震工程学术会议[C].南京:东南大学出版社,2002,9:824-828.
[7]何保康,郭丽峰,周天华,等.轻钢密立柱墙体抗剪性能试验研究[J].建筑结构,20043,4(增刊):338-341.
[8]周天华,石宇,何保康,等.冷弯型钢组合墙体抗剪承载力试验研究[J].西安建筑科技大学学报2,006,38(1):83-88.
[9]North American Steel Framing Alliance.Prescriptive Method for Residential Cold-Formed Steel Framing[M],Year 2000 Edition.
[10]石宇.低层冷弯薄壁型钢结构住宅组合墙体抗剪承载力研究[D].西安:长安大学,2005.
[11]马庆平.轻钢龙骨体系房屋抗震性能研究[D].南京:南京工业大学,2007.
[12]Della Corte,G Fiorino L,Landolfo R.Seismic behaviourof sheathed cold-formed structures:physical tests[J].Journal of Structural Engineering.2006,132(4):570-581.
[13]JGJ 101-96建筑抗震试验方法规程[S].
[14]GB50011-2001建筑抗震设计规范[S].
[2]Dubina D,Fulop L A.Seismic performance of wall-studshear walls[C]//16th Institute Specialty Conference on Cold-Formed Steel Structures,St Louis2,002;483-500.
[3]Fulop L A,Dubina D.Are the cold-formed wall stud shearwalls dissipative systems in seismic resistant buildings?How much[A]//F.M.Mazzolani.4th Intstiture Conference on Behaviour of Steel Structures in Seismic Areas.Naples,Italy,2003:841-846.
[4]Fulop L A,Dubina D.Performance of wall-stud coldformedshear panels under monotonic and cyclic loading—Part II Numerical modelling andperformance analysis[J].Thin-Walled Structure,20044,2:333-349.
[5]董军,夏冰青,马宏,等.NAFC、LCFC板及其与轻钢龙骨自攻螺栓连接性能[J].南京工业大学学报,2002,5(24):12-15.
[6]董军,夏冰青.轻钢龙骨复合承载墙体抗震性能研究[A]//第六届全国地震工程学术会议[C].南京:东南大学出版社,2002,9:824-828.
[7]何保康,郭丽峰,周天华,等.轻钢密立柱墙体抗剪性能试验研究[J].建筑结构,20043,4(增刊):338-341.
[8]周天华,石宇,何保康,等.冷弯型钢组合墙体抗剪承载力试验研究[J].西安建筑科技大学学报2,006,38(1):83-88.
[9]North American Steel Framing Alliance.Prescriptive Method for Residential Cold-Formed Steel Framing[M],Year 2000 Edition.
[10]石宇.低层冷弯薄壁型钢结构住宅组合墙体抗剪承载力研究[D].西安:长安大学,2005.
[11]马庆平.轻钢龙骨体系房屋抗震性能研究[D].南京:南京工业大学,2007.
[12]Della Corte,G Fiorino L,Landolfo R.Seismic behaviourof sheathed cold-formed structures:physical tests[J].Journal of Structural Engineering.2006,132(4):570-581.
[13]JGJ 101-96建筑抗震试验方法规程[S].
[14]GB50011-2001建筑抗震设计规范[S].
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