轻钢龙骨墙体拟动力试验研究
|
摘要
对一面壁厚为1mm的轻钢龙骨墙体进行拟动力试验,研究了该结构在地震作用下的破坏模式、变形、滞回、和刚度退化等抗震性能。结果表明:9度多遇地震下结构才开始出现塑性变形,说明结构表现出较好的抗震性能;7度罕遇地震下墙体节点出现严重变形,但仍有承载能力,结构延性系数为4.71,表明结构有很好的延性性能;由于结构节点1至节点7横杆与斜杆都有开孔,且受力复杂,所以破坏程度较为严重,建议在局部节点增加锚固件数量以增加强度。
Pseudo-dynamic test is conducted on a full-scale light-gauge steel framed wall with 1 mm thick. Failure mechanism, deformation properties, rigidity degradation,load-displacement curve and stiffness degeneration under seismic action are investigated. The results show that: the plastic deformation appears under 9 degree frequent earthquake,and the structure shows better seismic performance; the wall nodes are badly deformed under 7 degree rare earthquakes,but carrying capacity still exists, and ductility coefficient is 4.7,which shows that the structure has a good ducility performance. Due to the open hole and complex force of the structural nodes 1 to 7 crossbar and inclined rod, the damage is more serious, and the number of anchoring parts should be increased to increase the strength.
Pseudo-dynamic test is conducted on a full-scale light-gauge steel framed wall with 1 mm thick. Failure mechanism, deformation properties, rigidity degradation,load-displacement curve and stiffness degeneration under seismic action are investigated. The results show that: the plastic deformation appears under 9 degree frequent earthquake,and the structure shows better seismic performance; the wall nodes are badly deformed under 7 degree rare earthquakes,but carrying capacity still exists, and ductility coefficient is 4.7,which shows that the structure has a good ducility performance. Due to the open hole and complex force of the structural nodes 1 to 7 crossbar and inclined rod, the damage is more serious, and the number of anchoring parts should be increased to increase the strength.
引文
[1] Serrette R, Ogunfunmi K. Shear resistance of gypsum-sheathed light gauge steel st[J].Journal of Structural Engineering,1996,122(4):386-389
[2] Serrette R,Lam I,Qi H. Cold-formed steel frame shear walls utilizing structural adhesive[J].Journal of Structural Engineering,2006,132(4):591-599
[3] NAS-2004. North American specification for the design of cold-formed steel structural members[S]. USA: American Iron and Steel Institute,2004
[4] 何保康,蒋路,姚行友,等. 高强冷弯薄壁型钢卷边槽形截面轴压柱的畸变屈曲试验研究[J].建筑结构学报,2006,27 (3): 10-17He Bao-kang, Jiang Lu, Yao Xing-you,et al. Experimental study on distortional buckling of high strength cold-formed steel lipped channel columns under axial compression[J]. Journal of Building Structures,2006,27(3):10-17(in Chinese)
[5] 张耀春,王海明. 冷弯薄壁型钢 C 形截面构件受弯承载力试验研究[J]. 建筑结构学报,2009,30 (3): 53-61Zhang Yao-chun,Wang Hai-ming.Experimental study on bending strength of cold-formed steel C-section members.[J]. Journal of Building Structures,2009,30(3):53-61(in Chinese)
[6] 秦雅菲,张其林,秦中慧,等.冷弯薄壁型钢墙柱骨架的轴压性能试验研究和设计建议[J]. 建筑结构学报,2006,27 (3): 34-41Qin Ya-fei, Zhang Qi-lin, Qin Zhong-hui. Experimental research and design suggestion on cold-formed wall-stud structures subject to centric axial loads.[J]. Journal of Building Structures,2006,27(3):34-41(in Chinese)
[7] Telue Y,Mahendran M.Behaviour of cold-formed steel wall frames lined with plasterboard[J]. Journal of Constructional Steel Research,2001,57(4): 435-452
[8] 周绪红,石宇,周天华,等. 冷弯薄壁型钢组合墙体抗剪性能试验研究[J]. 土木工程学报,2010,43(5): 38-44Zhou Xu-hong,Shi Yu,Zhou Tian-hua, et al.Experimental study of the shear resistance of cold-formed steel stud walls[J]. China Civil Engineering Journal,2010,43(5):38-44(in Chinese)
[9] 石宇,周绪红,等.冷弯薄壁型钢梁-OSB板组合楼盖的抗弯刚度研究[J]. 建筑科学与工程学报,2015,32(6): 50-57Shi Yu,Zhou Xu-hong,et al. Study on flexual stiffness of cold-formed thin-walled steel joists-OSB composite floors[J]. Journal of Architecture and Civil Engineering,2015,32(6):50-57(in Chinese)
[10] 史艳莉,杨金娟.高强冷弯薄壁内卷边C型钢拼合轴压长柱板带加固性能研究[J].工程抗震与加固改造,2014,36(3):72-78Shi Yan-i, Yang Jin-juan. Research on behavior of built-up high strength cold-formed thin-walled C section steel rolled edge long columns under axial compression reinforced with steel board tapes[J].Earthquake Resistant Engineering and Retrofitting,2014,36(3):72-78(in Chinese)
[2] Serrette R,Lam I,Qi H. Cold-formed steel frame shear walls utilizing structural adhesive[J].Journal of Structural Engineering,2006,132(4):591-599
[3] NAS-2004. North American specification for the design of cold-formed steel structural members[S]. USA: American Iron and Steel Institute,2004
[4] 何保康,蒋路,姚行友,等. 高强冷弯薄壁型钢卷边槽形截面轴压柱的畸变屈曲试验研究[J].建筑结构学报,2006,27 (3): 10-17He Bao-kang, Jiang Lu, Yao Xing-you,et al. Experimental study on distortional buckling of high strength cold-formed steel lipped channel columns under axial compression[J]. Journal of Building Structures,2006,27(3):10-17(in Chinese)
[5] 张耀春,王海明. 冷弯薄壁型钢 C 形截面构件受弯承载力试验研究[J]. 建筑结构学报,2009,30 (3): 53-61Zhang Yao-chun,Wang Hai-ming.Experimental study on bending strength of cold-formed steel C-section members.[J]. Journal of Building Structures,2009,30(3):53-61(in Chinese)
[6] 秦雅菲,张其林,秦中慧,等.冷弯薄壁型钢墙柱骨架的轴压性能试验研究和设计建议[J]. 建筑结构学报,2006,27 (3): 34-41Qin Ya-fei, Zhang Qi-lin, Qin Zhong-hui. Experimental research and design suggestion on cold-formed wall-stud structures subject to centric axial loads.[J]. Journal of Building Structures,2006,27(3):34-41(in Chinese)
[7] Telue Y,Mahendran M.Behaviour of cold-formed steel wall frames lined with plasterboard[J]. Journal of Constructional Steel Research,2001,57(4): 435-452
[8] 周绪红,石宇,周天华,等. 冷弯薄壁型钢组合墙体抗剪性能试验研究[J]. 土木工程学报,2010,43(5): 38-44Zhou Xu-hong,Shi Yu,Zhou Tian-hua, et al.Experimental study of the shear resistance of cold-formed steel stud walls[J]. China Civil Engineering Journal,2010,43(5):38-44(in Chinese)
[9] 石宇,周绪红,等.冷弯薄壁型钢梁-OSB板组合楼盖的抗弯刚度研究[J]. 建筑科学与工程学报,2015,32(6): 50-57Shi Yu,Zhou Xu-hong,et al. Study on flexual stiffness of cold-formed thin-walled steel joists-OSB composite floors[J]. Journal of Architecture and Civil Engineering,2015,32(6):50-57(in Chinese)
[10] 史艳莉,杨金娟.高强冷弯薄壁内卷边C型钢拼合轴压长柱板带加固性能研究[J].工程抗震与加固改造,2014,36(3):72-78Shi Yan-i, Yang Jin-juan. Research on behavior of built-up high strength cold-formed thin-walled C section steel rolled edge long columns under axial compression reinforced with steel board tapes[J].Earthquake Resistant Engineering and Retrofitting,2014,36(3):72-78(in Chinese)