箱板式钢结构住宅底部加强区组合钢板墙抗震性能试验研究
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摘要
带混凝土约束面板的组合钢板墙具有合理的破坏模式和良好的抗震性能,可用于箱板式钢结构住宅的底部加强区。在前期有限元分析和试验研究的基础上,设计制作了2个1/3比例的组合钢板墙试件,并进行了低周反复试验。研究了试件的破坏过程、破坏模式、承载力、变形性能等,重点分析了螺栓间距、加劲肋的布置方式等对试件抗震性能的影响。试验结果表明:加劲肋的设置会明显改变钢板墙的破坏模式和抗震性能,即未设置L型加劲肋的组合钢板墙,破坏时只在T型加劲肋两侧形成明显的交叉拉力带,且试件的承载力较低,滞回曲线捏缩严重,耗能能力相对较差;增大螺栓间距的组合钢板墙,破坏时只在中部两排螺栓间形成明显的交叉拉力带,且试件的承载力下降,延性也降低,耗能能力相对较差。提出了箱板式钢结构底部加强区墙体设计的建议。
The composite steel plate wall with concrete restraint panel has feasible failure mode and good seismic behavior,which can be used in the bottom reinforcement area of the box-type steel structure residual buildings. Based on the preliminary finite element analysis and experimental study,two specimens of one-third of full scale of original steel plate wall were designed and manufactured,and a series of quasi-static loading tests were carried out. In these tests,the failure process,failure mode,bearing capacity and deformation performance of the specimens were explored,especially the influence of the bolt spacing and the arrangement of stiffeners on the seismic behavior of the specimen was analyzed. The experimental results showed that the arrangement of stiffeners could obviously change the failure mode and seismic behavior of steel plate wall. When the composite steel plate wall without L-shaped stiffening rib was damaged,the crossed tension fields obviously appeared at the both sides of T-type stiffening ribs. Moreover,the bearing capacity of the specimen was lower,and the hysteretic curve had obvious pinch phenomenon,and the energy dissipation capacity was relatively poor. When the composite steel plate wall with increasing bolt spacing was in the failure process,the cross tension field was formed between the two rows of bolts in the middle of the steel plate wall,with the decrease of bearing capacity,ductility and energy dissipation capacity of the specimen. Finally,the paper put forward the suggestions for the design of the wall of the reinforced area at the bottom of the box-type steel structure.
The composite steel plate wall with concrete restraint panel has feasible failure mode and good seismic behavior,which can be used in the bottom reinforcement area of the box-type steel structure residual buildings. Based on the preliminary finite element analysis and experimental study,two specimens of one-third of full scale of original steel plate wall were designed and manufactured,and a series of quasi-static loading tests were carried out. In these tests,the failure process,failure mode,bearing capacity and deformation performance of the specimens were explored,especially the influence of the bolt spacing and the arrangement of stiffeners on the seismic behavior of the specimen was analyzed. The experimental results showed that the arrangement of stiffeners could obviously change the failure mode and seismic behavior of steel plate wall. When the composite steel plate wall without L-shaped stiffening rib was damaged,the crossed tension fields obviously appeared at the both sides of T-type stiffening ribs. Moreover,the bearing capacity of the specimen was lower,and the hysteretic curve had obvious pinch phenomenon,and the energy dissipation capacity was relatively poor. When the composite steel plate wall with increasing bolt spacing was in the failure process,the cross tension field was formed between the two rows of bolts in the middle of the steel plate wall,with the decrease of bearing capacity,ductility and energy dissipation capacity of the specimen. Finally,the paper put forward the suggestions for the design of the wall of the reinforced area at the bottom of the box-type steel structure.
引文
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[10]中华人民共和国住房和城乡建设部.金属材料拉伸试验:GB/T 228.1—2001[S].北京:中国计划出版社,2010.
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[2]侯蕾.纵横加劲肋钢板剪力墙试验与理论研究[D].西安:西安建筑科技大学,2005.
[3]李峰.钢板剪力墙抗震性能的试验与理论研究[D].西安:西安建筑科技大学,2011.
[4]曾清华,赵伟.竖向荷载下加劲钢板剪力墙力学性能研究[J].山西建筑,2013,9(1):27-29.
[5]孙飞飞,刘桂然.钢板开圆孔的组合钢板墙结构地震反应分析与试验验证[J].建筑结构学报,2009,30(5):82-88.
[6]郭彦林,董全利,周明.防屈曲钢板剪力墙滞回性能的理论与试验研究[J].建筑结构学报,2009,30(1):31-39.
[7]郭彦林,董全利,周明.防屈曲钢板剪力墙弹性性能及混凝土盖板约束刚度研究[J].建筑结构学报,2009,30(1):40-47.
[8]兰涛,赵廷涛,刘贵.箱板式钢结构住宅底部加强区的单片组合墙体有限元分析[J].钢结构,2017,32(11):84-90.
[9]兰涛,赵廷涛,门进杰,等.带肋箱板式钢结构住宅底部加强区墙体抗震性能试验研究[J].工业建筑,2018,48(9):56-62.
[10]中华人民共和国住房和城乡建设部.金属材料拉伸试验:GB/T 228.1—2001[S].北京:中国计划出版社,2010.
[11]中华人民共和国建设部.建筑抗震试验方法规程:JGJ 101—96[S].北京:中国建筑工业出版社,1996.
[12]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1989:45.
[13]中华人民共和国建设部.建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.
[14]中华人民共和国住房和城乡建设部.混凝土结构试验方法标准:GB 50152—1992[S].北京:中国建筑工业出版社,1992.