考虑蒙皮效应的立体停车框架结构的静力性能分析
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摘要
针对立体停车结构,基于已有的连接件试验数据,利用数值模拟的方法研究了蒙皮效应对结构静力性能的影响。研究了在侧向荷载作用下考虑蒙皮效应时结构侧移的变化,并分析了压型钢板的应力分布及受力机理,考虑了压型钢板布置参数对结构侧向刚度的影响,并讨论了考虑蒙皮效应时合理的支撑布置方式。研究表明:考虑蒙皮效应时,立体停车结构的侧向刚度得到很大提高,当结构层数为12层时其侧移减少了近60%;压型钢板的受力类似于受剪深梁,压型钢板的布置参数,如连接件布置间距、压型钢板的高度等,对结构性能影响较大;在考虑蒙皮效应时,可以减少支撑布置的层数,当支撑布置层数为总层数的1/4时,结构侧移得到了大幅降低。
Based on existing test data of fasteners, diaphragm effects on the static properties of the 3 D parking structure are simulated by numerical modeling method in this paper. The change of the lateral displacement of the structure under the action of lateral load is studied by considering diaphragm effects, then the influences of the layout parameters of the profiled sheet on the lateral stiffness of the structure are investigated, and the stress distribution and stress mechanism of the profiled plate are studied, and the reasonable brace arrangement when considering the diaphragm effects is discussed. The results show that the diaphragm effects provide a large lateral stiffness for the structure under the lateral load, and the structural lateral shift of the 12 stories 3 D parking frame structure decreases by 60%; the layout parameters of the profiled sheet, especially the spacing of the connectors, have great influences on the structural performance; the number of stories with brace layout can be reduced when considering diaphragm effects, and the lateral displacement of the structure is significantly reduced when the number of braced stories is up to 1/4 of the total number of stories.
Based on existing test data of fasteners, diaphragm effects on the static properties of the 3 D parking structure are simulated by numerical modeling method in this paper. The change of the lateral displacement of the structure under the action of lateral load is studied by considering diaphragm effects, then the influences of the layout parameters of the profiled sheet on the lateral stiffness of the structure are investigated, and the stress distribution and stress mechanism of the profiled plate are studied, and the reasonable brace arrangement when considering the diaphragm effects is discussed. The results show that the diaphragm effects provide a large lateral stiffness for the structure under the lateral load, and the structural lateral shift of the 12 stories 3 D parking frame structure decreases by 60%; the layout parameters of the profiled sheet, especially the spacing of the connectors, have great influences on the structural performance; the number of stories with brace layout can be reduced when considering diaphragm effects, and the lateral displacement of the structure is significantly reduced when the number of braced stories is up to 1/4 of the total number of stories.
引文
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[3]汪浩,余华.自动化立体停车库的类型、特点和应用[J].苏州市职业大学学报,2004,15(4):90-92.(WANG Hao,YUHua.Classification and peculiarity of the automatic three-dimension parking systems[J].Journal of Suzhou vocational university,2004,15(4):90-92(in Chinese)).
[4]贺拥军,周绪红,杨承超.隔层耗能桁架式抗侧力体系及其低周往复荷载作用性能研究[J].建筑科学与工程学报,2012,29(2):7-13.(HE Yongjun,ZHOU Xuhong,YANG Chengchao.Research on static properties of the alternation story-height truss lateral-load-resisting system[J].Journal of architecture and civil engineering,2012,29(2):7-13(in Chinese)).
[5]贺拥军,刘小华,周绪红.仿竹型筒式立体停车结构的环箍层布置研究[J].湖南大学学报(自然科学版),2013,40(4):1-7.(HEYongjun,LIU Xiaohua,ZHOU Xuhong.Research on arrangement of hoop-layers of imitating bamboo drum type tridimensional parking structure[J].Journal of Hunan university(natural sciences),2013,40(4):1-7(in Chinese)).
[6]贺拥军,周绪红,唐家云.四边形筒式钢构架立体停车结构的横隔设置研究[J].建筑科学与工程学报,2014,31(3):25-31.(HEYongjun,ZHOU Xuhong,TANG Jiayun.Research on diaphragm arrangement of quadrangular tube-type steel frame tridimensional parking structure[J].Journal of architecture and civil engineering,2014,31(3):25-31(in Chinese)).
[7]季渊,童根树.轻钢结构应力蒙皮设计研究综述[J].工业建筑,2002,32(12):61-63.(JI Yuan,TONG Genshu.Research and design of stressed skin diaphragm in light-weighted structure[J].Industrial construction,2002,32(12):61-63(in Chinese)).
[8]DAVIES J M,BRYAN E R.Manual of stressed skin diaphragm design[M].New York:Granada Publishing,1982:35-41.
[9]刘洋.轻钢结构蒙皮效应的理论与试验研究[D].上海:同济大学,2006.(LIU Yang.Theoretical and experimental research on the stressed skin diaphragm of light-gauge steel structures[D].Shanghai:Tongji University,2006(in Chinese)).
[10]ATREK E.Non-linear analysis of cold-formed steel shear diaphragms[J].Journal of the structural division,1980,106(3):693-710.
[11]NILSON A H,AMMAR A R.Finite element analysis of metal deck shear diaphragms[J].Journal of the structural division,1974,100:711-726.
[12]王振山,苏明周,李志强,等.基于梁-柱连接转动模型变截面门式钢架抗震承载力分析[J].应用力学学报,2017,34(6):1187-1192.(WANG Zhenshan,SU Mingzhou,LI Zhiqiang,et al.Analysis on seismic bearing capacity of portal frame with tapered members based on beam-column connection rotational model[J].Chinese journal of applied mechanics,2017,34(6):1187-1192(in Chinese)).
[13]中华人民共和国住房和城乡建设部.钢结构设计规范:GB50017-2003[S].北京:中国计划出版社,2003.(Ministry of Housing and Urban-Rural Development of the People's Republic of China.Code for design of steel structure:GB 50017-2003[S].Beijing:China Planning Press,2003(in Chinese)).