开圆孔波纹腹板钢梁弹塑性抗剪屈曲试验及设计方法研究
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摘要
为研究波纹腹板H型钢梁开孔后的受剪性能,设计完成4个试件的受剪承载力试验。试验设计为两端简支梁的跨中单调加载,试验中监测试件跨中位移,得到试件的荷载-位移曲线、极限荷载和破坏形态等。采用ABAQUS对其进行数值模拟,将模拟结果与试验对比得到,有限元模型能较好地模拟各试件的受载变形过程。参考现有未开孔波纹腹板的弹塑性屈曲计算方法,根据试验结果及有限元参数分析结果,提出波纹腹板开孔后的弹塑性承载力的计算式。研究表明,开圆孔后的波纹腹板均发生整体剪切屈曲破坏,现有的未开孔波纹腹板弹塑性屈曲计算公式对于开孔后的波纹腹板偏于不安全,文中提出的公式与试验及参数分析的结果相比具有较好的安全性,且形式简单、便于采用。
To investigate the mechanical behaviour of corrugated web girders with circular openings subjected to shear, 4 specimens for shear bearing capacity were tested. Simply-supported beams were loaded monotonically in the midspan, the midspan displacement was monitored, and some parameters, such as the load-displacement curves, the ultimate load and failure mode, were obtained. The finite element analysis was carried out by using ABAQUS, and the simulation results agree well with the experimental ones. Referring to the existing calculation methods for elastic-plastic buckling of corrugated web H-beam without opening, the calculation expression for the corrugated web H-beam with circular opening was proposed based on the experiment and finite element parametric analysis results. The research results show that the results by the proposed calculation formula has good security and simple form when compared with the test results and finite element parametric analysis.
To investigate the mechanical behaviour of corrugated web girders with circular openings subjected to shear, 4 specimens for shear bearing capacity were tested. Simply-supported beams were loaded monotonically in the midspan, the midspan displacement was monitored, and some parameters, such as the load-displacement curves, the ultimate load and failure mode, were obtained. The finite element analysis was carried out by using ABAQUS, and the simulation results agree well with the experimental ones. Referring to the existing calculation methods for elastic-plastic buckling of corrugated web H-beam without opening, the calculation expression for the corrugated web H-beam with circular opening was proposed based on the experiment and finite element parametric analysis results. The research results show that the results by the proposed calculation formula has good security and simple form when compared with the test results and finite element parametric analysis.
引文
[1]邱介尧,李国强.开圆孔波纹腹板钢梁弹性抗剪屈曲[J].上海交通大学学报,2016,50(3):357-363(Qiu Jieyao,Li Guoqiang.Elastic shear buckling of corrugated web girders with circular opening[J].Journal of Shanghai Jiaotong University,2016,50(3):357-363(in Chinese))
[2]Elgaaly M,Hamilton R W,Seshadri A.Shear strength of beams with corrugated webs[J].Journal of Structural Engineering,1996,122(4):390-398
[3]Easley J T.Buckling formulas for corrugated metal shear diaphragms[J].Journal of the Structural Division,1975,101(7):1403-1417
[4]Eurocode 3:Design of steel structures Part 1-5:Plated structural elements[S].Brussels:European Committee for Standardisation,1993
[5]张哲.波纹腹板H型钢及组合梁力学性能理论与试验研究[D].上海:同济大学,2009(Zhang Zhe.Theoretical and experimental research on the H-beams and the composite beams with corrugated webs[D].Shanghai:Tongji University,2009(in Chinese))
[6]李国强,张哲,孙飞飞.波纹腹板H型钢梁抗剪承载力[J].同济大学学报:自然科学版,2009,37(6):709-714(Li Guoqiang,Zhang Zhe,Sun Feifei.Shear strength of H-beam with corrugated webs[J].Journal of Tongji University:Natural Science,2009,37(6):709-714(in Chinese))
[7]郭彦林,张庆林,王小安.波浪腹板工形构件抗剪承载力设计理论及试验研究[J].土木工程学报,2010,43(10):45-52(Guo Yanlin,Zhang Qinglin,Wang Xiaoan.A theoretical and experimental study of the shear strength of H-shaped members with sinusoidal corrugated webs[J].China Civil Engineering Journal,2010,43(10):45-52(in Chinese))
[8]CECS 291:2011波纹腹板钢结构技木规程[S].北京:中国计划出版社,2011(CECS 291:2011 Technical specification for steel structures with corrugated webs[S].Beijing:China Planning Press,2011(in Chinese))
[9]张旭乔,郭彦林,姜子钦.腹板开有圆孔的波浪腹板工形构件抗剪和抗弯承载力研究[J].工业建筑,2012,42(7):37-44(Zhang Xuqiao,Guo Yanlin,Jiang Ziqin.Shear and bend-carrying capacity of H-shaped members with sinusoidal corrugated web with openings[J].Industrial Construction,2012,42(7):37-44(in Chinese))
[2]Elgaaly M,Hamilton R W,Seshadri A.Shear strength of beams with corrugated webs[J].Journal of Structural Engineering,1996,122(4):390-398
[3]Easley J T.Buckling formulas for corrugated metal shear diaphragms[J].Journal of the Structural Division,1975,101(7):1403-1417
[4]Eurocode 3:Design of steel structures Part 1-5:Plated structural elements[S].Brussels:European Committee for Standardisation,1993
[5]张哲.波纹腹板H型钢及组合梁力学性能理论与试验研究[D].上海:同济大学,2009(Zhang Zhe.Theoretical and experimental research on the H-beams and the composite beams with corrugated webs[D].Shanghai:Tongji University,2009(in Chinese))
[6]李国强,张哲,孙飞飞.波纹腹板H型钢梁抗剪承载力[J].同济大学学报:自然科学版,2009,37(6):709-714(Li Guoqiang,Zhang Zhe,Sun Feifei.Shear strength of H-beam with corrugated webs[J].Journal of Tongji University:Natural Science,2009,37(6):709-714(in Chinese))
[7]郭彦林,张庆林,王小安.波浪腹板工形构件抗剪承载力设计理论及试验研究[J].土木工程学报,2010,43(10):45-52(Guo Yanlin,Zhang Qinglin,Wang Xiaoan.A theoretical and experimental study of the shear strength of H-shaped members with sinusoidal corrugated webs[J].China Civil Engineering Journal,2010,43(10):45-52(in Chinese))
[8]CECS 291:2011波纹腹板钢结构技木规程[S].北京:中国计划出版社,2011(CECS 291:2011 Technical specification for steel structures with corrugated webs[S].Beijing:China Planning Press,2011(in Chinese))
[9]张旭乔,郭彦林,姜子钦.腹板开有圆孔的波浪腹板工形构件抗剪和抗弯承载力研究[J].工业建筑,2012,42(7):37-44(Zhang Xuqiao,Guo Yanlin,Jiang Ziqin.Shear and bend-carrying capacity of H-shaped members with sinusoidal corrugated web with openings[J].Industrial Construction,2012,42(7):37-44(in Chinese))