开口型压型钢板-混凝土组合楼板抗弯承载力试验研究
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摘要
通过4组不同跨度的开口型压型钢板-混凝土组合楼板的静力试验,研究了组合楼板的裂缝分布、破坏特征和滑移等情况。试验结果表明,开口型压型钢板-混凝土组合楼板破坏以纵向水平剪切黏结破坏形态为主。破坏时压型钢板与混凝土产生纵向剪切裂缝,端部发生相对滑移;设置栓钉和增加楼板的厚度可以提高其抗弯承载力,同时栓钉可以有效减少端部相对滑移;对于大跨度开口型压型钢板-混凝土组合楼板应适当配纵向受拉钢筋以提高其抗弯性能。采用全塑性理论计算的极限抗弯承载力大于试验结果,表明开口型压型钢板-混凝土组合楼板的极限承载力由水平纵向抗剪承载力控制。按极限抗弯承载力设计的开口型组合楼板偏于不安全。
Based on four groups of tests on opened profiled steel sheeting-concrete composite slabs,the crack distribution,failure modes and slippage of the composite slabs are studied.The tests results show the longitudinal shear failure is the dominated failure mode in the opened profiled steel sheeting-concrete composite slabs.Longitudinal shear cracks appear between steel sheeting and concrete when all the specimens fail.The end studs can improve the flexural performance of opened composite slabs and reduce relative slippage.The test results also show that longitudinal tensile reinforcement and increasing the thickness of slabs can enhance the bearing capacity of opened composite slabs.Experimental results of flexural bearing capacity is less than the calculated results using the plastic flexural theory,and ultimate bearing capacity of opened composite slabs is dominated by the longitudinal shear strength.Therefore,designing the opened steel sheeting-concrete composite slabs based on ultimate flexural bearing capacity is not safe enough.
Based on four groups of tests on opened profiled steel sheeting-concrete composite slabs,the crack distribution,failure modes and slippage of the composite slabs are studied.The tests results show the longitudinal shear failure is the dominated failure mode in the opened profiled steel sheeting-concrete composite slabs.Longitudinal shear cracks appear between steel sheeting and concrete when all the specimens fail.The end studs can improve the flexural performance of opened composite slabs and reduce relative slippage.The test results also show that longitudinal tensile reinforcement and increasing the thickness of slabs can enhance the bearing capacity of opened composite slabs.Experimental results of flexural bearing capacity is less than the calculated results using the plastic flexural theory,and ultimate bearing capacity of opened composite slabs is dominated by the longitudinal shear strength.Therefore,designing the opened steel sheeting-concrete composite slabs based on ultimate flexural bearing capacity is not safe enough.
引文
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[15]黄英.压型钢板-混凝土组合楼板弯曲受力性能试验研究[D].福州:福州大学,2002.HUANG Ying.Experimental research on flexural performance of profiled steel sheeting-concrete composite slabs[D].Fuzhou:Fuzhou University,2002.(in Chinese)
[2]聂建国,易卫华.压型钢板-混凝土组合板的受力性能及其计算[J].建筑结构,2005,35(1):49-52.DOI:10.19701/j.jzjg.2005.01.015.NIE Jianguo,YI Weihua.Bearing capacity and calculation method of the profiled steel sheeting-concrete composite slabs[J].Building Structure,2005,35(1):49-52.DOI:10.19701/j.jzjg.2005.01.015.(in Chinese)
[3]陈世鸣.压型钢板-混凝土组合楼板的承载能力研究[J].建筑结构学报,2002,23(3):19-26.DOI:10.14006/j.jzjgxb.2002.03.004.CHEN Shiming.Study on load-carrying capacities of 3WDECK composite slabs[J].Journal of Building Structures,2002,23(3):19-26.DOI:10.14006/j.jzjgxb.2002.03.004.(in Chinese)
[4]吕兆华.带压痕压型钢板-混凝土组合楼板承载能力研究与试验[D].上海:同济大学,2006.LYU Zhaohua.Capacity analysis and experiment of steel deck-concrete composite slabs[D].Shanghai:Tongji University,2006.(in Chinese)
[5]MARIMUTHU V,SEETHARAMAN S,JAYACHANDRAN S A,et al.Experimental studies on composite deck slabs to determine the shear-bond characteristic(m-k)values of the embossed profiled sheet[J].Journal of Constructional Steel Research,2007,63(6):791-803.DOI:10.1016/j.jcsr.2006.07.009.
[6]吴炎海,黄英,邹飞杰.压型钢板-混凝土组合楼板受弯性能的试验研究[J].福建建筑,2003(2):27-30.WU Yanhai,HUANG Ying,ZOU Feijie.Research on flexure performance of the cold-formed steel-deck concrete floor slabs[J].Fujian Architecture&Construction,2003(2):27-30.(in Chinese)
[7]SARAVANAN M,MARIMUTHU V,PRABHA P,et al.Experimental investigations on composite slabs to evaluate longitudinal shear strength[J].Steel and Composite Structures,2012,13(5):489-500.DOI:10.12989/scs.2012.13.5.489.
[8]VALIVONIS J.Analysis of behavior of contact between the profiled steel sheeting and the concrete[J].Journal of Civil Engineering and Management,2006,12(3):187-194.
[9]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/T 50152—2012[S].北京:中国建筑工业出版社,2012.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Standard for Test Method of Concrete Structures:GB/T 50152—2012[S].Beijing:China Architecture&Building Press,2012.(in Chinese)
[10]王森军,杨俊杰.压型钢板混凝土组合板抗弯承载力影响因素的分析[J].浙江工业大学学报,2006,34(5):580-583.WANG Senjun,YANG Junjie.The analysis of bending capacity of steel deck reinforced composite slab[J].Journal of Zhejiang University of Technology,2006,34(5):580-583.(in Chinese)
[11]祝延涛.压型钢板-再生混凝土组合楼板受弯性能试验研究[D].北京:北京工业大学,2013.ZHU Yantao.Experimental study on flexural performance of composite slab with steel deck-recycled concrete[D].Beijing:Beijing University of Technology,2013.(in Chinese)
[12]杨文平,杨勇.闭口型压型钢板-混凝土组合板承载能力试验研究[J].建筑科学,2008,24(5):12,37-42.DOI:10.13614/j.cnki.11-1962/tu.2008.05.010.YANG Wenping,YANG Yong.Experimental study on bearing capacity of composite slabs with closed profiled steel sheeting[J].Building Science,2008,24(5):12,37-42.DOI:10.13614/j.cnki.11-1962/tu.2008.05.010.(in Chinese)
[13]中国工程建设标准化协会.组合楼板设计与施工规范:CECS273:2010[S].北京:中国计划出版社,2010.China Association for Engineering Construction Standardization.Code for Composite Slabs Design and Construction:CECS 273:2010[S].Beijing:China Planning Press,2010.(in Chinese)
[14]曹中州.压型钢板与钢筋混凝土组合楼板抗弯性能研究[D].西安:长安大学,2012.CAO Zhongzhou.Study on flexural capacity of steel deckconcrete composite slabs[D].Xi’an:Chang’an University,2012.(in Chinese)
[15]黄英.压型钢板-混凝土组合楼板弯曲受力性能试验研究[D].福州:福州大学,2002.HUANG Ying.Experimental research on flexural performance of profiled steel sheeting-concrete composite slabs[D].Fuzhou:Fuzhou University,2002.(in Chinese)