带暗梁柱的开洞混凝土复合墙板受弯和偏压性能足尺试验研究
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摘要
针对带窗洞复合墙板受弯与受压承载力不足的问题,提出了一种带框复合墙板,即通过在复合墙板内设置暗梁、暗柱来提高其承载力。对5块足尺的带窗洞复合墙板进行四点弯曲试验和偏心受压试验,考察其破坏模态和承载能力。试验结果表明,复合墙板的抗弯刚度较高,受弯荷载满足由美国ASCE/SEI 7-05规范计算得到的关岛风荷载设计值要求;在四点弯曲荷载和偏心受压荷载作用下,复合墙板能实现完全组合作用,两侧混凝土面层变形协调,符合"平截面假定";复合墙板在四点弯曲荷载下发生延性破坏。分别按美国ACI 318M-05《混凝土结构设计规范和注释》和中国GB 50010—2010《混凝土结构设计规范》对复合墙板的受弯承载力进行了计算,计算值与试验值误差最大不超过16%,并且利用两种规范公式计算得到的承载力均较为保守。
Due to the lack of the flexural capacity and compressive bearing capacity on composite wall panels with openings,a composite wall panel in which there are embedded beams and columns to enhance loading capacity was proposed. Based on the four-point bending test and eccentric compression test of five full-scale specimens,the failure modes and bearing capacity were studied. The results show that,the flexural rigidity of composite wall panel is high,and the flexural bearing capacity meets the design requirement of Guam wind load calculated by American ASCE/SEI7-05 code. Under the four-point bending loading and eccentric loading,panels deform in a fully composite manner,that is,the deformation of both wythes shows compatibility and follows the plane-section assumption. The composite wall panels finally fail in ductile mode under four-point bending load. According to the ACI 318 M-05 ‘Code for design of concrete structures and commentary '( USA) and GB 50010—2010 ‘Code for design of concrete structures '( China),the flexural bearing capacity of composite wall panels were calculated. The calculated results agree well with the test results. The calculated ultimate flexural capacity is more conservative than test result.
Due to the lack of the flexural capacity and compressive bearing capacity on composite wall panels with openings,a composite wall panel in which there are embedded beams and columns to enhance loading capacity was proposed. Based on the four-point bending test and eccentric compression test of five full-scale specimens,the failure modes and bearing capacity were studied. The results show that,the flexural rigidity of composite wall panel is high,and the flexural bearing capacity meets the design requirement of Guam wind load calculated by American ASCE/SEI7-05 code. Under the four-point bending loading and eccentric loading,panels deform in a fully composite manner,that is,the deformation of both wythes shows compatibility and follows the plane-section assumption. The composite wall panels finally fail in ductile mode under four-point bending load. According to the ACI 318 M-05 ‘Code for design of concrete structures and commentary '( USA) and GB 50010—2010 ‘Code for design of concrete structures '( China),the flexural bearing capacity of composite wall panels were calculated. The calculated results agree well with the test results. The calculated ultimate flexural capacity is more conservative than test result.
引文
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[16]ASTM.Standard test methods of conducting strength tests of panels for building construction:E72-15[S].West Conshohocken:ASTM,2006.
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[20]EINEA A,SALMON D C,FOGARASI G J,et al.State-of-the-Art of precast concrete sandwich panels[J].PCI Journal,1991,36(6):78-98.
[21]SALMON D C,EINEA A,TADROS M K,et al.Full scale testing of precast concrete sandwich panels[J].ACI Structural Journal,1997,94(4):354-362.
[22]ACI.Building code requirements for structural concrete and commentary:ACI 318M-05[S].Farmington Hills:American Concrete Insitute,2005.
[23]混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2011.(Code for design of concrete structures:GB 50010—2010[S].Beijing:China Architecture&Building Press,2011.(in Chinese))
[24]曹万林,张洁,董宏英,等.带钢筋桁架高强再生混凝土板受弯性能试验研究[J].建筑结构学报,2014,35(10):31-38.(CAO Wanlin,ZHANG Jie,DONG Hongying,et al.Experimental research on flexural performance of high strength recycled aggregate concrete slabs with steel bar truss[J].Journal of Building Structures,2014,35(10):31-38.(in Chinese))
[2]李砚波,冯志勇,戴自强,等.混凝土夹芯承重墙板试验及理论研究[J].四川建筑科学研究,2005,32(5):164-167.(LI Yanbo,FENG Zhiyong,DAI Ziqiang,et al.Experimental study on concrete sandwich panel[J].Sichuan Building Science,2005,32(5):164-167.(in Chinese))
[3]侯和涛,邱灿星,李国强,等.带节能复合墙板钢框架低周反复荷载试验研究[J].工程力学,2012,29(9):177-192.(HOU Hetao,QIU Canxing,LI Guoqiang,et al.Cyclic test on steel frames with energy-saving sandwich composite panels[J].Engineering Mechanics,2012,29(9):177-192.(in Chinese))
[4]侯和涛,邱灿星,李国强.钢框架结构与墙体(板)共同作用的研究[J].钢结构,2010,25(4):25-28.(HOU Hetao,QIU Canxing,LI Guoqiang.Research on the interaction between the steel frames and infilled walls[J].Steel Construction,2010,25(4):25-28.(in Chinese))
[5]赵彤,朱礼敏,陈兵,等.预应力混凝土夹芯板抗弯性能的试验研究[J].建筑科学,2003,19(5):5-9.(ZHAO Tong,ZHU Limin,CHEN Bing,et al.Experimental study on flexural behavior of precast concrete sandwich panels[J].Building Science,2003,19(5):5-9.(in Chinese))
[6]李砚波,杜媛媛,门东浩.混凝土夹芯板受弯性能分析[J].建筑结构,2015,45(16):91-95.(LI Yanbo,DU Yuanyuan,MEN Donghao.Analysis on bending performance of concrete sandwich panels[J].Building Structure,2015,45(16):91-95.(in Chinese))
[7]蒋金梁,干钢,金伟良.混凝土夹芯复合墙板非线性有限元分析[J].建筑结构学报,2010,31(增刊1):319-326.(JIAGN Jinliang,GAN Gang,JIN Weiliang.Analysis on reinforce concrete sandwich wall-panel using nonlinear finite element method[J].Journal of Building Structures,2010,31(Suppl:1):319-326.(in Chinese))
[8]李升才.复合墙板轴心受压试验研究[J].华侨大学学报(自然科学版),2006,27(4):384-387.(LI Shengcai.Experimental study on the axial compression of composite wall panel[J].Journal of Huaqiao University(Natural Science Edition),2006,27(4):384-387.(in Chinese))
[9]张同亿,于庆荣,吴敏哲,等.复合墙板承载力的试验研究[J].建筑结构,2001,31(9):28-31.(ZHANG Tongyi,YU Qingrong,WU Minzhe,et al.Experimental study on the bearing capacity of composite wallboard[J].Building Structure,2001,31(9):28-31.(in Chinese))
[10]CARBONARI G,CAVALARO S H P,CANSARIO M M,et al.Flexural behavior of light-weight sandwich panels composed by concrete and EPS[J].Construction&Building Materials,2012,35(10):792-799.
[11]BENAYOUNE A,SAMAD A A A,TRIKHA D N,et al.Flexural behavior of pre-cast concrete sandwich composite panel-experimental and theoretical investigations[J].Construction&Building Materials,2008,22(4):580-592.
[12]JOSEPH J D R,PRABAKAR J,ALAGUSUNDARAMOORTHY P.Precast concrete sandwich one-way slabs under flexural loading[J].Engineering Structures,2017,138:447-457.
[13]AMRAN Y H M,ALI A A A,RASHID R S M,et al.Structural behavior of axially loaded precast foamed concrete sandwich panels[J].Construction&Building Materials,2016,107:307-320.
[14]侯和涛,胡肖静,李国强,等.节能复合墙板的极限承载力[J].建筑材料学报,2009,12(1):106-111.(HOU Hetao,HU Xiaojing,LI Guoqiang,et al.Ultimate load-bearing capacity of the energy-saving composite sandwich panels[J].Journal of Building Materials,2009,12(1):106-111.(in Chinese))
[15]ASCE.Minimum design loads for buildings and other structures:ASCE/SEI 7-05[S].Reston,VA:American Society of Civil Engineers,2005.
[16]ASTM.Standard test methods of conducting strength tests of panels for building construction:E72-15[S].West Conshohocken:ASTM,2006.
[17]金属材料拉伸试验:第1部分:室温试验方法:GB/T228.1—2010[S].北京:中国标准出版社,2010.(Metallic materials:tensile testing:part 1:method of test at room temperature:GB/T 228.1—2010[S].Beijing:Standards Press of China,2010.(in Chinese))
[18]普通混凝土力学性能试验方法标准:GB/T 50081—2002[S].北京:中国建筑工业出版社,2002.(Standard test method for mechanical properties of ordinary concrete:GB/T 50081—2002[S].Beijing:China Architecture&Building Press,2002.(in Chinese))
[19]叶列平.混凝土结构:上册[M].北京:中国建筑工业出版社,2010:28.(YE Lieping.Concrete structure:part 1[M].Beijing:China Architecture&Building Press,2010:28.(in Chinese))
[20]EINEA A,SALMON D C,FOGARASI G J,et al.State-of-the-Art of precast concrete sandwich panels[J].PCI Journal,1991,36(6):78-98.
[21]SALMON D C,EINEA A,TADROS M K,et al.Full scale testing of precast concrete sandwich panels[J].ACI Structural Journal,1997,94(4):354-362.
[22]ACI.Building code requirements for structural concrete and commentary:ACI 318M-05[S].Farmington Hills:American Concrete Insitute,2005.
[23]混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2011.(Code for design of concrete structures:GB 50010—2010[S].Beijing:China Architecture&Building Press,2011.(in Chinese))
[24]曹万林,张洁,董宏英,等.带钢筋桁架高强再生混凝土板受弯性能试验研究[J].建筑结构学报,2014,35(10):31-38.(CAO Wanlin,ZHANG Jie,DONG Hongying,et al.Experimental research on flexural performance of high strength recycled aggregate concrete slabs with steel bar truss[J].Journal of Building Structures,2014,35(10):31-38.(in Chinese))