考虑周边结构约束影响的RC框架结构防连续倒塌性能研究
|
摘要
为了考察周边结构约束对钢筋混凝土(RC)框架结构防连续倒塌承载能力的影响,该文通过QianK等进行的中柱移除的框架子结构拟静力试验,校核了论文中ABAQUS软件建立的框架子结构精细有限元分析模型的准确性。模拟所得的荷载位移曲线与试验曲线吻合良好,较好地模拟了中柱移除至子结构破坏的全过程。在成功进行模型校核的基础上,通过改变平面框架两侧边跨的约束情况,分析了两侧边跨约束对所研究子结构防连续倒塌承载力的影响;其次通过对比考虑楼板与不考虑楼板的单层空间结构的承载力,分析了楼板在结构防连续倒塌受力过程中对提高压拱阶段和悬链线阶段承载力的作用,讨论了楼板对连续倒塌各个受力阶段不同的影响;最后建立了多层空间框架结构模型,研究框架底层柱移除过程中结构的承载能力,分析发现楼层数的增加,成倍地提高框架结构承载力,并对连续倒塌各个受力阶段产生不同的影响。
This study investigated the effects of surrounding structural constraints on the bearing capacity of progressive collapse resistance of reinforced concrete(RC) frame structures.The accuracy of the sub-structural detailed finite element model established by the ABAQUS software was verified by the Qian K's pseudo-static tests via the middle column removal of the sub-frame.The load-displacement curves obtained from the simulation were in good agreement with tested results,and the whole processes of the middle column removal until the sub-structure failure were well simulated.After the verification of the model,the effects of lateral span constraints on the plane sub-structural progressive collapse capacity were studied by varying the lateral span constraints.The effects of floor slab on improving the bearing capacity of arch and catenary stage were analyzed by comparing the capacity of a single-story space structure with or without considering the slab.Different effects of slab on variousstages of progressive collapse were discussed.Multi-stories space structural models were established to study the structural bearing capacity during bottom column removal.The results show that increasing the number of stories multiplied the bearing capacity of the frame structure and exerted different effects on various stages of progressive collapse of RC frame structures.
This study investigated the effects of surrounding structural constraints on the bearing capacity of progressive collapse resistance of reinforced concrete(RC) frame structures.The accuracy of the sub-structural detailed finite element model established by the ABAQUS software was verified by the Qian K's pseudo-static tests via the middle column removal of the sub-frame.The load-displacement curves obtained from the simulation were in good agreement with tested results,and the whole processes of the middle column removal until the sub-structure failure were well simulated.After the verification of the model,the effects of lateral span constraints on the plane sub-structural progressive collapse capacity were studied by varying the lateral span constraints.The effects of floor slab on improving the bearing capacity of arch and catenary stage were analyzed by comparing the capacity of a single-story space structure with or without considering the slab.Different effects of slab on variousstages of progressive collapse were discussed.Multi-stories space structural models were established to study the structural bearing capacity during bottom column removal.The results show that increasing the number of stories multiplied the bearing capacity of the frame structure and exerted different effects on various stages of progressive collapse of RC frame structures.
引文
[1]Griffiths H,Pugsley A,Saunders O.Report of the inquiry into the collapse of flats at Ronan Point,canning town:presented to the Minister of Housing and Local Government[R].London:HMSO,1968.
[2]Powell G.Progressive collapse:Case studies using nonlinear analysis[C].New York:Structures Congress,2005:1-14.
[3]Zdenfk P B.Mechanics of progressive collapse:learning from world trade center and building demolitions[J].Journal of Engineering Mechanics,2007,133(3):308-319.
[4]易伟建,何庆峰,肖岩.钢筋混凝土框架结构抗连续倒塌性能的试验研究[J].建筑结构学报.2007,28(5):104-117.Yi Weijian,He Qingfeng,Xiao Yan.Experimental study on progressive collapse resistance of reinforced concrete frame structures[J].Journal of Building Structure,2007,28(5):104-117.(in Chinese)
[5]Su Y,Tian Y,Song X.Progressive collapse resistance of axially-restrained frame beams[J].ACI Structural Journal,2009,106(5):600-607.
[6]Lew H S,Bao Y H,Sadek F,et al.An experimental and computational study of reinforced concrete assemblies under a column removal scenario[R].Maryland,U.S.Department of Commerce,2011.
[7]陆新征,叶列平,潘鹏,等.钢筋混凝土框架结构拟静力倒塌试验研究及数值模拟竞赛Ⅰ:框架试验[J].建筑结构,2012,42(11):19-22.Lu Xinzheng,Ye Lieping,Pan Peng,et al.Pseudo static collapse test and numerical simulation competition of reinforced concrete frame structure I:frame test[J].Building Structure,2012,42(11):19-22.(in Chinese)
[8]陆新征,叶列平,潘鹏,等.钢筋混凝土框架结构拟静力倒塌试验研究及数值模拟竞赛Ⅱ:关键构件试验[J].建筑结构2012,42(11):23-26.Lu Xinzheng,Ye Lieping,Pan Peng,et al.Pseudo static collapse test and numerical simulation competition of reinforced concrete frame structureⅡ:Key component test[J].Building Structure,2012,42(11):23-26.(in Chinese)
[9]中国建筑学会建筑结构防倒塌专业委员.钢筋混凝土框架结构拟静力倒塌试验研究及数值模拟竞赛Ⅲ:模拟结果分析[J].建筑结构,2012,42(11):27-30.Member of building structural collapse prevention committee of Chinese Architectural Society.Pseudo static collapse test and numerical simulation competition of reinforced concrete frame structureⅢ:Analysis of simulation results[J].Building Structure,2012,42(11):27-30.(in Chinese)
[10]Bao Y,Kunnath S K,El-Tawil S,et al.Micromodelbased simulation of progressive collapse:RC frame structure[J].Journal of Structural Engineering,2008,134(7):1079-1091.
[11]Ren P Q,Li Y,Lu X Z,et al.Experimental investigation of progressive collapse resistance of one-way reinforced concrete beam-slab substructures under a middlecolumn-removal scenario[J].Engineering Structures,2016,118(1):28-40.
[12]Lu X Z,Lin K Q,Li Y,et al.Experimental investigation of RC beam-slab substructures against progressive collapse subject to an edge-column-removal scenario[J].Engineering Structures,2017,149(1):91-103.
[13]Yu J,Luo L,Ge C.Numerical investigation on structural behavior of RC beam-slab assemblies under an exterior column removal scenario[J].High Tech Concrete:Where Technology and Engineering Meet,2018,1(1):1252-1262.
[14]Yu J,Luo L Z,Li Y.Numerical study of progressive collapse resistance of RC beam-slab substructures under perimeter column removal scenarios[J].Engineering Structures,2018,159(1):14-27.
[15]Pham A T,Lim N S,Tan K H.Investigations of tensile membrane action in beam-slab systems under progressive collapse subject to different loading configurations and boundary conditions[J].Engineering Structures,2017,150(1):520-536.
[16]Dat P X,Hai T K.Membrane actions of RC slabs in mitigating progressive collapse of building structures[J].Engineering Structures,2013,55(4):107-115.
[17]刁梦竹,李易,陆新征,等.钢筋混凝土楼板连续倒塌的一种简化模拟方法[J].工程力学,2016,33(增刊):72-78.Diao Mengzhu,Li Yi,Lu Xingzheng,et al.A simplified simulation method for continuous collapse of reinforced concrete floor[J].Engineering Mechanics,2016,33(Suppl):72-78.(in Chinese)
[18]周育泷,李易,陆新征,等.钢筋混凝土框架抗连续倒塌的压拱机制分析模型[J].工程力学,2016,33(4):34-42.Zhou Yulong,Li Yi,Lu Xingzheng,et al.Analysis model of compression arch mechanism for progressive collapse of reinforced concrete frame[J].Engineering Mechanics,2016,33(4):34-42.(in Chinese)
[19]左文武.楼板对混凝土框架结构抗连续倒塌性能的影响[D].兰州:兰州理工大学,2014.Zuo Wenwu.Effect of floor slab on concrete frame structure resistance to progressive collapse[D].Lanzhou:Lanzhou University of Technology,2014.(in Chinese)
[20]刘帅.RC框架结构抗连续倒塌的ABAQUS仿真分析[D].石家庄:石家庄铁道学院,2012.Liu Shuai.ABAQUS simulation analysis of progressive collapse of RC frame structure[D].Shijiazhuang:Shijiazhuang Railway Institute,2012.(in Chinese)
[21]李晓路,李寰,方士超,等.RC框架结构梁板柱空间协同抗连续性倒塌非线性有限元分析[J].建筑结构,2017,47(21):67-72.Li Xiaolu,Li huan,Fang Shichao,et al.RC frame slab column space to resist progressive collapse for nonlinear finite element analysis[J].Building Structure,2017,47(21):67-72.(in Chinese)
[22]戎贤,张健新,李艳艳.钢筋混凝土异形柱空间框架抗倒塌试验研究[J].工程力学,2016,33(10):189-196.Rong Xian,Zhang Jianxin,Li Yanyan.Experimental study on progressive collapse of reinforced concrete special shaped column space frame[J].Engineering Mechanics,2016,33(10):189-196.(in Chinese)
[23]Jun Y,Tan K H.Structural behavior of RC beam-column subassemblages under a middle column removal scenario[J].Journal of Structural Engineering,2013,139(2):233-250.
[24]Qian K,Li B,Ma J X.Load-carrying mechanism to resist progressive collapse of RC buildings[J].Journal of Structural Engineering,2015,141(2):4014107-1-4014107-14.
[25]刘巍,徐明,陈忠范.ABAQUS混凝土损伤塑性模型参数标定及验证[J].工业建筑,2014,44(增刊):167-171.Liu Wei,Xu Ming,Chen Zhongfan.Parameter calibration and verification of damage plasticity model for ABAQUS concrete[J].Industrial Construction.2014,44(Suppl):167-171.(in Chinese)
[26]江见鲸,陆新征.混凝土结构有限元分析[M].北京:清华大学出版社,2005.Jiang Jianjing,Lu Xingzheng.Finite element analysis of concrete structure[M].Beijing:Tsinghua University Press,2005.(in Chinese)
[27]GB 50010-2010,混凝土结构设计规范[S].北京,中国建筑工业出版社,2010.GB 50010-2010,Code for design of concrete structures[S].Beijing,China Architecture&Building Press,2010.(in Chinese)
[2]Powell G.Progressive collapse:Case studies using nonlinear analysis[C].New York:Structures Congress,2005:1-14.
[3]Zdenfk P B.Mechanics of progressive collapse:learning from world trade center and building demolitions[J].Journal of Engineering Mechanics,2007,133(3):308-319.
[4]易伟建,何庆峰,肖岩.钢筋混凝土框架结构抗连续倒塌性能的试验研究[J].建筑结构学报.2007,28(5):104-117.Yi Weijian,He Qingfeng,Xiao Yan.Experimental study on progressive collapse resistance of reinforced concrete frame structures[J].Journal of Building Structure,2007,28(5):104-117.(in Chinese)
[5]Su Y,Tian Y,Song X.Progressive collapse resistance of axially-restrained frame beams[J].ACI Structural Journal,2009,106(5):600-607.
[6]Lew H S,Bao Y H,Sadek F,et al.An experimental and computational study of reinforced concrete assemblies under a column removal scenario[R].Maryland,U.S.Department of Commerce,2011.
[7]陆新征,叶列平,潘鹏,等.钢筋混凝土框架结构拟静力倒塌试验研究及数值模拟竞赛Ⅰ:框架试验[J].建筑结构,2012,42(11):19-22.Lu Xinzheng,Ye Lieping,Pan Peng,et al.Pseudo static collapse test and numerical simulation competition of reinforced concrete frame structure I:frame test[J].Building Structure,2012,42(11):19-22.(in Chinese)
[8]陆新征,叶列平,潘鹏,等.钢筋混凝土框架结构拟静力倒塌试验研究及数值模拟竞赛Ⅱ:关键构件试验[J].建筑结构2012,42(11):23-26.Lu Xinzheng,Ye Lieping,Pan Peng,et al.Pseudo static collapse test and numerical simulation competition of reinforced concrete frame structureⅡ:Key component test[J].Building Structure,2012,42(11):23-26.(in Chinese)
[9]中国建筑学会建筑结构防倒塌专业委员.钢筋混凝土框架结构拟静力倒塌试验研究及数值模拟竞赛Ⅲ:模拟结果分析[J].建筑结构,2012,42(11):27-30.Member of building structural collapse prevention committee of Chinese Architectural Society.Pseudo static collapse test and numerical simulation competition of reinforced concrete frame structureⅢ:Analysis of simulation results[J].Building Structure,2012,42(11):27-30.(in Chinese)
[10]Bao Y,Kunnath S K,El-Tawil S,et al.Micromodelbased simulation of progressive collapse:RC frame structure[J].Journal of Structural Engineering,2008,134(7):1079-1091.
[11]Ren P Q,Li Y,Lu X Z,et al.Experimental investigation of progressive collapse resistance of one-way reinforced concrete beam-slab substructures under a middlecolumn-removal scenario[J].Engineering Structures,2016,118(1):28-40.
[12]Lu X Z,Lin K Q,Li Y,et al.Experimental investigation of RC beam-slab substructures against progressive collapse subject to an edge-column-removal scenario[J].Engineering Structures,2017,149(1):91-103.
[13]Yu J,Luo L,Ge C.Numerical investigation on structural behavior of RC beam-slab assemblies under an exterior column removal scenario[J].High Tech Concrete:Where Technology and Engineering Meet,2018,1(1):1252-1262.
[14]Yu J,Luo L Z,Li Y.Numerical study of progressive collapse resistance of RC beam-slab substructures under perimeter column removal scenarios[J].Engineering Structures,2018,159(1):14-27.
[15]Pham A T,Lim N S,Tan K H.Investigations of tensile membrane action in beam-slab systems under progressive collapse subject to different loading configurations and boundary conditions[J].Engineering Structures,2017,150(1):520-536.
[16]Dat P X,Hai T K.Membrane actions of RC slabs in mitigating progressive collapse of building structures[J].Engineering Structures,2013,55(4):107-115.
[17]刁梦竹,李易,陆新征,等.钢筋混凝土楼板连续倒塌的一种简化模拟方法[J].工程力学,2016,33(增刊):72-78.Diao Mengzhu,Li Yi,Lu Xingzheng,et al.A simplified simulation method for continuous collapse of reinforced concrete floor[J].Engineering Mechanics,2016,33(Suppl):72-78.(in Chinese)
[18]周育泷,李易,陆新征,等.钢筋混凝土框架抗连续倒塌的压拱机制分析模型[J].工程力学,2016,33(4):34-42.Zhou Yulong,Li Yi,Lu Xingzheng,et al.Analysis model of compression arch mechanism for progressive collapse of reinforced concrete frame[J].Engineering Mechanics,2016,33(4):34-42.(in Chinese)
[19]左文武.楼板对混凝土框架结构抗连续倒塌性能的影响[D].兰州:兰州理工大学,2014.Zuo Wenwu.Effect of floor slab on concrete frame structure resistance to progressive collapse[D].Lanzhou:Lanzhou University of Technology,2014.(in Chinese)
[20]刘帅.RC框架结构抗连续倒塌的ABAQUS仿真分析[D].石家庄:石家庄铁道学院,2012.Liu Shuai.ABAQUS simulation analysis of progressive collapse of RC frame structure[D].Shijiazhuang:Shijiazhuang Railway Institute,2012.(in Chinese)
[21]李晓路,李寰,方士超,等.RC框架结构梁板柱空间协同抗连续性倒塌非线性有限元分析[J].建筑结构,2017,47(21):67-72.Li Xiaolu,Li huan,Fang Shichao,et al.RC frame slab column space to resist progressive collapse for nonlinear finite element analysis[J].Building Structure,2017,47(21):67-72.(in Chinese)
[22]戎贤,张健新,李艳艳.钢筋混凝土异形柱空间框架抗倒塌试验研究[J].工程力学,2016,33(10):189-196.Rong Xian,Zhang Jianxin,Li Yanyan.Experimental study on progressive collapse of reinforced concrete special shaped column space frame[J].Engineering Mechanics,2016,33(10):189-196.(in Chinese)
[23]Jun Y,Tan K H.Structural behavior of RC beam-column subassemblages under a middle column removal scenario[J].Journal of Structural Engineering,2013,139(2):233-250.
[24]Qian K,Li B,Ma J X.Load-carrying mechanism to resist progressive collapse of RC buildings[J].Journal of Structural Engineering,2015,141(2):4014107-1-4014107-14.
[25]刘巍,徐明,陈忠范.ABAQUS混凝土损伤塑性模型参数标定及验证[J].工业建筑,2014,44(增刊):167-171.Liu Wei,Xu Ming,Chen Zhongfan.Parameter calibration and verification of damage plasticity model for ABAQUS concrete[J].Industrial Construction.2014,44(Suppl):167-171.(in Chinese)
[26]江见鲸,陆新征.混凝土结构有限元分析[M].北京:清华大学出版社,2005.Jiang Jianjing,Lu Xingzheng.Finite element analysis of concrete structure[M].Beijing:Tsinghua University Press,2005.(in Chinese)
[27]GB 50010-2010,混凝土结构设计规范[S].北京,中国建筑工业出版社,2010.GB 50010-2010,Code for design of concrete structures[S].Beijing,China Architecture&Building Press,2010.(in Chinese)