侧向冲击下方钢管混凝土构件动力响应的参数研究
|
摘要
运用ABAQUS/Explicit有限元软件对方钢管混凝土(CFRST)构件的侧向冲击过程进行数值模拟,研究冲击高度、截面含钢率、冲击位置、材料强度、构件长细比等对方钢管混凝土构件冲击力和挠度变形的影响;基于刚塑性梁理论,提出计算方钢管混凝土构件截面动力受弯承载力提高系数的实用计算公式。研究结果表明:截面含钢率和长细比是影响冲击持续时间和冲击力平台值的敏感因素;减小冲击高度和构件长细比,增加截面含钢率可显著减小构件冲击点处的挠度;钢材屈服强度、截面含钢率、长细比和冲击速度是影响构件截面动力受弯承载力的重要参数。
ABAQUS/Explicit software was used to simulate the concrete-filled rectangular steel tube(CFRST) specimens under lateral impact. The effects of five main parameters including impact height, sectional steel ratio, impact location,material strength and slenderness ratio on impact force and deflection of CFRST were studied. Based on the rigid-plastic beam theory, a useful formula was proposed to calculate the dynamic flexural capacity strengthening factor(cross-section dimension) of the CFRST. The results show that sectional steel ratio and slenderness ratio are the sensitive factors that affect impact time duration and force platform value. Reducing the impact height and slenderness ratio, and increasing the sectional steel ratio can decrease the CFRST deflection remarkably at the impact point. The steel yield strength,sectional steel ratio, slenderness ratio and impact velocity are proved to be the control parameters of the CFRST cross-sectional dynamic flexural capacity.
ABAQUS/Explicit software was used to simulate the concrete-filled rectangular steel tube(CFRST) specimens under lateral impact. The effects of five main parameters including impact height, sectional steel ratio, impact location,material strength and slenderness ratio on impact force and deflection of CFRST were studied. Based on the rigid-plastic beam theory, a useful formula was proposed to calculate the dynamic flexural capacity strengthening factor(cross-section dimension) of the CFRST. The results show that sectional steel ratio and slenderness ratio are the sensitive factors that affect impact time duration and force platform value. Reducing the impact height and slenderness ratio, and increasing the sectional steel ratio can decrease the CFRST deflection remarkably at the impact point. The steel yield strength,sectional steel ratio, slenderness ratio and impact velocity are proved to be the control parameters of the CFRST cross-sectional dynamic flexural capacity.
引文
[1]TOMII M,SAKINO K,XIAO Yan.Earthquake-resisting hysteretic behaviour of reinforced concrete short columns confined by steel tube[C]//Proceedings of the International Specialty Conference on Concrete Filled Steel Tubular Structures,Harbin,China,1985:119-125.
[2]BAMBACH M R,JAMA H,ZHAO X L,et al.Hollow and concrete filled steel hollow sections under transverse impact loads[J].Engineering Structures,2008,30(10):2859-2870.
[3]BAMBACH M R.Design of hollow and concrete filled steel and stainless steel tubular columns for transverse impact loads[J].Steel Construction,2011,49(10):1251-1260.
[4]郭玉荣,李炎蓁,霍静思,等.水平冲击荷载作用下钢管混凝土柱动力响应试验与数值模拟[J].建筑科学与工程学报,2017,34(6):28-35.GUO Yurong,LI Yanzhen,HUO Jingsi,et al.Dynamic response experiment and numerical simulation of CFST columns under lateral impact load[J]Journal of Architecture and Civil Engineering,2017,34(6):28-35.
[5]王蕊,李珠,任够平,等.侧向冲击载荷作用下钢管混凝土梁动力响应的实验和理论研究[J].工程力学,2008,25(6):75-80.WANG Rui,LI Zhu,REN Guoping,et al.Studies on dynamic response of concrete filled steel tube under lateral impact loading[J].Engineering Mechanic,2008,25(6):75-80.
[6]HAN Linhai,HOU Chuanchuan,ZHAO Xiaoling,et al.Behaviour of high-strength concrete filled steel tubes under transverse impact loading[J].Journal of Constructional Steel Research,2014,92(1):25-39.
[7]WANG Rui,HAN Linhai,ZHAO Xiaoling,et al.Analytical behavior of concrete filled double steel tubular(CFDST)members under lateral impact[J].Thin-Walled Structures,2016,101:129-140.
[8]AGHDAMY S,THAMBIRATNAM D P,DHANASEKAR M,et al.Computer analysis of impact behavior of concrete filled steel tube columns[J].Advances in Engineering Software,2015,89:52-63.
[9]侯川川.低速横向冲击荷载下圆钢管混凝土构件的力学性能研究[D].北京:清华大学土木工程系,2012:88-98.HOU Chuanchuan.Study on performance of circular concrete-filled steel tubular(CFST)members under low velocity transverse impact[D].Beijing:Tsinghua University.Department of Civil Engineering,2012:88-98
[10]王蕊.钢管混凝土结构构件在侧向冲击下动力响应及其损伤破坏的研究[D].太原:太原理工大学建筑与土木工程学院,2008:72-85.WANG Rui.Study on the dynamic response and damage failure of concrete filled steel tube under lateral impact[D].Taiyuan:Taiyuan University of Technology.College of Civil and Environmental Engineering,2008:72-85.
[11]瞿海雁,李国强,孙建运,等.侧向冲击作用下圆钢管混凝土构件的数值模拟分析[J].建筑科学与工程学报,2010,27(1):89-96.QU Haiyan,LI Guoqiang,SUN Jianyun,et al.Numerical simulation analysis of circular concrete-filled steel tube specimen under lateral impact[J].Journal of Architecture and Civil Engineering,2010,27(1):89-96.
[12]李文亮.侧向冲击钢管混凝土构件的试验研究和仿真数值分析[D].太原:太原理工大学建筑与土木工程学院,2007:39-50.LI Wenliang.Experiment research and emulation numerical analysis on steel tube-confined concrete under the lateral impact[D].Taiyuan:Taiyuan University of Technology.College of Civil and Environmental Engineering,2007:39-50.
[13]刘威.钢管混凝土局部受压时的工作机理研究[D].福州:福州大学土木建筑工程学院,2005:58-66.LIU Wei,Research on mechanism of concrete-filled tubes subjected to local compression[D].Fuzhou:Fuzhou University.College of Civil Engineering and Architecture,2005:58-66.
[14]GB 50010-2010,混凝土结构设计规范[S].GB 50010-2010,Code for design of concrete structures[S].
[15]雷拓,钱江,刘成清.混凝土损伤塑性模型应用研究[J].结构工程师,2008,24(2):22-27.LEI Tou,QIAN Jiang,LIU Chengqing.Application of damaged plasticity model for concrete[J].Structural Engineers,2008,24(2):22-27.
[16]韩林海.钢管混凝土结构-理论与实践[M].北京:科学出版社,2007:168-184.HAN Linhai.Concrete filled steel tubular structural from theory to practice[M].Beijing:Science Press,2007:168-184.
[2]BAMBACH M R,JAMA H,ZHAO X L,et al.Hollow and concrete filled steel hollow sections under transverse impact loads[J].Engineering Structures,2008,30(10):2859-2870.
[3]BAMBACH M R.Design of hollow and concrete filled steel and stainless steel tubular columns for transverse impact loads[J].Steel Construction,2011,49(10):1251-1260.
[4]郭玉荣,李炎蓁,霍静思,等.水平冲击荷载作用下钢管混凝土柱动力响应试验与数值模拟[J].建筑科学与工程学报,2017,34(6):28-35.GUO Yurong,LI Yanzhen,HUO Jingsi,et al.Dynamic response experiment and numerical simulation of CFST columns under lateral impact load[J]Journal of Architecture and Civil Engineering,2017,34(6):28-35.
[5]王蕊,李珠,任够平,等.侧向冲击载荷作用下钢管混凝土梁动力响应的实验和理论研究[J].工程力学,2008,25(6):75-80.WANG Rui,LI Zhu,REN Guoping,et al.Studies on dynamic response of concrete filled steel tube under lateral impact loading[J].Engineering Mechanic,2008,25(6):75-80.
[6]HAN Linhai,HOU Chuanchuan,ZHAO Xiaoling,et al.Behaviour of high-strength concrete filled steel tubes under transverse impact loading[J].Journal of Constructional Steel Research,2014,92(1):25-39.
[7]WANG Rui,HAN Linhai,ZHAO Xiaoling,et al.Analytical behavior of concrete filled double steel tubular(CFDST)members under lateral impact[J].Thin-Walled Structures,2016,101:129-140.
[8]AGHDAMY S,THAMBIRATNAM D P,DHANASEKAR M,et al.Computer analysis of impact behavior of concrete filled steel tube columns[J].Advances in Engineering Software,2015,89:52-63.
[9]侯川川.低速横向冲击荷载下圆钢管混凝土构件的力学性能研究[D].北京:清华大学土木工程系,2012:88-98.HOU Chuanchuan.Study on performance of circular concrete-filled steel tubular(CFST)members under low velocity transverse impact[D].Beijing:Tsinghua University.Department of Civil Engineering,2012:88-98
[10]王蕊.钢管混凝土结构构件在侧向冲击下动力响应及其损伤破坏的研究[D].太原:太原理工大学建筑与土木工程学院,2008:72-85.WANG Rui.Study on the dynamic response and damage failure of concrete filled steel tube under lateral impact[D].Taiyuan:Taiyuan University of Technology.College of Civil and Environmental Engineering,2008:72-85.
[11]瞿海雁,李国强,孙建运,等.侧向冲击作用下圆钢管混凝土构件的数值模拟分析[J].建筑科学与工程学报,2010,27(1):89-96.QU Haiyan,LI Guoqiang,SUN Jianyun,et al.Numerical simulation analysis of circular concrete-filled steel tube specimen under lateral impact[J].Journal of Architecture and Civil Engineering,2010,27(1):89-96.
[12]李文亮.侧向冲击钢管混凝土构件的试验研究和仿真数值分析[D].太原:太原理工大学建筑与土木工程学院,2007:39-50.LI Wenliang.Experiment research and emulation numerical analysis on steel tube-confined concrete under the lateral impact[D].Taiyuan:Taiyuan University of Technology.College of Civil and Environmental Engineering,2007:39-50.
[13]刘威.钢管混凝土局部受压时的工作机理研究[D].福州:福州大学土木建筑工程学院,2005:58-66.LIU Wei,Research on mechanism of concrete-filled tubes subjected to local compression[D].Fuzhou:Fuzhou University.College of Civil Engineering and Architecture,2005:58-66.
[14]GB 50010-2010,混凝土结构设计规范[S].GB 50010-2010,Code for design of concrete structures[S].
[15]雷拓,钱江,刘成清.混凝土损伤塑性模型应用研究[J].结构工程师,2008,24(2):22-27.LEI Tou,QIAN Jiang,LIU Chengqing.Application of damaged plasticity model for concrete[J].Structural Engineers,2008,24(2):22-27.
[16]韩林海.钢管混凝土结构-理论与实践[M].北京:科学出版社,2007:168-184.HAN Linhai.Concrete filled steel tubular structural from theory to practice[M].Beijing:Science Press,2007:168-184.