冲击荷载下矩形钢管混凝土柱-钢梁节点受力性能数值模拟
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摘要
为研究矩形钢管混凝土柱-钢梁节点在冲击荷载下的力学性能,在总结归纳相关文献的基础上,选取合理的模型尺寸和本构关系,利用有限元软件ABAQUS对落锤冲击荷载下的钢管混凝土柱-钢梁节点受力性能进行数值模拟。通过设置接触对用来考虑钢管壁与混凝土间的粘结滑移效应,采用面面接触方式模拟冲击体与构件之间的接触作用,利用接触应力法对试件的动力响应进行分析,最终获得试件冲击力时程曲线和核心混凝土的应力云图;同时,考虑混凝土损伤塑性对节点核心区应力变化的影响。研究表明:冲击力峰值的计算值与理论值吻合较好,考虑混凝土损伤塑性可以提高数值模拟精度。
Based on the relevant literature on the selection model of reasonable size and constitutive relation,numerical simulation of CFST column and steel beam joint under impact load test is completed by finite element software ABAQUS in order to study the mechanical properties of concrete-filled steel rectangular tubular column and steel beam joint under impact load. By the method of establishing the contact pair between the core concrete and the steel tube,the bond-slip effect is considered. In addition,the contact action is simulated between the impact body and the component via surface-contact method. The dynamic response of the test component under different conditions is discussed by means of contact stress. Accordingly,the time-history curve of impact load and the stress nephogram of core concrete are protracted and the stress changes are compared and analyzed in the joint core area with and without damaged-plasticity. It proves that the numerical simulation of impact force peak agrees well with theoretical calculation and the accuracy of numerical simulation in CFST structure can be improved with concrete damaged-plasticity.
Based on the relevant literature on the selection model of reasonable size and constitutive relation,numerical simulation of CFST column and steel beam joint under impact load test is completed by finite element software ABAQUS in order to study the mechanical properties of concrete-filled steel rectangular tubular column and steel beam joint under impact load. By the method of establishing the contact pair between the core concrete and the steel tube,the bond-slip effect is considered. In addition,the contact action is simulated between the impact body and the component via surface-contact method. The dynamic response of the test component under different conditions is discussed by means of contact stress. Accordingly,the time-history curve of impact load and the stress nephogram of core concrete are protracted and the stress changes are compared and analyzed in the joint core area with and without damaged-plasticity. It proves that the numerical simulation of impact force peak agrees well with theoretical calculation and the accuracy of numerical simulation in CFST structure can be improved with concrete damaged-plasticity.
引文
[1]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.
[2]秦颖.矩形钢管混凝土柱梁节点力学性能及试验研究[D].天津:天津大学,2014.
[3]刘永健.矩形钢管混凝土桁架节点极限承载力试验与设计方法研究[D].长沙:湖南大学,2003.
[4]金刚,丁浩洁,陈建斌.矩形钢管混凝土柱-钢梁节点抗震性能试验研究与分析[J].建筑结构,2007,37(2):88-93.
[5]Lubliner J,Oliver J,Oller S,et al.A plastic-damage model for concrete[J].International Journal of Solids and Structures,1989,25(3):299-326.
[6]Lee J,Fenves G L.Plastic-damage model for cyclic loading of concrete structures[J].Journal of Engineering Mechanics,1998,124(8):892-900.
[7]Lee J,Fenves G L.A plastic-damage concrete damage model for earthquake analysis of dams[J].Earthquake Engineering and Structural Dynamics,1998,27(9):937-956.
[8]韩林海.钢管混凝土结构——理论与实践[M].2版.北京:科学出版社,2007:226-251.
[9]尧国皇,黄用军,宋宝东,等.采用塑性损伤模型分析钢-混凝土组合构件的静力性能[J].建筑钢结构进展,2009,11(3):12-18.
[10]Abdullah J A,Zhang S M,Liu J P.Shear strength and behavior of tubed reinforced and steel reinforced concrete(TRC and TSRC)short columns[J].Thin-Walled Structures,2010,48(3):191-199.
[11]Liu J P,Abdullah J A,Zhang S M.Hysteretic behavior and design of square tubed reinforced and steel reinforced concrete(STRC and/or STSRC)short columns[J].Thin-Walled Structures,2011,49(7):874-888.
[12]杜国锋,徐礼华,徐浩然,等.钢管混凝土组合T形短柱轴压力学性能研究[J].西安建筑科技大学学报,2008,40(4):549-555.
[13]李安.考虑约束作用及率相关的混凝土单轴塑性损伤本构模型[D].哈尔滨:哈尔滨工业大学,2012.
[14]李帼昌,闫海龙,陈博文.高强方钢管高强混凝土轴压短柱力学性能的有限元分析[J].沈阳建筑大学学报(自然科学版),2015,31(5):847-855.
[15]李召,别雪梦,刘向东,等.轴向冲击荷载作用下T形截面钢管混凝土短柱力学性能模拟[J].桂林理工大学学报,2016,36(3):500-506.
[16]别雪梦,李召,管文强,等.带楼板的外加强环式方钢管混凝土柱节点非线性数值模拟[J].工业建筑,2016,46(10):143-157.
[17]聂建国,秦凯,肖岩.方钢管混凝土柱节点的试验研究及非线性有限元分析[J].工程力学,2006,23(11):99-109,115.
[18]韩林海.钢管混凝土结构[M].北京:科学出版社,2000.
[19]Matsui C,Tsuda K,Ishibashi Y.Slender concrete filled steel tubular columns under combined compression and bending[C]//PSSC95,4th Pacific Structural Steel Conference,Steel-concrete composite structures,1995:29-36.
[20]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,2005.
[21]Schneider S P.Axially loaded concrete-filled steel tubes[J].Journal of Structural Engineering,1998,124(10):1125-1138.
[22]刘亚玲.常见约束类型的钢管混凝土构件侧向冲击响应试验研究与数值分析[D].太原:太原理工大学,2005.
[23]王蕊.钢管混凝土结构构件在侧向撞击下动力响应及其损伤破坏的研究[D].太原:太原理工大学,2008.
[24]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,2012.
[2]秦颖.矩形钢管混凝土柱梁节点力学性能及试验研究[D].天津:天津大学,2014.
[3]刘永健.矩形钢管混凝土桁架节点极限承载力试验与设计方法研究[D].长沙:湖南大学,2003.
[4]金刚,丁浩洁,陈建斌.矩形钢管混凝土柱-钢梁节点抗震性能试验研究与分析[J].建筑结构,2007,37(2):88-93.
[5]Lubliner J,Oliver J,Oller S,et al.A plastic-damage model for concrete[J].International Journal of Solids and Structures,1989,25(3):299-326.
[6]Lee J,Fenves G L.Plastic-damage model for cyclic loading of concrete structures[J].Journal of Engineering Mechanics,1998,124(8):892-900.
[7]Lee J,Fenves G L.A plastic-damage concrete damage model for earthquake analysis of dams[J].Earthquake Engineering and Structural Dynamics,1998,27(9):937-956.
[8]韩林海.钢管混凝土结构——理论与实践[M].2版.北京:科学出版社,2007:226-251.
[9]尧国皇,黄用军,宋宝东,等.采用塑性损伤模型分析钢-混凝土组合构件的静力性能[J].建筑钢结构进展,2009,11(3):12-18.
[10]Abdullah J A,Zhang S M,Liu J P.Shear strength and behavior of tubed reinforced and steel reinforced concrete(TRC and TSRC)short columns[J].Thin-Walled Structures,2010,48(3):191-199.
[11]Liu J P,Abdullah J A,Zhang S M.Hysteretic behavior and design of square tubed reinforced and steel reinforced concrete(STRC and/or STSRC)short columns[J].Thin-Walled Structures,2011,49(7):874-888.
[12]杜国锋,徐礼华,徐浩然,等.钢管混凝土组合T形短柱轴压力学性能研究[J].西安建筑科技大学学报,2008,40(4):549-555.
[13]李安.考虑约束作用及率相关的混凝土单轴塑性损伤本构模型[D].哈尔滨:哈尔滨工业大学,2012.
[14]李帼昌,闫海龙,陈博文.高强方钢管高强混凝土轴压短柱力学性能的有限元分析[J].沈阳建筑大学学报(自然科学版),2015,31(5):847-855.
[15]李召,别雪梦,刘向东,等.轴向冲击荷载作用下T形截面钢管混凝土短柱力学性能模拟[J].桂林理工大学学报,2016,36(3):500-506.
[16]别雪梦,李召,管文强,等.带楼板的外加强环式方钢管混凝土柱节点非线性数值模拟[J].工业建筑,2016,46(10):143-157.
[17]聂建国,秦凯,肖岩.方钢管混凝土柱节点的试验研究及非线性有限元分析[J].工程力学,2006,23(11):99-109,115.
[18]韩林海.钢管混凝土结构[M].北京:科学出版社,2000.
[19]Matsui C,Tsuda K,Ishibashi Y.Slender concrete filled steel tubular columns under combined compression and bending[C]//PSSC95,4th Pacific Structural Steel Conference,Steel-concrete composite structures,1995:29-36.
[20]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,2005.
[21]Schneider S P.Axially loaded concrete-filled steel tubes[J].Journal of Structural Engineering,1998,124(10):1125-1138.
[22]刘亚玲.常见约束类型的钢管混凝土构件侧向冲击响应试验研究与数值分析[D].太原:太原理工大学,2005.
[23]王蕊.钢管混凝土结构构件在侧向撞击下动力响应及其损伤破坏的研究[D].太原:太原理工大学,2008.
[24]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,2012.