一字型钢管束混凝土剪力墙轴压力学性能有限元分析
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摘要
为研究一字型钢管束混凝土剪力墙的轴压力学性能,采用有限元分析软件建立了9个一字形钢管束混凝土剪力墙模型,研究了钢管束管壁厚度分别为3、6和9 mm时,C30、C40和C50混凝土对此类剪力墙轴压性能的影响,得到了剪力墙的破坏模式、荷载位移曲线及控制点的应力应变关系。结果表明:钢管约束作用下,核心混凝土处于三向受压状态,混凝土的抗压强度明显提高;混凝土强度等级相同时,增加钢管束管壁的厚度,剪力墙轴向受压承载力的提升幅度呈先增加后减小的趋势;剪力墙混凝土强度等级为C30、C40和C50时,钢管束管壁厚度从3 mm到6 mm,其轴向受压承载力增加最为明显;9个模型的核心混凝土紧箍系数均≥1,混凝土呈现出明显的塑性材料性能。
In order to study the axial pressure performance of the in-line steel-tube bundle concrete shear wall,9 finite element models of the one-shaped steel tube bundle concrete shear wall were established by finite element analysis software. The effects of different strength grades of C30,C40 and C50 concrete on the axial compression performance of shear walls, steel pipes confined to thickness of 3,6 and 9 mm were studied. The failure modes,load-displacement curves of shear walls,and stress-strain relationship of the control points were obtained. The results show that with the thickness increase of the steel tube,the axial compression bearing capacity of the shear wall is improved to some extent. Under the constraint of steel tube,the core concrete is in the three-way compression state,and the compressive strength of the concrete is obviously improved. When the concrete strength grade is the same, the axial compressive bearing capacity of shear wall increases first and then decreases with the increase of the thickness of steel tube bundle.When the concrete strength grade of shear wall is C30, C40 and C50, the thickness of steel tube from 3 mm to 6 mm, the axial compressive bearing capacity of steel tube increases most obviously. Because the core concrete hoop coefficients of the nine models are greater than or equal to 1,concrete exhibits significant plastic material properties.
In order to study the axial pressure performance of the in-line steel-tube bundle concrete shear wall,9 finite element models of the one-shaped steel tube bundle concrete shear wall were established by finite element analysis software. The effects of different strength grades of C30,C40 and C50 concrete on the axial compression performance of shear walls, steel pipes confined to thickness of 3,6 and 9 mm were studied. The failure modes,load-displacement curves of shear walls,and stress-strain relationship of the control points were obtained. The results show that with the thickness increase of the steel tube,the axial compression bearing capacity of the shear wall is improved to some extent. Under the constraint of steel tube,the core concrete is in the three-way compression state,and the compressive strength of the concrete is obviously improved. When the concrete strength grade is the same, the axial compressive bearing capacity of shear wall increases first and then decreases with the increase of the thickness of steel tube bundle.When the concrete strength grade of shear wall is C30, C40 and C50, the thickness of steel tube from 3 mm to 6 mm, the axial compressive bearing capacity of steel tube increases most obviously. Because the core concrete hoop coefficients of the nine models are greater than or equal to 1,concrete exhibits significant plastic material properties.
引文
[1]韩林海,杨有福.现代钢管混凝土结构技术[M].北京:中国建筑工业出版社,2017.
[2]任庆新,郭俊峰,贾连光,等.圆钢管混凝土短斜柱力学性能初步分析[J].工业建筑,2011,41(8):110-114.
[3]任庆新,李颀,蒋治国,等.椭圆形钢管混凝土长柱轴压力学性能研究[J].工业建筑,2014,44(4):1-6.
[4]刘界鹏,张素梅,郭兰慧.方钢管约束高强混凝土短柱轴压力学性能[J].哈尔滨工业大学学报,2008,40(10):1542-1545.
[5]张素梅,郭兰慧,叶再利,等.方钢管高强混凝土轴压短柱的试验研究[J].哈尔滨工业大学学报,2004,36(12):1610-1614.
[6]Yang Y L,Yang H,Zhang S M.Compressive behavior of T-shaped concrete filled steel tubular columns[J].International Journal of Steel Structures,2010,10(4):419-430.
[7]Aboutaha R S,Machado R I.Seismic resistance of steel-tubed high-strength reinforced-concrete columns[J].Journal of Structural Engineering,1999,125(5):485-494.
[8]曲秀姝,刘琦,廖维张.矩形钢管混凝土柱压弯力学性能分析[J].广西大学学报(自然科学版),2018,43(3):1149-1160.
[9]Rong B,Chen Z H,Apostolos F,et al.Axial compression behavior and analytical method of L-shaped column composed of concrete-filled square steel tubes[J].Transactions of Tianjin University,2012,18(3):180-187.
[10]杨晓杰,刘晨康,耿强,等.钢管混凝土短柱轴压力学性能分析及其数值模拟[J].科学技术与工程,2017,17(32):233-238.
[11]曹万林,常卫华,宋文勇,等.带暗支撑T形截面短肢剪力墙抗震性能试验研究[J].世界地震工程,2005,21(2):25-30.
[12]黄选明,曹万林,吕西林.不同型式暗支撑短肢剪力墙抗震性能试验研究[J].地震工程与工程振动,2005,25(3):60-66.
[13]张敏,易祺,王竹林,等.T形与L形截面局部设缝短肢剪力墙抗扭性能试验研究[J].结构工程师,2015,31(2):185-193.
[14]畅虎.型钢混凝土短肢剪力墙结构的非线性分析[D].西安:西安建筑科技大学,2012.
[15]冯常琴.型钢混凝土十字形截面短肢剪力墙受力性能研究[D].西安:西安科技大学,2015.
[16]钟善桐.钢管混凝土结构[M].3版.北京:清华大学出版社,2003.
[17]刘向东,管文强,杜国锋.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[J].桂林理工大学学报,2018,38(2):256-262.
[2]任庆新,郭俊峰,贾连光,等.圆钢管混凝土短斜柱力学性能初步分析[J].工业建筑,2011,41(8):110-114.
[3]任庆新,李颀,蒋治国,等.椭圆形钢管混凝土长柱轴压力学性能研究[J].工业建筑,2014,44(4):1-6.
[4]刘界鹏,张素梅,郭兰慧.方钢管约束高强混凝土短柱轴压力学性能[J].哈尔滨工业大学学报,2008,40(10):1542-1545.
[5]张素梅,郭兰慧,叶再利,等.方钢管高强混凝土轴压短柱的试验研究[J].哈尔滨工业大学学报,2004,36(12):1610-1614.
[6]Yang Y L,Yang H,Zhang S M.Compressive behavior of T-shaped concrete filled steel tubular columns[J].International Journal of Steel Structures,2010,10(4):419-430.
[7]Aboutaha R S,Machado R I.Seismic resistance of steel-tubed high-strength reinforced-concrete columns[J].Journal of Structural Engineering,1999,125(5):485-494.
[8]曲秀姝,刘琦,廖维张.矩形钢管混凝土柱压弯力学性能分析[J].广西大学学报(自然科学版),2018,43(3):1149-1160.
[9]Rong B,Chen Z H,Apostolos F,et al.Axial compression behavior and analytical method of L-shaped column composed of concrete-filled square steel tubes[J].Transactions of Tianjin University,2012,18(3):180-187.
[10]杨晓杰,刘晨康,耿强,等.钢管混凝土短柱轴压力学性能分析及其数值模拟[J].科学技术与工程,2017,17(32):233-238.
[11]曹万林,常卫华,宋文勇,等.带暗支撑T形截面短肢剪力墙抗震性能试验研究[J].世界地震工程,2005,21(2):25-30.
[12]黄选明,曹万林,吕西林.不同型式暗支撑短肢剪力墙抗震性能试验研究[J].地震工程与工程振动,2005,25(3):60-66.
[13]张敏,易祺,王竹林,等.T形与L形截面局部设缝短肢剪力墙抗扭性能试验研究[J].结构工程师,2015,31(2):185-193.
[14]畅虎.型钢混凝土短肢剪力墙结构的非线性分析[D].西安:西安建筑科技大学,2012.
[15]冯常琴.型钢混凝土十字形截面短肢剪力墙受力性能研究[D].西安:西安科技大学,2015.
[16]钟善桐.钢管混凝土结构[M].3版.北京:清华大学出版社,2003.
[17]刘向东,管文强,杜国锋.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[J].桂林理工大学学报,2018,38(2):256-262.