外肋板式钢板混凝土组合剪力墙与钢梁节点的受力性能数值模拟
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摘要
以钢板混凝土组合剪力墙-钢连梁外肋板节点为研究对象,利用ABAQUS建立三重非线性有限元模型,考虑了不同外肋板高厚比、连接板宽厚比和外包钢板厚度对其抗震性能的影响。结果表明:外肋板墙梁节点滞回曲线有一定的捏缩现象,延性及耗能能力均满足抗震要求;外肋板高厚比由9. 375降至5. 357,节点模型的延性系数、能量耗散系数和初始刚度变化均不足8%;在连接板宽度为150 mm时,较大宽厚比的模型延性较好;外包钢板厚度由10 mm变化到4 mm时,节点峰值荷载降低约16%,但模型刚度退化变缓、延性性能提高。
Taking external rib plate connection between steel plate-concrete composite shear and steel coupling beam as the research object,finite element analysis models were proposed by ABAQUS. The influence of height-thickness ratio of external rib plate,width to thickness ratio of connecting plate and outsourcing steel sheet thickness on the seismic performance of the models were discussed. The research shows that: the hysteresis curve of joint has some pinch phenomenon,the ductility and energy dissipation capacity meet the seismic requirement. Height-thickness ratio of external rib plate drops from 9. 375 to5. 357,the changes of ductility,energy dissipation coefficient and initial stiffness are less than 8%. At a width of 150 mm of connecting plate,a high width to thickness ratio has a better ductility. With the variation of outsourcing steel sheet thickness from 10 mm to 4 mm,the peak load decreases by 16%,but stiffness degradation becomes slow and displacement ductility increases.
Taking external rib plate connection between steel plate-concrete composite shear and steel coupling beam as the research object,finite element analysis models were proposed by ABAQUS. The influence of height-thickness ratio of external rib plate,width to thickness ratio of connecting plate and outsourcing steel sheet thickness on the seismic performance of the models were discussed. The research shows that: the hysteresis curve of joint has some pinch phenomenon,the ductility and energy dissipation capacity meet the seismic requirement. Height-thickness ratio of external rib plate drops from 9. 375 to5. 357,the changes of ductility,energy dissipation coefficient and initial stiffness are less than 8%. At a width of 150 mm of connecting plate,a high width to thickness ratio has a better ductility. With the variation of outsourcing steel sheet thickness from 10 mm to 4 mm,the peak load decreases by 16%,but stiffness degradation becomes slow and displacement ductility increases.
引文
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[9]张继承,周灵姣,吕行,等. T形钢管混凝土柱-钢梁平面框架抗震性能研究[J].建筑结构学报,2017,38(3):76-83.
[2]李杰.钢管束组合结构剪力墙与钢梁节点抗震性能研究[D].天津:天津大学,2016.
[3]陈建伟,闫文赏,苏幼坡,等.装配式钢管混凝土组合剪力墙抗震性能试验研究[J].建筑结构学报,2015,36(增刊1):176-184.
[4]韩林海.钢管混凝土结构:理论与实践[M].北京:科学出版社,2007.
[5]李砚波,曹晟.钢管束混凝土组合墙-梁翼缘加强型节点震性能试验[J].天津大学学报(自然科学与工程技术版),2016,49(增刊1):41-47.
[6] Qin Y,Chen Z,Wang X. Seismic behavior of through-diaphragm connection between CFRT column and steel beam experimental study[J].Advanced Steel Construction,2014,10(3):351-371.
[7] GB 50011-2010,建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[8]徐礼华,童敏.方钢管混凝土柱-钢梁双侧板贯穿式节点抗震性能试验研究[J].土木工程学报,2012,45(3):49-57.
[9]张继承,周灵姣,吕行,等. T形钢管混凝土柱-钢梁平面框架抗震性能研究[J].建筑结构学报,2017,38(3):76-83.