圆多腔体中空钢管混凝土柱抗震性能分析  

Seismic Performance Analysis of Rircular Multi-cavity Hollow Concrete-filled Steel Tubular Columns

作　　者：马江萍[1] 李力怡[1] 杨燕 MA Jiangping;LI Liyi;YANG Yan(Xi’an Peihua University,School of Architecture and Art Design,Xi’an 710125,China)

机构地区：[1]西安培华学院建筑与艺术设计学院,陕西西安710125

出　　处：《粉煤灰综合利用》2023年第3期1-9,共9页Fly Ash Comprehensive Utilization

基　　金：陕西省“十四五”教育科学规划2022年度课题(SGH22Y1849)。

摘　　要：为研究圆多腔体中空钢管混凝土柱的抗震性能,首先对圆实心分腔复式钢管混凝土柱试件的试验结果与有限元结果进行比对,确定了有限元模拟方法有效后,再利用ABAQUS建立了以轴压比(0.2~0.6)、剪跨比(3~5)、截面形式(圆多腔体中空截面与圆多腔体实心截面)为基本参数的12根柱模型,对其进行了低周往复加载,对比分析了剪跨比、轴压比、截面形式对模型滞回曲线、骨架曲线、延性系数、刚度退化以及耗能能力的影响规律。结果表明:剪跨比较小的模型,随轴压比的增大延性系数与耗能能力增幅明显,但轴压比对刚度退化的影响不明显;剪跨比较大的模型,在轴压比也较大时极限承载力、延性与耗能能力有显著衰减的趋势,刚度退化也对轴压比较为敏感;在轴压比较小时,圆多腔体中空钢管混凝土柱与圆实心分腔复式钢管混凝土柱相比耗能能力差异不大,但随轴压比增大,圆多腔体中空钢管混凝土柱滞回耗能有显著提高。In order to study the seismic performance of the circular multi-cavity hollow concrete-filled steel tubular column,the test results of the circular solid sub-cavity composite concrete-filled steel tubular column were compared with the finite element results,and it was determined that the finite element simulation method was effective.The 12-column model with axial compression ratio(0.2~0.6),shear-span ratio(3~5),and section form(round multi-cavity hollow section and circular multi-cavity solid section)as the basic parameters,was analyzed for low The influence of shear-span ratio,axial compression ratio,and section form on the model hysteresis curve,skeleton curve,ductility coefficient,stiffness degradation and energy dissipation capacity was compared and analyzed by reciprocating loading.The results show that the ductility coefficient and energy dissipation capacity increase significantly with the increase of the axial compression ratio for the model with a small shear span ratio,but the effect of the axial compression ratio on the stiffness degradation is not obvious;for the model with a large shear span ratio,the axial compression ratio also increases.When it is larger,the ultimate bearing capacity,ductility and energy dissipation capacity have a tendency to decrease significantly,and the stiffness degradation is also sensitive to the axial pressure;when the axial pressure is relatively small,the circular multi-cavity hollow concrete-filled steel tubular column and the circular solid sub-cavity compound concrete-filled steel tubular Compared with the column,the difference in energy dissipation capacity is not significant,but with the increase of the axial compression ratio,the hysteretic energy dissipation of the circular multi-cavity hollow concrete-filled steel tubular column increases significantly.

关 键 词：圆多腔体中空钢管 剪跨比 轴压比 有限元分析 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程]