基于ABAQUS的钢筋混凝土柱拟静力试验非线性分析  

Quasic-static Nonlinear Test Analysis of Reinforced Concrete Columns Based on ABAQUS

作　　者：曹晓罗 CAO Xiao-luo(Department of Architecture and Civil Engineering,Shazhou Professional Institute of Technology,Zhangjiagang 215600,China)

机构地区：[1]沙洲职业工学院建筑工程系,江苏张家港215600

出　　处：《混凝土与水泥制品》2023年第1期60-65,共6页China Concrete and Cement Products

基　　金：沙洲职业工学院青年教师科研基金项目(SGJJ2021B03)。

摘　　要：为了研究ABAQUS在钢筋混凝土结构拟静力试验数值分析中的适用性,选取了美国太平洋地震工程研究中心结构性能数据库中的一根矩形截面钢筋混凝土柱(RC柱)的拟静力试验数据,在ABAQUS中分别采用实体单元和纤维梁单元两种方式对其在低周往复荷载下的抗震性能进行了数值模拟,并与试验结果进行了对比。结果表明:剪跨比不仅影响了RC柱的最终破坏形态,还会影响其抗侧刚度,且剪跨比越大,抗侧刚度越小;轴压比的增大会导致骨架曲线出现下降段,使RC柱的延性降低;混凝土强度对滞回曲线影响较小,纵筋配筋率的增大可有效提高RC柱的水平抗侧力。In order to study the applicability of ABAQUS in the numerical analysis of quasic-static test of reinforced concrete structure,the quasic-static test data of a rectangular reinforced concrete column(RC column)in the structural performance database of the Pacific Earthquake Engineering Research Center in the United States was selected,and the seismic performance of the column under low cyclic reciprocating loads was numerically simulated in ABAQUS by using solid element and fiber beam element respectively,and compared with the test results.The results show that the shear span ratio affects the ultimate failure mode of RC columns,and the greater the shear span ratio,the smaller the lateral stiffness.The increase of axial compression ratio will lead to the decrease of the skeleton curve,which will reduce the ductility of RC columns.The concrete strength has little effect on the hysteretic curve,and the increase of longitudinal reinforcement ratio can effectively improve the horizontal lateral bearing capacity of RC columns.

关 键 词：ABAQUS 混凝土损伤塑性模型 损伤因子 拟静力试验 滞回曲线 

分 类 号：TU375.2[建筑科学—结构工程]