CGMM加固损伤钢筋混凝土圆柱恢复力模型的研究  

Study of restoring force model for damaged reinforced concrete cylinder strengthened by CGMM

作　　者：陈建兵[1] 徐聪 Chen Jianbing;Xu Cong(School of Civil Engineering,Suzhou University of Science and Technology,215011,Suzhou,China)

机构地区：[1]苏州科技大学土木工程学院,苏州215011

出　　处：《应用力学学报》2021年第5期1815-1823,共9页Chinese Journal of Applied Mechanics

基　　金：苏州市市级建设科研项目(SZ2018-6);苏州科技大学科研创新计划项目(SKCX17-022)。

摘　　要：在试验的基础上,运用ABAQUS有限元软件建立各试件的计算模型,对比、分析、试验并模拟计算结果,确保模型建立的准确性;以轴压比、水泥基灌浆料强度、加固层厚度、加固高度、钢丝网孔径大小、钢丝网层数为影响参数,研究了各参数下试件抗震性能的变化规律;借鉴恢复力模型特征参数的取值方法及滞回模型的建立规律,求得特征值回归系数和CGMM加固方式的恢复力模型,并与试件的试验结果进行比较,确保恢复力模型的合理性。研究结果表明:以轴压比、水泥基灌浆料强度、加固高度、钢丝网层数为参数建立的恢复力模型精度较高,能够较好地模拟和反映试件的实际抗震性能。On the basis of the test, the finite element models of the specimens are established by using ABAQUS finite element software, and the results of the test and simulation are compared and analyzed to ensure the accuracy of the model. With the influence parameters of axial compression ratio, strength of cement grouting material, thickness of reinforcing layer, reinforcing height, diameter of wire mesh and number of layers of wire mesh, the variation law of seismic performance of specimens under various parameters was studied. The regression coefficient of eigenvalue and the restoring force model of CGMM reinforcement are obtained by referring to the method of choosing characteristic parameters of restoring force model and the law of establishing hysteretic model. The results are compared with the test results of specimens to ensure the rationality of restoring force model. The results show that the restoring force model based on the parameters of axial compression ratio, strength of cement-based grouting material, reinforcement height and steel mesh layers has high accuracy, and can simulate and reflect the actual seismic performance of the specimens.

关 键 词：水泥基灌浆料及钢丝网 ABAQUS有限元 影响参数 恢复力模型 计算方法 

分 类 号：TU375.3[建筑科学—结构工程] TU376