不同混凝土模型对CFRP加固钢筋混凝土抗冲击性能的数值评估  

Numerical assessment of the impact behavior of CFRP strengthened RC beams using different concrete models

作　　者：王剑楠 张锋 Wang Jiannan;Zhang Feng(Xi’an Yunfan Municipal Engineering and Consulting Co.,Ltd.,Xi’an 710100,China;Shaanxi Tongyu Research Institute of Highway Co.,Ltd.,Xi’an 710100,China)

机构地区：[1]西安云帆市政工程咨询有限公司,西安710100 [2]陕西通宇公路研究所有限公司,西安710100

出　　处：《青海交通科技》2022年第2期144-150,共7页Qinghai Transportation Science and Technology

摘　　要：本文利用有限元方法分析了碳纤维增强聚合物(CFRP)板材加固钢筋混凝土(RC)梁的冲击性能,利用ABAQUS建立了弹塑性分析有限元模型,为了更精确地分析钢筋混凝土梁在冲击荷载作用下的结构响应,模型中采用不同的材料本构关系来模拟混凝土的非线性行为,主要包括Drucker-Prager模型、塑性损伤模型和Cap/plasticity模型,有限元计算结果与所选取的文献试验结果吻合程度较好。结果表明,混凝土塑性损伤模型比其他模型更接近试验结果。In the current paper,a numerical study was carried out using the finite element(FE)approach in order to simulate the impact behavior of reinforced concrete(RC)beams strengthened using carbon fiber reinforced polymer(CFRP)sheets attached to the tensile face of the RC beam.A three-dimensional finite element model was constructed and carried out using ABAQUS/Explicit software.Different material models were employed to simulate the nonlinear behavior of concrete to better understand the response of reinforced concrete structures subjected to impact loads.The examined concrete models were;Drucker-Prager,concrete damage plasticity,and Cap/Plasticity.The FEA results were in good agreement with the selected literature test data.Moreover,results showed that the concrete damage plasticity model exhibited more realistic results,that were asymptotic to experimental results,than other models.

关 键 词：钢筋混凝土梁 混凝土本构模型 碳纤维增强聚合物 冲击荷载 有限元分析 

分 类 号：TU375.1[建筑科学—结构工程]