基于近场动力学方法的钢筋混凝土构件破坏分析  

Damage analysis of reinforced concrete elements based on the peridynamic method

作　　者：谭健新 宁晓骏[1] 侯庆 施明君 TAN Jianxin;NING Xiaojun;HOU Qing;SHI Mingjun(School of Architectural Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《四川建筑科学研究》2025年第2期33-40,共8页Sichuan Building Science

摘　　要：利用近场动力学单键双参数(uni-bond dual-parameter peridynamic,UDPD)方法对准静态下钢筋混凝土构件的破坏过程进行了模拟,考虑了物质点之间长程力的作用,修正了核函数。采用适用于混凝土等准脆性材料的损伤模型,通过弱化钢筋与混凝土之间的键,模拟了二者界面的黏结滑移效应,建立了在不同剪跨比下钢筋混凝土梁的近场动力学(peridynamics,PD)模型。结果表明,裂纹扩展的路径和形式与试验结果相吻合。The failure process of reinforced concrete elements under quasi-static conditions was simulated by using the UDPD method.The interaction of long-range forces between material points was taken into account and the kernel function was corrected.A damage model suitable for quasi-brittle materials such as concrete was adopted.By weakening the bonds between steel bars and concrete,the adhesive slip effects at their interface were simulated.A PD model of reinforced concrete beams at different shear-span ratios was established.The results show that the path and form of crack propagation match experimental results.

关 键 词：钢筋混凝土 近场动力学 裂纹扩展 数值模拟 

分 类 号：TU375[建筑科学—结构工程]