摘要
笔者提出了一种基于混凝土抗拉性能随机性的钢筋混凝土梁裂缝开展模拟方法。通过定义一个服从正态分布的极限拉应变数组,在循环加载过程中提取单元实际应变并与定义的数组进行对比来判断单元是否开裂。采用ANSYS软件构建试验梁的仿真分析,将模拟得到的开裂荷载与荷载-挠度曲线分别与计算值和试验结果对比,验证该方法的可行性后,对比模拟得到的裂缝深度与试验结果。结果表明:该方法对钢筋混凝土梁裂缝开展模拟效果良好,且对裂缝深度具有良好的辨识度,可以为人们研究裂缝深度提供一定参考。
A simulation method for crack development of reinforced concrete beams based on the randomness of concrete tensile properties is proposed.By defining an array of ultimate tensile strains subject to normal distribution,the actual strain of the unit is extracted during cyclic loading and compared with the defined array to determine whether the unit is cracked or not.The ANSYS software is used to build the simulation analysis of the test beam.The crack load and load-deflection curves obtained by simulation are compared with the calculated value and the test results respectively.After verifying the feasibility of the method,the crack depth obtained by simulation and the test results are compared.The results show that this method has a good simulation effect on the cracks of reinforced concrete beams,and has a good identification of the crack depth,which can provide some reference for people to study the crack depth.
作者
李新宇
陈嘉俊
万顺路
LI Xinyu;CHEN Jiajun;WAN Shunlu(College of Civil Engineering and Architecture,Guangxi University,Nanning,Guangxi,530004;Guangxi Hualan Engineering Management Co.,Ltd.,Nanning,Guangxi,530011)
出处
《红水河》
2020年第6期91-94,共4页
Hongshui River
关键词
裂缝开展
拉应变
随机性
钢筋混凝土梁
模拟
crack development
tensile strain
randomness
reinforced concrete beam
simulation
