基于ANSYS的钢筋混凝土浅梁单调加载变形的数值模拟

李文华; 赵彦革; 张吉; 潘宁; 杜文博; 方伟

2010, 2(3): 83-90.

基于ANSYS的钢筋混凝土浅梁单调加载变形的数值模拟

李文华 ^1,, 赵彦革 ^2,, 张吉 ^2,, 潘宁 ^2,, 杜文博 ^2,, 方伟 ^2,

1.	山东莱钢建设有限公司，青岛 266071
2.	中国建筑科学研究院，北京 100013

网络出版日期: 2010-09-01

作者简介: 李文华(1983-)，男，硕士，工程师。目前从事建筑结构设计工作。E-mail：lwhchina520@126.com

Numerical Simulation for Monotonic Loaded-displacement of RC Shallow Beam Using ANSYS

Li Wenhua ^1,, Zhao Yange ^2,, Zhang Ji ^2,, Pan Ning ^2,, Du Wenbo ^2,, Fang Wei ^2,

1.	Shandong Laigang Construction Co., Ldt., Qingdao 266071, China
2.	China Academy of building research, Beijing 100013, China

Available Online: 2010-09-01

引用本文: 李文华, 赵彦革, 张吉, 潘宁, 杜文博, 方伟. 基于ANSYS的钢筋混凝土浅梁单调加载变形的数值模拟[J]. 土木建筑工程信息技术, 2010, 2(3): 83-90.

Citation: Li Wenhua, Zhao Yange, Zhang Ji, Pan Ning, Du Wenbo, Fang Wei. Numerical Simulation for Monotonic Loaded-displacement of RC Shallow Beam Using ANSYS[J]. Journal of Information Technologyin Civil Engineering and Architecture, 2010, 2(3): 83-90.

摘要:本文对当前钢筋混凝土梁的有限元模拟进行了概述，以Bresler等人所做试验中两根分别以剪压与弯曲形式破坏的浅梁为研究对象，采用不同的有限元模型及本构模型对其进行了加载过程数值模拟。将数值分析结果与试验结果进行了对比分析，给出差异产生的可能原因，并指出可优选的有限元模型与本构模型；提出梁的极限荷载应结合压区混凝土应变与拉区纵筋拉应力取定，而不能简单取为非线性求解不收敛时施加的荷载值；以单因素分析的方法对影响求解的主要参数的敏感性进行研究。所得结论将有助于推进钢筋混凝土梁数值模拟时参数设置的标准化。

关键词: ANSYS, 浅梁, 加载-变形, 数值模拟, 标准化

Abstract: In this paper, the current numerical simulation method for RC shallow beams is summarized. Using different FE model and constitutive model, two RC beams from experiment conducted and documented by Bresler et. are analyzed. By comparing analysis and experiment results, the best combination of FE model and constitutive model used for numerical simulation is pointed out; explanation for differences between analysis and experiment results has been given out. Furthermore, the study shows that ultimate bearing capacity of beams should not be simply determined as the imposed load when the solution is not converged but be related to strain of concrete in compression region and stress of reinforcement in thensile region. At last, the sensitivity of some parameters is studied by single factor method. All the conclusions from this paper will promote the standardization of numerical simulation of RC beams.

Key words: ANSYS, Shallow Beam, Load-displacement, Numerical Simulation, Standardization

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基于ANSYS的钢筋混凝土浅梁单调加载变形的数值模拟

Numerical Simulation for Monotonic Loaded-displacement of RC Shallow Beam Using ANSYS

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