RC梁承载力试验及数值分析研究
Experimental Study and Numerical Analysis of the Bearing Capacity of Reinforced Concrete Beams
李雨峰 1卢荣鑫1
作者信息
- 1. 重庆三峡学院土木工程学院,重庆 404120
- 折叠
摘要
[目的]通过对RC梁进行四点受弯分级加载试验,研究受弯破坏对RC梁承载力的影响规律,并基于有限元分析软件建立数值模型以验证试验结果.同时,运用规范公式计算与上述值进行比较分析.[方法]通过包括试验测试、数值模拟和规范公式计算等三种方法研究RC梁的承载能力.[结果]研究结果表明,所建立的模型能够较好地预测RC梁的承载力,这为准确评估RC梁的安全性能提供了有力支撑.[结论]钢筋混凝土梁在弯曲破坏形态下的破坏试验法虽然真实准确,但不宜在实际工程中应用,而有限元分析法可以高精度、快速、低成本地模拟全过程,且与试验吻合较好.规范计算则偏于理想化,因此需要根据具体对象选取适当的方法.
Abstract
[Purposes]The purpose of this study is to investigate the influence of flexural failure on the bearing capacity of reinforced concrete(RC)beams through four-point bending graded loading tests,and to establish a numerical model using finite element analysis software to verify the experimental results.In addition,the study compares and analyzes the results with those obtained from formula calculations.[Methods]The bearing capacity of RC beams is studied by three methods:experimental testing,numeri-cal simulation,and formula calculation.[Findings]The results show that the established model can pre-dict the bearing capacity of RC beams well,which provides strong support for accurately evaluating the safety performance of RC beams.[Conclusions]Although the flexural failure test method of reinforced concrete beams is accurate and realistic,it is not suitable for practical engineering applications.The fi-nite element analysis method,however can simulate the whole process with high precision,fast speed,and low cost,and has good agreement with experiments.The formula calculation tends to be idealized,so appropriate methods need to be selected based on specific objects.
关键词
有限元模拟/钢筋混凝土梁/四点受弯/力学承载力Key words
finite element simulation/reinforced concrete beam/four-point bending/mechanical bearing capacity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据