钢筋混凝土损伤梁受弯性能的试验及仿真分析
Test and Simulation Analysis of Flexural Behavior of Damaged Reinforced Concrete Beams
任郅祺 1黄巍 1夏登辉 1刘庆涛 1刘沅锟 1孙萌1
作者信息
- 1. 哈尔滨学院,黑龙江 哈尔滨 150040
- 折叠
摘要
为研究钢筋混凝土梁损伤程度对抗弯承载力的影响,采取试验方法对9 片不同设计参数的钢筋混凝土损伤梁进行静载试验,分析了不同损伤程度、设计参数对损伤梁抗弯承载力的影响规律.采用数值分析法对损伤梁静载试验进行了仿真模拟.采用回归法对试验和数值分析结果系统分析,给出了钢筋混凝土梁在不同损伤状态下,纵筋配筋率和混凝土强度对极限承载力的影响规律:纵筋配筋率1.0%时,损伤程度为原梁极限承载力的60%～70%的情况下,损伤梁的极限承载力为原梁的85%～90%之间;损伤程度为梁极限承载力的70%～90%的情况下,损伤梁的极限承载力为原梁的 80%～85%之间.损伤梁的极限承载力随着纵筋配筋率、混凝土强度增加而提高,提高幅度在分别在35%～53%和10%～21%之间.
Abstract
In order to study the influence of the bearing capacity,the test method of the bearing capacity of the bearing beam.The nu-merical analysis method is used to simulate the static load test of the damaged beam,and the regression method is used to systematical-ly analyze the test and numerical analysis results,showing the influence law of the longitudinal reinforcement ratio and the strength of concrete under different damage conditions:When the reinforcement rate of longitudinal reinforcement is 1.0%,the damage degree is 60%～70% of the ultimate bearing capacity of the original beam,and the ultimate bearing capacity of the damaged beam is between 85%～90% of the original beam;If the damage degree is 70%～90% of the ultimate bearing capacity of the beam,the ultimate bear-ing capacity of the damaged beam is 80%～85% of the original beam.The ultimate bearing capacity of the damaged beam increases with the increase of longitudinal reinforcement ratio and concrete strength,and the increase range is 35%～53% and 10%～21% re-spectively.
关键词
钢筋混凝土梁/损伤程度/数值分析/受弯性能Key words
reinforced concrete beam/degree of damage/numerical analysis/flexural performance引用本文复制引用
基金项目
黑龙江省地下工程技术重点实验室项目(2019-03)
黑龙江省大学生创新创业训练计划(202010234060)
出版年
2024
NETL
NSTL
维普
万方数据