[1]王磊,张鑫,钟立恒,等.锈蚀钢筋混凝土梁的力学性能及拱效应分析[J].华侨大学学报(自然科学版),2017,38(1):24-30.[doi:10.11830/ISSN.1000-5013.201701005]
　WANG Lei,ZHANG Xin,ZHONG Liheng,et al.Analysis of Mechanical Properties and Arch Effect of Corroded Reinforced Concrete Beams[J].Journal of Huaqiao University(Natural Science),2017,38(1):24-30.[doi:10.11830/ISSN.1000-5013.201701005]
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锈蚀钢筋混凝土梁的力学性能及拱效应分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第38卷
期数:
2017年第1期
页码:
24-30
栏目:
出版日期:
2017-01-09

文章信息/Info

Title:
Analysis of Mechanical Properties and Arch Effect of Corroded Reinforced Concrete Beams
文章编号:
1000-5013(2017)01-0024-07
作者:
王磊1; 2;  张鑫2;  钟立恒2;  毛亚东2
1. 广西建筑新能源与节能重点实验室, 广西 桂林 541004;2. 桂林理工大学 土木与建筑工程学院, 广西 桂林 541004
Author(s):
WANG Lei1; 2;  ZHANG Xin2;  ZHONG Liheng2;  MAO Yadong2
1. Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin 541004, China; 2. College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004, China
关键词:
拱效应;  钢筋混凝土;  粘结性能;  锈蚀率
Keywords:
arch effect;  reinforced concrete;  bond performance;  corrosion ratio
分类号:
TU375.1
DOI:
10.11830/ISSN.1000-5013.201701005
文献标志码:
A
摘要:
对锈蚀率为0%,3%,6%,9%,12%,15%,18%的钢筋混凝土梁进行力学试验,分析试验梁的挠度、钢筋应变等指标随荷载及锈蚀率的变化规律,揭示不同锈蚀率钢筋混凝土梁受荷过程钢筋应力传递规律,以及荷载等级、钢筋锈蚀率与锈蚀钢筋混凝土梁的拱效应关系.结果表明:钢筋锈蚀会引起钢筋与混凝土间粘结性能退化,钢筋应力呈现由跨中向两端传递的趋势,锈蚀梁承载机理趋于拱效应,锈蚀钢筋混凝土梁的拱效应随着荷载等级与钢筋锈蚀率的增加而增强.
Abstract:
Based on the mechanical test of the reinforced concrete(RC)beams with different corrosion ratios of the reinforcement, including 0%, 3%, 6%, 9%, 12%, 15% and 18%, the indexes of the deflection and the steel strain of the test beams were analyzed with the various loads and corrosion ratios, to investigate the reinforcement stress of the test beams with different corrosion ratio during the load process, and the relationship among the arch effect of corroded reinforced concrete beams, the load grade and reinforced corrosion ratio. The results show that the reinforcement corrosion degrades the bond performance between steel and concrete; the stress of steel bar transfers from the mid-span to the beam end. In addition, the load-bearing mechanism of corroded beam tends to arch effect; the arch effect of corroded reinforced concrete beam enhances with the increase of the load level and the steel bar corrosion ratio.

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备注/Memo

备注/Memo:
收稿日期: 2016-05-10
通信作者: 王磊(1977-),男,教授,博士,主要从事混凝土结构耐久性的研究.E-mail:tianmu77@163.com.
基金项目: 国家自然科学基金资助项目(51268009); 广西矿冶与环境科学实验室中心项目(KH2011ZD007)
更新日期/Last Update: 2017-01-20