[1]王超,刘阳,陈海,等.PSJ加固T形RC梁钢板箍有效预应力的计算方法[J].华侨大学学报(自然科学版),2018,39(3):360-364.[doi:10.11830/ISSN.1000-5013.201706090]
　WANG Chao,LIU Yang,CHEN Hai,et al.Calculation Method for Effective Prestress of PSJStrengthening T-Shaped RC Beams[J].Journal of Huaqiao University(Natural Science),2018,39(3):360-364.[doi:10.11830/ISSN.1000-5013.201706090]
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PSJ加固T形RC梁钢板箍有效预应力的计算方法()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第39卷
期数:
2018年第3期
页码:
360-364
栏目:
出版日期:
2018-05-20

文章信息/Info

Title:
Calculation Method for Effective Prestress of PSJStrengthening T-Shaped RC Beams
文章编号:
1000-5013(2018)03-0360-05
作者:
王超1;  刘阳1; 2;  陈海1;  郭子雄1; 2;  陈大烺1
1. 华侨大学 土木工程学院, 福建 厦门 361021;2. 华侨大学 福建省结构工程与防灾重点实验室, 福建 厦门 361021
Author(s):
WANG Chao1;  LIU Yang1; 2;  CHEN Hai1;  GUO Zixiong1; 2;  CHEN Dalang1
1. College of Civil Engineering, Huaqiao University, Xiamen 361021, China; 2. Key Laboratory for Structural Engineering and Disaster Prevention of Fujian Province, Huaqiao University, Xiamen 361021, China
关键词:
预应力钢板箍;  T形梁;  有效预应力;  预应力损失
Keywords:
prestressed steel jacket;  T-shaped beam;  effective prestress;  prestress loss
分类号:
TU375.1
DOI:
10.11830/ISSN.1000-5013.201706090
文献标志码:
A
摘要:
为确定不同加固阶段预应力钢板箍(PSJ)的有效预应力计算方法,对加固过程中和加固之后PSJ的实际应变进行监测.通过对原型试件加固过程的监测,提出螺栓预紧扭矩和PSJ有效应变之间的关系.对10个加固后的PSJ进行200 h的应变监测,研究不同预应力水平下PSJ应变随时间的变化规律.研究结果表明:预应力水平较低时,PSJ有效应力随时间有一定波动,预应力未出现明显衰减;预应力水平较高时,PSJ有效预应力随时间衰减,最大衰减比为35%.
Abstract:
In order to develop the calculation method of the effective prestress of prestressed steel jackets(PSJ), the experiment to monitor the strain of PSJ during and after the strengthening was carried out. The relationship between the prestress torque of the anchor bolt and the effective strain of PSJ was proposed based on the experimental data during the strengthening. The strain of 10 PSJ in 200 hours was also monitored after strengthening, to investigate the relationship between the PSJ strain and time for different prestress levels. It is indicated that: for the low prestress level, the effective stress doesn’t obviously degrade, only fluctuates with the time; for the high prestress level, the effective stress degrades with the time, the maximal degradation ratio is 35%.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2017-06-30
通信作者: 刘阳(1982-),男,副教授,博士,主要从事工程结构抗震减灾研究.E-mail:lyliuyang@hqu.edu.cn.
基金项目: 福建省自然科学基金资助项目(2014J05061, 2015J01208); 福建省高校青年自然科学基金重点项目(JZ160410)
更新日期/Last Update: 2018-05-20