[1]李晓琴,陈建飞,陆勇,等.基于局部损伤混凝土模型的FRP-混凝土界面有限元分析研究[J].西安建筑科技大学学报:自然科学版,2015,47(01):62-65.[doi:10.15986/j.1006-7930.2015.01.012]
　LI Xiaoqin,CHEN Jianfei,LU Yong,et al.Numerical analysis of FRP-concrete bond behaviour based on a local concrete damage model[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(01):62-65.[doi:10.15986/j.1006-7930.2015.01.012]
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基于局部损伤混凝土模型的FRP-混凝土界面有限元分析研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年01期
页码:
62-65
栏目:
出版日期:
2015-02-28

文章信息/Info

Title:
Numerical analysis of FRP-concrete bond behaviour based on a local concrete damage model
文章编号:
1006-7930(2015)01-0062-04
作者:
李晓琴;陈建飞;陆勇;杨贞军;许清风;
昆明理工大学建筑工程学院土木系;温州大学建筑工程学院;贝尔法斯特女王大学建筑与土木规划学院;爱丁堡大学工程学院基础设施和环境研究所;浙江大学建筑工程学院;上海市建筑科学研究院;
Author(s):
LI Xiaoqin1;  CHEN Jianfei 2;  3;  LU Yong 4;  YANG Zhenjun 5;  XU Qingfeng 6
1. Faculty of Civil Engineering Kunming University of Science and Technology, Kunming 650000, China; 2.College of Civil Engineering and Architecture, Wenzhou University 325035, China; 3.School of Planning, Architecture and Civil Engineering, Queen’s University Belfast, Belfast, UK, BT9 5AG; 4. Institute for Infrastructure and Environment, School of Engineering, University of Edinburgh, UK,EH9 3JL;5. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; 6. Shanghai Research Institute of Building Sciences, Shanghai 200032, China
关键词:
局部损伤模型; RP-混凝土搭接接头; 动力增强因子(DIF); 加载速率; 动态粘结滑移
Keywords:
local concrete damage model;  FRP-concrete bonded joints;  dynamic increasing factor (DIF);  loading rates;  dynamic bond-slip
分类号:
TU352
DOI:
10.15986/j.1006-7930.2015.01.012
文献标志码:
A
摘要:
基于局部损伤混凝土模型建立了FRP-混凝土搭接接头的精细有限元模型,对其界面在准静态荷载和动力荷载下的粘结性能进行了研究.将准静态有限元模拟结果与FRP-混凝土搭接接头单剪试验数据进行了比较,同时完成了该局部损伤混凝土模型的各参数分析,详细讨论了混凝土断裂带宽度和断裂能等因素对有限元计算的影响.该模型计算得到的准静态荷载-滑移及应变分布曲线均接近试验结果,且通过数值分析还能详细展示FRP-混凝土界面的损伤、传递及破坏过程,预测构件的静态承载能力和FRP-混凝土粘结滑移行为.在此准静态精细有限元模型基础上引入与应变率相关的混凝土动力增强因子(dynamic increasing factor,D...
Abstract:
A meso-scale finite element model is presented for investigating the FRP-concrete bond behaviour under static and dynamic loadings. It adopts a local concrete damage model. A large number of single shear tests under static pull-off loading were modeled. It is demonstrated that the developed model can satisfactorily simulate the static debonding behaviour, in terms of the load-carrying capacity and the local bond-slip behaviour. A preliminary study of the effect of the dynamic loading rate on the debonding behaviour was also conducted by considering a dynamic increase factor for the concrete strength as a function of strain rate. It is shown that a higher loading rate leads to a higher load-carrying capacity, a longer effective bond length, and a larger damaged area of concrete in the single shear loading scenario.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2014-08-29 修改稿日期：2015-02-10
基金项目：国家自然科学基金青年科学基金项目(NSFC 51308271)；云南省科技计划应用基础研究计划面上项目(2013FB018)；教育部留学回国人员科研启动基金
作者简介：李晓琴(1983-)，女，博士，讲师，主要从事FRP、混凝土、结构抗爆炸和冲击数值模拟研究．E-mail: Xiaoqin.Li@foxmail.com
更新日期/Last Update: 1900-01-01