[1]李晓琴,陈前均陈建飞,陶 毅.中低速荷载下FRP与混凝土界面本构模型开发[J].西安建筑科技大学学报(自然科学版),2019,51(02):219-0222.[doi:10.15986/j.1006-7930.2019.02.010]
　LI Xiaoqin,CHEN Qianjun,CHEN Jianfei,et al.Constitutive Model Development of FRP-to-concrete interface under middle/low loading rates[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(02):219-0222.[doi:10.15986/j.1006-7930.2019.02.010]
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中低速荷载下FRP与混凝土界面本构模型开发()
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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:
51
期数:
2019年02期
页码:
219-0222
栏目:
出版日期:
2019-04-28

文章信息/Info

Title:
Constitutive Model Development of FRP-to-concrete interface under middle/low loading rates
文章编号:
1006-7930(2019)02-0219-04
作者:
李晓琴1; 陈前均1; 4陈建飞2; 陶 毅3
（1.昆明理工大学 建筑工程学院, 云南 昆明 650500; 2.贝尔法斯特女王大学 建筑与土木规划学院， 英国 贝尔法斯特 BT9 5AG;3.西安建筑科技大学 土木工程学院，陕西 西安 710055）
Author(s):
LI Xiaoqin1;  CHEN Qianjun1;  4CHEN Jianfei2;  TAO Yi3
(1.Faculty of Civil Engineering, Kunming University of Science and Technology, Kunming 650500, China 2.School of Planning, Architecture and Civil Engineering, Queens Univ. Belfast, Belfast BT9 5AG, UK 3.School of Civil Engineering, Xi’an Univ. of Arch. Tech. , Xi’an 710055, China)
关键词:
Constitutive Model Development of FRP-to-concrete interface under middle/low loading ratesLI Xiaoqin1;  CHEN Qianjun1;  CHEN Jianfei2;  TAO Yi3（1.Faculty of Civil Engineering;  Kunming University of Science and Technology;  Kunming 650500;  China 2.School of Planning;  Architecture and Civil Engineering;  Queen’s Univ. Belfast;  Belfast BT9 5AG;  UK3.School of Civil Engineering;  Xi’an Univ. of Arch. ＆ Tech. ;  Xi’an 710055;  China）Abstract: Fiber reinforced polymer（FRP）can be used to reinforc
Keywords:
FRP; Concrete; Middle/low loading rates; Constitutive relation of the interface; Material model development
分类号:
TU375.1
DOI:
10.15986/j.1006-7930.2019.02.010
文献标志码:
A
摘要:
纤维增强复合材料（fiber reinforced polymer，简称FRP）常被用于加固钢筋混凝土结构，FRP与混凝土的粘结性能是确保加固效果的关键，但目前缺乏合适的考虑FRP与混凝土界面行为非线性和滑移速率效应的本构模型。本研究基于LS-DYNA子程序开发平台，进行了本构模型开发，该模型考虑了界面本构非线性关系及滑移速率效应对界面剪切模态断裂能 的影响，完整的定义了中低速荷载（滑移速率为10-7 m/s ~ 10-3 m/s）作用下FRP与混凝土界面的动态粘结-滑移关系。采用该模型对FRP与混凝土界面单元受中低速荷载作用的纯剪切模态进行有限元模拟，有限元计算结果表明，该本构模型可以准确反映中低速荷载作用下FRP与混凝土界面的动态粘结-滑移关系。
Abstract:
Fiber reinforced polymer（FRP）can be used to reinforced concrete structure strengthening. The bond behaviors between FRP and concrete significantly affect effectiveness of FRP retrofitting. There is a lack of appropriate constitutive model which includes both bond-slip nonlinearity consideration and strain/slip rate effects. In the current study, based on the LS-DYNA subroutine working platform, a material model is developed. The model considered the nonlinearity of the interface constitutive relationships and the effects of strain/slip rate on the shear mode fracture energy . A dynamic bond-slip relation of FRP-to-concrete interface under middle/low loading rates (10-7 m/s~10-3 m/s) can be completely defined with this developed model. The model is further used to simulate FRP-to-concrete interface elements under middle/low speed loading in shear mode tests. The finite element analysis results show that this developed constitutive model can be used for representing the dynamic behavior of FRP-to-concrete interface under middle/low loading rates accurately

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2018-10-01 修改稿日期：2019-03-20基金项目：国家自然科学基金青年科学基金 (NSFC51308271 NSFC51408478); 昆明理工大学分析测试基金项目(2017M20162110027)第一作者：李晓琴（1993—）女，副教授，博士，主要从事FRP在结构加固领域的研究. E-mail:xiaoqin.li@foxmail.com
更新日期/Last Update: 2019-05-23