建立表层嵌贴 FRP 板条-混凝土界面黏结-滑移模型的方法

doi:10.12066/j.issn.1007-2861.1775

上海大学学报(自然科学版) ›› 2018, Vol. 24 ›› Issue (2): 304-313.doi: 10.12066/j.issn.1007-2861.1775

建立表层嵌贴 FRP 板条-混凝土界面黏结-滑移模型的方法

张智梅(), 张振凯, 熊浩, 王卓, 陈刚

上海大学土木工程系, 上海 200444

收稿日期:2016-04-18 出版日期:2018-04-30 发布日期:2018-05-07
通讯作者: 张智梅 E-mail:zhangzhimei@staff.shu.edu.cn

Method of bond-slip model of near-surface mounted FRP strips-concrete interfaces

ZHANG Zhimei(), ZHANG Zhenkai, XIONG Hao, WANG Zhuo, CHEN Gang

Department of Civil Engineering, Shanghai University, Shanghai 200444, China

Received:2016-04-18 Online:2018-04-30 Published:2018-05-07
Contact: ZHANG Zhimei E-mail:zhangzhimei@staff.shu.edu.cn

摘要/Abstract

摘要：

提出一种建立表层嵌贴纤维增强复合材料(fiber reinforced polymer, FRP)板条-混凝土界面黏结-滑移模型的高精度数值分析方法. 通过该方法, 仅利用相关试验中施加的各级荷载值, 及其对应的 FRP 板条加载端与自由端的滑移值, 即可确定黏结-滑移模型中的各待定参数. 通过 MATLAB 编程实现了该数值分析方法, 并通过一系列拉拔弯曲黏结节点试验数据验证了该方法的可靠性, 进而分析了混凝土强度、FRP 板条黏结长度等因素对黏结-滑移模型的影响. 最后利用得到的界面黏结-滑移模型, 探讨了表层嵌贴FRP板条加固混凝土梁的裂缝计算问题.

关键词: 表层嵌贴, FRP 板条-混凝土界面, 黏结-滑移模型, 裂缝计算

Abstract:

A high-precision numerical method is proposed to study a bond-slip model for near-surface mounted fiber reinforced polymer (FRP) strips-concrete interfaces. With this method, undetermined parameters of a given bond-slip model can be determined only using the test data of every FRP steps' load and slips of the free end and loaded end in the related tests. A computer program is developed for the purpose. Reliability of the method is verified by a series of test date of pullout-bending bonded joints. Influences of bond length of FRP strips and strength of concrete on bond-slip model are analyzed. Crack problems of the near-surface mounted FRP concrete beam are studied based on the obtained bond-slip model of the interface.

Key words: near-surface mount, fiber reinforced polymer (FRP) strips-concrete interface, bond-slip model, crack calculation

中图分类号:

TU377.94

张智梅, 张振凯, 熊浩, 王卓, 陈刚. 建立表层嵌贴 FRP 板条-混凝土界面黏结-滑移模型的方法[J]. 上海大学学报(自然科学版), 2018, 24(2): 304-313.

ZHANG Zhimei, ZHANG Zhenkai, XIONG Hao, WANG Zhuo, CHEN Gang. Method of bond-slip model of near-surface mounted FRP strips-concrete interfaces[J]. Journal of Shanghai University（Natural Science Edition）, 2018, 24(2): 304-313.

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建立表层嵌贴 FRP 板条-混凝土界面黏结-滑移模型的方法

Method of bond-slip model of near-surface mounted FRP strips-concrete interfaces

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