滕海文1，2，贺志远1，赵卓3

（1 北京工业大学建筑工程学院， 北京 100124； 2 北京工业大学城市与工程安全减灾省部共建教育部重点实验室， 北京 100124； 3 郑州大学土木工程学院， 郑州 450001）

 

［摘要］箍筋的配置与否会引起锈蚀钢筋与混凝之间极限粘结状态的改变，基于Tepfers受均匀内压作用的厚壁圆筒力学模型和不同极限粘结状态时的受力模型，以未开裂混凝土对锈蚀钢筋的有效约束力为入手点，建立了锈蚀钢筋与混凝土之间的粘结强度模型。通过对国内外文献试验结果进行模型的验证，结果表明无箍筋配置时粘结强度模型的有效性与劈裂破坏时变形肋前的锥面倾角有关，有箍筋配置时粘结强度模型的有效性与钢筋的锈蚀程度有关。

［关键词］混凝土; 锈蚀; 钢筋; 粘结强度; 模型

中图分类号：TU375，TU317+.1      文献标识码：A      文章编号：1002-848X(2013)14-0073-04

 

Teng Haiwen1,2, He Zhiyuan1, Zhao Zhuo3

(1 The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124,China; 2 Beijing Key Lab of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China; 3 School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China)

 

Abstract: Stirrup lead to different ultimate bond states between corroded reinforcement and concrete. Based on Tepfers’s mechanical model of thick walled cylinder under uniform internal pressure and ultimate stress model with different ultimate bond states, effective binding force of uncracked concrete to the corroded reinforcement in the ultimate state was studied to establish the bond strength model between corroded reinforcement and concrete. The bond strength model was verified through test results of related literature from home and broad.Results show the validity of bond strength model without stirrup relates to the conical inclination of deformed ribs in splitting failure, and the validity of bond strength model with stirrup relates to the degree of corrosion.

Keywords: concrete; corrosion; reinforcement; bond strength; model

*国家自然科学基金资助项目（51078334）,北京市自然科学基金重大项目［8100001］。

作者简介：滕海文，副教授，博士，硕士研究生导师，Email:tenghaiwen@bjut.edu.cn。

 

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