Journal of Shanghai University(Natural Science Edition) ›› 2018, Vol. 24 ›› Issue (2): 304-313.doi: 10.12066/j.issn.1007-2861.1775

• Research Articles • Previous Articles     Next Articles

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

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

  1. 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

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

CLC Number: