|Table of Contents|

Analysis of Anticracking Ability of Loaded Reinforced Concrete Beam Strengthened with Prestressed CFRP Sheet(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2014年03期
Page:
38-44
Research Field:
Publishing date:

Info

Title:
Analysis of Anticracking Ability of Loaded Reinforced Concrete Beam Strengthened with Prestressed CFRP Sheet
Author(s):
CHENG Dong-hui ZHANG Shu YE Xu YU Yong-zhi
School of Civil Engineering, Northeast Forestry University
Keywords:
prestressed CFRP sheet reinforcement ratio loaded reinforced concrete beam anticracking ability crack width
PACS:
-
DOI:
-
Abstract:
In order to study the effect of reinforced concrete flexural members with prestressed carbon fiber reinforced polymer (CFRP) sheet on crosssection cracks, two groups of eight test beams with different reinforcement ratios were designed. Based on bearing 40% ultimate load, the crosssection test beams were strengthened with prestressed CFRP sheet, and the static load test was completed to obtain test data of bending crack distribution, crack width and height of concrete flexural members in the early stage of loading and being strengthened after second loading. Based on the test data, through theoretical analysis, calculation formulae of average crack spacing and maximum crack width of concrete beam strengthened with prestressed CFRP sheet were put forward, which coordinated with Code for Design of Concrete Structures. The study results show that in the process of second loading, prestressed CFRP sheet can effectively suppress the development of crack, and with increasing of the prestressed tensile stress, the average crack spacing and crack width decrease.

References:

Memo

Memo:
-
Last Update: 2014-09-30