Experimental Study on Flexural Behavior of RC Beams Strengthened by External Prestressing

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Cheng, Yinglei^1 ; Xu, Xinsheng^1

School of Civil Engineering and Architecture, University of Jinan, 336 Nanxinzhuang West Road, Jinan, Shandong

250022, China^1

关键词: External prestressing;    Force transmission;    Load-deflection curve;    Pre-stressed steel;    Structural reinforcement;    Structure reinforcement;    Two point loadings;    Ultimate bearing capacity;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/3/032071/pdf
DOI  :  10.1088/1755-1315/267/3/032071

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The efficient external prestressing reinforcement technology has the characteristics of simple construction, clear force transmission and convenient changing of cables, and has become a hot spot in the research of concrete structure reinforcement. In this paper, the external prestressed steel members are taken as the research object, and the two test beams are subjected to two-point loading test. The load-deflection curve is drawn. The ultimate bearing capacity, crack morphology and deflection of bending reinforced RC beams adopted external prestressing technology were compared and evaluated based on the experimental and theory analyzation. The experimental results show that the efficient external prestressing reinforcement technology can significantly improve the performance of concrete members and can be applied to structural reinforcement.