Full-scale Model Test for Anchorage Zone of Pylon: Error Analysis on Elongation of Annular Pre-Stressing Steel Strand

2nd International Conference on Civil Engineering and Materials Science

Ye, Xijun^1 ; Sun, Zhuo^1 ; Wang, Weifeng^2

School of Civil Engineering, Guangzhou University, Guangzhou

510006, China^1

School of Civil Engineering and Transportation, South China University of Technology, Guangzhou

510507, China^2

关键词: Cable-pylon anchorage zone;    Engineering practices;    Full-scale model tests;    Guangzhou;    Pre-stressing steels;    Project case;    Theoretical limits;    U-shaped;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/216/1/012032/pdf
DOI  :  10.1088/1757-899X/216/1/012032

来源: IOP

【 摘 要 】

In order to study the mechanism of the annular Pre-stressing steel strands applied to cable-pylon anchorage zone, a full-scale model test and finite element analysis were conducted. Through the research on the full-scale model test of the U-shaped annular Pre-stressing steel strands for the Anchorage Zone of Guangzhou Bridge, the prestressing technique for the U-shaped annular Pre-stressing steel strands was investigated, and the stress distribution in the model were measured and analyzed. It can be found that the elongation of the U-shaped pre-stressing steel strands is greater than the actual theoretical limit, and the results of some project cases also showed that it is a common phenomenon. Finally, the reasons for thus problems and relative suggestions are proposed, they can be used as a reference to engineering practice.