Research of Flow Mechanism and Numerical Simulation on the Post-Prestressed Duct Grouting

Abstract:

Post-prestressed duct grouting is a complex construction process and it is affected by many factors. Since there are no clear cognitive relations to the influencing factors of the grouting quality, it is hard to make the best control program during the construction. By the theoretical applicability and parameters analysis through the grouting process, this article used the numerical simulation method to analyze the grouting process and obtained the correspondence between the initial velocity, grouting pressure and grouting quality. To the height difference and bending in the duct, the relationship between volume and forming quality were analyzed, the results has reference value to the design of duct gas vent.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 1567-1573
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.1567
• Online since: September 2013
• Authors: Geng Xu, Ren Jun Yan, Chang Lian She, Lin Zhi Xu, Lin Xu, Fen Li
• Keywords: Design of Prestressed Duct, Grouting Speed, Numerical Simulation, Prestressed Duct

References

[1] Junsheng Zhuang et al. Foreign Prestressed Concrete Engineering Construction Guidance(In Chinese, China Railway Publication, China, 1998).

[1] Yunhua Lei, Tao Shen. Introduction of Foreign Post-prestressed Duct Grouting Technology( In Chinese). World Bridges, Vol 4, 33-35 (2003).

[3] Dabin Feng, Jianwei Dong, Lvxiang Meng. Research Status of Post-prestressed Duct Grouting and Improvement Measures( In Chinese). Construction Technique, Vol 4, 59-51（2006）.

[4] Xiangfeng Xu. The Performance Test of The Duct Grouting and The Research of The Construction Quality( In Chinese). Southeast University（2005）.

[5] Plastic Bellows for Prestressed Concrete Bridge. Transportation Standard of the People's Republic of China, JT/T 529-(2004).