Вы здесь

Funct. Mater. 2017; 24 (1): 122-126.


Simulation analysis of prestressed tensioning whole processon direct constraint method

Kaimin Liu

School of Civil, Environmental Engineering & Architecture, Hubei University of Technology, Wuhan, Hubei 430068, China


The accuracy simulation of the prestressed tensioning effect is the foundation of prestressed bridge design, construction and reinforcement. Direct constraint method was used in the application of prestressed tensioning whole process simulation analysis on the background of prestressed testing experiment. Its aim was to achieve the real simulation of interaction between prestressed tendon and concrete in the tensioning whole process. Three-dimensional solid elements were adopted to simulate pre-stressed reinforcement unit and concrete unit. Bilinear Coulomb friction was adopted as the friction form between prestressed tendon and concrete. Direct constraint method that has the characteristics of good stability and fast convergence speed was used to calculate the effective stress of prestressed tendon at each tension stage. The loss of one-way stress was also calculated. The effective prestressed values by simulation on direct constraints method can be well with the measured values and the theoretical values on Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts. The method has theoretical basis on accurately simulating the actual stress in different stages of the prestressed tendon. It can be helpful for bridge design and reinforcement.

Direct constraint method; Finite element simulation; Tensioning whole process; Effective prestress; Prestressed tendon

1. Meng S.P., Wu C., Xiong J., Zhou Z.. Discussion on the Nonlinear Finite Element Analysis of Prestressed Concrete Complex Structures. Industrial Construction. Vol.39, No.12, 2009: 1-4

2. Zhao Y., Zhao P., Li S.Y. Three-Dimensional Finite Element Analysis of Large Prestressed Concrete Box Flume Structure. Journal of Yangtze River Scientific Research Institute. Vol.16 No.2, 1999: 17-20.

3. Su J.W., Yao C.Q., Li G.Q., Zhou H.J. Equivalent Load Method for Finite Element Analysis of Prestressed Concrete Structures. J. of HUST. (Urban Science Edition). Vol.20 No.2, 2003: 56-60.

4. Zhou Z., Meng S.P., Wu J., Jiang J.F. Analysis methods for the whole prestressing process of hybridized space structure. Industrial Construction. Vol.38, No.9, 2008: 91-95.

5. MSC. Marc user's Manual Volume A: Theory and User Information. MSC Software Corporation, Version 2008: 480-482.

6. Wen X.H., Huang M.H., Zhan L.H. Finite Element Study of the Giant Structure Modeling. Modern Manufacturing Engineering. No.1, 2010:10-14.

7. Farahani K., Mofid M., Vafai A. A solution method for general contact-impact problems[J]. Comput. Methods Appl. Mech. Engrg. Vol.187, 2000: 69-77.

8. Du L.H., Deng L.J., Chen H.G., Ye J.Q. Direct Constraint Procedure to Solve Contact Problems in Hydrostructures. J Tsinghua Univ (Sci &Tech). Vol.43, No.11, 2003:1534-1537.

9. Industry standards of the People's Republic of China. Code for design of highway reinforced concrete and prestressed concrete bridge and culverts (JTG D62-2004), 115-116; 2004, Beijing, China Communications Press.

10. Ye Z.H., Zhang G.C., Lu W. Test Study of Along-Path Stress of Prestressing Strands of Long Span PC Continuous Rigid-Frame Bridge. Bridge Construction. N0.5, 2009:21-23+27.

Current number: