Simulation experiment about oversize box culvert jacked into highway subgrade

Feng Zhong-ju; Ren Wen-feng; Xie Fu-gui; He Tao; Men Xiao-xiong

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Feng Zhong-ju, Ren Wen-feng, Xie Fu-gui, He Tao, Men Xiao-xiong. Simulation experiment about oversize box culvert jacked into highway subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(4): 74-78.

Citation:

Feng Zhong-ju, Ren Wen-feng, Xie Fu-gui, He Tao, Men Xiao-xiong. Simulation experiment about oversize box culvert jacked into highway subgrade[J]. Journal of Traffic and Transportation Engineering, 2007, 7(4): 74-78.

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Simulation experiment about oversize box culvert jacked into highway subgrade

1.
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China
2.
Bridge Technology Co.Ltd.of Road and Bridge Group, Beijing 100102, China

More Information

Author Bio:
Feng Zhong-ju (1965-), male, EngD, professor, +86-29-82336860, ysf@gl.chd.edu.cn
Received Date: 2006-12-27
Publish Date: 2007-08-25

Abstract

Abstract

In order to make oversize box culvert being jacked into highway subgrade smoothly, the actual friction status of box culvert was simulated, box culvert and surrounding soil were simplified for concrete model and soil model respectively, the mutative rules of friction coefficients between concrete and concrete, concrete and soils with different amounts of water were analyzed after and before diminishing fiction resistance, and the pushing force of box culvert was computed according to friction coefficients. It is found that the average coefficient of gliding friction between concretes is 0.31;the mixture of paraffin and engine oil can reduce the friction between concretes obviously, the average friction coefficient is 0.12, and 61% of the previous friction coefficient is reduced; the amount of water in soil body surrounding box culvert greatly influences the friction coefficient between concrete and soil, the bigger the amount of water is, the smaller the friction coefficient is.Simulation result shows that when box culvert is jacked, it is necessary to explore the geological condition surrounding box culvert in order to hold the engineering characteristic of surrounding soil body in hand and give reasonable technology to diminish fiction resistance.
- road engineering,
- oversize box culvert,
- simulation experiment,
- friction coefficient

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References(15)

References

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