›› 2009, Vol. 30 ›› Issue (1): 79-85.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on superposition method of interaction between soil frost heave and beams on foundation

LI Fang-zheng   

  1. Branch Institute of Mine Construction, CCRI, Beijing 100013, China
  • Received:2007-06-05 Online:2009-01-10 Published:2011-01-14

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Abstract:

Based on the ideal of stochastic medium, the ground ridging induced by frost heave submits to normal distribution. Regarding on research background of the crossing engineering in Shanghai stadium, the express of frost heave for multi-freeze pipes is derived by the basic principle of superposition method. Simplifying the non-uniform distribution load as multi-stepped uniform distribution load, displacements and force of interaction between frost heave and beams on foundation are acquired by solving the equation of beams on elastic foundation on freezing soil with the program of MATLAB. Moreover, it is verified by survey. Finally, the conclusion that the frost heave decreases with the increase of the rigidity of beams on foundation and external load, and increases with the increase of the factor of elastic drag and free frost heave, is drawn by analyzing the influential factors of interaction between frost heave and beams on foundation.

Key words: stochastic medium theory, frost heave, calculation method of superposition, beams on elastic foundation, interaction

CLC Number: 

  • TU 445
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