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Soil Arching Effect of Cantilever Piles Model Test and Numerical Simulation

Author: FanYouQuan
Tutor: WangGuiLin
School: Chongqing University
Course: Geological Engineering
Keywords: Cantilever pile Soil arching effect Time effect Earth pressure Numerical Simulation
CLC: TU473.1
Type: Master's thesis
Year: 2010
Downloads: 139
Quote: 1
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Abstract


Cantilever pile rely mainly on the soil arching effect to block the pile soil slide, and then play the effect of anti-slide, which has been confirmed by a large number of engineering practice. Soil arching effect of soil non-uniform deformation process of evolving form of load transfer, the pile Houtu arching effect a long time for the engineering concern, especially since the 20th century, the soil arching effect of the measured data, the model test and theoretical research the results gradually increased, and have been widely used in practical engineering, and achieved good results. But at the same time can be seen, the theoretical research on soil arching effect is not mature, not deep enough understanding of soil arching effect. To this end, on the basis of in-depth study of the interaction between the cantilever pile and soil pile soil behind the arch effect Formation Mechanism of important application issues need to be addressed in the design of the current cantilever pile. The paper relies on the National Outstanding Youth Science Foundation of China (NO.50625824), the National Natural Science Foundation of China (NO.50878218), the \, NO.2008SXG02 2) indoor push the pile model test and numerical simulation the cantilever pile Houtu of internal stress distribution characteristics and soil arching timeliness study, the main work and the conclusions are as follows: (1) in the lookup on the basis of relevant literature, the cantilever pile soil arching effect and its formation mechanism of the status quo, summarizes and analyzes the results of previous research in the pile spacing, soil properties of soil arching. (2) design of the cantilever pile indoor push the pile model test, the test focuses on the cantilever pile soil stress distribution inside characteristics and pile soil arching, the scope of research, analysis of pile spacing, filling materials, soil moisture content of the pile soil arching; analysis of the link between the pile friction soil arching effect and direct soil arching effect; arching effect of the soil around the pile formation, development and dissipation of the whole process. Under the conditions of the last external thrust cantilever pile timeliness of internal stress distribution characteristics of the soil mass and soil arching effect were analyzed. (3) the use of large general-purpose finite element analysis program ANSYS cantilever pile has been calculated, and the numerical results with indoor model test results of the analysis were compared to explore the cantilever pile pile spacing, soil moisture content of soil arching between piles effects. And numerical simulation analysis of different elastic moduli baffle the pile soil mass soil arching effect.

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CLC: > Industrial Technology > Building Science > Soil mechanics,foundation engineering > Foundation > Pile foundation and deep foundation > Pile
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