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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2014  >  14(3): 24-33
WU Chong-fu, LI Yu, ZHANG Zhi-jun. Vertical soil arch effect analysis and soil pressure calculation behind piles for pile-anchor supporting system[J]. Journal of Traffic and Transportation Engineering, 2014, 14(3): 24-33.
Citation: WU Chong-fu, LI Yu, ZHANG Zhi-jun. Vertical soil arch effect analysis and soil pressure calculation behind piles for pile-anchor supporting system[J]. Journal of Traffic and Transportation Engineering, 2014, 14(3): 24-33.
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Vertical soil arch effect analysis and soil pressure calculation behind piles for pile-anchor supporting system

  • School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao 066004, Hebei, China

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  • Author Bio:

    WU Chong-fu (1966-), male, associate professor, PhD, +86-335-8067926, wcfysu@163.com

  • Received Date: 2014-01-26
  • Publish Date: 2014-06-25
    Abstract
  • Aimed at the vertical soil arch effect of pile-anchor retaining structure, the formation mechanism and geometric characteristics of vertical soil arch and its influence on soil stress distribution were analyzed by using the mechanical equilibrium condition of soil arch.In indoor model test, soil stress field distributions at different excavation stages were obtained by monitoring.The existence of vertical soil arch was proved by comparing the test data, the monitoring data and the theoretical values.Based on the vertical soil arch effect, the expressions of soil stress distribution behind pile were derived by adopting the oblique soil element method, and the computed values were analyzed based on the classic theory computation values and the test data.Study result shows that the gravity stress curve of soil attenuates between anchors.There are relative peaks on lateral stress curve at anchor supporting point behind pile.Vertical soil arch appears above the bolts, and has significant effect on soil stress redistribution.The soil pressure distribution law calculated by the oblique soil element method considering vertical soil arch effect is consistent with the test result, the biggest soil pressure difference at the same depth of two curves is less than 15%, which proves that the calculating method of soil pressure is accurate.

     

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