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Volume 37 Issue 12
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FENG Zhong-ju, WANG Hang, WEI Jin, GAO Xuan, JIA Yan-wu, ZHANG Xu. Model tests on vertical bearing performance of bridge pile foundation in loess gulch slope area[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(12): 2308-2314. DOI: 10.11779/CJGE201512022
Citation: FENG Zhong-ju, WANG Hang, WEI Jin, GAO Xuan, JIA Yan-wu, ZHANG Xu. Model tests on vertical bearing performance of bridge pile foundation in loess gulch slope area[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(12): 2308-2314. DOI: 10.11779/CJGE201512022
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Model tests on vertical bearing performance of bridge pile foundation in loess gulch slope area

  • 1. College of Highway Engineering Chang'an University, Xi'an 710064, China;
    2. Shaanxi Expressway Construction Group Company, Xi'an 710075, China;
    3. Zhongjiaotongli Construction Co., Ltd., Xi'an 710075, China;
    4. Xibei Engineering Corporation Limited, Power Construction Corporation of China, Ltd, Xi'an 710065, China;
    5. Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China

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  • Received Date: September 03, 2014
  • Published Date: December 19, 2015
    Graphical Abstract
    • Abstract
  • In order to ascertain the effect of loess gulch on the bearing capacity of bridge pile foundation, for the first time, based on the self-developed platform model test, the model tests can fully reflect the characteristics and work performance of pile foundation in loess gulch area. The change rules of vertical bearing capacity, pile axial force and lateral friction force of the pile foundation with different slopes and pile lengths are analyzed, and some engineering technical advices are given based on test results. The results show that: (1) With the increase of slope, the bearing capacity of piles with the same pile length decreases, the influence degree of bearing capacity increases gradually, and the range varies from 7% to 35%. (2) The pile bearing capacity increases with the increase of pile length to some extent; when the pile length increases to a certain length, the rate of increase becomes slow. (3) The effective pile length with the same buried depth decreases with the increase of slope. (4) The design of bridge pile foundation should fully consider the engineering technology of preventing the soil around piles being eroded in the loess gulch area.
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    • References (15)
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