JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2018, Vol. 48 ›› Issue (2): 30-38.doi: 10.6040/j.issn.1672-3961.0.2016.371

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Soil pressure distribution behind the basement wall considering the permanent existence of foundation pit retaining piles

LI Lianxiang1,2, LIU Bing1,2*, CHENG Xiaoyang1,2   

  1. 1. School of Civil Engineering, Shandong University, Jinan 250061, Shandong, China;
    2. Engineering Research Center of Foundation Pit and Deep Foundation, Shandong University, Jinan 250061, Shandong, China
  • Received:2016-09-26 Online:2018-04-20 Published:2016-09-26

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Abstract: In order to study the relationship between the soil pressure distribution behind the basement wall and the foundation pit retaining piles, and explore the interaction mechanism between the supporting structure and the underground main structure under the permanent, a Plaxis-3D simulation for a pile-anchor retaining pit was carried out. The results showed that the soil pressure distribution was evidently affected by the piles. The soil pressure increased at first then decreased along with depth, showing an arc shape distribution. The maximum internal force on basement exterior wall decreased and the soil retaining ability strengthened obviously. By fitting the simulation results of several practical engineering, the soil pressure distribution curve was derived and the curve was further simplified to analye the internal force on basement exterior wall. Results proved that the force which was calculated by the simplified curve could well agree with the simulated values. The simplified curve had good applicability in engineering geological condition of Jinan, and provided references for basement exterior wall design when supporting piles existed.

Key words: pile-anchor retaining structure, soil pressure, foundation pit, basement exterior wall, reduction coefficient, Plaxis-3D

CLC Number: 

  • TU473
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