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Volume 36 Issue zk2
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LI Dong-hai, WANG Meng-shu, YANG Guang-wu, LIU Jun, ZHANG Ding-li. Monitoring of double-row piles and high buildings adjacent to deep foundation pits[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 412-417. DOI: 10.11779/CJGE2014S2072
Citation: LI Dong-hai, WANG Meng-shu, YANG Guang-wu, LIU Jun, ZHANG Ding-li. Monitoring of double-row piles and high buildings adjacent to deep foundation pits[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(zk2): 412-417. DOI: 10.11779/CJGE2014S2072
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Monitoring of double-row piles and high buildings adjacent to deep foundation pits

  • 1. Tunnel and Underground Engineering Research Center of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;
    2. Beijing Municipal Engineering Research Institute, Beijing 100037, China;
    3. Beijing major Projects Construction Headquarters Office, Beijing 100029, China;
    4. Beijing University of Civil Engineering and Architecture, Beijing 100044, China

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  • Received Date: July 27, 2014
  • Published Date: July 27, 2014
    Graphical Abstract
    • Abstract
  • The existing buildings adjacent to a deep foundation pit will be damaged seriously or additionally deformed when the foundation pit is excavated, and it will lead to motion of soils. The double-row piles as one of shielding measures are studied. Based on a deep foundation pit adjacent to high buildings in Beijing, the key design parameters of double-row piles such as distance of row piles, distance of piles, link of top beam, and strength of soils between the piles are analyzed. Through the numerical simulation and in-situ monitoring, the displacement field grouped by the double-row piles, soils after the piles and high buildings is analyzed. The deformation laws of the double-row piles, soils after the piles and high buildings are concluded. At the same time, it is proved that the double-row piles can reduce the displacement field obviously by comparing the double-row piles to the single-row ones. The horizontal displacement of soils after the piles decreases from 17 mm to 8 mm, with a percent of about 53%. The maximum differential settlement of high buildings is 6.9 mm and the angle variance is 0.33‰. In a word, the safety of buildings is ensured by monitoring during the excavation of the deep foundation pit. It may be useful reference to the similar engineering in future.
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    • References (16)
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