›› 2012, Vol. 33 ›› Issue (7): 2027-2034.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Deformation controlling criterion of effect on underground pipelines due to foundation pit excavation

ZHANG Chen-rong1, 2, YU Jian1, 2, HUANG Mao-song1, 2   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China
  • Received:2011-03-16 Online:2012-07-11 Published:2012-07-13

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Abstract: Lateral soil movement induced by foundation pit excavation might adversely affect any nearby underground pipelines even damage. Based on displacement-controlled theory, the development of free soil movement induced by excavation with retaining walls is studied. By comparison with displacement-controlled finite element method, the displacement-controlled two-stage simplified method is verified. Secondly, the environment protection criterion for foundation pit in current technical code for excavation engineering is discussed; and a new deformation controlling criterion for excavation based on the protection for adjacent pipelines is introduced，in which the relationship between the excavation depth and the allowed maximum lateral deformation of the retaining wall is given. It is hoped that the above work could give theoretical support for the construction of environment protection estimation system in foundation pit excavation.

Key words: foundation pit excavation, underground pipelines, displacement-controlled two-stage method, environment protection foundation pit excavation, underground pipelines, displacement-controlled two-stage method, environment protection

CLC Number: 

  • TV 551
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