›› 2004, Vol. 25 ›› Issue (2): 220-225.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Application of multi-arch retaining structure composed of borehole cast-in-place piles to deep foundation pit

LI Jun-cai1,2, CHEN De-wen3, LUO Guo-yu1   

  1. 1. Geoscience Department, Nanjing University, Nanjing 210093, China；2.College of Civil Engineering,Nanjing University of Technology, Nanjing 210009, China；3. Nanjing design Institute of Civil architecture, Nanjing 210000, China
  • Received:2003-05-11 Online:2004-02-10 Published:2014-07-15

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Abstract: The multi-arch retaining structure composed of borehole cast-in-place piles is a type of combined section in which large diameter reinforced concrete bored piles and small diameter bored piles are arranged in the shape of an arch. In this structure the bending moment and the shearing force are converted into the axial pressure along the arch axis. It shows a reasonable bearing ability, has a better section efficiency, and performances larger strength and rigidity than the pile (wall) structure with same quality. The top is connected with reinforced concrete periphery beam, then, without anchoring and poling it can also support a deeper foundation pit than pile (wall) structure. If the excavation depth is too deep, we can lay reinforced concrete rib stiffeners in a proper distance in the direction of the depth. Briefly, this is a new type of retaining structure, and the economic benefit is notable.

Key words: multi-arch retaining structure, deep-foundation pit, earth pressure, deformation

CLC Number: 

  • TU432
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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