›› 2010, Vol. 31 ›› Issue (9): 2854-2860.

• Geotechnical Engineering • Previous Articles     Next Articles

Design of removing diagonal brace in sub region considering coordinating role of space support systems

LIU Jun-yan1，LIU Yan1，WANG Hai-ping2   

  1. 1. School of Civil Engineering and Architecture of University of Jinan, Jinan 250022, China; 2. Jinan Municipal Engineering Design & Research Institute, Jinan 250002, China
  • Received:2010-04-19 Online:2010-09-10 Published:2010-09-16

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Abstract:

Comparing with horizontal support, the bracing systems of pile and oblique bracing have obvious advantages in big and deep foundation pit. Because the study about the removal of diagonal bracing is rare, the use of this system is limited. The accustomed removal method of the internal supporting is supporting followed removing. Based on the coordinating role of space support systems, according to the minimum potential result, the removing design thinking of supporting followed removing in several sub region and sections is proposed; and the calculation method of the length of sub region is derived. Finally, the feasibility and rationality of the proposed method are verified by the practical engineering. Acoording to the research, the top beam moment and the moment and displacement of the pile are the key factors which decide the length of the sub sections. The concept of the overall process design is came up. All of these can provide reference for this design and construction.

Key words: foundation pit, diagonal brace, exchanging of support, coordinating role of space

CLC Number: 

  • TU 473
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