›› 2009, Vol. 30 ›› Issue (2): 572-576.

• Fundamental Theroy and Experimental Research • Previous Articles    

Monitoring horizontal displacements of support structure for a complicated planar foundation pit and its reinforcement

XIONG Zhi-biao, WANG Qi-yun   

  1. College of Urban Construction, South China University, Hengyang 421001, China
  • Received:2007-05-15 Online:2009-02-10 Published:2011-01-27

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Abstract:

The combination of a single row of man-excavation piles and a single-row of anchorage pillars is applied as the support structure for a complicated planar foundation pit. During the construction of the support structure and excavation, horizontal displacements monitoring is carried out for the pit. Monitoring results show that in some parts the tops of support structure, their deformations is larger than the advance warning value and continue to aggravate in the process of the excavation; the support structure is in dangerous state. The construction union don’t take measure against dangerous state and get no effect. The situations of the support structure in design and monitoring condition are described; and the monitoring results of 19 points are analyzed; the mechanism of the dangerous situation is explained; and the reinforcement measures are proposed in light of these existing problems, so as to obtain good effectiveness.

Key words: foundation pit, horizontal displacement, monitoring, reinforcement

CLC Number: 

  • TU 470
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