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ANALYSIS AND TREATMENT OF A QUALITY PROBLEM OF COMPOSITE FOUNDATION OF CFG PILES FOR BUILDING 4 IN XIZHAOSI RESIDENTIAL AREA
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Abstract Data obtained from composite foundation monitoring showed that the allowable bearing load of some cement flyash gravel(CFG) piles for building No.4 in Xizhaosi residential area did not meet the requirements of engineering design. After re-exploration and careful analysis，it was found that the sand soil under the bottom of the pile and around the pile was disturbed during the construction of CFG piles. This paper aims at reminding engineers and technicians of elaborate design and construction of CFG pile to ensure quality in composite foundation design and construction.
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Received: 21 March 2003
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