Method for non-destructive taking-out of guard pile
A pile point and pile sinking technology, applied in the direction of sheet pile wall, building, foundation structure engineering, etc., can solve the problems of large initial pulling force, high cost, loss of recycling and reuse, etc.
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[0031] Beijing Tongzhou Pipe Corridor Pile Protection Project.
[0032] The soil layer condition of the site soil from top to bottom: about 1m thick miscellaneous fill, about 2m thick soft plastic-plastic silty clay, about 30m thick slightly dense, medium dense to dense state fine sand, medium sand, The soil at the end of the pile is dense medium sand.
[0033] using PRC- D600B110 mixed reinforced prestressed concrete pipe piles are used as guard piles, with a length of 15m. Six φ20*3 grouting steel pipes are reserved at the symmetrical positions in the pile, two of which are used for grouting at the bottom of the pile and four are used for grouting at the side of the pile. Connected. Two recyclable bolts.
[0034] The construction steps and conditions are as follows:
[0035] 1. On the pile point, use a long auger to make the lower grouting loosening hole, with a diameter of 700mm, a depth of 16m, and a grouting height of 0.5m;
[0036] 2. Vibrate the sinking pile with...
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