Foundation pit support breast beam wire saw cutting method

Abstract

The invention relates to a foundation pit support breast beam wire saw cutting method which includes the steps: firstly, embedding steel bars into cast-in-place piles, daubing contact surfaces among the cast-in-place piles and a breast beam, and binding breast beam reinforcing steel bars; secondly, drawing cutting block diagrams; thirdly, pre-embedding PVC (polyvinyl chloride) sleeves, and avoiding blocking of the sleeves; fourthly, pre-embedding round steel lifting hooks on two sides of each concrete block to be cut; fifthly, constructing beam plate structures below a supporting beam and thebreast beam, and cutting parts of the pre-embedding PVC sleeves higher than beam surfaces; sixthly, arranging supporting systems at the bottom of the supporting beam; seventhly, arranging sleepers onthe supporting beam; eighthly, fixing a wire saw machine on the breast beam; ninthly, enabling a diamond wire saw to wound the pre-embedding PVC sleeves, and connecting the diamond wire saw with the wire saw machine to cut concrete blocks; tenthly, hosting the cut concrete blocks by the round steel lifting hooks to off-site place to be crushed. According to the method, noise and dust pollution aredecreased, the cut concrete blocks are transferred to off-site place to be crushed, and inside cleaning cost and time are reduced.

Description

technical field [0001] The invention relates to a wire saw cutting method, in particular to a wire saw cutting method for foundation pit support waist beams. Background technique [0002] In the deep foundation pit support system combined with cast-in-situ piles and internal supports, the first support is usually provided with crown beams on the support piles, and the second support and below are provided with waist beams on the side of the support piles. When the distance between the pile and the basement exterior wall is small, the waist beam often hinders the earthwork backfilling construction outside the basement, so the waist beam must be removed. The retaining piles are reliably connected. When using a wire saw to cut and remove the waist beam, the diamond wire saw cannot bypass the beam body for cutting like a support beam, and there is also great difficulty in lifting the cut concrete blocks. Contents of the invention [0003] The present invention aims to overco...

AI Technical Summary

Problems solved by technology

When using a wire saw to cut and remove the waist beam, the diamond wire saw cannot bypass the beam body like a support beam for cutting, and there are great difficulties in lifting the cut concrete blocks

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