Construction method of prefabricated underwater tie beam

Abstract

The invention discloses a construction method of a prefabricated underwater tie beam. The method comprises the following steps: firstly, prefabricating the tie beam, mounting sleeves at two ends of the prefabricated tie beam, and then sleeving the sleeves at the periphery of a pile casing of a formed foundation; lowering the sleeves to a specified mounting position, pouring bottom sealing concretebetween the pile casing and the sleeves, and evacuating a water body between the pile casing and the sleeves; then, detaching the pile casing along the top of the pile foundation, and conducting cast-in-place construction operation such as steel bar binding in the sleeves; and after a pile column and the beam are connected, solidified and formed, breaking the bottom sealing concrete, and dismounting the sleeves to finish construction. According to the construction method, the sleeves are used for replacing the pile casing to serve as waterproof parts for subsequent construction operation, theconstruction area can be reduced to the pile foundation range, pollution to water and occupation of the running water section area are reduced, a large number of turnover materials and cost are saved, and the construction efficiency is improved; and the construction quality of pile column and tie beam construction is guaranteed, the overall waterproof performance is improved, and the engineeringquality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method of a prefabricated and assembled underwater tie beam. Background technique [0002] The tie beam is a structure located on the pier column to improve the stress of the column and pile. It is generally strip-shaped and connects two piles of the same pier number, so that the two piles or columns are connected into a whole that bears the same force, so that the pile or pier The overall rigidity is strengthened. The tie beam mainly includes the pile foundation tie beam and the pile column tie beam. The pile foundation tie beam is set at the junction of the pile and the pier column, and is generally buried underground, mainly to increase the lateral stability and make the pile foundation bear the upper load as a whole; The pile tie beams are set in the middle of the pier to increase the lateral stability of the pier. Whether it is from the appearanc...

AI Technical Summary

Problems solved by technology

However, in order to achieve the specified bearing capacity, the burial of the casing can only rely on the piling machine to smash into the river bed, and the overall rigidity of the split-type assembled casing is relatively poor. Using it for pile foundation construction will lead to the joints between the casings. Deformation will not only fail to ensure the verticality of the pile, but may also damage the waterproof measures at the joints between the casings, resulting in a great potential safety hazard

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