Construction method for existing basement pile foundation with high water level

Abstract

The invention belongs to the field of basement structure demolition and renovation, and particularly relates to a construction method for a basement pile foundation with high water level. The construction method sequentially comprises the following steps of pre-construction preparation, floor reinforcement, hole opening, sleeve placement, pile forming construction and sleeve recovery. The method has at least the following advantages that a water drill is adopted to opening holes for floor opening, so that the noise pollution and the dust pollution are reduced; a sleeve is used for drainage, sothat the pollution generated by mud to an existing basement structure in the traditional pile repairing construction is avoided; mud generated by the pile repairing construction is treated through amud-water separation system and then transported out of a factory, so that the treatment efficiency is improved, and the pollution to the environment is reduced; generated construction waste is smalland is treated in a centralized clearing and transportation mode, so that the cleanliness of a construction site is guaranteed; and continuous precipitation is avoided, underground water resources areprotected, and the influence on the surrounding environment is reduced at the same time.

Description

technical field [0001] The invention belongs to the field of dismantling and modifying basement structures, and in particular relates to a construction method for pile foundations in existing basements with high water levels. Background technique [0002] With the diversified development of the construction market, there are more and more projects for functional transformation of original buildings, and the accompanying structural demolition and modification work has become a construction difficulty in the process of functional transformation of original buildings. [0003] At present, there are not many mature construction methods for the demolition and modification of existing basement structures in the industry, especially in areas where the groundwater level is high, and it is necessary to add piles to existing basement structures whose design bearing capacity of the original pile foundation cannot meet the needs of the new structure after demolition and modification. In...

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Problems solved by technology

[0003] At present, there are not many mature construction methods for the demolition and modification of existing basement structures in the industry, especially in areas where the groundwater level is high, and it is necessary to add piles to existing basement structures whose design bearing capacity of the original pile foundation cannot meet the needs of the new structure after demolition and modification. Construction, the biggest construction difficulty is controlling the groundwater level, and there are still difficulties such as narrow construction space, difficulty in controlling the verticality of pile formation, and easy damage to the built structure.

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