Precipitation structure suitable for caisson and arrangement process thereof

Abstract

The invention discloses a precipitation structure suitable for a caisson, which can solve the problems that underground water has micro-corrosivity to concrete in a coastal environment due to influence of deicing salt, sea wind, salinized soil and the effect of the deicing salt in water freezing regions of severe cold and cold regions in winter, has micro-corrosivity to steel bars in the concreteduring long-term water immersion, has weak corrosion to steel bars in concrete when the caisson is subjected to alternative water immersion, and has weak corrosion to a steel structure, and also can solve the problem that when the underground water has micro corrosion to the concrete, foundation soil also has micro corrosion to the concrete, so that the caisson is easily influenced by the underground water in the building process. The system comprises an out-of-well deep well precipitation structure arranged outside a well and an in-well open drainage structure arranged in the well. The in-well open drainage structure comprises caissons, well holes, well pipes and a deep well water pump, the deep wells are located in the caissons, one well hole is formed in each caisson, one well pipe is vertically fixed in each well hole, and the well pipes extend out of the caissons to be connected with the deep well water pump in a matched mode.

Description

technical field [0001] The invention relates to the technical field of caissons, in particular to a dewatering structure suitable for caissons and a laying process thereof. Background technique [0002] In the field of caisson technology, due to the high water content of the soil layer and poor structure, this influencing factor should be fully considered in the design and construction of the caisson, especially in the construction process, necessary precipitation measures should be taken, and according to the survey There are no pollution sources around the site, and the groundwater is slightly corrosive to the concrete in severe cold and cold areas where the water level is frozen in winter, affected by deicing salts, sea breeze, saline soil, affected by deicing salts, and coastal environments. The steel bars in the concrete are slightly corrosive; when alternately immersed in water, they are weakly corrosive to the steel bars in the concrete, and the groundwater is slightl...

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Problems solved by technology

[0002] In the field of caisson technology, due to the high water content of the soil layer and poor structure, this influencing factor should be fully considered in the design and construction of the caisson, especially in the construction process, necessary precipitation measures should be taken, and according to the survey There are no pollution sources around the site, and the groundwater is slightly corrosive to the concrete in severe cold and cold areas where the water level is frozen in winter, affected by deicing salts, sea breeze, saline soil, affected by deicing salts, and coastal environments. The steel bars in the concrete are slightly corrosive; when alternately immersed in water, they are weakly corrosive to the steel bars in the concrete, and the groundwater is slightly corrosive to the steel structure. When the groundwater is slightly corrosive to the concrete, the foundation soil is also slightly corrosive to the concrete. Corrosive, thus causing the caisson to be easily affected by groundwater during the laying process

[0003] The patent with the publication number of CN103485358B discloses a method for constructing an underground sinking caisson. Compared with this application, it cannot solve the problem proposed by this application: the groundwater is affected by the freezing of water level in severe cold and cold areas, and is affected by deicing salt. , sea breeze, saline soil, affected by deicing salt, and the concrete in the coastal environment is slightly corrosive. When immersed in water for a long time, it is slightly corrosive to the steel bars in the concrete; when it is alternately soaked in water, it is weak to the steel bars in the concrete. Corrosiveness, groundwater is weakly corrosive to steel structures. When groundwater is slightly corrosive to concrete, the foundation soil is also slightly corrosive to concrete, which leads to the problem that groundwater is easily affected by the caisson during the laying process.

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