Stone filling and island building construction bearing platform method for underwater stone abrupt slope area

Abstract

The invention discloses a stone filling and island building construction bearing platform method for an underwater stone abrupt slope area. Grouting steel sleeves, thick steel bars and cement-water glass double-liquid slurry are used for forming composite small anti-slide piles to resist an island building body from sliding down into a river, so that the island building area and the backfill engineering quantity are reduced, the construction period and the construction cost are saved, and the construction safety can further be ensured. The grouting steel sleeves are not taken out, so that thelateral stability of a bearing platform foundation pit in the later period is improved, and foundation pit excavation safety is guaranteed. Curtain grouting of the periphery of a foundation pit and bottom sealing grouting of the bottom of the foundation pit are carried out by adopting the cement-water glass double-liquid slurry, bearing platform foundation pit water stopping is carried out, the water stopping effect is good, secondary water stopping is not needed in subsequent bearing platform foundation pit excavation, and maximization of economy, safety and practicability is achieved. Compared with the prior art, large equipment is not needed, a large number of steel structures are not needed, the structure is safe, the procedure is single, and economical efficiency is good. The problemthat the bearing platform in the underwater stone abrupt slope area is difficult to construct is solved.

Description

technical field [0001] The invention relates to the technical field of platform cap construction, in particular to a cap platform construction method for filling rocks and building islands in underwater rocky steep slope areas. Background technique [0002] In recent years, large-scale construction of traffic road networks has been underway in various parts of our country, and bridges, as a common structural form across rivers, lakes and seas, are often used in every traffic road network. When bridges are constructed with water bearing platforms, there are usually The following methods: [0003] (1) Steel cofferdam construction method: When the cap is in the water, first set up steel sheet pile cofferdam or steel cofferdam to place the group of piles in the cofferdam, then fill the bottom of the cofferdam with underwater concrete to seal the bottom, and after solidification, the water Drain the piles so that the piles are on dry ground, then install the reinforced formwork ...

AI Technical Summary

Problems solved by technology

The underground diaphragm wall equipment is large, and it is difficult to place the rocky steep slope area near the water. The slope of the island is subject to a large load, the platform is not safe, and the construction cost is high.

Images