Construction method for decomposing grading high-rise pile cap
A construction method and a technology for decomposing trenches, which are applied in filling, infrastructure engineering, construction, etc., can solve the problems of reducing the bearing capacity of piles, negative friction, and inability to compact the secondary backfill, so as to shorten the construction period and solve the problems of construction. Difficulty, the effect of reducing investment
Inactive Publication Date: 2009-06-03
GUIYANG AL-MG DESIGN & RES INST
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[0006] Although this method saves a certain period of time, since the piles are constructed first, the secondary backfill soil between the piles cannot be compacted, and the soil around the piles is almost virtual soil, which will cause large settlement and negative friction on the piles. , seriously reducing the bearing capacity of the pile
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[0011] The construction procedure of the present invention is that the pile 1 under the foundation of the construction groove is to the design elevation after the field is leveled, and then the pile cap 2 is constructed, and the ground 3 to 4 meters deep under the field leveling elevation is treated with normal pressure spray grout after the construction of the cap 2 is completed. Backfill soil 3. The backfill soil 4 on the upper part of the field level elevation and the surrounding retaining wall 5 have been cancelled.
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The invention discloses a construction method for decomposing a grading high-rise pile cap. A pipe (1) based on a decomposer is constructed up to the ground elevation of a bearing platform at a time. The bearing platform (2) of the pile foundation is constructed in advance before secondary backfill is made, and then back fill (3) under the ground elevation of field plating is treated. The method has simple configuration, low cost, easy implementation, can solve greatly construction difficulty when being applied to aluminium industry fractional decomposition, shortens duration of a project, and reduces the investment.
Description
Technical field: [0001] The invention relates to a construction method of an alumina decomposition tank, in particular to a construction method of a high pile cap of a decomposition tank. Background technique: [0002] In the alumina process flow, the decomposition and classification are composed of a series of decomposition tanks with different elevations at the bottom of the tank. According to this special requirement, a large amount of backfill soil needs to be backfilled on the leveled site to form a higher slope. , the general slope length is about 300 meters, the slope width is 42 meters, and the slope height is 0-9 meters. The load of the decomposition tank is very large, the load of a single decomposition tank is about 10,000 tons, and the diameter of the decomposition tank is generally 15 meters. Generally speaking, the foundation of the decomposition tank can only be seated on the bedrock to meet the design requirements. However, due to the complexity of geologica...
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Inventor 骆文龙高晰
Owner GUIYANG AL-MG DESIGN & RES INST
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