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Basement support construction method

By setting up frozen soil walls and frozen soil arches at the outer edge of the basement, combined with computer numerical simulation and thermal insulation measures, the problem of basement safety and earth pressure after omitting internal supports was solved, and the construction progress and economic benefits were improved. At the same time, freezing energy consumption and frost heave effects are reduced.

Inactive Publication Date: 2018-01-19
HENAN MINING IND CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a basement support construction method to solve the problem of basement safety after omitting inner support

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] A basement is 67m long, 48m wide, and 6.8m deep. The supporting piles adopt bored piles with a diameter of 1.4m. Center 1.1m. The number of freezing holes is 132, and the distance between freezing tubes is 1.05m. The pressure relief holes are outside the freezing holes, and each freezing hole is correspondingly arranged with two pressure relief holes.

[0020] As shown in the figure, in this embodiment, the top of the frozen soil wall 1 and the frozen soil arch foot 2 is provided with a top pressure beam 3, and the top pressure beam 3 is welded by two channel steels, and an auxiliary beam is set at a position 0.8 to 1 m away from the central axis of the frozen soil wall 1. The beam 4 and the auxiliary beam 4 adopt channel steel, the auxiliary beam 4 is supported on the engineering pile 7, the elevation of the top of the auxiliary beam 4 is the same as that of the top of the frozen soil wall 1, the steel strand support 5 is set on the top of the auxiliary beam 4, and th...

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Abstract

The invention discloses a basement support construction method. The basement support construction method is characterized in that cast-in-situ bored piles are arranged on the outer edge of a basement and taken as support piles, a frozen soil wall is arranged in the position 1-1.3 m away from the outer sides of the cast-in-situ bored piles, pressure releasing holes are formed in positions 50-60 cm away from outer sides of freezing holes, each freezing hole corresponds to two pressure releasing holes, and the diameter of each pressure releasing hole is 25-30 cm; the frozen soil wall is equipped with frozen soil arch feet at intervals of 8-12 m, the frozen soil wall is equipped with freezing pipes according to soil texture, and for mucky soil, the interval of adjacent freezing pipes is larger than or equal to 0.9 m and smaller than 1 m; for floury soil, the interval of adjacent freezing pipes is larger than or equal to 1 m and smaller than 1.05 m; for clay, the interval of adjacent freezing pipes is larger than or equal to 1.05 m and smaller than or equal to 1.1 m. the frozen soil wall is equipped with horizontal prestress devices every three spans; a coping beam is arranged at tops of the frozen soil wall and the frozen soil arch feet.

Description

technical field [0001] The invention relates to a basement support construction method, which is suitable for the field of building construction. Background technique [0002] At present, there are many types of basement support, and various support schemes are becoming more and more mature. Different basement support systems are suitable for different situations. The selection should follow the principles of "safety, economy, and feasibility". The depth of the basement, the adjacent buildings and road traffic conditions, and the surrounding environment are calculated, and then the final form of enclosure and support is determined after comprehensive technical and economic comparisons. The internal support of the basement will bring great difficulties to the excavation of the basement. If the internal support can be omitted, it will not only speed up the construction progress, but also bring great economic benefits. However, the pressure on the top beam in the basement will...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04
CPCE02D3/115E02D17/04E02D31/14E02D2300/0029
Owner HENAN MINING IND CONSTR GRP CO LTD