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Anti-floating structure and anti-floating check calculation method of underground groove-shaped body

A technology of underground tanks and shapes, applied in underwater structures, calculations, infrastructure engineering, etc., can solve problems such as uneconomical anti-floating settings, and achieve good construction convenience and good economical effects

Active Publication Date: 2018-04-10
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anti-floating configuration of the trough structure with good foundation conditions is uneconomical, so it is necessary to propose a new anti-floating structure for underground troughs to meet the anti-floating requirements of good foundation conditions, and it has the characteristics of good anti-floating effect, economy, and environmental protection. At the same time, the corresponding anti-floating calculation method is proposed to facilitate the application of engineering

Method used

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  • Anti-floating structure and anti-floating check calculation method of underground groove-shaped body
  • Anti-floating structure and anti-floating check calculation method of underground groove-shaped body
  • Anti-floating structure and anti-floating check calculation method of underground groove-shaped body

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Embodiment

[0068] Select the shape structure of an underground trough as the calculation prototype. The length, width, and height dimensions of the flange structure in this structure are: 3m, 1.5m, and 1.0m respectively, and the setting distance is 4m. The cantilever height is 6m, the floor thickness is 1.0m, the floor width is 15m, the groundwater level is 1m below the ground, the foundation soil is silty clay, and the bulk density is 19kN / m 3 , cohesion C = 25kPa, internal friction angle The section length of the trough body is 20m.

[0069] The anti-floating calculation process is as follows:

[0070] 1. Calculation of the groundwater buoyancy of the trough body 2 in the segment:

[0071] f fk = γ W ×A W × L c =1.0×1020×20×9.8=19992(kN);

[0072] 2. Calculation of the gravity of the trough body 2 in the segment:

[0073] G k = γ C ×A C × L = 2.6 × 29 × 20 × 9.8 = 14778.4 (kN);

[0074] 3. Calculation of the shear force of the segmental inner flange structure 1, and calcul...

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Abstract

The invention discloses an anti-floating structure and an anti-floating check calculation method of an underground groove-shaped body. The anti-floating problem of a good foundation underground groove-shaped body structure is effectively solved, and good economy and construction convenience are achieved. The anti-floating structure structurally comprises the groove-shaped body which is arranged inan excavated underground foundation pit in sections, flange structures which are spaced in the longitudinal direction are symmetrically arranged on the two sides of the bottom of the groove-shaped body, and the flange structures which are in rigid connection with the groove-shaped body transversely extend and are buried in soil bodies outside the two sides of the groove-shaped body.

Description

technical field [0001] The invention relates to geotechnical engineering, in particular to an anti-floating structure of an underground groove body and an anti-floating checking calculation method thereof. Background technique [0002] Underground trough structures are used more and more in engineering practice, especially in urban underpass projects. When the underground trough is set below the groundwater level, the anti-floating design of the underground trough structure must be considered. Usually The following is to install bored cast-in-place piles at the bottom of the trough structure as an anti-floating force structure. Since the bored piles are rigidly connected to the trough-shaped structure, the installed bored piles must bear the role of the upper trough-shaped structure and loads, resulting in The punching and shear resistance requirements of the trough-shaped structure floor and bored piles are increased, so the trough-shaped structure floor needs to be thicken...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D31/12G06F17/50
CPCE02D29/045E02D31/12G06F30/13Y02A90/30
Inventor 姚裕春赵青海刘洋唐第甲袁碧玉刘勇黄波
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD