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Permanent rigid cement soil enclosure wall for foundation pit and construction method thereof

A foundation pit enclosure, cement-soil technology, applied in water conservancy engineering, infrastructure engineering, excavation and other directions, can solve the problems of prolonging the construction period of the building and complicated construction steps, and achieve the effect of shortening the construction period and reducing the construction steps.

Inactive Publication Date: 2016-11-16
DONGTONG ROCK SOIL SCI & TECH HANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current construction method of combining the foundation pit enclosure of the temporary measures with the permanent building foundation pit side wall ensures the strength of the building foundation pit side wall, the construction steps are complicated and the construction period is prolonged.

Method used

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  • Permanent rigid cement soil enclosure wall for foundation pit and construction method thereof
  • Permanent rigid cement soil enclosure wall for foundation pit and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: as figure 1 , figure 2 As shown, a cement-soil rigid wall for permanent foundation pit enclosure includes a cement-soil diaphragm wall 1 and a steel composite support structure 2 inserted in the cement-soil diaphragm wall.

[0026] The section steel combined support structure includes a number of vertical section steels 21 arranged in sequence along the length direction of the cement-soil continuous wall, and two adjacent vertical section steels are connected by a buckle connection structure 22 . The vertical section steel is H section steel. The vertical section steel is set vertically. An accommodating cavity 3 with upper and lower ends open is formed between the webs 211 of two adjacent vertical section steels. The surroundings of the accommodating cavity are closed. The accommodating cavity is filled with cement soil.

[0027] The buckle connection structure consists of a vertical slot 221 arranged on one vertical section steel and a vertical ins...

Embodiment 2

[0031] Embodiment 2, a construction method of a permanent foundation pit enclosure cement-soil rigid wall (the specific structure of the permanent foundation pit enclosure cement-soil rigid wall in this embodiment refers to Example 1), which includes the following steps in turn:

[0032] First, construct a cement-soil continuous wall with a set length along the wall-building direction in the foundation soil layer. In the present embodiment, the set length of the cement-soil continuous wall is 8-12 meters.

[0033] Second, insert the vertical section steel into the cement-soil diaphragm wall one by one along the length direction of the cement-soil diaphragm wall, and when the vertical section steel is inserted into the cement-soil diaphragm wall, the adjacent two vertical sections are connected by a buckle connection structure. Connection, so as to form a continuous steel wall in the cement-soil continuous wall.

[0034] The specific construction process of this step is as fol...

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Abstract

The invention discloses a permanent rigid cement soil enclosure wall for a foundation pit and a construction method thereof, and aims at effectively decreasing the construction steps and reducing the building construction period on the premise that the intensity of a foundation pit enclosure and the permanent sidewalls of a building foundation pit cannot be influenced. The permanent rigid cement soil enclosure wall for the foundation pit comprises a continuous cement-soil wall, and a combined profile steel supporting structure which is inserted into the continuous cement-soil wall, wherein the combined profile steel supporting structure comprises a plurality of vertical profile steels which are sequentially arranged and distributed; every two adjacent vertical profile steels are connected through an inserting buckle connecting structure. The construction method of the permanent rigid cement enclosure wall for the foundation pit comprises the following steps: 1, constructing a continuous cement-soil wall section with set length; 2, inserting each vertical profile steel into the continuous cement-soil wall, and connecting the every two adjacent vertical profile steels through the inserting buckle connecting structure; and 3, returning to step 1 to continuously construct.

Description

technical field [0001] The invention relates to the field of foundation pit enclosure, in particular to a permanent foundation pit enclosure cement-soil rigid wall and a construction method thereof. Background technique [0002] For foundation pit construction of buildings or structures, the foundation pit enclosure is generally carried out first, and then excavated. The current foundation pit enclosure often adopts the combination of column piles and water-stop curtains, or the method of cement-soil mixing piles (usually some intermittently distributed steels are inserted on the cement-soil mixing piles); but these forms of foundation Pit enclosures are temporary measures, which are transitional measures for foundation pits of construction buildings or structures. [0003] After the foundation pit is excavated to the bottom, it is necessary to carry out the construction of the side wall of the building foundation pit in the foundation pit. The side wall of the building fou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D29/02
CPCE02D17/04E02D29/02
Inventor 胡焕胡琦张治纯邓以亮
Owner DONGTONG ROCK SOIL SCI & TECH HANGZHOU
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