In-situ protection construction method of pipeline above foundation pit

A construction method and pipeline technology, applied in the direction of pipeline protection, pipeline laying and maintenance, pipes/pipe joints/pipe fittings, etc., can solve problems such as lack of mature technical solutions, and achieve the effect of avoiding settlement deformation and achieving in-situ protection.

Inactive Publication Date: 2014-01-01
CHINA CONSTR SIXTH ENG DIV CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

What kind of structural form can not only ensure that the settlement and deformation of the pipeline meet the requirements,

Method used

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  • In-situ protection construction method of pipeline above foundation pit
  • In-situ protection construction method of pipeline above foundation pit
  • In-situ protection construction method of pipeline above foundation pit

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[0017] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples, and detailed descriptions are as follows with accompanying drawings:

[0018] See Figure 1 ~ Figure 3 , A construction method for in-situ protection of pipelines above the foundation pit, including the following steps:

[0019] 1) Demolition of the pavement: Demolition of the concrete pavement on the upper part of the pipeline box culvert 8 before the construction of the foundation pit;

[0020] Since the pipeline box culvert 8 is generally buried below the ground, its upper part is generally hardened concrete pavement. Before construction, all the upper concrete pavement of the pipeline box culvert 8 needs to be destroyed and transported to a designated location.

[0021] 2) Steel column 5: According to the design position of the truss 3, two steel columns 5 are built corresponding to the fulcrums at both ends of each truss 3, and a horiz...

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Abstract

The invention discloses an in-situ protection construction method of a pipeline above a foundation pit. The in-situ protection construction method comprises the steps of (1) cracking a pavement; (2) driving two steel uprights corresponding to each of support point parts on the two ends of each truss, and erecting a middle bearing beam arranged horizontally over the two steel uprights; (3) excavating earth; (4) precipitating; (5) erecting a truss over the two opposite middle bearing beams, and arranging upper bearing beams on the top of the truss; (6) wrapping the four sides of a pipeline box culvert with steel plates to form a box culvert strengthening covering barrel, supporting the bottom of the covering barrel by using lower bearing beams, wherein the lower bearing beams correspond to the upper bearing beams one to one; and (7) connecting the lower bearing beams and the upper bearing beams through chain blocks and steel wire ropes. The in-situ protection construction method provided by the invention is capable of avoiding sedimentation deformation of the pipeline box culvert in the construction process of the foundation pit and thus in-situ protection of the pipeline is realized. The in-situ protection construction method is capable of ensuring that the sedimentation deformation value of an important pipeline without moving and modifying conditions within the construction range of the foundation pit does not exceed an allowable value and influence on the support structure and the main body structure of the foundation pit is within a controllable range.

Description

technical field [0001] The invention relates to an in-situ protection construction method for pipelines, in particular to an in-situ protection construction method for pipelines above foundation pits. Background technique [0002] At present, a large number of shallow-buried municipal pipelines will be encountered during the construction of foundation pits for rail transit and housing construction in urban areas. The construction of the main structure is currently mainly solved by relocation, that is, temporarily relocating the pipeline from the construction-affected area to outside the construction area, and then relocating the pipeline back to its original location after the foundation pit construction is completed. However, when the site around the foundation pit is narrow or the pipeline is very important and sensitive to deformation and settlement, etc., it is necessary to protect the pipeline in situ. There is no mature technical solution for the structural form that ...

Claims

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Application Information

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IPC IPC(8): F16L57/00F16L1/06
CPCF16L1/11
Inventor 柴艳飞安文河徐利任富芝
Owner CHINA CONSTR SIXTH ENG DIV CORP
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