CN219604375U

CN219604375U - Pipeline foundation pit supporting structure

Info

Publication number: CN219604375U
Application number: CN202320241512.1U
Authority: CN
Inventors: 孙安; 周炜峙; 陈位洪; 潘奕
Original assignee: Architectural Design and Research Institute of Guangdong Province
Current assignee: Architectural Design and Research Institute of Guangdong Province
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-08-29
Anticipated expiration: 2033-02-17

Abstract

The utility model provides a pipeline foundation pit supporting structure, which comprises the following components: the concrete walls are built on the left side and the right side of the foundation pit, a plurality of support partition walls which are distributed side by side at intervals are transversely arranged between the tops of the concrete walls, lifting ropes for hanging the unknown underground pipelines can be arranged on the support partition walls, and a concrete bottom plate is poured between the bottoms of the concrete walls. The pipeline foundation pit supporting structure is reasonable in design, good in supporting effect and stable in structure, is convenient for protecting an unknown underground pipeline, can adopt a mode of supporting while excavating, simultaneously excavates concrete walls on two sides of a construction pipeline through a reverse construction method, and simultaneously sets a supporting partition wall between the concrete walls on two sides at intervals, so that the concrete walls on two sides and the supporting partition wall form a better stable structure system. If the dug unknown underground pipeline is encountered, the unknown underground pipeline can be lifted on the supporting partition wall by using the lifting rope, and the underground pipeline is dug down continuously after the corresponding pipeline protection is finished, so that the construction safety can be ensured.

Description

Pipeline foundation pit supporting structure

Technical Field

The utility model relates to the technical field of building construction, in particular to a pipeline foundation pit supporting structure.

Background

Due to the limitation of the existing geophysical prospecting technology, underground pipelines cannot accurately detect. Sometimes such underground pipelines are very likely to be high risk pipelines such as high voltage cables, or pipelines of high importance such as oil pipelines, military cables. If a new pipeline is required to be laid nearby the site, such as a conventional steel sheet pile support is adopted, the steel sheet pile is likely to break the cable or the pipeline in the driving process, the light person causes great economic loss, the heavy person generates safety accidents, and casualties and great social adverse effects are caused. For this reason, it is a difficult problem to lay down newly built buried pipelines in the presence of unknown underground pipelines.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a pipeline foundation pit supporting structure which has good supporting effect and stable structure, is convenient for protecting an unknown underground pipeline, can adopt a form of supporting while excavating, and is convenient for construction.

In order to achieve the above technical solution, the present utility model provides a supporting structure for a foundation pit of a pipeline, including: the concrete walls are built on the left side and the right side of the foundation pit, a plurality of support partition walls which are distributed side by side at intervals are transversely arranged between the tops of the concrete walls, lifting ropes for hanging the unknown underground pipelines can be arranged on the support partition walls, and a concrete bottom plate is poured between the bottoms of the concrete walls.

In the technical scheme, during actual construction, the concrete walls on two sides of the construction pipeline are excavated by adopting an excavation supporting mode, and meanwhile, the support partition walls are arranged between the concrete walls on two sides at intervals, so that a better stable structure system is formed by the concrete walls on two sides and the support partition walls. In the manual excavation process, if the excavated unknown underground pipeline is encountered, the unknown underground pipeline can be lifted on the supporting partition wall by using the lifting rope, the underground pipeline is continued to be excavated after the corresponding pipeline protection is finished until all the unknown underground pipelines in the excavation depth range are excavated, then, the work of laying the pipeline and the like can be carried out after the bottom sealing of the concrete bottom plate is poured, and the construction of the supporting system is finished.

Preferably, a plurality of grouting holes are formed in the outer side of the concrete wall, and underground grouting concrete blocks are correspondingly poured at the bottom of each grouting hole. In the actual construction process, in the concrete wall overexcavation process, if the underground water is very small or can be controlled, the concrete wall is treated in an open row mode. If the soil quality is poor, the foundation pit is backfilled firstly, grouting holes are drilled on the outer side of the concrete wall at the position where drilling can be guaranteed, soil is solidified in advance through the underground grouting concrete blocks, water is stopped when soft soil is treated, and the underground grouting concrete blocks are excavated again after the grouting is completed.

Preferably, the concrete wall is a section layer concrete wall constructed by adopting a reverse construction method, the thickness of each section of concrete wall is 0.3m-0.5m, the height of each section of concrete wall is 0.6-1.0m, the section layer concrete wall is good and reasonable in stress, the deformation of the enclosure structure is small, the structure is stable, and the concrete wall is suitable for excavation and support.

Preferably, the distance between the adjacent supporting partition walls is 4m, and the distance between the adjacent supporting partition walls is not too large, otherwise, a good stable structure is difficult to form between the concrete wall and the supporting partition walls, and the suspension of the follow-up unknown underground pipeline is also not facilitated; the distance between adjacent supporting partition walls is not too small, otherwise, the cost is increased, and the subsequent construction requiring pipeline laying is not facilitated.

The pipe foundation pit supporting structure provided by the utility model has the beneficial effects that: the pipeline foundation pit supporting structure is reasonable in design, good in supporting effect, stable in structure, convenient to protect an unknown underground pipeline, capable of adopting a supporting mode while excavating, and convenient to construct. During actual construction, the concrete walls on two sides of the construction pipeline are excavated by adopting an excavation supporting mode, and meanwhile, the support partition walls are arranged between the concrete walls on two sides at intervals, so that a better stable structure system is formed by the concrete walls on two sides and the support partition walls. In the manual excavation process, if the excavated unknown underground pipeline is encountered, the unknown underground pipeline can be lifted on the supporting partition wall by using the lifting rope, the underground pipeline is continued to be excavated after the corresponding pipeline protection is finished until all the unknown underground pipelines in the excavation depth range are excavated, then, the work such as pipeline laying can be carried out after the bottom sealing of the concrete bottom plate is poured, and the construction of the supporting system is finished, so that the construction safety can be ensured.

Drawings

Fig. 1 is a side sectional view of the present utility model.

Fig. 2 is a top view of the present utility model.

In the figure: 1. a concrete wall; 2. grouting concrete blocks underground; 3. grouting holes; 4. supporting the partition wall; 5. a hanging rope; 6. an unknown underground pipeline; 7. a pipeline needs to be paved; 8. a concrete bottom plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.

Examples: a kind of pipeline foundation ditch supporting structure.

Referring to fig. 1 to 2, a pipe foundation pit supporting structure includes: the concrete walls 1 are built on the left side and the right side of the foundation pit, the concrete walls 1 are section layer concrete walls constructed by adopting a reverse construction method, the thickness of each section of concrete wall is 0.3-0.5m, the height of each section of concrete wall is 0.6-1.0m, the section layer concrete walls are well and reasonably stressed, the deformation of the enclosure structure is small, the structure is stable, the concrete walls are suitable for supporting while excavating, a plurality of support partition walls 4 which are distributed side by side at intervals are transversely arranged between the tops of the concrete walls 1, the distance between every two adjacent support partition walls 4 is 4m, the distance between every two adjacent support partition walls 4 is not too large, otherwise, a good stable structure is difficult to form between the concrete walls 1 and the support partition walls 4, and the suspension of a follow-up unknown underground pipeline 6 is also unfavorable; the distance between the adjacent supporting partition walls 4 is not too small, otherwise, the cost is increased, the subsequent construction requiring laying of the pipeline 7 is also not facilitated, the supporting partition walls 4 can be provided with hanging ropes 5 for hanging the unknown underground pipelines, the hanging ropes 5 are used for hanging the unknown underground pipelines 6, the unknown underground pipelines 6 in the subsequent construction are protected, and a concrete bottom plate 8 is poured between the bottoms of the concrete walls 1. A plurality of grouting holes 3 can be formed in the outer side of the concrete wall 1, and underground grouting concrete blocks 4 are correspondingly poured at the bottom of each grouting hole 3. In the actual construction process, in the concrete wall 1 overexcavation process, if the underground water is very small or can be controlled, the concrete wall is treated in an open row mode. If the soil quality is poor, the foundation pit is backfilled firstly, then grouting holes 3 are drilled on the outer side of the concrete wall 1 at the position where drilling can be ensured, soil is cured in advance through the underground grouting concrete blocks 4, water is stopped while soft soil is treated, and the construction safety can be ensured by re-excavating after the underground grouting concrete blocks 4 are formed after grouting is finished.

The pipeline foundation pit supporting structure is reasonable in design, good in supporting effect, stable in structure, convenient to protect an unknown underground pipeline 6, capable of adopting a supporting mode while excavating, and convenient to construct. During actual construction, the concrete walls 1 on two sides of a pipeline are constructed by adopting a mode of excavating and supporting simultaneously, the thickness of the concrete walls 1 is 0.3-0.5m according to the soil property, the height is controlled to be 0.8m, meanwhile, a supporting partition wall 4 is arranged between the concrete walls 1 on two sides every 4m, and the elevation of the bottom of the supporting partition wall 4 is required to be higher than the height of a top standard of the pipeline by more than 0.5 m. In this way, the concrete walls 1 on both sides form a better stable structural system with the supporting partition walls 4. In the manual excavation process, if the excavated unknown underground pipeline 6 is encountered, the unknown underground pipeline 6 can be lifted on the supporting partition wall 4 by using the lifting rope 5, the excavation is continued after the corresponding pipeline protection is finished until all the unknown underground pipelines within the excavation depth range are excavated, then, the pipeline laying work and other works can be carried out after the bottom sealing of the concrete bottom plate 8 is poured, and the construction of the supporting system is finished. In the process of the concrete wall 1 overbreaking, if the underground water is very small or can be controlled, the concrete wall is treated in an open row mode. If the soil quality is poor, the foundation pit is backfilled firstly, then grouting holes 3 are drilled on the outer side of the concrete wall 1 at the position where drilling can be ensured, soil is cured in advance through the underground grouting concrete blocks 4, water is stopped while soft soil is treated, and the construction safety can be ensured by re-excavating after the underground grouting concrete blocks 4 are formed after grouting is finished.

The foregoing is a preferred embodiment of the present utility model, but the present utility model should not be limited to the embodiment and the disclosure of the drawings, so that the equivalents and modifications can be made without departing from the spirit of the disclosure.

Claims

1. The utility model provides a pipeline foundation ditch supporting construction which characterized in that includes: the concrete walls are built on the left side and the right side of the foundation pit, a plurality of support partition walls which are distributed side by side at intervals are transversely arranged between the tops of the concrete walls, lifting ropes for hanging the unknown underground pipelines can be arranged on the support partition walls, and a concrete bottom plate is poured between the bottoms of the concrete walls.

2. The pipe foundation pit support structure of claim 1, wherein: a plurality of grouting holes are formed in the outer side of the concrete wall, and underground grouting concrete blocks are correspondingly poured at the bottom of each grouting hole.

3. The pipe foundation pit support structure of claim 1, wherein: the concrete wall is a section layer concrete wall constructed by adopting a reverse construction method, the thickness of each section of concrete wall is 0.3m-0.5m, and the height of each section of concrete wall is 0.6-1.0m.

4. The pipe foundation pit support structure of claim 1, wherein: the distance between adjacent supporting partition walls is 4m.