CN115162347A - Deep foundation pit pipe network construction process - Google Patents
Deep foundation pit pipe network construction process Download PDFInfo
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- CN115162347A CN115162347A CN202211027355.0A CN202211027355A CN115162347A CN 115162347 A CN115162347 A CN 115162347A CN 202211027355 A CN202211027355 A CN 202211027355A CN 115162347 A CN115162347 A CN 115162347A
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- slope
- foundation pit
- level
- slope surface
- deep foundation
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009412 basement excavation Methods 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 239000003673 groundwater Substances 0.000 claims description 6
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 5
- 235000011613 Pinus brutia Nutrition 0.000 claims description 5
- 241000018646 Pinus brutia Species 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/08—Restraining of underground water by employing open ditches arranged below the level of the water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0071—Wood
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Sewage (AREA)
Abstract
The invention relates to the field of municipal engineering, in particular to a deep foundation pit pipe network construction process, which comprises the following steps of preparing deep foundation pit excavation construction, carrying out slope excavation to form a primary slope surface to form a primary side slope foot and a slope platform, excavating a secondary slope surface, and arranging a drainage ditch at the bottom of the secondary slope surface; and (4) hanging net spraying concrete on the first-level slope surface, the slope placing platform and the second-level slope surface, excavating the groove, laying a pipeline, and backfilling the groove. The invention has simple and operable process and high construction efficiency.
Description
Technical Field
The invention relates to the field of municipal engineering, in particular to a deep foundation pit pipe network construction process.
Background
With the continuous promotion of the development of modern cities, the construction industry is rapidly developed, the construction scale of engineering projects is larger and larger, and the construction technology for deep foundation pit support in the construction of the construction projects has higher requirements.
The foundation pit engineering in China is mainly characterized by the following points: as the floors of the current building are gradually heightened, the depth of the foundation pit is gradually deepened, the area of the foundation pit is increased along with the increase of the building difficulty, and the difficulty of a supporting system is increased; under the condition of encountering a soft soil layer, the excavation of the foundation pit generates settlement and displacement, and serious potential safety hazards are generated on adjacent buildings, municipal facilities and pipelines of water feeding, water discharging, in-store, communication and the like of surrounding underground water; traditional foundation ditch construction utilizes pipe jacking construction technology, and this technique construction cycle is long, and application scope is little, and rainfall and pile noon on the foundation ditch edge all can influence its stability, in adjacent field construction, processes such as pile, excavation and basic concrete placement can restrict each other and influence, and the coordination work degree of difficulty also can increase thereupon.
Disclosure of Invention
In order to solve the technical problems, the invention provides a deep foundation pit slope-making construction process, which aims to solve the problems in the background technology.
The invention adopts the following technical scheme:
a deep foundation pit pipe network construction process is carried out according to the following steps:
s1, deep foundation pit excavation construction preparation: positioning and setting out the position of the foundation pit on the ground, and determining the thickness of a soil layer, the thickness of a gravel layer, the groundwater level elevation of the gravel layer and the range of a groundwater area;
s2, excavating the earthwork of the side slope support section into a side slope in a layered and segmented manner by adopting machinery, excavating a primary slope surface along an opening at the top of the slope, forming a primary side slope toe and a slope platform at the bottom of the primary slope surface,
s3, placing a slope along the top of the second-level slope to excavate a second-level slope, and arranging a drainage ditch at the bottom of the second-level slope;
s4, respectively arranging drain holes on the first-stage slope surface and the second-stage slope surface, and hanging nets on the first-stage slope surface, the slope releasing platform and the second-stage slope surface to spray concrete;
s5, excavating the groove according to a drawing related to groove excavation;
s6, when the trench is excavated to be close to the tail sound, preparing a pipeline foundation quickly, paving broken stones quickly and pouring a concrete foundation quickly;
and S7, laying a pipeline after the concrete in the groove reaches the strength, and then backfilling the groove.
Compared with the prior art, the invention has the beneficial effects that:
the invention abandons the traditional mature pipe-jacking construction technology, and utilizes the mode of combining slope-releasing excavation and spray protection for construction, thereby not only saving the construction period, but also saving the construction cost.
Further, the invention adopts the following preferable scheme:
the slope ratio of the first-level slope is 1.05, and the slope ratio of the second-level slope is 1.
And the region of the slope top platform, which is close to the opening line, is also provided with a catch basin and a slope, and the catch basin is inclined from the opening line to the catch basin and is connected with a rainwater drainage system outside the foundation pit.
When the second-level slope surface is in a slope-laying state, the anchor spraying and net hanging are carried out, and a plurality of inclined pine piles are arranged from top to bottom along the second-level slope surface.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
in the figure: a top of slope platform 1; a first-level slope surface 2; a slope-releasing platform 3; a secondary slope surface 4; a pine pile 5; a drainage ditch 6; a water discharge hole 7; and a catch basin 8.
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific embodiments.
A deep foundation pit pipe network construction process comprises the following steps:
s1, deep foundation pit excavation construction preparation: and positioning and setting out the position of the foundation pit on the ground, and determining the thickness of the soil layer, the thickness of the gravel layer, the groundwater level elevation of the gravel layer and the range of the groundwater area.
S2, a catch basin 8 is further arranged in the area, close to the opening line, of the slope top platform 1, the slope is arranged, the catch basin 8 is inclined from the opening line, and the catch basin 8 is connected with a rainwater drainage system outside the foundation pit; adopt machinery to dig out the side slope with the earthwork layering segmentation of side slope support section, put the slope at the top of a slope along the opening and dig out the domatic 2 of one-level, form one-level side slope toe and put sloping platform 3 in the domatic 2 bottoms of one-level, the domatic 2 slope ratio of putting of one-level is 1.05.
S3, put the slope along the top of the slope of second grade side slope and excavate the domatic 4 of second grade, the domatic 4 of second grade is put the slope ratio and is 1.5 to be provided with escape canal 6 in the domatic 4 bottom of second grade, still the interval is provided with the sump pit on the escape canal 6, takes out water to the foundation ditch outside through the immersible pump in the sump pit.
S4, arranging drain holes 7 on the first-stage slope surface 2 and the second-stage slope surface 4 respectively, and hanging nets on the first-stage slope surface 2, the slope-releasing platform 3 and the second-stage slope surface 4 to spray concrete; a plurality of inclined pine piles 5 are arranged from top to bottom along the second-stage slope surface 4, and the included angle between each pine pile 5 and the horizontal plane is 20 degrees.
And S5, excavating the groove according to a drawing related to groove excavation.
S6, when the trench is excavated to be close to the tail sound, preparing a pipeline foundation quickly, paving broken stones quickly and pouring a concrete foundation quickly.
And S7, laying a pipeline after the concrete in the groove reaches the strength, and then backfilling the groove.
The method has the advantages of simple process, safety, reliability and strong operability, can flexibly adapt to the foundation with complex geology, and effectively overcomes the defects of the traditional deep foundation pit excavation method.
The above description is only for the specific embodiment of the present invention, but the protection of the present invention is not limited thereto, and all equivalent changes or substitutions to the technical features of the present invention that can be made by those skilled in the art are included in the protection scope of the present invention.
Claims (4)
1. A deep foundation pit pipe network construction process is characterized by comprising the following steps:
s1, deep foundation pit excavation construction preparation: positioning and setting out the position of the foundation pit on the ground, and determining the thickness of a soil layer, the thickness of a gravel layer, the groundwater level elevation of the gravel layer and the range of a groundwater area;
s2, excavating the earthwork of the side slope support section into a side slope in a layered and segmented manner by adopting machinery, excavating a first-stage slope surface by releasing the slope along an opening at the top of the slope, forming a first-stage side slope toe and a slope releasing platform at the bottom of the first-stage slope surface,
s3, placing a slope along the top of the second-level slope to excavate a second-level slope, and arranging a drainage ditch at the bottom of the second-level slope;
s4, arranging drain holes on the secondary slope surface, and hanging nets on the primary slope surface, the slope releasing platform and the secondary slope surface to spray concrete;
s5, excavating the groove according to a drawing related to groove excavation;
s6, when the trench is excavated to be close to the tail sound, preparing a pipeline foundation quickly, paving broken stones quickly and pouring a concrete foundation quickly;
and S7, laying a pipeline after the concrete in the groove reaches the strength, and then backfilling the groove.
2. The deep foundation pit pipe network construction process according to claim 1, wherein: the slope ratio of the first-level slope surface is 1.05, and the slope ratio of the second-level slope surface is 1.
3. The deep foundation pit pipe network construction process according to claim 1, wherein: the region of the slope top platform close to the opening line is also provided with a catch basin and a slope, and the catch basin is connected with a rainwater drainage system outside the foundation pit from the slope direction of the opening line to the catch basin.
4. The deep foundation pit pipe network construction process according to claim 1, wherein: when the second-level slope surface is in a slope-laying state, the anchor spraying and net hanging are carried out, and a plurality of inclined pine piles are arranged from top to bottom along the second-level slope surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211027355.0A CN115162347A (en) | 2022-08-25 | 2022-08-25 | Deep foundation pit pipe network construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211027355.0A CN115162347A (en) | 2022-08-25 | 2022-08-25 | Deep foundation pit pipe network construction process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115162347A true CN115162347A (en) | 2022-10-11 |
Family
ID=83480693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211027355.0A Pending CN115162347A (en) | 2022-08-25 | 2022-08-25 | Deep foundation pit pipe network construction process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115162347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118065406A (en) * | 2024-04-22 | 2024-05-24 | 北京建工四建工程建设有限公司 | Sinking type temporary slope building for easily-degraded slope |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299899A (en) * | 1996-05-15 | 1997-11-25 | Sumitomo Rubber Ind Ltd | Water shielding structure |
| KR20030097085A (en) * | 2002-06-19 | 2003-12-31 | 이윤주 | A Precast Concrete Block for Retaining-Wall and Construction Method of Retaining-Wall for using Top-down Method |
| CN104213564A (en) * | 2014-09-04 | 2014-12-17 | 中建四局第六建筑工程有限公司 | Excavation slope supporting structure and construction method thereof |
| CN204080822U (en) * | 2014-09-04 | 2015-01-07 | 中建四局第六建筑工程有限公司 | A kind of foundation pit stope support structure |
| CN105696607A (en) * | 2016-04-05 | 2016-06-22 | 中铁隧道勘测设计院有限公司 | Supporting manner for fully-sandy bed dry dock slope |
-
2022
- 2022-08-25 CN CN202211027355.0A patent/CN115162347A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09299899A (en) * | 1996-05-15 | 1997-11-25 | Sumitomo Rubber Ind Ltd | Water shielding structure |
| KR20030097085A (en) * | 2002-06-19 | 2003-12-31 | 이윤주 | A Precast Concrete Block for Retaining-Wall and Construction Method of Retaining-Wall for using Top-down Method |
| CN104213564A (en) * | 2014-09-04 | 2014-12-17 | 中建四局第六建筑工程有限公司 | Excavation slope supporting structure and construction method thereof |
| CN204080822U (en) * | 2014-09-04 | 2015-01-07 | 中建四局第六建筑工程有限公司 | A kind of foundation pit stope support structure |
| CN105696607A (en) * | 2016-04-05 | 2016-06-22 | 中铁隧道勘测设计院有限公司 | Supporting manner for fully-sandy bed dry dock slope |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118065406A (en) * | 2024-04-22 | 2024-05-24 | 北京建工四建工程建设有限公司 | Sinking type temporary slope building for easily-degraded slope |
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