CN110847233A - Closed-section steel comprehensive pipe gallery and construction method thereof - Google Patents
Closed-section steel comprehensive pipe gallery and construction method thereof Download PDFInfo
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- CN110847233A CN110847233A CN201911218222.XA CN201911218222A CN110847233A CN 110847233 A CN110847233 A CN 110847233A CN 201911218222 A CN201911218222 A CN 201911218222A CN 110847233 A CN110847233 A CN 110847233A
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- pipe gallery
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- steel pipe
- pit
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 111
- 239000010959 steel Substances 0.000 title claims abstract description 111
- 238000010276 construction Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 11
- 101150054854 POU1F1 gene Proteins 0.000 description 7
- 101100491335 Caenorhabditis elegans mat-2 gene Proteins 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005056 compaction Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 210000001099 axilla Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002023 wood Substances 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
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a steel comprehensive pipe gallery with a closed section and a construction method thereof. The construction method comprises the following steps: digging a foundation pit; laying a foundation cushion layer with a pit at the top in the foundation pit; place steel pipe gallery main part on basic bed course to with the bottom embedding pit of steel pipe gallery main part. According to the invention, the foundation pad layer with the pits at the top is laid in the foundation pit, the bottom of the steel pipe gallery main body is embedded into the pits, and the space below the bottom of the steel pipe gallery main body is filled with the foundation pad layer, so that a flat axillary angle is prevented from being formed between the steel pipe gallery main body and the foundation pad layer, and the backfilling and tamping are convenient.
Description
Technical Field
The invention relates to the technical field of comprehensive pipe galleries, in particular to a closed-section steel comprehensive pipe gallery and a construction method thereof.
Background
The structural form of the steel pipe gallery main body is divided into a closed section form (such as a circle, a pipe arch and the like) and an open section form (such as a circular arch, a high arch and the like), wherein the closed section steel pipe gallery main body is placed on the foundation cushion layer and supported by the foundation cushion layer, as shown in figure 1, because the currently adopted foundation cushion layer 100 is a flat surface, an axillary corner part 200 between the closed section steel pipe gallery main body 3 and the foundation cushion layer 100 is flatter, when the axillary corner part 200 is tamped, even a small tamping machine cannot stretch into the axillary corner part to be tamped, an artificial wooden stick is sometimes adopted to be tamped obliquely, the labor intensity is high, and the construction efficiency is low; the other method is to adopt a 'watertight method' to vibrate and compact the axillary corner part 200, the main principle is that sandy soil has the flowing capacity when the water content reaches a certain degree, and the saturated sandy soil is easy to flow to a place needing to be filled after being vibrated, thereby realizing backfilling, but the 'watertight method' oscillator is adopted to be compact and real-time, a large amount of water needs to be injected, simultaneously, the water content is not easy to control, the flowability is poor when the water content is small, a large amount of backfilling materials are lost when the water content is large, the water content of the soil is too high, the compactness of the soil cannot meet the requirements, the axillary corner part 200 is a key part for backfilling, and the effective support cannot be provided for the steel pipe gallery main body 3 when the backfilling is not.
Disclosure of Invention
The invention aims to provide a closed section steel comprehensive pipe gallery and a construction method thereof, and aims to solve the problem that armpit positions are difficult to backfill and tamp in the prior art.
In order to achieve the purpose, the invention provides a steel comprehensive pipe gallery with a closed section, which comprises a foundation pit, a foundation cushion layer laid in the foundation pit and a steel pipe gallery main body with a closed section, wherein the steel pipe gallery main body is placed on the foundation cushion layer, the top of the foundation cushion layer is provided with a pit, and the bottom of the steel pipe gallery main body is embedded into the pit.
The closed section steel utility tunnel as described above, wherein the shape of the pits matches the shape of the bottom of the steel tunnel body.
The closed-section steel comprehensive pipe rack is characterized in that the inner surfaces of the pits are attached to the bottom surface of the steel pipe rack main body.
The closed-section steel comprehensive pipe rack is characterized in that the inner surfaces of the pits are arc-shaped, and the bottom surface of the steel pipe rack main body is arc-shaped.
The closed-section steel comprehensive pipe rack is characterized in that the steel comprehensive pipe rack body is formed by sequentially connecting a plurality of corrugated steel pipes.
The invention also provides a construction method of the closed section steel comprehensive pipe gallery, which comprises the following steps: digging a foundation pit; laying a foundation cushion layer with a pit at the top in the foundation pit; placing the steel pipe gallery main body on the foundation cushion layer, and embedding the bottom of the steel pipe gallery main body into the concave pit.
The construction method of the closed-section steel comprehensive pipe gallery comprises the steps of tamping the foundation bed course after the foundation bed course is laid in the foundation pit, and then placing the steel pipe gallery main body on the foundation bed course.
The construction method of the closed-section steel comprehensive pipe rack is characterized in that the shape of the pit is matched with the shape of the bottom of the steel pipe rack main body.
The construction method of the closed-section steel comprehensive pipe rack is characterized in that the inner surfaces of the pits are attached to the bottom surface of the steel pipe rack main body.
The construction method of the closed-section steel comprehensive pipe gallery comprises the following steps: will the bottom embedding of steel pipe gallery main part back in the pit, to the soil covering layer is backfilled to the outside of steel pipe gallery main part, until the surface and the nature terrace parallel and level of soil covering layer.
The closed section steel comprehensive pipe gallery and the construction method thereof have the characteristics and advantages that:
1. the foundation pit is arranged, the foundation cushion layer with the pit at the top is laid in the foundation pit, the bottom of the steel pipe gallery main body is embedded into the pit, the space below the bottom of the steel pipe gallery main body is filled with the foundation cushion layer, and a flat axillary angle is prevented from being formed between the steel pipe gallery main body and the foundation cushion layer, so that backfilling and tamping are convenient to carry out, an artificial wood stick is not needed to be used for obliquely tamping, a watertight method is not needed to be adopted for oscillation and compaction, and the problem that the axillary angle part is difficult to backfill and tamp in the prior art is solved;
2. according to the invention, the shape of the pit is designed to be matched with the shape of the bottom of the steel pipe gallery main body, so that the foundation cushion can stably support the steel pipe gallery main body.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1 is a schematic view of a prior art closed section steel utility tunnel;
FIG. 2 is a schematic view of a foundation pit and foundation pad of the present invention;
figure 3 is a schematic view of a closed section steel utility tunnel according to an embodiment of the present invention.
Main element number description:
1. a foundation pit; 2. a base mat layer; 21. a pit; 3. a steel pipe gallery main body;
100. a base mat layer; 200. axillary corner regions; 300. covering a soil layer; w, natural terrace.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 2 and 3, the invention provides a closed section steel comprehensive pipe gallery, which comprises a foundation pit 1, a foundation cushion layer 2 laid in the foundation pit 1, and a steel pipe gallery main body 3 with a closed section and placed on the foundation cushion layer 2, wherein a pit 21 is arranged at the top of the foundation cushion layer 2, the bottom of the steel pipe gallery main body 3 is embedded into the pit 21, so that the space below the bottom of the steel pipe gallery main body 3 is filled with the foundation cushion layer 2, a flat axillary angle between the steel pipe gallery main body 3 and the foundation cushion layer 2 is avoided, the backfilling compaction is convenient, an artificial wooden stick is not needed to be used for obliquely compacting, the oscillation compaction by a watertight method is also not needed, and the problem that the axillary angle part is difficult to be backfilled and compacted in the prior art is solved.
As shown in fig. 2 and 3, in one embodiment, the shape of the dimples 21 matches the shape of the bottom of the steel pipe rack body 3 so that the foundation pad 2 stably supports the steel pipe rack body 3.
As shown in fig. 2 and 3, the inner surfaces of the recesses 21 are further brought into contact with the bottom surface of the steel pipe rack body 3, so that the foundation mat 2 supports the steel pipe rack body 3 more stably. For example, the inner surface of the concave pit 21 is concave arc-shaped, and the bottom surface of the steel pipe rack main body 3 is convex arc-shaped.
Further, the width of the pit 21 is equal to the maximum width of the bottom of the steel pipe rack body 3 to avoid the formation of an axilla between the steel pipe rack body 3 and the foundation mat 2.
Further, the cross-sectional shape of the foundation pit 1 is an inverted trapezoid. However, the present invention is not limited thereto, and the cross-sectional shape of the foundation pit 1 may be other shapes such as a rectangle.
Further, the width of the top of the foundation pad 2 is greater than the width of the top of the pit 21 so that the foundation pad 2 effectively supports the steel pipe gallery body 3.
In one embodiment, the steel pipe gallery body 3 is formed by connecting a plurality of corrugated steel pipes in sequence. For example, a plurality of corrugated steel pipes are connected in series by high-strength bolts.
Further, the cross-sectional shape of the steel pipe gallery body 3 is circular or pipe arch, wherein "pipe arch" means that the steel pipe gallery body 3 is tubular, and the upper part of the steel pipe gallery body 3 is arch-shaped, and the lower part is inverted arch-shaped.
As shown in fig. 2 and 3, the invention also provides a construction method of the closed-section steel comprehensive pipe gallery, which comprises the following steps:
step S100: firstly, digging a foundation pit 1;
step S200: then laying a foundation cushion layer 2 with a pit 21 on the top in the foundation pit 1;
step S300: then place steel pipe gallery main part 3 on basic bed course 2, and with the bottom embedding pit 21 of steel pipe gallery main part 3 in, with utilize basic bed course 2 to fill the space below 3 bottoms of steel pipe gallery main part, avoid forming flat axillary angle between steel pipe gallery main part 3 and the basic bed course 2, thereby conveniently backfill the tamp, need not use artifical stick slant tamp, also need not adopt "watertight method" oscillation closely knit, the axillary angle position that has solved the prior art existence is difficult to backfill the tamp problem.
For example, the steel pipe rack body 3 has a circular or arched cross-sectional shape, and the steel pipe rack body 3 is formed by connecting a plurality of corrugated steel pipes in this order.
As shown in fig. 2 and 3, in one embodiment, in the step S300, after the foundation mat 2 is laid in the foundation pit 1, the foundation mat 2 is tamped, the steel pipe gallery body 3 is placed on the foundation mat 2, and the bottom of the steel pipe gallery body 3 is embedded into the pit 21. This embodiment is earlier with basic bed course 2 tamp the back, places steel pipe gallery main part 3 again, can improve basic bed course 2's support intensity, makes basic bed course 2 support steel pipe gallery main part 3 more stably.
As shown in fig. 3, in one embodiment, the method for constructing the closed-section steel utility tunnel further includes the step S400 of: and backfilling the soil covering layer 300 to the outside of the steel pipe gallery main body 3 until the surface of the soil covering layer 300 is flush with the natural terrace W. As shown in fig. 2 and 3, in one embodiment, the shape of the dimples 21 matches the shape of the bottom of the steel pipe rack body 3 so that the foundation pad 2 stably supports the steel pipe rack body 3.
As shown in fig. 2 and 3, the inner surfaces of the recesses 21 are further brought into contact with the bottom surface of the steel pipe rack body 3, so that the foundation mat 2 supports the steel pipe rack body 3 more stably. For example, the inner surface of the concave pit 21 is concave arc-shaped, and the bottom surface of the steel pipe rack main body 3 is convex arc-shaped.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention. It should be noted that the components of the present invention are not limited to the above-mentioned whole application, and various technical features described in the present specification can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention.
Claims (10)
1. The utility model provides a steel utility tunnel of closed cross-section, a serial communication port, closed cross-section steel utility tunnel includes the foundation ditch, lays in basic bed course in the foundation ditch and place the last steel pipe gallery main part that has a closed cross-section of basic bed course, the top of basic bed course has the pit, the bottom embedding of steel pipe gallery main part in the pit.
2. The closed section steel utility tunnel of claim 1, wherein the shape of the dimples matches the shape of the bottom of the steel pipe tunnel body.
3. The closed section steel utility tunnel of claim 1, wherein the inner surfaces of said dimples conform to the bottom surface of said steel pipe tunnel body.
4. The closed section steel utility tunnel of claim 1, wherein the inner surface of said dimples is curved and the bottom surface of said steel tunnel body is curved.
5. The closed section steel utility tunnel of claim 1, wherein said steel tunnel body is formed from a plurality of corrugated steel tubes connected in series.
6. A construction method of a steel comprehensive pipe gallery with a closed section is characterized by comprising the following steps:
digging a foundation pit;
laying a foundation cushion layer with a pit at the top in the foundation pit;
placing the steel pipe gallery main body on the foundation cushion layer, and embedding the bottom of the steel pipe gallery main body into the concave pit.
7. The method for constructing the closed-section steel comprehensive pipe gallery according to claim 6, wherein after the foundation bed course is laid in the foundation pit, the foundation bed course is tamped, and then the steel pipe gallery body is placed on the foundation bed course.
8. The method of constructing a closed section steel utility tunnel according to claim 6, wherein the method further comprises: will the bottom embedding of steel pipe gallery main part back in the pit, to the soil covering layer is backfilled to the outside of steel pipe gallery main part, until the surface and the nature terrace parallel and level of soil covering layer.
9. The method of constructing a closed section steel utility tunnel according to claim 6, wherein the shape of the pits matches the shape of the bottom of the steel tunnel body.
10. The method of constructing a closed section steel utility tunnel according to claim 6, wherein the inner surface of the pit is in contact with the bottom surface of the steel tunnel body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911218222.XA CN110847233A (en) | 2019-12-03 | 2019-12-03 | Closed-section steel comprehensive pipe gallery and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911218222.XA CN110847233A (en) | 2019-12-03 | 2019-12-03 | Closed-section steel comprehensive pipe gallery and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110847233A true CN110847233A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911218222.XA Pending CN110847233A (en) | 2019-12-03 | 2019-12-03 | Closed-section steel comprehensive pipe gallery and construction method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906844A (en) * | 2017-04-18 | 2017-06-30 | 南京联众建设工程技术有限公司 | Corrugated steel structure underground pipe gallery base configuration and its construction method |
| CN207452610U (en) * | 2017-11-07 | 2018-06-05 | 中交第一公路勘察设计研究院有限公司 | A kind of assembled steel bellows open-cut tunnel structure for Permafrost Area |
| CN109339105A (en) * | 2018-12-10 | 2019-02-15 | 三江学院 | A kind of side's arch piping lane erection support and piping lane system and piping lane system installation method |
| CN109519201A (en) * | 2018-11-12 | 2019-03-26 | 杭州江润科技有限公司 | Underground cavern excavation support system and construction method |
| CN211472578U (en) * | 2019-12-03 | 2020-09-11 | 中冶京诚工程技术有限公司 | Steel utility tunnel with closed cross section |
-
2019
- 2019-12-03 CN CN201911218222.XA patent/CN110847233A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906844A (en) * | 2017-04-18 | 2017-06-30 | 南京联众建设工程技术有限公司 | Corrugated steel structure underground pipe gallery base configuration and its construction method |
| CN207452610U (en) * | 2017-11-07 | 2018-06-05 | 中交第一公路勘察设计研究院有限公司 | A kind of assembled steel bellows open-cut tunnel structure for Permafrost Area |
| CN109519201A (en) * | 2018-11-12 | 2019-03-26 | 杭州江润科技有限公司 | Underground cavern excavation support system and construction method |
| CN109339105A (en) * | 2018-12-10 | 2019-02-15 | 三江学院 | A kind of side's arch piping lane erection support and piping lane system and piping lane system installation method |
| CN211472578U (en) * | 2019-12-03 | 2020-09-11 | 中冶京诚工程技术有限公司 | Steel utility tunnel with closed cross section |
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