CN211948676U - Major diameter municipal administration steel pipe underground installation structure - Google Patents
Major diameter municipal administration steel pipe underground installation structure Download PDFInfo
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- CN211948676U CN211948676U CN202020398534.5U CN202020398534U CN211948676U CN 211948676 U CN211948676 U CN 211948676U CN 202020398534 U CN202020398534 U CN 202020398534U CN 211948676 U CN211948676 U CN 211948676U
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Abstract
The utility model provides a technical scheme is a major diameter municipal steel pipe underground installation structure. The steel pipe underground installation structure comprises a steel pipe installation tunnel formed by shield construction and a steel pipe arranged in the steel pipe installation tunnel, wherein the steel pipe is arranged in the middle or the middle lower part of the steel pipe installation tunnel; the lower part of the steel pipe is fixed through a concrete pouring cushion layer, the concrete pouring cushion layer is an arc cushion layer which is formed by pouring concrete between the lower part of the steel pipe and the shield segment after the steel pipe is supported through erecting a steel support and covers the lower part of the steel pipe, the height of the steel pipe covered by the concrete pouring cushion layer is at least higher than the diameter 1/3 of the steel pipe, and a waterproof layer is arranged between the concrete pouring cushion layer and the shield segment; and a drainage pipe is buried in the concrete pouring cushion layer. The utility model discloses in the construction installation, need not tear peripheral building open, solved current city major diameter steel pipe and buried inconvenience underground, the construction degree of difficulty is big, problem with high costs.
Description
Technical Field
The utility model belongs to municipal piping erection specifically is a major diameter municipal steel pipe underground installation structure.
Background
With the continuous development of urban construction, more and more municipal pipelines are buried underground. Generally, the underground pipeline is installed basically in a burying mode, but for large-diameter urban water diversion steel pipes, due to the fact that the diameter of the steel pipes is large, burying is inconvenient, in addition, due to the fact that urban buildings are more, peripheral buildings need to be removed in the burying process, the engineering quantity is large, and therefore construction difficulty is large, and cost is high.
Disclosure of Invention
The utility model discloses problem to prior art existence provides a major diameter municipal steel pipe underground installation structure, and this structure can solve the problem that the major diameter steel pipe is buried inconvenience underground in the current city, the construction degree of difficulty is big, with high costs.
In order to solve the problems, the technical scheme provided by the utility model is a large-diameter municipal steel pipe underground installation structure, which comprises a steel pipe installation tunnel formed by shield construction and a steel pipe arranged in the steel pipe installation tunnel, wherein the steel pipe installation tunnel consists of shield segments and a grouting layer arranged behind the segments, and the steel pipe is arranged in the middle or the middle lower part of the steel pipe installation tunnel; the lower part of the steel pipe is fixed through a concrete pouring cushion layer, the concrete pouring cushion layer is an arc cushion layer which is formed by pouring concrete between the lower part of the steel pipe and the shield segment after the steel pipe is supported through erecting a steel support and covers the lower part of the steel pipe, the height of the steel pipe covered by the concrete pouring cushion layer is at least higher than the diameter 1/3 of the steel pipe, and a waterproof layer is arranged between the concrete pouring cushion layer and the shield segment; and a drainage pipe is buried in the concrete pouring cushion layer.
The utility model discloses further technical scheme: the steel pipe underground installation structure further comprises a cable bridge frame arranged above the top of the steel pipe, and the cable bridge frame is fixed on the shield pipe sheet.
The utility model discloses better technical scheme: a plurality of stiffening rings are installed in the region that concrete placement bed course is higher than to the steel pipe, and a plurality of stiffening rings distribute along the axial equidistance of steel pipe, and its interval is 2.5 ~ 3.5 m.
The utility model discloses better technical scheme: the waterproof layer is formed by directly laying at least 2-4 layers of SBS self-adhesive waterproof coiled materials on the shield segment, and the thickness of the waterproof layer is 10-16 mm.
The utility model discloses further technical scheme: the thickness of the concrete pouring cushion layer is 60-80 cm, and the concrete pouring cushion layer is formed by one-time grouting or twice grouting; when the concrete pouring cushion layer is formed by one-time pouring, after the steel pipe is transported to the steel pipe installation tunnel, a steel support is directly erected on the shield pipe piece to support the steel pipe, a waterproof layer is laid on the shield pipe piece, and then concrete is poured to form the arc-shaped concrete pouring cushion layer which coats the lower part of the steel pipe; when the concrete pouring cushion layer is formed by pouring twice, before the steel pipe is transported, a waterproof layer is laid on the shield segment, concrete is poured for the first time to form a horizontal cushion layer with the height of 30-40 cm, then after the steel pipe is transported to the steel pipe installation tunnel, a steel support is erected on the horizontal cushion layer, and concrete is continuously poured on the horizontal cushion layer to form an arc-shaped concrete pouring cushion layer for coating the lower part of the steel pipe.
The utility model discloses better technical scheme: the drain pipe is equipped with two, adopts the PE pipe, buries the concrete placement bed course of the both sides of steel pipe underground respectively to be parallel with the steel pipe.
The utility model discloses a dig the shield tunnel earlier, then the mode of installing the major diameter steel pipe in the tunnel carries out the installation of diversion steel pipe, in the construction installation, need not tear the surrounding building open and move to can not influence city building, and install the steel pipe simple and conveniently in the tunnel to can ensure constructor's safety, solved current city interior major diameter steel pipe bury the inconvenience underground, the construction degree of difficulty is big, problem with high costs.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of one-time pouring of the concrete pouring layer of the present invention;
fig. 3 is the utility model discloses a concrete placement layer divides the structure sketch map of pouring twice.
In the figure: the method comprises the following steps of 1-installing a tunnel by using a steel pipe, 100-shield segments, 101-grouting layers, 2-steel pipes, 3-drainage pipes, 4-waterproof layers, 5-concreting cushion layers, 501-horizontal cushion layers, 6-steel supports, 7-diameter adding rings and 8-cable bridges.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. Fig. 1 and 3 are drawings of an embodiment, which are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating an embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The embodiment provides a large-diameter municipal steel pipe underground installation structure, which comprises a steel pipe installation tunnel 1 formed by shield construction and a steel pipe 2 arranged in the steel pipe installation tunnel, wherein the steel pipe installation tunnel consists of a shield segment 100 and a grouting layer 101 arranged behind the segment, and the steel pipe 2 is arranged in the middle or the middle lower part of the steel pipe installation tunnel; the lower portion of the steel pipe 2 is fixed through a concrete pouring cushion 5, the concrete pouring cushion 5 is an arc-shaped cushion which is formed by pouring concrete between the lower portion of the steel pipe 2 and a shield segment 100 and wraps the lower portion of the steel pipe 2 after the steel pipe 2 is supported through erecting a steel support 6, the height of the steel pipe 2 wrapped by the concrete pouring cushion 5 is at least higher than the diameter 1/3 of the steel pipe 2, a waterproof layer 4 is arranged between the concrete pouring cushion 5 and the shield segment 100, the waterproof layer 4 is formed by directly laying 2-5 layers of self-adhesive SBS waterproof coiled materials on the shield segment 100, drain pipes 3 are buried in the concrete pouring cushion 5 on the two sides of the steel pipe 2 respectively, the two drain pipes are PE pipes and are parallel to the steel pipe, a cable bridge 8 above the top of the steel pipe 2 is arranged, and the cable bridge 8 is fixed on the shield segment 100. In order to fix steel pipe 2, avoid its deformation, install a plurality of stiffening rings 7 in the region of steel pipe 2 height concrete placement bed course 5, a plurality of stiffening rings 7 are along the axial equidistance distribution of steel pipe 2, and its interval is 2.5 ~ 3.5 m.
The installation process of the present invention will be further described with reference to the following examples. The embodiment aims at a certain water supply pipeline project in Hangzhou, and the project conducts water diversion on two water plants in an urban area, and the scale of the water diversion is 71 ten thousand meters3D, this engineering is along dividing the shop around the high-speed water works that divides in city, and line length 20.2km can pass urban construction, and the diameter of diversion steel pipe is great, buries more difficulty underground, in order to avoid having an influence to peripheral building and urban road, adopts the utility model provides a structure is under construction the good shield tunnel through the mode of shield construction earlier, then installs the steel pipe in the shield tunnel. The steel pipe is divided into 7 sections, 8 shield wells are arranged, and the average distance is about 3.0 km. The diameter of the shield tunnel is 6.2m, the inner diameter of the shield tunnel is 5.5m after lining, and the outer diameter of the water diversion steel pipe is 3496mm DN3496 pipeline.
In the embodiment, the shield construction mode is the existing shield construction method, a shield segment 100 with the thickness of 35cm is adopted, a steel pipe 2 is arranged in the shield segment 100, the vertical distance from the top of the steel pipe 2 to the segment at the top is 130.4mm, and the vertical distance from the bottom of the steel pipe 2 to the segment at the bottom is 70 mm. The bottom of the steel pipe is provided with phi 22 fixed anchor bars with the row spacing of 1m x 2m, the bottom of the steel pipe is fixed by a concrete pouring cushion layer 5, and the pouring modes of the concrete pouring cushion layer 5 are divided into two modes.
The concrete casting cushion layer 5 in the first embodiment is formed by one-time casting or twice casting, and the concrete construction process is as follows: after a steel pipe installation tunnel 1 is formed in shield construction, an original track in the shield tunnel is directly adopted to transport a steel pipe 2 into the steel pipe installation tunnel 1 through a transport trolley or a steel pipe transport vehicle, then as shown in figure 2, the steel pipe 2 is erected to a designed height through a steel support 6, the steel support 2 is formed by welding I-shaped steel and channel steel, then the original track in the steel pipe installation tunnel 1 is dismantled, three layers of SBS self-adhesive waterproof coiled materials are laid on a shield segment 100 to be well waterproof, the thickness of each layer is 4mm, the total thickness is 12mm, the pipeline and the segment can be isolated, and stress damage caused by uneven shrinkage deformation is prevented; and then, the template is erected, concrete is directly poured between the shield segment 100 with the waterproof layer laid and the steel pipe 2 to form an arc-shaped concrete pouring cushion layer 5 for coating the left and right areas of the lower part 1/3 of the steel pipe 2, and the concrete template is directly designed into an arc-shaped template meeting the size requirement for convenient pouring.
The concrete casting cushion layer 5 in the second embodiment is formed by casting twice, and the casting process is as follows: after a steel pipe installation tunnel 1 is formed through shield construction, an original track in the shield tunnel is firstly removed, then three layers of SBS self-adhesive waterproof coiled materials are paved on a shield segment 100 for waterproof work, a template is erected for pouring concrete to form a horizontal cushion 501 with the height of 35cm, as shown in figure 3, after the horizontal cushion 501 is solidified to the required strength, a steel pipe 2 is transported into the steel pipe installation tunnel 1 through transportation equipment without a track form, the steel pipe 2 is erected to the designed height through a steel support 6, and then the template is erected between the horizontal cushion 501 and the steel pipe 2 for pouring concrete again to form an arc-shaped concrete pouring cushion 5 for coating the left area and the right area of 1/3 on the lower portion of the steel pipe 2.
Arc concrete placement bed course 5 in the above-mentioned embodiment adopts C25 concrete, and concrete placement bed course 5's highest position is 199.6mm from the section of jurisdiction bottommost, and 5m intervals of concrete placement bed course are a construction unit, and the centre sets up the expansion joint, and the seam width 2cm, seam crossing set up outer paste formula rubber waterstop to adopt the pine board caulking. In order to avoid the corrosion of the surface of the steel pipe, the steel pipe is externally provided with 400 mu m (dry film thickness) thick fusion bonding epoxy powder, and the steel pipe is internally provided with 18000 mu m (dry film thickness) cement mortar; in order to increase the strength of the steel pipe, a plurality of stiffening rings 7 can be arranged in the area of the steel pipe higher than the concrete pouring cushion layer 5, and the distance between the stiffening rings 7 is 3 m.
To sum up, for the utility model discloses an embodiment of listing, nevertheless the utility model discloses not only be limited to above-mentioned embodiment, as long as reach with any same or similar means the technical effect of the utility model, all should belong to the scope of the protection of the utility model.
Claims (6)
1. The utility model provides a major diameter municipal administration steel pipe underground installation structure which characterized in that: the steel pipe underground installation structure comprises a steel pipe installation tunnel (1) formed by shield construction and a steel pipe (2) arranged in the steel pipe installation tunnel, wherein the steel pipe installation tunnel (1) consists of a shield segment (100) and a grouting layer (101) arranged behind the segment, and the steel pipe (2) is arranged in the middle or lower part of the steel pipe installation tunnel (1); the lower part of the steel pipe (2) is fixed through a concrete pouring cushion layer (5), the concrete pouring cushion layer (5) is an arc cushion layer which is formed by pouring concrete between the lower part of the steel pipe (2) and the shield segment (100) after the steel pipe (2) is supported through erecting a steel support (6), the height of the concrete pouring cushion layer (5) covering the steel pipe (2) is at least higher than the diameter 1/3 of the steel pipe (2), and a waterproof layer (4) is arranged between the concrete pouring cushion layer (5) and the shield segment (100); and a drain pipe (3) is embedded in the concrete pouring cushion layer (5).
2. The underground installation structure of large-diameter municipal steel pipes according to claim 1, wherein: the steel pipe underground installation structure further comprises a cable bridge (8) arranged above the top of the steel pipe (2), and the cable bridge (8) is fixed on the shield segment (100).
3. An underground installation structure of large-diameter municipal steel pipes according to claim 1 or 2, wherein: a plurality of stiffening rings (7) are installed in the region that steel pipe (2) are higher than concrete placement bed course (5), and a plurality of stiffening rings (7) are along the axial equidistance distribution of steel pipe (2), and its interval is 2.5 ~ 3.5 m.
4. An underground installation structure of large-diameter municipal steel pipes according to claim 1 or 2, wherein: the waterproof layer (4) is formed by directly laying at least 2-4 layers of SBS self-adhesive waterproof coiled materials on the shield segment (100), and the thickness of the waterproof layer is 10-16 mm.
5. An underground installation structure of large-diameter municipal steel pipes according to claim 1 or 2, wherein: the thickness of the concrete pouring cushion layer (5) is 60-80 cm, and the concrete pouring cushion layer is formed by one-time pouring or twice pouring.
6. An underground installation structure of large-diameter municipal steel pipes according to claim 1 or 2, wherein: the two drainage pipes (3) are arranged, are PE pipes, are embedded in concrete pouring cushions (5) on two sides of the steel pipe (2) respectively, and are parallel to the steel pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020398534.5U CN211948676U (en) | 2020-03-25 | 2020-03-25 | Major diameter municipal administration steel pipe underground installation structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020398534.5U CN211948676U (en) | 2020-03-25 | 2020-03-25 | Major diameter municipal administration steel pipe underground installation structure |
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| CN211948676U true CN211948676U (en) | 2020-11-17 |
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| CN202020398534.5U Active CN211948676U (en) | 2020-03-25 | 2020-03-25 | Major diameter municipal administration steel pipe underground installation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236858A (en) * | 2021-04-20 | 2021-08-10 | 武汉一冶建筑安装工程有限责任公司 | Method for laying concrete cushion and steel pipe in top pipe |
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2020
- 2020-03-25 CN CN202020398534.5U patent/CN211948676U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236858A (en) * | 2021-04-20 | 2021-08-10 | 武汉一冶建筑安装工程有限责任公司 | Method for laying concrete cushion and steel pipe in top pipe |
| CN113236858B (en) * | 2021-04-20 | 2023-09-15 | 武汉一冶建筑安装工程有限责任公司 | Method for laying concrete cushion layer and steel pipe in jacking pipe |
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