CN115341583B - Pipe gallery prefabricated pipe joint connection and flexible sealing structure and construction method - Google Patents
Pipe gallery prefabricated pipe joint connection and flexible sealing structure and construction method Download PDFInfo
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- CN115341583B CN115341583B CN202211157077.0A CN202211157077A CN115341583B CN 115341583 B CN115341583 B CN 115341583B CN 202211157077 A CN202211157077 A CN 202211157077A CN 115341583 B CN115341583 B CN 115341583B
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- pipe gallery
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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
- E02D29/16—Arrangement or construction of joints in foundation structures
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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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (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)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Joints With Sleeves (AREA)
Abstract
The invention discloses a pipe gallery prefabricated pipe joint connection and flexible sealing structure and a construction method, comprising a prefabricated pipe gallery body, wherein one end of the prefabricated pipe gallery body is provided with a rectangular annular inserting part, and the inserting part and the prefabricated pipe gallery body are coaxially arranged; the splicing part is provided with a first casting groove, a second casting groove and a first sealing groove which are in a rectangular shape, and the first sealing groove is arranged between the first casting groove and the second casting groove; grouting holes communicated to the outside of the prefabricated pipe gallery body are respectively formed in the first pouring groove and the second pouring groove; the other end of the prefabricated pipe gallery body is provided with an inserting groove matched with the inserting part; according to the prefabricated pipe gallery, the sealing rings of the plugging parts and the pouring grooves are used for grouting and sealing, so that waterproof base materials are prevented from being filled between prefabricated pipe gallery sections; the grouting sealing is carried out after the connection of the prefabricated pipe rack body is completed, the working procedure is simple, and the grouting is convenient and quick; the multi-layer waterproof sealing structure is formed by the solidified slurry and the sealing ring, and the waterproof effect is good.
Description
Technical Field
The invention relates to the technical field of underground pipe gallery construction, in particular to a pipe gallery prefabricated pipe joint connection and flexible sealing structure and a construction method.
Background
With the improvement of urban development level, the construction of intensive cities becomes the main stream of urban development, and the utility tunnel is used as an important infrastructure for intensive management of pipelines and is increasingly applied to pipeline management of various cities. As a conventional construction method for constructing the comprehensive pipe rack, the cast-in-situ method is contrary to the requirement of urban industrialized construction, and is easy to cause environmental pollution, resource waste, large in manpower requirement and high in labor intensity.
The current pipe gallery construction method comprises the following steps: an open cut cast-in-situ method, an open cut precast method, a shallow buried and buried dug method and a shield method. The open cut prefabrication method comprises the steps of prefabricating a pipe gallery in sections, and then transporting the prefabricated pipe gallery to a construction site for assembly. And because the pipe gallery is formed by assembling multiple sections, gaps exist at the joints between the pipe gallery sections, and the gaps are subsequently filled with waterproof base materials such as water stop sheets, polysulfide sealing layers, polyethylene foam joint filling plates and the like for waterproof treatment. The treatment mode not only increases the construction difficulty, but also increases the construction cost due to the use of the waterproof base material.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a prefabricated pipe joint connection and flexible sealing structure of a pipe gallery and a construction method, wherein the sealing ring of an inserting part and a pouring groove are used for grouting sealing, so that waterproof substrates are prevented from being filled between the prefabricated pipe gallery joints; the prefabricated pipe gallery is subjected to grouting sealing after the prefabricated pipe gallery body is connected, so that the working procedure is simple, and grouting is convenient and quick; the multi-layer waterproof sealing structure is formed by the solidified slurry and the sealing ring, and the waterproof effect is good.
The aim of the invention is realized by the following technical scheme:
the utility model provides a prefabricated tube coupling of piping lane is connected and flexible seal structure, includes prefabricated piping lane body, the one end of prefabricated piping lane body is equipped with the grafting portion of rectangular ring shape, grafting portion with prefabricated piping lane body coaxial arrangement; the splicing part is provided with a first casting groove, a second casting groove and a first sealing groove which are in a rectangular shape, and the first sealing groove is arranged between the first casting groove and the second casting groove; grouting holes communicated to the outside of the prefabricated pipe gallery body are respectively formed in the first pouring groove and the second pouring groove;
the other end of the prefabricated pipe gallery body is provided with an inserting groove matched with the inserting part, and two adjacent prefabricated pipe gallery bodies are connected with the inserting groove through the inserting part; the groove walls of the inserting grooves are provided with a third pouring groove, a fourth pouring groove and a second sealing groove which correspond to the first pouring groove, the second pouring groove and the first sealing groove respectively;
when two adjacent prefabricated pipe gallery bodies are spliced, the first pouring groove, the third pouring groove, the second pouring groove, the fourth pouring groove, the first sealing groove and the second sealing groove form a sealed first pouring ring groove, a sealed second pouring ring groove and a sealed ring groove respectively, and a sealing ring is arranged in the sealed ring groove.
Further, the sealing ring is a water-swelling rubber ring.
Further, the cross sections of the first pouring groove, the second pouring groove, the third pouring groove, the fourth pouring groove, the first sealing groove and the second sealing groove are semicircular or rectangular.
Further, the prefabricated pipe gallery body is provided with a plurality of lifting holes.
Further, the outer surface of the prefabricated joint body is provided with a non-cured rubber asphalt waterproof coating layer.
Further, a waterproof coiled material is arranged outside the non-cured rubber asphalt waterproof paint layer.
Further, concrete is arranged between the first pouring ring groove and the second pouring ring groove.
Further, a partition part is arranged in the middle of the prefabricated pipe gallery body.
A construction method based on pipe gallery prefabricated pipe joint connection and flexible sealing structure comprises the following steps:
s1, installing a sealing ring: the sealing ring is fixed in the first sealing groove, and half of the sealing ring is positioned in the first sealing groove, and the other half of the sealing ring is positioned outside the first sealing groove;
s2, hoisting a prefabricated pipe joint: after the formed prefabricated pipe joint is transported to a construction site, hoisting the prefabricated pipe joint to a designated installation position by a crane;
s3, assembling prefabricated pipe joints: when the bottom surface of the prefabricated pipe joint is level with the ground, the prefabricated pipe joint horizontally moves through a flat crane; the inserting part of the prefabricated pipe joint moves towards the inserting groove of the previous in-place prefabricated pipe joint until the inserting part is matched with the inserting groove, and the second sealing groove compresses the other half sealing ring positioned outside the first sealing groove;
s4, grouting and sealing: after the prefabricated pipe joint is assembled, cement slurry is poured into the first pouring groove and the second pouring groove through grouting holes, and after the cement slurry is solidified, front, middle and rear sealing layers are formed with the sealing ring.
The beneficial effects of the invention are as follows:
according to the prefabricated pipe gallery, the sealing rings of the plugging parts and the pouring grooves are used for grouting and sealing, so that waterproof base materials are prevented from being filled between prefabricated pipe gallery sections; the prefabricated pipe gallery is subjected to grouting sealing after the prefabricated pipe gallery body is connected, so that the working procedure is simple, and grouting is convenient and quick; the multi-layer waterproof sealing structure is formed by the solidified slurry and the sealing ring, and the waterproof effect is good.
Drawings
FIG. 1 is a side view of a piping lane prefabricated pipe section connection and flexible seal structure in an embodiment of the present invention;
FIG. 2 is a left side view of a piping lane prefabricated pipe section connection and flexible sealing structure in an embodiment of the present invention;
FIG. 3 is a longitudinal cross-sectional view of a piping lane prefabricated pipe section connection and flexible sealing structure in an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of two adjacent prefabricated pipe gallery bodies when connected;
FIG. 5 is a transverse cross-sectional view of a piping lane prefabricated pipe section connection and flexible sealing structure in an embodiment of the present invention;
in the figure, 1, prefabricating a pipe gallery body; 2. a plug-in part; 3. a first casting groove; 4. a second casting groove; 5. a first seal groove; 6. a plug-in groove; 7. a third pouring groove; 8. a fourth pouring groove; 9. a second seal groove; 10. the first pouring ring groove; 11. the second pouring ring groove; 12. sealing ring grooves; 13. a seal ring; 14. a hoisting hole; 15. concrete; 16. a partition portion; 17. grouting holes.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
example 1:
1-5, a prefabricated pipe joint connection and flexible sealing structure of a pipe gallery comprises a prefabricated pipe gallery body 1, wherein one end of the prefabricated pipe gallery body 1 is provided with a rectangular annular inserting part 2, and the inserting part 2 and the prefabricated pipe gallery body 1 are coaxially arranged; the splicing part 2 is provided with a first casting groove 3, a second casting groove 4 and a first sealing groove 5 which are in a rectangular ring shape, and the first sealing groove 5 is arranged between the first casting groove and the second casting groove 4; grouting holes 17 communicated to the outside of the prefabricated pipe gallery body 1 are respectively formed in the first pouring groove 3 and the second pouring groove 4;
the other end of the prefabricated pipe gallery body 1 is provided with a plugging groove 6 matched with the plugging part 2, and two adjacent prefabricated pipe gallery bodies 1 are connected with the plugging groove 6 through the plugging part 2; the groove walls of the plugging grooves 6 are provided with a third pouring groove 7, a fourth pouring groove 8 and a second sealing groove 9 which correspond to the first pouring groove 3, the second pouring groove 4 and the first sealing groove 5 respectively;
when two adjacent prefabricated pipe gallery bodies 1 are spliced, a first casting groove 3, a third casting groove 7, a second casting groove 4, a fourth casting groove 8, a first sealing groove 5, a second sealing groove 9 respectively form a sealed first casting ring groove 10, a second casting ring groove 11 and a sealing ring groove 12, and a sealing ring 13 is arranged in the sealing ring groove 12.
The sealing ring 13 is a water-swelling rubber ring.
The cross sections of the first pouring groove 3, the second pouring groove 4, the third pouring groove 7, the fourth pouring groove 8, the first sealing groove 5 and the second sealing groove 9 are semicircular or rectangular (circular in this embodiment).
Concrete 15 is arranged between the first pouring ring groove 10 and the second pouring ring groove 11.
Working principle: the prefabricated pipe gallery body 1 is connected with the splicing groove 6 through the splicing part 2. When the adjacent prefabricated pipe gallery bodies 1 are connected, the first pouring groove 3 and the third pouring groove 7 form a closed first pouring ring groove 10, the second pouring groove 4 and the fourth pouring groove 8 form a closed second pouring ring groove 11, and the sealing ring 13 is tightly pressed in a sealing ring groove 12 formed by the first sealing groove 5 and the second sealing groove 9.
Grouting (concrete 15 grouting) is performed through the grouting holes 17 after the prefabricated pipe gallery body 1 is spliced, and the grouting enters the first pouring ring groove 10 and the second pouring ring groove 11 through the grouting holes 17 until the grouting returns from the grouting holes 17. After the slurry is solidified, sealing structures are formed on two sides of the sealing ring 13, so that the sealing ring 13 is sealed between the solidified slurries. The solidified slurry can play a role in strengthening the connection of the adjacent prefabricated pipe gallery bodies 1 except for sealing the sealing ring 13, and simultaneously, the slurry in the first grouting ring groove on the left side can be used for separating the gap between the two prefabricated pipe gallery bodies 1 after being solidified, so that liquid is prevented from entering the pipe gallery from the gap between the two prefabricated pipe gallery bodies 1.
According to the prefabricated pipe gallery, the sealing rings 13 of the plugging parts 2 and the pouring grooves are used for grouting and sealing, so that waterproof substrates are prevented from being filled between prefabricated pipe gallery sections; the prefabricated pipe gallery is subjected to grouting sealing after the prefabricated pipe gallery body 1 is connected, so that the working procedure is simple, and grouting is convenient and quick; the multi-layer waterproof sealing structure is formed by the solidified slurry and the sealing ring 13, and the waterproof effect is good.
Further, as shown in fig. 5, the prefabricated pipe gallery body 1 is provided with a plurality of lifting holes 14. The hanging hole 14 is arranged to facilitate hanging rotation and installation of the prefabricated pipe gallery body 1.
Further, the outer surface of the prefabricated joint body is provided with a non-cured rubber asphalt waterproof coating layer.
The waterproof coiled material is arranged outside the non-cured rubber asphalt waterproof coating layer. The non-cured rubber asphalt waterproof coating layer and the waterproof coiled material are arranged after grouting and slurry curing, so that the waterproof performance of the prefabricated pipe gallery body 1 is further guaranteed.
Further, as shown in fig. 5, a partition 16 is provided in the middle of the prefabricated pipe gallery body 1. The partition portion that sets up is with prefabricated piping lane body inside being cut apart into two independent spaces, and two independent spaces can be used for setting up different pipelines respectively.
Example 2:
the embodiment is a construction method for connecting prefabricated pipe joints of a pipe gallery and a flexible sealing structure based on the embodiment 1, comprising the following steps:
s1, installing a sealing ring: the sealing ring is fixed in the first sealing groove, and half of the sealing ring is positioned in the first sealing groove, and the other half of the sealing ring is positioned outside the first sealing groove;
s2, hoisting a prefabricated pipe joint: after the formed prefabricated pipe joint is transported to a construction site, hoisting the prefabricated pipe joint to a designated installation position by a crane;
s3, assembling prefabricated pipe joints: when the bottom surface of the prefabricated pipe joint is level with the ground, the prefabricated pipe joint horizontally moves through a flat crane; the inserting part of the prefabricated pipe joint moves towards the inserting groove of the previous in-place prefabricated pipe joint until the inserting part is matched with the inserting groove, and the second sealing groove compresses the other half sealing ring positioned outside the first sealing groove;
s4, grouting and sealing: after the prefabricated pipe joint is assembled, cement slurry is poured into the first pouring groove and the second pouring groove through grouting holes, and after the cement slurry is solidified, front, middle and rear sealing layers are formed with the sealing ring. Wherein, the cement slurry is poured until the cement slurry returns from the grouting holes.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (1)
1. A construction method based on pipe gallery prefabricated pipe joint connection and flexible sealing structure is characterized in that: the pipe gallery prefabricated pipe joint connection and flexible sealing structure comprises a prefabricated pipe gallery body, wherein one end of the prefabricated pipe gallery body is provided with a rectangular annular inserting part, and the inserting part and the prefabricated pipe gallery body are coaxially arranged; the splicing part is provided with a first casting groove, a second casting groove and a first sealing groove which are in a rectangular shape, and the first sealing groove is arranged between the first casting groove and the second casting groove; grouting holes communicated to the outside of the prefabricated pipe gallery body are respectively formed in the first pouring groove and the second pouring groove;
the other end of the prefabricated pipe gallery body is provided with an inserting groove matched with the inserting part, and two adjacent prefabricated pipe gallery bodies are connected with the inserting groove through the inserting part; the groove walls of the inserting grooves are provided with a third pouring groove, a fourth pouring groove and a second sealing groove which correspond to the first pouring groove, the second pouring groove and the first sealing groove respectively;
when two adjacent prefabricated pipe gallery bodies are spliced, a first casting groove, a third casting groove, a second casting groove, a fourth casting groove, a first sealing groove, a second sealing groove and a sealing ring groove are respectively formed into a sealed first casting ring groove, a second casting ring groove and a sealing ring groove, and sealing rings are arranged in the sealing ring grooves;
the method comprises the following steps:
s1, installing a sealing ring: the sealing ring is fixed in the first sealing groove, and half of the sealing ring is positioned in the first sealing groove, and the other half of the sealing ring is positioned outside the first sealing groove;
s2, hoisting a prefabricated pipe joint: after the formed prefabricated pipe joint is transported to a construction site, hoisting the prefabricated pipe joint to a designated installation position by a crane;
s3, assembling prefabricated pipe joints: when the bottom surface of the prefabricated pipe joint is level with the ground, the prefabricated pipe joint horizontally moves through a flat crane; the inserting part of the prefabricated pipe joint moves towards the inserting groove of the previous in-place prefabricated pipe joint until the inserting part is matched with the inserting groove, and the second sealing groove compresses the other half sealing ring positioned outside the first sealing groove;
s4, grouting and sealing: after the prefabricated pipe joint is assembled, cement slurry is poured into the first pouring groove and the second pouring groove through grouting holes, and after the cement slurry is solidified, front, middle and rear sealing layers are formed with the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211157077.0A CN115341583B (en) | 2022-09-21 | 2022-09-21 | Pipe gallery prefabricated pipe joint connection and flexible sealing structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211157077.0A CN115341583B (en) | 2022-09-21 | 2022-09-21 | Pipe gallery prefabricated pipe joint connection and flexible sealing structure and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115341583A CN115341583A (en) | 2022-11-15 |
| CN115341583B true CN115341583B (en) | 2023-07-21 |
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| CN202211157077.0A Active CN115341583B (en) | 2022-09-21 | 2022-09-21 | Pipe gallery prefabricated pipe joint connection and flexible sealing structure and construction method |
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Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256838B (en) * | 2015-11-06 | 2017-05-17 | 深圳华瀚管廊物业服务有限公司 | Pipe gallery prefabricated members and prefabricated comprehensive pipe gallery |
| CN105780808A (en) * | 2016-03-14 | 2016-07-20 | 青岛润国生态科技发展有限公司 | Assembly type precast comprehensive pipe gallery |
| CN105971015A (en) * | 2016-07-12 | 2016-09-28 | 中国电建集团昆明勘测设计研究院有限公司 | Fragmentation assembly type steel and concrete structure comprehensive pipe rack |
| CN205776351U (en) * | 2016-07-12 | 2016-12-07 | 中国电建集团昆明勘测设计研究院有限公司 | Burst assembled steel reinforced concrete structure composition piping lane |
| CN206052779U (en) * | 2016-09-29 | 2017-03-29 | 陕西建筑产业投资集团有限公司 | A kind of prefabricated pipe gallery splicing structure |
| CN206267185U (en) * | 2016-12-22 | 2017-06-20 | 厦门市市政工程设计院有限公司 | A kind of rectangle prefabricated pipe fitting with arc bell and spigot joint |
| CN207597428U (en) * | 2017-11-01 | 2018-07-10 | 浙江交工集团股份有限公司 | Prefabricated piping lane is connected waterproof construction with cast-in-place piping lane |
| CN107859064B (en) * | 2017-11-01 | 2023-06-06 | 浙江交工集团股份有限公司 | Waterproof structure for connection of prefabricated pipe gallery and cast-in-situ pipe gallery and construction method |
| CN208152086U (en) * | 2018-03-09 | 2018-11-27 | 中冶京诚工程技术有限公司 | The assembled underground pipe gallery of partitioning waterproofing |
| CN108411939A (en) * | 2018-03-16 | 2018-08-17 | 通号建设集团有限公司 | The spliced prefabricated pipe gallery of one kind and its construction method |
| CN109183847B (en) * | 2018-11-12 | 2023-10-31 | 北京建工新型建材科技股份有限公司 | Underground prefabricated pipe gallery |
| CN210194675U (en) * | 2019-04-18 | 2020-03-27 | 南京同力建设集团股份有限公司 | Underground prefabricated comprehensive pipe gallery |
| CN210194676U (en) * | 2019-04-18 | 2020-03-27 | 南京同力建设集团股份有限公司 | Structure is assembled to prefabricated utility tunnel tube coupling of underground |
| CN216516686U (en) * | 2021-11-12 | 2022-05-13 | 广西建工轨道装配式建筑产业有限公司 | Prefabricated piping lane of sectional type |
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2022
- 2022-09-21 CN CN202211157077.0A patent/CN115341583B/en active Active
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