CN114775509A - Prefabricated part assembling structure suitable for operation without stopping water - Google Patents
Prefabricated part assembling structure suitable for operation without stopping water Download PDFInfo
- Publication number
- CN114775509A CN114775509A CN202210411403.XA CN202210411403A CN114775509A CN 114775509 A CN114775509 A CN 114775509A CN 202210411403 A CN202210411403 A CN 202210411403A CN 114775509 A CN114775509 A CN 114775509A
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- China
- Prior art keywords
- groove
- water
- prefabricated part
- positioning groove
- water stop
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/121—Devices for applying linings on banks or the water bottom
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
-
- 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
- E02D29/06—Constructions, or methods of constructing, in water
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a prefabricated part assembling structure suitable for non-stop operation, which is used between prefabricated part connecting surfaces vertically stacked and comprises: the positioning groove is arranged at the periphery of the top surface of the lower-layer prefabricated part; the inserting tenon is arranged on the bottom surface of the upper-layer prefabricated part corresponding to the positioning groove and is matched with the positioning groove; the water stopping groove is arranged on the top surface of the lower-layer prefabricated part and is positioned on the outer side of the positioning groove; and the waterstop is arranged in the waterstop groove and is extruded and deformed under the action of the upper-layer prefabricated member to form waterstop sealing. The invention has simple structure and convenient construction, can quickly finish assembly through the interlaminar tenon-and-mortise structure, and improves the vertical installation precision of the assembly parts; meanwhile, a water stopping groove is formed between every two adjacent prefabricated parts, a hollow rubber rod is placed in the groove, the hollow rubber rod is compressed to achieve a water stopping function when assembly is completed, and the efficiency of assembling and sinking in place of the diversion building on site in the diversion project can be effectively improved.
Description
Technical Field
The invention relates to the technical field of underwater assembly of concrete buildings, in particular to a prefabricated member assembly structure suitable for operation without stopping water.
Background
When the flow of large diversion and water transfer engineering is increased, obvious Karman vortex street phenomena occur at the downstream of buildings such as part of bridge piers, aqueducts, inverted siphons and the like, even turbulent flow states are formed, and the increase of water transfer capacity is restricted. Therefore, the above buildings need to be optimized and modified, and the karman vortex street phenomenon is eliminated and the water delivery capacity is improved by adding a diversion structure at the upstream of the buildings. Because the scale of the water diversion project is large, the economic loss of water cut-off modification is overlarge, and the original building can be modified only under the condition of normal water delivery; meanwhile, the water surface of the diversion project is wide, piers, columns, guide walls and the like are all positioned in the center of a channel, the lifting capacity is obviously reduced after a conventional automobile crane arm is unfolded for a long distance, and although a crawler crane can lift large tonnage, the width and the bearing capacity of a maintenance road along the channel are limited, so that the safety of the original diversion building is influenced. In order to complete the optimization and reconstruction of aqueduct, inverted siphon and bridge pier stud of diversion works, most of the prior diversion buildings adopt fabricated structures, and after the prefabrication of each component in a factory is finished, hoisting equipment is hoisted on water to complete the on-site assembly and sinking in place. Influenced by the condition of the moving water, the diversion building with larger volume often has the defects of low assembly precision, poor water stopping effect and the like when being vertically connected.
Disclosure of Invention
In order to solve the problems, the invention provides a prefabricated part assembling structure suitable for operation without stopping water, which can adopt the following technical scheme:
the invention relates to a prefabricated part assembling structure suitable for non-stop operation, which is used between prefabricated part connecting surfaces which are vertically stacked, and comprises
The positioning groove is arranged at the periphery of the top surface of the lower-layer prefabricated part;
the inserting tenon is arranged on the bottom surface of the upper-layer prefabricated part corresponding to the positioning groove and is matched with the positioning groove;
the water stopping groove is arranged on the top surface of the lower-layer prefabricated part and is positioned outside the positioning groove;
and the waterstop is arranged in the waterstop groove and is extruded and deformed under the action of the upper-layer prefabricated member to form waterstop sealing.
The prefabricated part comprises a cavity structure formed by side walls in a surrounding mode, the positioning groove, the water stopping groove and the water stopping belt are arranged on the top surfaces of the side walls in the circumferential direction, the inserting tenon is arranged on the bottom surfaces of the side walls, and the bottom surfaces of the side walls corresponding to the water stopping groove are of a plane structure.
The cross section of the water stopping groove is of a semicircular structure.
The water stop belt is a hollow rubber rod, the outer diameter of the water stop belt is 0.6-0.7 times of the inner diameter of the water stopping tank, and the inner diameter of the water stop belt is 1.1-1.2 times of the difference value of the inner diameter of the water stop belt and the inner diameter of the water stopping tank.
The cavity structure is provided with a bottom plate, and a rubber sucker is arranged on the periphery of the lower surface of the bottom plate along the annular direction.
The prefabricated part assembling structure suitable for non-water-stop operation is simple in structure and convenient to construct, and can be used for quickly completing assembly through the interlaminar mortise and tenon joint structure, so that the vertical mounting precision of an assembly part is improved; meanwhile, a water stopping groove is formed between every two adjacent prefabricated parts, a hollow rubber rod is placed in the groove, the hollow rubber rod is compressed to achieve a water stopping function when assembly is completed, and the efficiency of assembling and sinking in place of the diversion building on site in the diversion project can be effectively improved.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is an exploded view of fig. 1.
Detailed Description
The invention relates to a prefabricated part assembling structure suitable for non-stop operation, which is used between prefabricated part connecting surfaces vertically stacked, and comprises: the positioning groove is arranged at the periphery of the top surface of the lower prefabricated member; the inserting tenon is arranged on the bottom surface of the upper-layer prefabricated part corresponding to the positioning groove and is matched with the positioning groove; the water stopping groove is arranged on the top surface of the lower-layer prefabricated part and is positioned outside the positioning groove; and the water stop belt is arranged in the water stop groove, and is extruded and deformed under the action of the upper-layer prefabricated member to form water stop seal.
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific assembly process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 and 2, the diversion building to be built is a thin-walled upper-opening cavity structure with a bottom plate, the adopted prefabricated members 1 are vertically stacked, and the assembling structures are arranged between the connecting surfaces of the adjacent prefabricated members 1 for accurate positioning and forming sealing water stop.
The prefabricated parts 1 are divided into two types, one type is a cylindrical structure, the other type is an upper opening structure with a bottom plate, the prefabricated parts are all provided with annular side walls with the same shape and the same size, the top surface of each annular side wall of each prefabricated part 1 is provided with an annular positioning groove 2, and each positioning groove 2 is positioned at the periphery of the side wall of each prefabricated part 1 and is of an L-shaped groove structure arranged close to a cavity; an annular water stop groove 3 is formed in the outer side of each positioning groove 2, the cross section of each annular water stop groove 3 is of a semicircular structure, and hollow rubber rods 4 installed in the annular water stop grooves are connected end to form an annular water stop belt. Under normal conditions, the outer diameter of the hollow rubber rod 4 is 0.6-0.7 times of the inner diameter of the water stopping tank 3, and the inner diameter of the hollow rubber rod 4 is 1.1-1.2 times of the difference value of the inner diameter of the water stopping tank 3, so that the hollow rubber rod 4 can be filled in the water stopping tank 3 after being deformed under pressure to form a sealed water stopping structure. Secondly, the edge of the bottom surface of the side wall of the prefabricated part 1 with the tubular structure is provided with an inserting tenon matched with the positioning groove 2, and when the prefabricated part is installed, the positioning groove 2 supports the inserting tenon and is assembled and positioned. The position opposite to the water stop tank 3 on the bottom surface of the side wall of the prefabricated member 1 with the cylindrical structure is of a plane structure, so that the hollow rubber rod 4 can be fully extruded. In addition, in order to improve the assembly accuracy, a rubber suction cup 5 is installed on the bottom plate of the upper opening structure prefabricated member 1 positioned at the bottom, and when the rubber suction cup is contacted with the bottom surface of the channel, the rubber suction cup can be attracted with the bottom surface of the channel under the action of gravity, so that the assembly difficulty between the prefabricated members 1 is reduced. Further, above-mentioned rubber suction cup 5 sets up at the lower surface periphery of prefab 1 bottom plate hoop, makes the assembly part in the in-process that sinks, can produce certain buoyancy to slowly descend, avoid taking place to collide with and damage.
It should be noted that in the description of the present invention, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element 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.
Claims (5)
1. The utility model provides a be suitable for prefab assembly structure of operation of not stopping water for connect between the face along the prefab of vertical range upon range of setting, its characterized in that: comprises that
The positioning groove is arranged at the periphery of the top surface of the lower prefabricated member;
the inserting tenon is arranged on the bottom surface of the upper-layer prefabricated part corresponding to the positioning groove and is matched with the positioning groove;
the water stopping groove is arranged on the top surface of the lower-layer prefabricated part and is positioned outside the positioning groove;
and the water stop belt is arranged in the water stop groove, and is extruded and deformed under the action of the upper-layer prefabricated member to form water stop seal.
2. A preform assembly structure adapted for non-stop operation according to claim 1, wherein: the prefabricated part all includes the cavity structure of being enclosed by the lateral wall, constant head tank, stagnant water groove and waterstop are in along the hoop setting on the top surface of lateral wall, the plug tenon sets up on the bottom surface of lateral wall, just the lateral wall bottom surface that the waterstop groove corresponds is planar structure.
3. The preform assembling structure adapted for non-stop operation according to claim 2, wherein: the cross section of the water stopping groove is of a semicircular structure.
4. The preform assembling structure adapted for non-stop operation according to claim 3, wherein: the water stop belt is a hollow rubber rod, the outer diameter of the water stop belt is 0.6-0.7 times of the inner diameter of the water stop tank, and the inner diameter of the water stop belt is 1.1-1.2 times of the difference value of the inner diameter of the water stop tank and the inner diameter of the water stop belt.
5. The preform assembling structure adapted for non-stop operation according to claim 2, wherein: the cavity structure is provided with a bottom plate, and a rubber sucker is arranged on the periphery of the lower surface of the bottom plate in the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210411403.XA CN114775509B (en) | 2022-04-19 | 2022-04-19 | Prefabricated member assembling structure suitable for operation without stopping water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210411403.XA CN114775509B (en) | 2022-04-19 | 2022-04-19 | Prefabricated member assembling structure suitable for operation without stopping water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114775509A true CN114775509A (en) | 2022-07-22 |
| CN114775509B CN114775509B (en) | 2023-12-12 |
Family
ID=82432093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210411403.XA Active CN114775509B (en) | 2022-04-19 | 2022-04-19 | Prefabricated member assembling structure suitable for operation without stopping water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114775509B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202360988U (en) * | 2011-11-18 | 2012-08-01 | 上海交通大学 | External resistance reducing and stream guiding hood of pipeline |
| CN103161139A (en) * | 2013-01-31 | 2013-06-19 | 株洲博尔曼科技发展有限公司 | Integrally assembled type flow guiding screen and construction method thereof |
| CN203049616U (en) * | 2013-01-17 | 2013-07-10 | 杨芳芳 | Novel prefabricated building block used for assembling well bore wall |
| CN104929037A (en) * | 2015-04-28 | 2015-09-23 | 南华大学 | Bridge pier stud flow guide device |
| CN105672119A (en) * | 2016-01-14 | 2016-06-15 | 中铁大桥勘测设计院集团有限公司 | Anti-collision beam and anti-collision device with anti-collision beam |
| CN205704611U (en) * | 2016-05-09 | 2016-11-23 | 许昌五星实业有限责任公司 | A kind of leakproof separating type die for heat insulation building block molding |
| CN205776080U (en) * | 2016-07-12 | 2016-12-07 | 南京万通城市建设设计咨询有限公司 | A kind of city river shore protection |
| CN109083194A (en) * | 2018-09-06 | 2018-12-25 | 东北大学 | A kind of precast concrete pipe gallery junction extruding type close-up method |
| CN208451894U (en) * | 2018-04-27 | 2019-02-01 | 中交路桥北方工程有限公司 | A kind of beam making bench guaranteeing beam bottom portion presentation quality |
| CN110080258A (en) * | 2019-05-09 | 2019-08-02 | 河南传衡建设工程有限公司 | River channel helps slope gallery type fast assembling-disassembling combined cofferdam |
| JP2020037823A (en) * | 2018-09-05 | 2020-03-12 | 鹿島建設株式会社 | Construction method and precast member |
| CN111764349A (en) * | 2020-06-30 | 2020-10-13 | 黄河水利委员会黄河机械厂 | Mounting method of pier diversion device |
| CN212153269U (en) * | 2020-04-30 | 2020-12-15 | 陕西水环境工程勘测设计研究院 | Make river course view surface of water silt reducing equipment of installation fast |
| CN212405017U (en) * | 2019-12-25 | 2021-01-26 | 山东交通学院 | Assembled stagnant water structure for hydraulic engineering |
| CN215053237U (en) * | 2020-12-31 | 2021-12-07 | 福建和砼新材料科技有限公司 | Building block and inspection well using same |
| CN114000469A (en) * | 2021-11-30 | 2022-02-01 | 中国农业科学院农业资源与农业区划研究所 | Self-adaptive water-saving irrigation and drainage system for farmland for non-point source pollution prevention and control |
-
2022
- 2022-04-19 CN CN202210411403.XA patent/CN114775509B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202360988U (en) * | 2011-11-18 | 2012-08-01 | 上海交通大学 | External resistance reducing and stream guiding hood of pipeline |
| CN203049616U (en) * | 2013-01-17 | 2013-07-10 | 杨芳芳 | Novel prefabricated building block used for assembling well bore wall |
| CN103161139A (en) * | 2013-01-31 | 2013-06-19 | 株洲博尔曼科技发展有限公司 | Integrally assembled type flow guiding screen and construction method thereof |
| CN104929037A (en) * | 2015-04-28 | 2015-09-23 | 南华大学 | Bridge pier stud flow guide device |
| CN105672119A (en) * | 2016-01-14 | 2016-06-15 | 中铁大桥勘测设计院集团有限公司 | Anti-collision beam and anti-collision device with anti-collision beam |
| CN205704611U (en) * | 2016-05-09 | 2016-11-23 | 许昌五星实业有限责任公司 | A kind of leakproof separating type die for heat insulation building block molding |
| CN205776080U (en) * | 2016-07-12 | 2016-12-07 | 南京万通城市建设设计咨询有限公司 | A kind of city river shore protection |
| CN208451894U (en) * | 2018-04-27 | 2019-02-01 | 中交路桥北方工程有限公司 | A kind of beam making bench guaranteeing beam bottom portion presentation quality |
| JP2020037823A (en) * | 2018-09-05 | 2020-03-12 | 鹿島建設株式会社 | Construction method and precast member |
| CN109083194A (en) * | 2018-09-06 | 2018-12-25 | 东北大学 | A kind of precast concrete pipe gallery junction extruding type close-up method |
| CN110080258A (en) * | 2019-05-09 | 2019-08-02 | 河南传衡建设工程有限公司 | River channel helps slope gallery type fast assembling-disassembling combined cofferdam |
| CN212405017U (en) * | 2019-12-25 | 2021-01-26 | 山东交通学院 | Assembled stagnant water structure for hydraulic engineering |
| CN212153269U (en) * | 2020-04-30 | 2020-12-15 | 陕西水环境工程勘测设计研究院 | Make river course view surface of water silt reducing equipment of installation fast |
| CN111764349A (en) * | 2020-06-30 | 2020-10-13 | 黄河水利委员会黄河机械厂 | Mounting method of pier diversion device |
| CN215053237U (en) * | 2020-12-31 | 2021-12-07 | 福建和砼新材料科技有限公司 | Building block and inspection well using same |
| CN114000469A (en) * | 2021-11-30 | 2022-02-01 | 中国农业科学院农业资源与农业区划研究所 | Self-adaptive water-saving irrigation and drainage system for farmland for non-point source pollution prevention and control |
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| Publication number | Publication date |
|---|---|
| CN114775509B (en) | 2023-12-12 |
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| PB01 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 450000 North Zhengguang North Street and West Zhongwang Road, Zhengzhou area (Zhengdong), pilot Free Trade Zone, Zhengzhou City, Henan Province Applicant after: Henan Branch of China South to North Water Transfer group middle route Co.,Ltd. Applicant after: HENAN WATER & POWER ENGINEERING CONSULTING Co.,Ltd. Address before: 450000 North Zhengguang North Street and West Zhongwang Road, Zhengzhou area (Zhengdong), pilot Free Trade Zone, Zhengzhou City, Henan Province Applicant before: HENAN BRANCH OF CONSTRUCTION AND ADMINISTRATION BUREAU OF SOUTH-TO-NORTH WATER DIVERSION MIDDLE ROUTE PROJECT Applicant before: HENAN WATER & POWER ENGINEERING CONSULTING Co.,Ltd. |
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