CN111139794A - Concrete panel dam void gauge mounting structure type and construction method thereof - Google Patents
Concrete panel dam void gauge mounting structure type and construction method thereof Download PDFInfo
- Publication number
- CN111139794A CN111139794A CN202010053517.2A CN202010053517A CN111139794A CN 111139794 A CN111139794 A CN 111139794A CN 202010053517 A CN202010053517 A CN 202010053517A CN 111139794 A CN111139794 A CN 111139794A
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- concrete
- steel plate
- void
- void gauge
- fixing
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- 239000011800 void material Substances 0.000 title claims abstract description 63
- 238000010276 construction Methods 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000003466 welding Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a concrete panel dam void gauge mounting structure and a construction method thereof, wherein the concrete panel dam void gauge mounting structure comprises a cushion material which is completely rolled, and a groove is arranged in the cushion material and is used as a void gauge mounting space; a concrete fixing pier is embedded below the groove, a steel plate fixing support is embedded in the top of the concrete fixing pier, and the bottom of the air release meter is welded on the steel plate fixing support; the top end part of the void gauge is welded on a top fixed steel plate, C20 connecting steel bars are arranged above the top fixed steel plate, and the C20 connecting steel bars are welded with the panel stress steel bars of the concrete panel dam; and the surface of the void gauge is wrapped with a geomembrane. The mounting structure of the void gauge can ensure that the void gauge is firmly connected with the bedding material and the panel, fully plays the monitoring role, and has strong use value and good social and economic benefits.
Description
Technical Field
The invention relates to a concrete face dam void gauge mounting structure, and belongs to the technical field of hydraulic and hydroelectric engineering monitoring.
Background
The dam body of the concrete face dam needs to be partitioned according to the requirements of material source, dam material strength, permeability, compressibility, convenience in construction, economic rationality and the like; the concrete slab, the bedding zone, the transition zone, the main rockfill zone and the secondary rockfill zone are arranged from upstream to downstream in sequence. After the dam body is filled, in the later operation process, due to the fact that the rigidity difference of the face plate, the bedding material and the rock-fill body is large, under the action of self weight and water load, the upstream face can generate deformation of the lower portion, the upper portion protrudes outwards and is sunken, namely, the phenomenon of void is generated between the concrete face plate and the bedding material, if the deformation of void is large, the face plate is pulled to crack, leakage is generated, and the safety of the critical dam is high, so that an effective monitoring method is urgently needed for visually knowing the void condition between the face plate and the bedding material. At present, a void gauge is generally adopted to monitor the void condition between a panel and a bedding material.
In the prior art, an invention patent (CN106192908A) applied by the eleventh engineering administration of water conservancy and hydropower limited in china discloses a system for preventing a concrete face plate and a rock-fill dam body from being separated from each other, which comprises a grouting pipeline and a separation meter arranged between the concrete face plate and a bedding material of the rock-fill dam body, wherein the separation meter is connected with a computer arranged outside the rock-fill dam body, an early warning module is arranged in the computer, the early warning module is used for comparing displacement data between the concrete face plate and the bedding material of the rock-fill dam body, which is measured by the separation meter, with an early warning mechanism preset in the early warning module, and when the measured displacement data meets the requirements of the early warning mechanism, the early warning module sends out corresponding warning. The scheme can monitor the void condition between the concrete face plate and the rock-fill dam body in real time and can give real-time early warning to the condition.
However, the prior art does not consider the following problems: there are differences due to the mounting process. The later stage of the partial engineering void gauge cannot effectively monitor the void condition between the face plate and the bedding material, so that the actual operation state of the face plate dam cannot be known.
Disclosure of Invention
The invention aims to provide a concrete panel dam void gauge mounting structure and a construction method thereof, so that reliable void monitoring data can be obtained, the void condition between a panel and a bedding material can be better mastered, and long-term safe operation of the concrete panel dam can be ensured.
The invention is realized by the following steps: a concrete panel dam void gauge mounting structure comprises a cushion material which is completely rolled, wherein a groove is arranged in the cushion material and is used as a void gauge mounting space; a concrete fixing pier is embedded below the groove, a steel plate fixing support is embedded in the top of the concrete fixing pier, and the bottom of the air release meter is welded on the steel plate fixing support; the top end part of the void gauge is welded on a top fixed steel plate, C20 connecting steel bars are arranged above the top fixed steel plate, and the C20 connecting steel bars are welded with the panel stress steel bars of the concrete panel dam; and the surface of the void gauge is wrapped with a geomembrane.
Compared with the prior art, the invention has the advantages that: the mounting structure of the void gauge can ensure that the void gauge is firmly connected with the bedding material and the panel, fully plays the monitoring role, and has strong use value and good social and economic benefits.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a plan view of a steel plate and connecting bars at the top of the sonde of the present invention;
FIG. 3 is a cross-sectional view of the steel plate and the connecting reinforcement at the top of the void gauge of the present invention;
FIG. 4 is a structural diagram of the concrete anchor blocks, steel plate fixing supports and joint bars of the present invention.
The labels in the figures are: the concrete-filled steel plate-concrete hollow floor slab comprises, by weight, 1-a concrete fixing pier, 2-C20 dowel bars, 3-a steel plate fixing support, 4-a top fixing steel plate, 5-C20 connecting steel bars, 6-a void gauge, 7-a geomembrane, 8-a concrete panel, 9-panel stress steel bars, 10-a void gauge cable, 11-a backfill cushion material, 12-a cushion material and 13-a groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is implemented as follows:
the invention adopts concrete, steel bars, steel plates, geomembrane 7 and a void gauge 6 to form a novel void gauge mounting structure type which is used for monitoring the void condition between a concrete panel 8 and a bedding material 12. The materials required by the invention are concrete, steel bars, steel plates, geotextile, joint gauges and the like, the processing is easy, the structure is simple, the construction is convenient and fast, and the aim can be easily realized.
The implementation process of the installation structure of the invention is as follows: (1) firstly, a groove 13 with a proper size is dug on the fully-rolled bedding material 12 through manual operation to be used as a space for installing the void gauge 6. (2) C20 concrete is poured into a concrete fixed pier 1 with the size of 0.5 multiplied by 0.5m, and the concrete fixed pier 1 is buried in the filled bedding material 12. (3) The bottom of the void gauge 6 is welded on a steel plate fixing support 3 with the thickness of 1cm and the length and width of 0.2m respectively, the steel plate fixing support 3 is pre-embedded in the concrete fixing pier 1 in advance, and the steel plate fixing support 3 is welded with 3C 20 joint bars 2 embedded in the concrete fixing pier 1, so that the void gauge 6 is firmly combined with the concrete fixing pier 1. (4) The end part of the void gauge 6 is welded on the top fixing steel plate 4 with the thickness of 2cm, the C20 connecting steel bar 5 is welded on the top fixing steel plate 4, and the C20 connecting steel bar 5 is welded with the panel stress steel bar 9, so that the end part of the void gauge 6 is firmly combined with the concrete panel 8. (5) The surface of the void gauge 6 is wrapped with the geomembrane 7, so that the particles of the bedding material 12 are prevented from entering the void gauge 6, and the function of the void gauge 6 is prevented from being influenced. (6) After the installation of the void gauge 6 is finished, the groove 13 is filled with the backfill cushion material 11 and is tamped manually. The specific structure is shown in figures 1-4.
Description of related Art: (1) the concrete fixing pier 1 is of a concrete structure, and the length, the width and the height are 0.5 multiplied by 0.5 m; (2) the lengths of the C20 joint bars 2 in the concrete fixing pier 1 are all 0.4m, and the included angle is 30 degrees; (3) the thickness of a steel plate fixing support 3 pre-embedded in the concrete fixing pier 1 is 1cm, and the length and the width are 0.2m respectively; (4) the top fixed steel plate 4 has a thickness of 2cm and a length and a width of 0.6m, respectively. (5) The C20 connecting reinforcement 5 of welding on the fixed steel sheet 4 in top, C20 connecting reinforcement 5 length carry out suitable adjustment according to the fixed steel sheet 4 in top to the distance of the panel atress reinforcing bar 9 in the concrete panel 8, are 0.2m generally, and C20 connecting reinforcement 5 adopts the rectangle structure, is convenient for weld together with fixed steel sheet 4 in top, panel atress reinforcing bar 9.
Note that: (1) the steel plate fixing support 3 is firmly welded with the C20 dowel bar 2 and is pre-embedded on the surface of the manufactured concrete fixing pier 1; (2) the bottom of the void gauge 6 is firmly welded with the steel plate fixing support 3. (3) The end part of the void gauge 6 is firmly welded with the top fixing steel plate 4. (4) The C20 connecting bars 5 on the surface of the top fixing steel plate 4 are fixed on the top fixing steel plate 4 by peripheral welding. (5) The C20 connecting bar 5 is connected to the panel stressing bar 9 by perimeter welding. (6) The surface of the void gauge 6 must be wrapped with a geomembrane 7.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a concrete panel dam void gauge mounting structure type which characterized in that: the device comprises a cushion material (12) which is completely rolled, wherein a groove (13) is arranged in the cushion material (12) and is used as a space for installing a void gauge (6); a concrete fixing pier (1) is buried below the groove (13), a steel plate fixing support (3) is buried in the top of the concrete fixing pier (1), and the bottom of the air release meter (6) is welded on the steel plate fixing support (3); the top end of the void gauge (6) is welded on a top fixed steel plate (4), C20 connecting steel bars (5) are arranged above the top fixed steel plate (4), and the C20 connecting steel bars (5) are welded with panel stress steel bars (9) of a concrete panel dam (8); the surface of the void gauge (6) is wrapped with a geomembrane (7).
2. The concrete panel dam void gauge mounting structure of claim 1, wherein: every two of the void meters (6) and the top fixing steel plate (4) are arranged in an equilateral triangle shape.
3. The concrete panel dam void gauge mounting structure of claim 1, wherein: and a backfill cushion material (11) is filled in the groove (13), and the release meter cable (10) is buried in the backfill cushion material (11) and is pulled outwards.
4. The concrete panel dam void gauge mounting structure of claim 1, wherein: the concrete fixing pier (1) is internally provided with a C20 dowel bar (2), and the C20 dowel bar (2) is welded with the steel plate fixing support (3).
5. The concrete panel dam void gauge mounting structure of claim 1, wherein: the length, the width and the height of the concrete fixing pier (1) are 0.5 multiplied by 0.5 m; the lengths of the C20 steel dowels (2) in the concrete fixing piers (1) are all 0.4m and are arranged according to the included angle of 30 degrees.
6. The concrete panel dam void gauge mounting structure of claim 1, wherein: the thickness of the steel plate fixing support (3) pre-embedded in the concrete fixing pier (1) is 1cm, and the length and the width of the steel plate fixing support are 0.2m respectively.
7. The concrete panel dam void gauge mounting structure of claim 1, wherein: the top fixing steel plate (4) is positioned in the concrete panel dam (8), the thickness of the top fixing steel plate is 2cm, and the length and the width of the top fixing steel plate are 0.6m respectively.
8. The concrete panel dam void gauge mounting structure of claim 1, wherein: the length of the C20 connecting steel bar (5) is 0.2m, and a rectangular structure is adopted.
9. A method of constructing a concrete panel dam void gauge mounting arrangement of the type defined in claims 1-8, comprising the steps of:
1) firstly, digging a groove (13) on a fully rolled bedding material (12) through manual operation to serve as a space for installing a void gauge (6);
2) c20 concrete is poured into a concrete fixed pier (1) with the size of 0.5 multiplied by 0.5m, and the concrete fixed pier (1) is buried in the filled bedding material (12);
3) welding the bottom of the void gauge (6) to a steel plate fixing support (3) with the thickness of 1cm and the length and width of 0.2m respectively, pre-embedding the steel plate fixing support (3) in the concrete fixing pier (1) in advance, and welding the steel plate fixing support (3) and 3C 20 inserted bars (2) embedded in the concrete fixing pier (1) together;
4) welding the upper end part of the void gauge (6) on a top fixed steel plate (4) with the thickness of 2cm, welding a C20 connecting steel bar (5) on the top fixed steel plate (4), and welding a C20 connecting steel bar (5) with a panel stress steel bar (9) in a concrete panel (8);
5) the surface of the void gauge (6) is wrapped with a geomembrane (7);
6) after the installation of the void gauge (6) is finished, the groove (13) is filled with a backfill cushion material (11) and is tamped manually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010053517.2A CN111139794B (en) | 2020-01-17 | 2020-01-17 | Concrete panel dam void meter mounting structure type and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010053517.2A CN111139794B (en) | 2020-01-17 | 2020-01-17 | Concrete panel dam void meter mounting structure type and construction method thereof |
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| Publication Number | Publication Date |
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| CN111139794A true CN111139794A (en) | 2020-05-12 |
| CN111139794B CN111139794B (en) | 2024-06-25 |
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