CN111139794B - Concrete panel dam void meter mounting structure type and construction method thereof - Google Patents
Concrete panel dam void meter mounting structure type and construction method thereof Download PDFInfo
- Publication number
- CN111139794B CN111139794B CN202010053517.2A CN202010053517A CN111139794B CN 111139794 B CN111139794 B CN 111139794B CN 202010053517 A CN202010053517 A CN 202010053517A CN 111139794 B CN111139794 B CN 111139794B
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- concrete
- void
- steel plate
- welded
- dam
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- 239000011800 void material Substances 0.000 title claims abstract description 67
- 238000010276 construction Methods 0.000 title abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 69
- 239000010959 steel Substances 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003466 welding Methods 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
- 230000035699 permeability Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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 meter mounting structure type and a construction method thereof, comprising rolling a complete bedding material, wherein a groove is arranged in the bedding material and is used as a void meter mounting space; a concrete fixed pier is buried below the groove, a steel plate fixed support is buried at the top of the concrete fixed pier in advance, and the bottom of the void meter is welded on the steel plate fixed support; the top end of the void meter is welded on a top fixed steel plate, and C20 connecting steel bars are arranged above the top fixed steel plate and are welded with the panel stress steel bars of the concrete panel dam; and the surface of the void meter is wrapped with a geomembrane. The installation structure type of the void meter can ensure that the void meter is firmly connected with the cushion material and the panel, fully plays the monitoring role, and has stronger use value, better social benefit and economic benefit.
Description
Technical Field
The invention relates to a concrete panel dam void meter mounting structure type, and belongs to the technical field of hydraulic and hydroelectric engineering monitoring.
Background
The concrete panel dam body is required to be partitioned according to the requirements of a source, dam material strength, permeability, compressibility, construction convenience, economic rationality and the like; the concrete face plate dam, the cushion layer area, the transition area, the main rock-fill area and the secondary rock-fill area are sequentially arranged from the upstream to the downstream. After the dam body is filled, in the later running process, as the rigidity difference of the panel, the cushion material and the rock-fill body is larger, under the action of dead weight and water load, the water facing surface can generate deformation of the lower part protruding outwards and the upper part sinking outwards, namely, the void phenomenon is generated between the concrete panel dam and the cushion material, if the void deformation is larger, the panel is pulled apart to generate leakage, and the crisis dam is safe, so an effective monitoring method is urgently needed to intuitively know the void condition between the panel and the cushion material. At present, a void meter is generally adopted to monitor the void condition between the panel and the cushion material.
In the prior art, an invention patent (CN 106192908A) applied by China water conservancy and hydropower eleventh engineering agency, inc. discloses a system for preventing a concrete panel and a rock-fill dam body from being emptied, which comprises a grouting pipeline and an empty meter which are arranged between the concrete panel and a rock-fill dam body cushion material, wherein the empty meter is connected with a computer arranged outside the rock-fill dam body, an early warning module is arranged in the computer and is used for comparing displacement data between the concrete panel and the rock-fill dam body cushion material measured by the empty meter with an early warning mechanism preset in the early warning module, and when the measured displacement data meet the requirement of the early warning mechanism, the early warning module sends out corresponding warning. The scheme can monitor the void condition between the concrete panel and the rock-fill dam body in real time and can make real-time early warning for the condition.
However, the prior art does not take into account the following problems: there are differences due to the mounting process. The later stage of the partial engineering void meter cannot effectively monitor the void condition between the panel and the cushion material, so that the actual operation state of the panel dam cannot be known.
Disclosure of Invention
The invention aims to provide a concrete panel dam void meter installation structure and a construction method thereof, so that reliable void monitoring data are obtained, the void condition between a panel and cushion materials is better mastered, and the long-term safe operation of the concrete panel dam is ensured.
The invention is realized in the following way: the concrete panel dam void meter installing structure comprises a completely rolled bedding material, wherein a groove is formed in the bedding material and is used as a void meter installing space; a concrete fixed pier is buried below the groove, a steel plate fixed support is buried at the top of the concrete fixed pier in advance, and the bottom of the void meter is welded on the steel plate fixed support; the top end of the void meter is welded on a top fixed steel plate, and C20 connecting steel bars are arranged above the top fixed steel plate and are welded with the panel stress steel bars of the concrete panel dam; and the surface of the void meter is wrapped with a geomembrane.
Compared with the prior art, the invention has the advantages that: the installation structure type of the void meter can ensure that the void meter is firmly connected with the cushion material and the panel, fully plays the monitoring role, and has stronger use value, better social benefit and economic benefit.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a plan view of the top steel plate and connecting bars of the void meter of the present invention;
FIG. 3 is a cross-sectional view of the top steel plate and connecting bars of the void meter of the present invention;
Fig. 4 is a construction diagram of the concrete anchor pier and steel plate anchor mount and dowel bar of the present invention.
The marks in the drawings are: 1-concrete fixed piers, 2-C20 dowel bars, 3-steel plate fixed supports, 4-top fixed steel plates, 5-C20 connecting steel bars, 6-void meters, 7-geomembranes, 8-concrete panel dams, 9-panel stress steel bars, 10-void meter cables, 11-backfill bedding materials, 12-bedding materials and 13-grooves.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is implemented as follows:
The invention adopts concrete, steel bars, steel plates, a geomembrane 7 and a void meter 6 to form a novel void meter installation structure type for monitoring the void condition between a concrete face dam 8 and a bedding material 12. The invention adopts concrete, steel bar, steel plate, geotextile, seam meter and the like as the required materials, is easy to process, has simple structure and convenient and quick construction, and can easily achieve the purpose.
The implementation process of the installation structure type of the invention is as follows: (1) Firstly, a groove 13 with proper size is dug on the fully rolled bedding material 12 through manual operation, and the groove is used as a space for installing the void meter 6. (2) The concrete fixed pier 1 with the size of 0.5 multiplied by 0.5m is poured by adopting C20 concrete, and the concrete fixed pier 1 is buried in the filled bedding material 12. (3) The bottom of the void meter 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-buried in the concrete fixing pier 1 in advance, and the steel plate fixing support 3 is welded with 3C 20 dowel bars 2 buried in the concrete fixing pier 1 together, so that the void meter 6 and the concrete fixing pier 1 are firmly combined. (4) The end part of the void meter 6 is welded on a top fixed steel plate 4 with the thickness of 2cm, a C20 connecting steel bar 5 is welded on the top fixed steel plate 4, and the C20 connecting steel bar 5 and a panel stress steel bar 9 are welded together, so that the end part of the void meter 6 is firmly combined with the concrete panel dam 8. (5) The surface of the void meter 6 is wrapped with the geomembrane 7, so that the particles of the cushion material 12 are prevented from entering the void meter 6, and the function of the void meter 6 is influenced. (6) After the void meter 6 is installed, the groove 13 is filled with backfill cushion material 11, and is tamped manually. The specific structure is shown in figures 1-4.
Related description: (1) The concrete fixed pier 1 is of a concrete structure, and the length, width and height are 0.5 multiplied by 0.5m; (2) The lengths of the C20 dowel bars 2 in the concrete fixed piers 1 are 0.4m, and the included angles are 30 degrees; (3) The thickness of the steel plate fixing support 3 pre-buried in the concrete fixing pier 1 is 1cm, and the length and width are respectively 0.2m; (4) The thickness of the top fixed steel plate 4 is 2cm, and the length and width are respectively 0.6m. (5) C20 connecting steel bars 5 are welded on the top fixed steel plate 4, the length of the C20 connecting steel bars 5 is properly adjusted according to the distance from the top fixed steel plate 4 to the panel stress steel bars 9 in the concrete panel dam 8, the distance is generally 0.2m, and the C20 connecting steel bars 5 are of rectangular structures and are convenient to weld with the top fixed steel plate 4 and the panel stress steel bars 9.
Notice that: (1) The steel plate fixing support 3 is firmly welded with the C20 dowel bar 2, and is pre-buried on the surface of the steel plate fixing support when the concrete fixing pier 1 is manufactured; and (2) the bottom of the void gauge 6 is firmly welded with the steel plate fixing support 3. And (3) the end part of the void meter 6 is firmly welded with the top fixed 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 steel bars 5 are connected with the panel stress steel bars 9 through peripheral welding. (6) the surface of the void meter 6 must be wrapped with a geomembrane 7.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (9)
1. A concrete panel dam void meter mounting structure type, its characterized in that: comprises a fully rolled bedding material (12), wherein a groove (13) is arranged in the bedding material (12) as a space for installing a void meter (6); a concrete fixed pier (1) is buried below the groove (13), a steel plate fixed support (3) is buried at the top of the concrete fixed pier (1), and the bottom of the void gauge (6) is welded on the steel plate fixed support (3); the top end of the void gauge (6) is welded on a top fixed steel plate (4), an arranged C20 connecting steel bar (5) is arranged above the top fixed steel plate (4), and the C20 connecting steel bar (5) is welded with a panel stress steel bar (9) of the concrete panel dam (8); the surface of the void meter (6) is wrapped with a geomembrane (7).
2. The concrete face dam void meter mounting structure pattern according to claim 1, wherein: every two of the void meters (6) are arranged in an equilateral triangle shape with the top fixed steel plate (4).
3. The concrete face dam void meter mounting structure pattern according to claim 1, wherein: the groove (13) is filled with a backfill bedding material (11), and the void gauge cable (10) is buried in the backfill bedding material (11) and pulled outwards.
4. The concrete face dam void meter mounting structure pattern according to claim 1, wherein: c20 dowel bars (2) are arranged in the concrete fixed piers (1), and the C20 dowel bars (2) are welded with the steel plate fixed support (3).
5. The concrete face dam void meter mounting structure pattern according to claim 1, wherein: the length, width and height of the concrete fixed pier (1) are 0.5 multiplied by 0.5m; the lengths of the C20 dowel bars (2) in the concrete fixed piers (1) are 0.4m, and the dowel bars are arranged according to an included angle of 30 degrees.
6. The concrete face dam void meter mounting structure pattern according to claim 1, wherein: the thickness of the steel plate fixing support (3) pre-buried in the concrete fixing pier (1) is 1cm, and the length and the width are respectively 0.2m.
7. The concrete face dam void meter mounting structure pattern according to claim 1, wherein: the top fixed steel plate (4) is positioned in the concrete face plate dam (8), the thickness is 2cm, and the length and the width are respectively 0.6m.
8. The concrete face dam void meter mounting structure pattern according to 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 face dam void meter mounting structure of the type described in claims 1-8, comprising the steps of:
1) firstly digging a groove (13) on the fully rolled bedding material (12) through manual operation, and taking the groove as a space for installing a void meter (6);
2) Adopting C20 concrete to pour into a concrete fixed pier (1) with the size of 0.5 multiplied by 0.5m, wherein the concrete fixed pier (1) is buried in the filled bedding material (12);
3) The bottom of a 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-buried in a concrete fixing pier (1) in advance, and the steel plate fixing support (3) is welded with 3C 20 dowel bars (2) buried in the concrete fixing pier (1);
4) The upper end part of the void gauge (6) is welded on a top fixed steel plate (4) with the thickness of 2cm, C20 connecting steel bars (5) are welded on the top fixed steel plate (4), and the C20 connecting steel bars (5) are welded with panel stress steel bars (9) in the concrete panel dam (8);
5) The surface of the void meter (6) is wrapped with a geomembrane (7);
6) After the installation of the void meter (6) is completed, the groove (13) is filled with 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN111139794A CN111139794A (en) | 2020-05-12 |
| CN111139794B true CN111139794B (en) | 2024-06-25 |
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| CN202010053517.2A Active CN111139794B (en) | 2020-01-17 | 2020-01-17 | Concrete panel dam void meter mounting structure type and construction method thereof |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212405024U (en) * | 2020-01-17 | 2021-01-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Concrete panel dam void gauge mounting structure type |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3750043B2 (en) * | 1998-06-10 | 2006-03-01 | 清水建設株式会社 | Large section underground hollow quarry |
| AU5805301A (en) * | 2000-05-19 | 2001-12-03 | Roger Auzon | Support chair for reinforcing rods in reinforced concrete |
| CN1186588C (en) * | 2000-11-24 | 2005-01-26 | 水利部交通部电力工业部南京水利科学研究院 | Remotely-measuring remotelly-controlled rertical displacement meter |
| JP4953430B2 (en) * | 2006-09-19 | 2012-06-13 | 国際航業株式会社 | Dam external deformation evaluation method, evaluation device, and evaluation program |
| CN201034748Y (en) * | 2007-03-06 | 2008-03-12 | 秦一涛 | Dam des-empty positioning inspect distributed optical fiber temperature sensor device |
| CN104988884B (en) * | 2015-05-19 | 2017-03-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Mounting method of void deformation monitoring device for face plate rock-fill dam |
| CN105297680B (en) * | 2015-11-29 | 2017-10-13 | 中国水利水电科学研究院 | A kind of 200m grades of high CFRD impervious body Seismic Design Method |
| CN106192908A (en) * | 2016-07-27 | 2016-12-07 | 中国水利水电第十工程局有限公司 | A kind of system preventing concrete slab and Rockfill Dam from coming to nothing and construction method |
| CN107131862B (en) * | 2017-06-23 | 2022-02-11 | 中国电建集团贵阳勘测设计研究院有限公司 | Rock-fill dam panel deformation monitoring device and construction method |
| CN107938727B (en) * | 2017-12-26 | 2023-03-14 | 中国电建集团贵阳勘测设计研究院有限公司 | Longitudinal horizontal displacement meter anchoring end mounting structure and construction method |
| CN109579756A (en) * | 2018-11-21 | 2019-04-05 | 国电南瑞科技股份有限公司 | A kind of crack three direction displacement monitoring measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212405024U (en) * | 2020-01-17 | 2021-01-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Concrete panel dam void gauge mounting structure type |
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