CN104480903B - Concrete panel rock-fill dam panel parting structure and construction method thereof - Google Patents
Concrete panel rock-fill dam panel parting structure and construction method thereof Download PDFInfo
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- CN104480903B CN104480903B CN201410763722.2A CN201410763722A CN104480903B CN 104480903 B CN104480903 B CN 104480903B CN 201410763722 A CN201410763722 A CN 201410763722A CN 104480903 B CN104480903 B CN 104480903B
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- 238000010276 construction Methods 0.000 title claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000005489 elastic deformation Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000013536 elastomeric material Substances 0.000 description 3
- 210000003141 lower extremity Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011435 rock Substances 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a concrete panel rock-fill dam panel parting structure and a construction method thereof, belonging to the technical field of hydraulic engineering. According to the technical scheme, scientific and reasonable calculation is carried out on the panel parting joints on the concrete-faced rockfill dam, and the sum of the allowable elastic deformation widths of the panel parting joints is adopted to adapt to the longitudinal displacement of the dam, so that extrusion between the anti-seepage panels of the concrete-faced rockfill dam is avoided, and the effect of effectively avoiding the extrusion damage between the panels is achieved.
Description
Technical field
The invention belongs to hydraulic engineering technical field, relate to the concrete slab structure of a kind of hydraulic engineering dam, especially relate to a kind of Face Slab of Concrete-faced Rockfill parting structure and construction method thereof.
Background technology
Modern Water Conservancy engineering builds a dam into storehouse, CFRD is one of the most frequently used dam pattern, this kind of dam type upstream face is concrete slab, it it is rockfill after concrete slab, concrete slab is used for antiseepage dash, rockfill is used for undertaking water pressure, and therefore, concrete slab is the core texture in this kind of dam type.But, find during rock engineering operation built at home and abroad, there is the concrete slab of many engineerings all because between panel, parting is improper, there occurs the situation of extruding mutually between panel, even result in panel breakage, cause bigger economic loss, and give engineering bring bigger potential safety hazard, which results in the attention of hydraulic engineering circle.Trace it to its cause, mainly between counter plate, the understanding of importance of parting structure is unclear, counter plate parting is only based on the consideration of construction technology aspect, the seam width of parting does not do special requirement and special handling yet, when dam two sides are subjected to displacement (hereinafter referred to as length travel) along the axis of dam, namely can be squeezed between panel power effect, when this shift value reaches to a certain degree, when stress in concrete slab exceedes concrete intensity, concrete slab will produce extruding and destroy.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of Face Slab of Concrete-faced Rockfill parting structure and construction method thereof, thus reaching to avoid panel to suffer the effect that extruding destroys.
The present invention is achieved by following technical solution.
A kind of Face Slab of Concrete-faced Rockfill parting structure, including concrete slab and concrete toe board, described concrete toe board is positioned at concrete slab lower limb, described concrete slab is provided with some partings along concrete slab genesis analysis, described parting includes extruding vertical lap seam and tension vertical lap seam, described extruding vertical lap seam is positioned at concrete slab stage casing, is provided with elastic waterstop material in extruding vertical lap seam, and described tension vertical lap seam is positioned at concrete slab two ends.
A kind of Face Slab of Concrete-faced Rockfill parting construction method, comprises the steps:
(1) compressive region span access location length L is determined.Adopting engineering analog method or triaxiality deformation analysis method to analyze the duty of concrete slab, namely the length of compressive stress region N be panel compressive region span access location length L；
(2) dam body length travel B is determined.Engineering analog method or triaxiality deformation analysis method is adopted to analyze dam length travel B in the axial direction；
(3) parting width b is calculated.Owing to set elastic waterstop material in seam, parting width b is the width b that selected elastic waterstop material is compressed to the limit0The width b of deformation is allowed with it after compressing1Sum；
(4) parting bar number n is calculated.For meeting anti-extrusion condition, elastic waterstop material allows the width b of deformation1Sum, more than dam body length travel B, thus can obtain the minimum value of parting bar number n；Meanwhile, for meeting panel concrete slding form operation condition, panel piecemeal width S=L/n-1, thus namely can determine that suitable parting bar number n；
(5) parting is processed.In parting, fill elastic waterstop material, and by face dam routine anti-seepage method, parting is carried out Anti-seeping technology.
Further, in described step (3) parting width b value between 5～60mm.
Further, in described step (4), interval S value between parting is 10～18m.
The invention has the beneficial effects as follows:
A kind of Face Slab of Concrete-faced Rockfill parting structure of the present invention and construction method thereof, by the panel parting on CFRD is carried out scientific and reasonable calculating, parting between panel is adopted to allow elastic deformation width sum to adapt to the length travel of dam, to avoid extruding between concrete rock-fill dams face slab for water retaining, reach to be prevented effectively between panel and extruded the effect of destruction, improve the security performance of concrete rock-fill dams face slab for water retaining, save dam and run and maintenance cost；The technical program has sufficient theoretical foundation simultaneously, can be realized by simple computation and Construction control, has advantage that is structurally simple, economical and that be easy to construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the cross section structure schematic diagram of I-I in Fig. 1；
Fig. 3 is the structural representation at A place in Fig. 2.
In figure: 1-concrete slab, 2-concrete toe board, 3-extrudes vertical lap seam, 301-elastic waterstop material, 4-tension vertical lap seam.
Detailed description of the invention
Technical scheme is further described below in conjunction with accompanying drawing, but described in the scope claimed is not limited to.
As shown in Figure 1, Figure 2, Figure 3 shows, concrete slab 1 is divided into tensile region M and compressive region N by its duty, and tensile region M site distribution is at concrete slab about 1 two ends, and compressive region N site distribution is in concrete slab 1 central region.
A kind of Face Slab of Concrete-faced Rockfill parting structure of the present invention, including concrete slab 1 and concrete toe board 2, described concrete toe board 2 is positioned at concrete slab 1 lower limb and both sides of the edge, described concrete slab 1 is provided with some partings along concrete slab 1 genesis analysis, described parting includes extruding vertical lap seam 3 and tension vertical lap seam 4, described extruding vertical lap seam 3 is positioned at concrete slab 1 stage casing, being provided with elastic waterstop material 301 in extruding vertical lap seam 3, described tension vertical lap seam 4 is positioned at concrete slab 1 two ends.
A kind of Face Slab of Concrete-faced Rockfill parting construction method in the technical program, it is reserve when concrete slab 1 compressive region N arranges parting to stitch width accordingly, make the seamed wide sum of institute more than dam length travel, to avoid extruding between panel seam, thus preventing to extrude between panel the generation of destruction.
Embodiment
A kind of Face Slab of Concrete-faced Rockfill parting construction method, including determining compressive region span access location length, determine length travel, calculate parting width, calculate parting bar number and parting carrying out processing step, specific as follows:
(1) compressive region span access location length L is determined.Adopting engineering analog method or triaxiality deformation analysis method to analyze the duty of concrete slab, the length of compressive stress region N is compressive region span access location length L；
(2) dam body length travel B is determined.Engineering analog method or triaxiality deformation analysis method is adopted to analyze dam length travel B in the axial direction.
(3) parting width b is calculated.For ease of construction, seam width can not be too little, can not be too big, and most crack width is taken as 5mm, maximum seam width 60mm, in order to sets in seam and carries out Anti-seeping technology on elastomeric material and opposite joint.Namely parting width b span is 5～60mm.The formula that is specifically defined of the wide b of seam is:
B=b0+b1(formula 1)
In formula:
B parting width (mm)；
b0Elastomeric material is compressed to the width (mm) of the limit；
b1The width (mm) of deformation is allowed after elastomeric material compression.
(4) parting bar number n is calculated.For meeting anti-extrusion condition, parting width should meet the requirement of following formula, it may be assumed that
n(b-b0) B or n × b1B (formula 2)
In formula:
N extrusion slot parting bar number；
B dam body length travel (mm).
Simultaneously for meeting panel concrete slding form operation condition, panel piecemeal width S is taken as 10～18m, and panel piecemeal width S should meet the requirement of following formula, it may be assumed that
S=L/n-1 (formula 3)
In formula:
S concrete slab crush zone piecemeal width (m)；
L panel compressive region length (m).
Above-mentioned (formula 1), (formula 2) and (formula 3) is utilized namely to can determine that suitable parting bar number n.
(5) parting is processed.In parting, fill high-compressibility filler, and by face dam routine anti-seepage method, parting is carried out Anti-seeping technology.
When dam body length travel is in opposite direction, above-mentioned steps is utilized to repeat rightabout design and construct.
Embodiments of the present invention are not limited to above-described embodiment, and the various changes made under the premise without departing from present inventive concept belong within protection scope of the present invention.
Claims (3)
1. a Face Slab of Concrete-faced Rockfill parting construction method, it is characterised in that comprise the steps:
(1) determining compressive region span access location length L, adopt engineering analog method or triaxiality deformation analysis method to analyze the duty of concrete slab, namely the length of compressive stress region N be panel compressive region span access location length L；
(2) determine dam body length travel B, adopt engineering analog method or triaxiality deformation analysis method to analyze dam length travel B in the axial direction；
(3) calculating parting width b, owing to set elastic waterstop material in seam, parting width b is the width b that selected elastic waterstop material is compressed to the limit0The width b of deformation is allowed with it after compressing1Sum；
(4) calculating parting bar number n, for meeting anti-extrusion condition, elastic waterstop material allows the width b of deformation1Sum, more than dam body length travel B, thus can obtain the minimum value of parting bar number n；Meanwhile, for meeting panel concrete slding form operation condition, panel piecemeal width S=L/n-1, thus namely can determine that suitable parting bar number n；
(5) parting is processed, in parting, fill elastic waterstop material, and by face dam routine anti-seepage method, parting is carried out Anti-seeping technology.
2. a kind of Face Slab of Concrete-faced Rockfill parting construction method according to claim 1, it is characterised in that: in described step (3), parting width b value is between 5～60mm.
3. a kind of Face Slab of Concrete-faced Rockfill parting construction method according to claim 1, it is characterised in that: in described step (4), the interval S value between parting is 10～18m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410763722.2A CN104480903B (en) | 2014-12-12 | 2014-12-12 | Concrete panel rock-fill dam panel parting structure and construction method thereof |
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| CN201410763722.2A CN104480903B (en) | 2014-12-12 | 2014-12-12 | Concrete panel rock-fill dam panel parting structure and construction method thereof |
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| CN104480903A CN104480903A (en) | 2015-04-01 |
| CN104480903B true CN104480903B (en) | 2016-07-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912035A (en) * | 2015-06-12 | 2015-09-16 | 中国电建集团贵阳勘测设计研究院有限公司 | Elastic connection structure of concrete panel vertical seam and construction method thereof |
| CN105297685B (en) * | 2015-11-23 | 2017-10-24 | 中国电建集团贵阳勘测设计研究院有限公司 | Base concrete panel rock-fill dam and construction method thereof |
| CN107180011B (en) * | 2016-03-10 | 2022-02-18 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for estimating unequal-width compressibility vertical seam width of concrete face rock-fill dam |
| CN107022980B (en) * | 2017-03-30 | 2019-03-05 | 中国电建集团贵阳勘测设计研究院有限公司 | Dam body of panel dam and deformation control and adaptation method of panel |
| CN110004886A (en) * | 2019-05-15 | 2019-07-12 | 中国电建集团中南勘测设计研究院有限公司 | Asphaltic concrete core wall basement construction method and its structure |
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| JPH0617431A (en) * | 1992-06-30 | 1994-01-25 | Sumitomo Rubber Ind Ltd | Joint sealant for civil engnieering concrete placing |
| CN101603299A (en) * | 2009-07-02 | 2009-12-16 | 中国水电顾问集团华东勘测设计研究院 | A kind of broken line type dam joint structure and job practices thereof |
| CN101906768A (en) * | 2010-08-19 | 2010-12-08 | 中国水电建设集团十五工程局有限公司 | Panel construction method of concrete faced rock-fill dam |
| CN203307776U (en) * | 2013-06-06 | 2013-11-27 | 中国水电顾问集团华东勘测设计研究院 | Concrete face rock fill dam toe board structure |
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2014
- 2014-12-12 CN CN201410763722.2A patent/CN104480903B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| JPH0617431A (en) * | 1992-06-30 | 1994-01-25 | Sumitomo Rubber Ind Ltd | Joint sealant for civil engnieering concrete placing |
| CN101603299A (en) * | 2009-07-02 | 2009-12-16 | 中国水电顾问集团华东勘测设计研究院 | A kind of broken line type dam joint structure and job practices thereof |
| CN101906768A (en) * | 2010-08-19 | 2010-12-08 | 中国水电建设集团十五工程局有限公司 | Panel construction method of concrete faced rock-fill dam |
| CN203307776U (en) * | 2013-06-06 | 2013-11-27 | 中国水电顾问集团华东勘测设计研究院 | Concrete face rock fill dam toe board structure |
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