CN114232671B - Dam edge waterproof connecting body and construction method thereof - Google Patents
Dam edge waterproof connecting body and construction method thereof Download PDFInfo
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- CN114232671B CN114232671B CN202111633320.7A CN202111633320A CN114232671B CN 114232671 B CN114232671 B CN 114232671B CN 202111633320 A CN202111633320 A CN 202111633320A CN 114232671 B CN114232671 B CN 114232671B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/40—Foundations for dams across valleys or for dam constructions
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- 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
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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
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Abstract
The invention discloses a dam edge waterproof connecting body and a construction method thereof, and belongs to the technical field of dike body waterproofing. This connector includes road bed and dam foundation, be equipped with waterproof construction between dam foundation and the road bed, be equipped with first waterproof component between waterproof construction and the road bed, be equipped with second waterproof component between waterproof construction's upper portion and the dam foundation, waterproof construction's top is equipped with top layer waterproof component, the surface laying layer has been laid at road bed, dam foundation and waterproof construction's top. Surface water is blocked by the waterproof geotextile, the arc-shaped cover plate and the waterproof rubber plate, so that the surface water is prevented from entering a waterproof structure; the water on one side of the roadbed is blocked for the first time through the first waterproof plate, so that the external water on one side of the roadbed is prevented from permeating into the waterproof structure; a small amount of water in the waterproof structure is discharged through the drain hole and the drain through hole; and finally, the second waterproof plate is used for secondarily blocking water in the top concrete block, so that the anti-seepage effect is good.
Description
Technical Field
The invention relates to a dam edge waterproof connecting body and a construction method thereof, belonging to the technical field of dike body waterproofing.
Background
The existing dike and a roadbed beside the existing dike are generally connected by directly pouring concrete, but the poured concrete is displaced or cracked due to reasons such as roadbed settlement, so that outside water enters the dike body and corrodes materials such as reinforcing steel bars in the dike body, and the service life of the dike is influenced.
The Chinese patent document with the publication number of CN212582603U discloses a dike body joint water stop structure, which comprises a dike body and a side wall, wherein the surface of the dike body is sequentially provided with a gravel stone cushion layer, a first composite geomembrane, sand-free concrete and a concrete precast block from bottom to top; the concrete wall pile and the side wall are also provided with inserted bars, and the inserted bars are connected with the concrete wall pile and the side wall. The concrete wall pile with the second composite geomembrane is reserved around the through-dyke building when concrete is poured, the first composite geomembrane in the cohesionless soil dike is spliced with the second composite geomembrane in the concrete wall pile, the seepage-proofing performance of the joint of the through-dyke building and the dyke body can be greatly improved, the non-uniform deformation of the cohesionless soil dike and the rigid through-dyke building can be fully adapted, and the connection strength can be ensured by the connection of the inserted bars.
However, if the dyke body joint water-stopping structure is applied to the seepage-proofing connection of the dyke and the side roadbed, the external water can enter the dyke body because the water-stopping structure can not stop the external water permeating from the side of the circuit foundation, and the corrosion is generated on materials such as reinforcing steel bars in the dyke body, so that the service life of the dyke is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a dam edge waterproof connecting body and a construction method thereof.
The invention is realized by the following technical scheme:
the utility model provides a dykes and dams edge waterproof connector, includes road bed and dam foundation, be equipped with waterproof construction between dam foundation and the road bed, be equipped with first waterproof component between waterproof construction and the road bed, be equipped with second waterproof component between waterproof construction's upper portion and the dam foundation, waterproof construction's top is equipped with top layer waterproof component, the surperficial shop layer has been laid at road bed, dam foundation and waterproof construction's top.
The waterproof structure comprises a bottom concrete block and a top concrete block arranged on the bottom concrete block.
The bottom concrete block and the top concrete block are made of waterproof concrete.
The both sides integrated into one piece at top concrete piece top is equipped with the arch, and bellied bottom is equipped with a plurality of wash port, and the lower part of top concrete piece is equipped with drainage through hole and a plurality of V font guiding gutter, and the middle part of a plurality of V font guiding gutter all communicates with drainage through hole, and wash port and drainage through hole all run through top concrete piece.
And a plurality of prestressed reinforcements are arranged in the top concrete block and are V-shaped.
First waterproof assembly includes first waterproof board and waterproof rubber board, and between road bed and bottom concrete piece, the top concrete piece was located to first waterproof board, and waterproof rubber board is located between arch and the road bed, and this waterproof rubber board and first waterproof board lie in same one side of top concrete piece.
And a cushion pad is also arranged between the first waterproof plate and the roadbed.
The second waterproof assembly comprises a second waterproof plate and a waterproof rubber plate, the second waterproof plate is arranged between the top concrete block and the dam foundation, the waterproof rubber plate is arranged between the bulge and the dam foundation, and the waterproof rubber plate and the second waterproof plate are located on the same side of the top concrete block.
The top layer waterproof assembly comprises waterproof geotextile and two arc-shaped cover plates, the waterproof geotextile is laid at the top of the waterproof structure, and the two arc-shaped cover plates are arranged at the butt joint of the waterproof structure and the roadbed and the dam foundation in a one-to-one correspondence mode.
A construction method of a dam edge waterproof connecting body comprises the following main steps:
A. when the dam foundation is constructed, connecting reinforcing steel bars extend from the bottom of one side, close to the roadbed, of the dam foundation, and the cushion pad and the first waterproof plate are fixed on one side, close to the dam foundation, of the roadbed;
B. pouring a bottom concrete block until the concrete covers all the connecting steel bars;
C. after the bottom concrete block reaches the designed strength, binding a plurality of prestressed reinforcements above the bottom concrete block to form a plurality of reinforcement cages, fixing a steel pull pipe A for manufacturing a V-shaped diversion trench and a drainage through hole at the top of the bottom concrete block, fixing a waterproof rubber plate and a steel pull pipe B for manufacturing a drainage hole at the tops of the roadbed and the dam foundation, fixing a second waterproof plate at one side of the dam foundation close to the roadbed, and then pouring a top concrete block and a bulge;
D. pulling out the steel drawing pipe A and the steel drawing pipe B after the top concrete block is basically initially set;
E. and after the top concrete block reaches the design strength, laying waterproof geotextile, installing an arc cover plate, and finishing surface laying construction.
The invention has the beneficial effects that:
1. surface water is blocked by the waterproof geotextile, the arc-shaped cover plate and the waterproof rubber plate, so that the surface water is prevented from entering a waterproof structure; the water on one side of the roadbed is blocked for the first time through the first waterproof plate, so that the external water on one side of the roadbed is prevented from permeating into the waterproof structure; a small amount of water in the waterproof structure is discharged through the drain holes and the drain through holes; and finally, the second waterproof board is used for secondarily blocking water in the top concrete block, so that the seepage-proofing effect is good, water is effectively prevented from permeating into the dam body from a surface layer or a roadbed, materials such as reinforcing steel bars in the dam body are prevented from being corroded, the service life of the dam body is prolonged, and the safety of the dam body is favorably ensured.
2. The buffer cushion and the prestressed steel bars are arranged, the buffer cushion can buffer settlement or deviation of a roadbed, the prestressed steel bars can reduce or offset tensile stress caused by external load, the purpose of delaying concrete cracking in a tensile region is achieved, further, cast concrete is prevented from shifting or cracking, and the service life of the dam is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention in the form of a surfacing mat;
fig. 3 is a partial schematic view of fig. 2 at a.
In the figure: 1-roadbed, 2-dam foundation, 3-surface laying layer, 4-buffer cushion, 5-first waterproof board, 6-second waterproof board, 7-bottom concrete block, 8-top concrete block, 9-drainage through hole, 10-prestressed reinforcement, 11-waterproof geotextile, 12-arc cover plate, 13-waterproof rubber plate, 14-drainage hole, 15-V-shaped diversion trench and 16-bulge.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 to 3, the dam edge waterproof connector according to the present invention includes a roadbed 1 and a dam foundation 2, a waterproof structure is disposed between the dam foundation 2 and the roadbed 1, a first waterproof assembly is installed between the waterproof structure and the roadbed 1, a second waterproof assembly is installed between the upper portion of the waterproof structure and the dam foundation 2, a surface layer waterproof assembly is installed on the top of the waterproof structure, and a surface layer 3 is laid on the tops of the roadbed 1, the dam foundation 2 and the waterproof structure. Through waterproof construction, first waterproof assembly, second waterproof assembly and top layer waterproof assembly etc. thoroughly block the external water that permeates from road bed 1 and waterproof construction top and come, prevent that external water from permeating dam foundation 2, help prolonging 2 life of dam foundation, ensure 2 safety of dam foundation.
The waterproof structure comprises a bottom concrete block 7 and a top concrete block 8 arranged on the bottom concrete block 7.
The bottom concrete block 7 and the top concrete block 8 are made of waterproof concrete. The waterproof concrete refers to concrete with the impervious grade being more than or equal to P6 grade, and is mainly used for underground engineering of industry and civil buildings, water taking structures and engineering with dry-wet alternating action or freeze-thawing action.
The both sides integrated into one piece at top concrete piece 8 top is equipped with arch 16, and arch 16's bottom is equipped with a plurality of wash ports 14, and the lower part of top concrete piece 8 is equipped with drainage through-hole 9 and a plurality of V font guiding gutter 15, and the middle part of a plurality of V font guiding gutters 15 all communicates with drainage through-hole 9, and wash port 14 and drainage through-hole 9 all run through top concrete piece 8. When in use, the drainage holes 14 are vertical to the longitudinal direction of the dam foundation 2, and water on the bridge deck and the road surface can be discharged outside through the drainage holes 14 at the bottoms of the bulges 16; the drainage through holes 9 are vertical to the longitudinal direction of the dam foundation 2, and the V-shaped diversion grooves 15 can guide water in the top concrete block 8 into the drainage through holes 9 and then discharge the water through the drainage through holes 9, so that the waterproof performance of the connector is improved.
A plurality of prestressed reinforcements 10 are installed in the top concrete block 8, and the prestressed reinforcements 10 are V-shaped. When in use, the prestressed reinforcement 10 is made by a pretensioning method, the whole formed by the prestressed reinforcement 10 and the top concrete block 8 is called a prestressed concrete structure, the so-called prestressed concrete structure is that before the structural member is subjected to external load, pressure is artificially applied to the structural member, and the generated prestressed state is used for reducing or offsetting tensile stress caused by the external load, namely the deficiency of the tensile strength of the concrete is compensated by the higher compressive strength of the concrete, so that the aim of delaying the cracking of the concrete in a tensile area is fulfilled.
First waterproof assembly includes first waterproof board 5 and waterproof rubber board 13, and first waterproof board 5 is located between road bed 1 and bottom concrete block 7, the top concrete block 8, and waterproof rubber board 13 is located between arch 16 and road bed 1, and this waterproof rubber board 13 and first waterproof board 5 lie in same one side of top concrete block 8. The water on one side of the roadbed 1 is subjected to primary separation through the first waterproof plate 5 arranged on the roadbed 1, and the water in the top concrete block 8 is subjected to secondary separation through the second waterproof plate 6 arranged on the dam foundation 2, so that the anti-seepage effect is good. Meanwhile, the waterproof rubber plate 13 also has a buffering function.
And a buffer cushion 4 is also arranged between the first waterproof plate 5 and the roadbed 1. When the dam foundation is used, the cushion pad 4 is a 15CM thick rubber cushion pad, plays a role in buffering and shock absorption, and prevents stress generated by displacement or settlement of the roadbed 1 from being transmitted to the dam foundation 2.
The second waterproof assembly comprises a second waterproof plate 6 and a waterproof rubber plate 13, the second waterproof plate 6 is arranged between the top concrete block 8 and the dam foundation 2, the waterproof rubber plate 13 is arranged between the bulge 16 and the dam foundation 2, and the waterproof rubber plate 13 and the second waterproof plate 6 are located on the same side of the top concrete block 8.
The top layer waterproof assembly comprises waterproof geotextile 11 and two arc cover plates 12, the waterproof geotextile 11 is laid at the top of the waterproof structure, and the two arc cover plates 12 are arranged at the butt joint of the waterproof structure and the roadbed 1 and the dam foundation 2 in a one-to-one correspondence manner. When in use, the waterproof geotextile 11 is bonded with the top concrete block 8, and the waterproof geotextile 11 is a geotextile anti-seepage material which is formed by compounding a plastic film as an anti-seepage base material and non-woven fabrics. The arc-shaped cover plate 12 can bear proper deformation and is used for stopping water at the joint of the waterproof structure and the roadbed 1 and the dam foundation 2 and matched with the waterproof rubber plate 13 to prevent surface water from entering the dam foundation 2.
A construction method of a dam edge waterproof connecting body comprises the following main steps:
A. when the dam foundation 2 is constructed, connecting reinforcing steel bars extend from the bottom of one side, close to the roadbed 1, of the dam foundation 2, and the cushion pad 4 and the first waterproof plate 5 are fixed on one side, close to the dam foundation 2, of the roadbed 1;
B. pouring the bottom concrete block 7 until the concrete covers all the connecting steel bars;
C. after the bottom concrete block 7 reaches the designed strength, binding a plurality of prestressed reinforcements 10 above the bottom concrete block to form a plurality of reinforcement cages, fixing a steel draft tube A for manufacturing a V-shaped diversion trench 15 and a drainage through hole 9 at the top of the bottom concrete block 7, fixing a waterproof rubber plate 13 and a steel draft tube B for manufacturing a drainage hole 14 at the tops of a roadbed 1 and a dam foundation 2, fixing a second waterproof plate 6 at one side of the dam foundation 2 close to the roadbed 1, and then pouring a top concrete block 8 and a bulge 16;
D. after the top concrete block 8 is basically initially set, pulling out the steel drawing pipe A and the steel drawing pipe B;
E. and after the top concrete block 8 reaches the designed strength, laying waterproof geotextile 11, installing an arc cover plate 12, and finishing the construction of the surface paving layer 3.
The dam edge waterproof connecting body and the construction method thereof provided by the invention have the following beneficial effects:
1. surface water is blocked through the waterproof geotextile 11, the arc-shaped cover plate 12 and the waterproof rubber plate 13, so that the surface water is prevented from entering a waterproof structure; the water on one side of the roadbed 1 is blocked for the first time through the first waterproof plate 5, so that the external water on one side of the roadbed 1 is prevented from permeating into the waterproof structure; a small amount of water in the waterproof structure is drained through the drain hole 14 and the drain through hole 9; and finally, the second waterproof plate 6 is used for secondarily blocking water in the top concrete block 8, so that the seepage-proofing effect is good, water is effectively prevented from permeating into the dam body from the surface layer 3 or the roadbed 1, materials such as reinforcing steel bars in the dam body are prevented from being corroded, the service life of the dam body is prolonged, and the safety of the dam body is ensured.
2. Be provided with blotter 4 and prestressing steel 10, the subsidence or the skew of subgrade 1 can be cushioned to blotter 4, and prestressing steel 10 can reduce or offset the tensile stress that the external load arouses, reaches the purpose of postponing tensile district concrete fracture, and then prevents to pour concrete aversion or fracture, has prolonged the life of dam.
Claims (5)
1. A dyke edge waterproof connector which characterized in that: the waterproof structure comprises a roadbed (1) and a dam foundation (2), wherein a waterproof structure is arranged between the dam foundation (2) and the roadbed (1), a first waterproof assembly is arranged between the waterproof structure and the roadbed (1), a second waterproof assembly is arranged between the upper part of the waterproof structure and the dam foundation (2), a surface layer waterproof assembly is arranged at the top of the waterproof structure, and a surface layer (3) is laid at the tops of the roadbed (1), the dam foundation (2) and the waterproof structure;
the waterproof structure comprises a bottom concrete block (7) and a top concrete block (8) arranged on the bottom concrete block (7);
the concrete block is characterized in that protrusions (16) are integrally formed on two sides of the top concrete block (8), a plurality of drain holes (14) are formed in the bottom of each protrusion (16), a drain through hole (9) and a plurality of V-shaped guide grooves (15) are formed in the lower portion of the top concrete block (8), the middle portions of the V-shaped guide grooves (15) are communicated with the drain through hole (9), and the drain holes (14) and the drain through holes (9) penetrate through the top concrete block (8);
the first waterproof assembly comprises a first waterproof plate (5) and a waterproof rubber plate (13), the first waterproof plate (5) is arranged among the roadbed (1), the bottom concrete block (7) and the top concrete block (8), the waterproof rubber plate (13) is arranged between the bulge (16) and the roadbed (1), and the waterproof rubber plate (13) and the first waterproof plate (5) are positioned on the same side of the top concrete block (8);
the second waterproof assembly comprises a second waterproof plate (6) and a waterproof rubber plate (13), the second waterproof plate (6) is arranged between the top concrete block (8) and the dam foundation (2), the waterproof rubber plate (13) is arranged between the bulge (16) and the dam foundation (2), and the waterproof rubber plate (13) and the second waterproof plate (6) are positioned on the same side of the top concrete block (8);
the surface layer waterproof assembly comprises waterproof geotextile (11) and two arc-shaped cover plates (12), the waterproof geotextile (11) is laid at the top of the waterproof structure, and the two arc-shaped cover plates (12) are arranged at the butt joint positions of the waterproof structure, the roadbed (1) and the dam foundation (2) in a one-to-one correspondence mode.
2. A dike edge waterproofing connector according to claim 1, wherein: the bottom concrete block (7) and the top concrete block (8) are made of waterproof concrete.
3. A dike edge waterproofing connector according to claim 1 wherein: a plurality of prestressed reinforcements (10) are arranged in the top concrete block (8), and the prestressed reinforcements (10) are V-shaped.
4. A dike edge waterproofing connector according to claim 1, wherein: a cushion pad (4) is further arranged between the first waterproof plate (5) and the roadbed (1).
5. A construction method of a dike edge waterproof connecting body according to any one of claims 1 to 4, wherein: the construction method comprises the following main steps:
A. when the dam foundation (2) is constructed, connecting reinforcing steel bars extend from the bottom of one side, close to the roadbed (1), of the dam foundation (2), and the cushion pad (4) and the first waterproof plate (5) are fixed on one side, close to the dam foundation (2), of the roadbed (1);
B. pouring a bottom concrete block (7) until the concrete covers all the connecting steel bars;
C. after the bottom concrete block (7) reaches the designed strength, binding a plurality of prestressed reinforcements (10) above the bottom concrete block to form a plurality of reinforcement cages, fixing a steel pipe drawing A for manufacturing a V-shaped diversion trench (15) and a drainage through hole (9) at the top of the bottom concrete block (7), fixing a waterproof rubber plate (13) and a steel pipe drawing B for manufacturing a drainage hole (14) at the tops of the roadbed (1) and the dam foundation (2), fixing a second waterproof plate (6) at one side of the dam foundation (2) close to the roadbed (1), and then pouring a top concrete block (8) and a bulge (16);
D. after the top concrete block (8) is basically initially set, pulling out the steel drawing pipe A and the steel drawing pipe B;
E. and after the top concrete block (8) reaches the designed strength, laying waterproof geotextile (11), installing an arc-shaped cover plate (12), and finishing surface paving layer (3) construction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111633320.7A CN114232671B (en) | 2021-12-28 | 2021-12-28 | Dam edge waterproof connecting body and construction method thereof |
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| CN202111633320.7A CN114232671B (en) | 2021-12-28 | 2021-12-28 | Dam edge waterproof connecting body and construction method thereof |
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| CN114232671A CN114232671A (en) | 2022-03-25 |
| CN114232671B true CN114232671B (en) | 2023-03-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104404919B (en) * | 2014-12-03 | 2017-02-22 | 中国电建集团成都勘测设计研究院有限公司 | Dam foundation corridor and bank slope bedrock connecting structure |
| KR101828403B1 (en) * | 2017-04-17 | 2018-02-12 | 김경수 | Reservoir embankment construction method and reservoir embankment waterproof structure |
| CN209353288U (en) * | 2018-12-10 | 2019-09-06 | 四川港航建设工程有限公司 | Active service dyke dam crest road upgradeable architecture |
| CN109610415A (en) * | 2018-12-11 | 2019-04-12 | 长春工程学院 | The dam configuration that frost damage prevention destroys |
| CN211006188U (en) * | 2019-07-29 | 2020-07-14 | 长江勘测规划设计研究有限责任公司 | Road and dyke combined roadbed differential settlement prevention and control structure |
| CN213061560U (en) * | 2020-07-07 | 2021-04-27 | 长江勘测规划设计研究有限责任公司 | Road subgrade and pavement structure on flood control wall |
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