CN211113528U - Anti-arch plunge pool structure adapting to valley amplitude deformation - Google Patents
Anti-arch plunge pool structure adapting to valley amplitude deformation Download PDFInfo
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- CN211113528U CN211113528U CN201920817693.1U CN201920817693U CN211113528U CN 211113528 U CN211113528 U CN 211113528U CN 201920817693 U CN201920817693 U CN 201920817693U CN 211113528 U CN211113528 U CN 211113528U
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Abstract
The utility model provides an inverted arch plunge pool structure adapting to the deformation of valley amplitude, which comprises an inverted arch bottom plate, an arch support and two bank side walls, wherein the arch support is anchored on a mountain body, and the inverted arch bottom plate is formed by tightly connecting a plurality of plates; the inverted arch bottom plate plunge pool structure is provided with an elastic structure seam which can eliminate the contraction deformation of the valley amplitude of the mountain bodies on the two banks without influencing the load transmission, the elastic structure seam is arranged at the seam between the arch support and the side wall and the kerfs of the side walls on the two banks, and a compressible and recoverable elastic material is filled in the elastic structure seam, so that the elastic structure seam can meet the elastic compression deformation performance and bear the effects of water flow scouring and pulsating water pressure. The utility model can effectively enhance the stability of the bottom plate of the plunge pool, and meet the safety requirements of flood discharge and energy dissipation of the high dam; and the plunge pool can adapt to the valley width shrinkage deformation of mountains at both banks after water storage, the anchoring engineering quantity of the plunge pool can be obviously reduced, the investment is saved, and the plunge pool can be popularized and applied to high-flow high-head flood discharge and energy dissipation building engineering in high mountain gorges.
Description
Technical Field
The utility model relates to an anti-hunch pond of filling up structure that can adapt to millet width of cloth deformation is applicable to hydraulic and hydroelectric engineering, especially the concrete dam engineering of the large-traffic high water head in mountain narrow and valley.
Background
The natural conditions in western mountainous areas of China are complex, the flood discharge energy of the reservoir of the narrow river valley high dam is huge, the concrete dam discharges the flood through the dam body, and a water cushion pond (or a stilling pool) is built behind the dam to form a water cushion for energy dissipation. When the flood discharge power is too large, the pulsating uplift force generated by the water body exceeds the self weight of the concrete of the bottom plate of the water cushion pond and the anchoring force thereof, and the bottom plate is unstable and damaged. In order to avoid the instability and the damage of an energy dissipation structure, the structure of the plunge pool (or the stilling pool) with the inverted arch bottom is adopted, the load is transmitted to mountain bodies at two banks through the arch thrust of an inverted arch bottom plate, and the structural stability of the plunge pool (or the stilling pool) can be obviously improved.
After the reservoir stores water, the reservoir basin settlement and the deformation towards the valley direction occur at the reservoir bank and the dam downstream bank slope of some hydroelectric projects, the mountain valley width shrinkage deformation phenomenon is more prominent in a high dam reservoir in a high mountain canyon, the adverse effect is brought to hydraulic buildings, and the structure of a water cushion pond behind a dam is damaged due to the deformation of the valley width in some projects, so that the normal use is influenced.
CN101555687A discloses a high ground stress narrow valley inverted arch plunge pool, which is mainly used for avoiding high stress when excavation touches the bottom of a valley, a large number of anchor bar piles are arranged at the lower end of an inverted arch bottom plate to limit the exertion of an arch effect, although anchor bars are connected by sleeves, the action of the anchor bar piles and the arch thrust cannot be accurately defined, and the influence of valley amplitude deformation is not considered.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: aiming at the problems, the inverted arch plunge pool structure capable of adapting to the deformation of the valley amplitude is provided, the stability of a bottom plate of the plunge pool can be effectively enhanced through the arching effect, and the flood discharge and energy dissipation safety requirements of a high dam are met; and the plunge pool can adapt to the contraction and deformation of the valley amplitude of the mountain bodies on both sides after water storage through the elastic structure seam. Therefore, the utility model adopts the following technical scheme:
an inverted arch bottom plate plunge pool structure adapting to valley amplitude deformation comprises an inverted arch bottom plate, an arch base and two bank side walls, wherein the arch base is anchored on a mountain body, the inverted arch bottom plate is formed by tightly connecting a plurality of plates, and the inverted arch bottom plate forms arch thrust to transmit load to the mountain body on two banks through the arch base; the water cushion pond is characterized in that the inverted arch bottom plate is provided with elastic structure seams which can eliminate the contraction deformation of valley widths of mountain bodies at two banks without affecting the load transmission, the elastic structure seams are arranged at the seams between the arch support and the side walls and the sidewalk structure seams of the two banks, and compressible and recoverable elastic materials are filled in the elastic structure seams, and the elastic structure seams can meet the elastic compression deformation performance and bear the effects of water flow scouring and pulsating water pressure.
Furthermore, the elastic material comprises a spherical chain ethylene propylene diene monomer rubber plate, polyurea sealant is adopted on the surface of the seam to seal the seam,
furthermore, the chain-shaped ethylene propylene diene monomer rubber plate is provided with a plurality of arc-shaped protruding parts along the length direction, the protruding parts and the main body of the plate are made of the same material and are integrated, and the protruding parts are arranged on two sides of the main body of the plate in pairs.
Furthermore, a hollow rubber rod is arranged between the polyurea sealing glue sealing seam and the upper end of the spherical chain type ethylene propylene diene monomer rubber plate, and the diameter of the hollow rubber rod is slightly larger than the width of the seam.
Furthermore, key grooves are arranged between the plates of the inverted arch bottom plate and between the plates and the arch support for reinforcing connection.
Furthermore, the direct seams of the bottom plate, the arch support and the side wall of the inverted arch plunge pool are provided with two water-stop copper sheets to prevent water from seeping downwards.
By adopting the inverted arch plunge pool structure combined with the novel elastic structure seam, the load generated by flood discharge can be effectively transmitted to mountain bodies at both banks through arch thrust, the stability of the inverted arch plunge pool is effectively improved, the anchoring work amount of the plunge pool can be obviously reduced, and the investment is saved; moreover, the influence of shrinkage deformation of mountain valley amplitude on the structure can be effectively avoided, the running safety of the plunge pool is ensured, and the method can be popularized and applied to high-flow high-water-head flood discharge and energy dissipation building engineering in high mountain gorges.
Drawings
Fig. 1 is a plan view of the inverted arch plunge pool of the present invention.
Fig. 2 is a schematic longitudinal section of the inverted arch plunge pool structure of the utility model.
Fig. 3 is a cross section schematic view of the inverted arch plunge pool structure of the utility model.
Fig. 4 is a big sample diagram of the elastic structure seam of the utility model.
FIG. 5 is an enlarged view taken at A1 in FIG. 4, showing details of the caulking and surface sealing material for the elastomeric structural seam.
Fig. 6 is an enlarged view at a2 in fig. 3.
Detailed Description
As shown in fig. 1 to 6, the present embodiment is an inverted arch bottom plate plunge pool structure adapted to the valley amplitude deformation, which is arranged at the downstream of a dam 1, and an inverted arch bottom plate plunge pool 2 and a secondary dam 3 form an energy dissipation plunge and braking dam flood discharge energy. The inverted arch plunge pool 2 is of a reinforced concrete structure and is of a main body structure consisting of an inverted arch bottom plate 2-1 positioned at the bottom of a riverbed, arch supports 2-2 of slope feet of two banks and a bank slope side wall 2-3.
The inverted arch bottom plate 2-1 is formed by connecting a plurality of arc-shaped plates with the arc length of about 15m into an arch, and key grooves 2-6 are arranged among the plates 2-1 and between the plates 2-1 and the arch support 2-2 for reinforcing connection so as to resist the radial shearing action. The inverted arch bottom plate 2-1 and the arch base 2-2 form a whole, the inverted arch bottom plate 2-1 generates arch thrust to the arch base 2-2 and transmits the arch thrust to the mountain bodies 5 on both banks through the arch base 2-2, and meanwhile, the existence of the arch thrust also enables the plates to be tightly combined and improves the stability.
The arch seats 2-3 are anchored on the mountain bodies 5 on both sides by pre-stressed anchor cables 2-4 to resist the upward component of the arch thrust and bear the force together with the mountain bodies 5.
Two water stop copper sheets 2-7 are arranged between each plate of the inverted arch plunge pool 2 to prevent water flow from seeping downwards; the inverted arch bottom plate 2-1 is provided with a drainage system 7 on the basis, the drainage system 7 is composed of criss-cross drainage galleries 7-1, drainage blind ditches 7-2 and system drainage holes 7-3, the bottom uplift pressure is reduced, and the stability of the bottom plate is improved.
The elastic structure seam 6 is arranged at the joint of the arch seat 2-2, the side wall 2-3 and the side wall berm 2-5, a certain seam width is reserved in the elastic structure seam 6, and compressible and recoverable elastic materials are filled in the seam, so that the elastic structure seam can adapt to the valley amplitude deformation of the mountain body 5 and can bear the action of water flow scouring and pulsating water pressure.
And the seam width B of the elastic structure seam 6 is determined by comparing the calculation result of the valley amplitude deformation with the monitoring result of the similar engineering, and is 2-3 cm.
The elastic structure is characterized in that a spherical chain type ethylene propylene diene monomer rubber plate 6-1 with the thickness equal to the seam width B is filled in the seam of the elastic structure, the spherical chain type ethylene propylene diene monomer rubber plate 6-1 is provided with a plurality of arc-shaped protruding parts 6-11 along the length direction (namely the height direction of the seam), the protruding parts 6-11 and a main body 6-10 of the plate are made of the same material and are integrated, the protruding parts 6-11 are arranged on two sides of the main body 6-10 of the plate in pairs, the compressible spherical chain type ethylene propylene diene monomer rubber plate 6-1 can ensure that the plate 6-1 has enough elasticity and toughness, is suitable for deformation difference of seam walls on two sides, is uniform in stress of the seam walls on two sides, and avoids extrusion damage of concrete at the seam position caused by deformation influence of valley width of a mountain body.
The surface of the elastic structure seam adopts a high-strength elastic polyurea sealant with the thickness of 3cm to seal the seam 6-3, the high-strength elastic polyurea sealant has high tensile strength, the bonding strength with concrete is greater than 3Mpa, the fracture elongation is greater than 200%, and the filling material in the seam is protected from water flow erosion and aging.
A hollow rubber rod 6-2 is arranged between the lower part of the polyurea sealant 6-3 and the spherical chain ethylene propylene diene monomer rubber plate 6-1, the diameter of the hollow rubber rod is slightly larger than the width B of the seam, the hollow rubber rod can adapt to the width change of the seam, and the hollow rubber rod plays a role in assisting seepage prevention and preventing the polyurea sealant from seeping into the seam.
The above description is only for the specific embodiments of the present invention, but the protection of the present invention is not limited thereto, and any person skilled in the art can think of equivalent changes or substitutions of the technical features of the present invention, all covered in the protection scope of the present invention.
Claims (5)
1. The inverted arch plunge pool structure is characterized in that an elastic structure seam capable of eliminating the contraction deformation of the valley amplitude of the mountain bodies on the two banks and not influencing the load transmission is arranged on the inverted arch plunge pool structure, the elastic structure seam is arranged at a seam between the arch base and the side wall and a berm structure seam of the two bank side walls, and a compressible and recoverable elastic material is filled in the elastic structure seam.
2. The inverted arch plunge pool structure adapted to valley width deformation of claim 1, wherein said elastic material comprises a ball chain ethylene propylene diene monomer rubber sheet, and polyurea sealant is applied to the surface of the seam to seal the seam.
3. The inverted arch plunge pool structure adapting to valley width deformation of claim 2, wherein the ball-chain ethylene propylene diene monomer rubber plate is provided with a plurality of arc-shaped convex parts along the length direction, the convex parts and the main body of the plate are made of the same material and are integrated, and the convex parts are arranged on two sides of the main body of the plate in pairs.
4. The inverted arch plunge pool structure for accommodating valley width deformation of claim 2, wherein a hollow rubber rod is provided between the polyurea sealant seal seam and the upper end of the epdm rubber plate, the diameter of the hollow rubber rod being slightly larger than the seam width.
5. The inverted arch plunge pool structure adapting to the valley amplitude deformation according to claim 1, 2, 3 or 4, wherein two water-stopping copper sheets are arranged among all the plates of the bottom plate, the arch support and the side wall of the inverted arch plunge pool to prevent water flow from seeping downwards; key grooves are arranged between the plates of the inverted arch bottom plate and between the plates and the arch support for reinforcing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920817693.1U CN211113528U (en) | 2019-05-31 | 2019-05-31 | Anti-arch plunge pool structure adapting to valley amplitude deformation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920817693.1U CN211113528U (en) | 2019-05-31 | 2019-05-31 | Anti-arch plunge pool structure adapting to valley amplitude deformation |
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| CN211113528U true CN211113528U (en) | 2020-07-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012174A (en) * | 2019-05-31 | 2020-12-01 | 中国电建集团华东勘测设计研究院有限公司 | Anti-arch plunge pool structure adapting to valley amplitude deformation |
| CN112922643A (en) * | 2021-04-21 | 2021-06-08 | 郑州地铁集团有限公司 | Shield interval caulking waterproof structure and method thereof |
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2019
- 2019-05-31 CN CN201920817693.1U patent/CN211113528U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012174A (en) * | 2019-05-31 | 2020-12-01 | 中国电建集团华东勘测设计研究院有限公司 | Anti-arch plunge pool structure adapting to valley amplitude deformation |
| CN112922643A (en) * | 2021-04-21 | 2021-06-08 | 郑州地铁集团有限公司 | Shield interval caulking waterproof structure and method thereof |
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