Vertical seam structure for surface extrusion damage of compressive seam
By setting surface water stop, bottom water stop and wedge-shaped rubber plates in the pressing joints, the shape of the joints is adjusted to wedges with large surfaces and small bottoms, the extrusion and damage problem of the pressing joints of the concrete panel rock pile dam is solved, and the anti-seepage safety of the dam is improved.
Patent Information
- Application Number
- CN202421609179.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The pressing joints of concrete panel rock pile dams are prone to extrusion damage in the middle of the valley, and the existing anti-extrusion plate structure is difficult to effectively alleviate this problem.
The surface water stop, bottom water stop and wedge-shaped rubber plate structure is adopted to adjust the shape of the pressing joint to a wedge with a large surface and a small bottom to increase the margin of extrusion space, and utilize the deformation ability of the wedge-shaped rubber plate and water stop copper sheet to avoid direct extrusion of concrete.
It effectively alleviates the extrusion damage of the panel, improves the anti-seepage safety of the dam panel, reduces the direct extrusion of concrete on both sides of the pressing joints, and protects the panel structure.
Smart Images
Figure CN223118995U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of hydraulic structures, in particular to a vertical joint structure for alleviating the surface extrusion damage of the compression joints of the concrete face slab of a rockfill dam with concrete face slab. Background Art
[0002] The concrete face rockfill dam is a commonly used dam type in China at present, and the concrete face slab mainly plays the role of anti-seepage. The face slab of the concrete face rockfill dam is in tension on both banks and in compression in the middle of the river valley. Therefore, tensile joints are arranged on both banks of the face slab, and compression joints are arranged in the middle of the river valley.
[0003] In many operation cases, the face slabs on both sides of the compression vertical joints in the middle of the river valley and at the middle and upper elevations are prone to extrusion damage. Usually, anti-extrusion plates are arranged in the compression joints to absorb the compressed energy and alleviate the extrusion damage of the face slab.
[0004] The main reason for the extrusion damage of the concrete face slab is that the deformation of the dam body is large. The dam bodies on both banks deform towards the middle of the river valley, driving the face slab to be extruded towards the middle of the river valley. The overall face slab is deformed downstream under the influence of water pressure. The compression vertical joint is in a state of surface extrusion and bottom opening. Therefore, the surface of the face slab in the middle of the river valley and at the middle and upper elevations is very prone to extrusion damage.
[0005] Based on the above situation, the utility model provides a vertical joint structure for alleviating the surface extrusion damage of the compression joints of the concrete face slab of a rockfill dam with concrete face slab. Content of the Utility Model
[0006] In order to solve the problems existing in the background art, the utility model provides a vertical joint structure for the surface extrusion damage of the compression joint.
[0007] The utility model adopts the following technical scheme:
[0008] A vertical joint structure for the surface extrusion damage of the compression joint includes surface water stop, bottom water stop and wedge-shaped rubber plate. The wedge-shaped rubber plate is arranged in the compression vertical joint. The surface water stop includes a protective cover and plastic filler. The plastic filler is filled along the compression vertical joint. The protective cover is arranged outside the plastic filler and is fixed on the face slab along the direction of the compression vertical joint. The bottom water stop includes a bottom protection mechanism, a water stop copper sheet and a filling mechanism. The filling mechanism is arranged inside the bottom end of the compression vertical joint. The water stop copper sheet is arranged below the compression vertical joint and is attached to the filling mechanism. The bottom protection mechanism is arranged below the water stop copper sheet and is arranged in the cushion material.
[0009] Furthermore, the surface water stop further includes a chloroprene rubber gasket, and the chloroprene rubber gasket is arranged below the plastic filler for protecting the plastic filler.
[0010] Furthermore, the protective cover is fixed on the face slab by expansion bolts.
[0011] Further, the filling mechanism includes foam plastic and neoprene rods, and the foam plastic is disposed below the neoprene rods.
[0012] Further, the water stop copper sheet is a W-shaped water stop copper sheet.
[0013] Further, the bottom protection mechanism includes a neoprene gasket and a cement mortar cushion layer. The neoprene gasket is disposed below the water stop copper sheet, and the cement mortar cushion layer is laid below the neoprene gasket.
[0014] Further, the cross-section of the cement mortar cushion layer is an inverted trapezoid.
[0015] A vertical joint structure for surface extrusion damage of a compressive joint provided by the present utility model: By adjusting the local structure of the compressive joint, the adverse consequences of panel extrusion damage are alleviated. The wedge-shaped vertical joint with a large surface and a small bottom expands the spatial margin of surface extrusion. The wedge-shaped structure also satisfies the deformed shape of the compressive vertical joint after deformation, thereby further avoiding the direct extrusion of the concrete on both sides of the compressive vertical joint and alleviating the panel extrusion damage. Description of the Drawings
[0016] Figure 1 It is a schematic cross-sectional view of the overall structure of the present utility model.
[0017] The numbers marked in the figure are successively represented as: 1 - protective cover, 2 - plastic filler, 3 - neoprene gasket, 4 - expansion bolt, 5 - cement mortar cushion layer, 6 - neoprene gasket, 7 - W-shaped water stop copper sheet, 8 - neoprene rod, 9 - foam plastic, 10 - wedge-shaped rubber plate. Detailed Description of the Invention
[0018] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.
[0019] Refer to the attached Figure 1 , a vertical joint structure for surface extrusion damage of a compressive joint, includes surface water stop, bottom water stop and wedge-shaped rubber plate 10. The wedge-shaped rubber plate 10 is disposed in the compressive vertical joint. The surface water stop includes a protective cover 1 and a plastic filler 2. The plastic filler 2 is filled along the compressive vertical joint. The protective cover 1 is disposed outside the plastic filler 2 and fixed on the panel along the direction of the compressive vertical joint. The plastic filler 2 flows into the joint under the action of water pressure, and the protective cover 1 protects the plastic filler 2 on the joint surface.
[0020] The bottom water stop includes a bottom protection mechanism, a water stop copper sheet and a filling mechanism. The filling mechanism is arranged inside the bottom end of the compressive vertical joint. The water stop copper sheet is arranged below the compressive vertical joint and is attached to the filling mechanism. The bottom protection mechanism is arranged below the water stop copper sheet and is arranged in the bedding material. The wedge-shaped vertical joint and the matching wedge-shaped rubber plate 10 transform the original rectangular compressive vertical joint into a wedge-shaped structure with a large surface and a small bottom.
[0021] The surface water stop further includes a chloroprene rubber gasket 63. The chloroprene rubber gasket 63 is arranged below the plastic filler 2. It is used to protect the plastic filler 2.
[0022] The protective cover 1 is fixed on the panel by expansion bolts 4.
[0023] The filling mechanism includes a foam plastic 9 and a chloroprene rubber rod 8. The foam plastic 9 is arranged below the chloroprene rubber rod 8.
[0024] The water stop copper sheet is a W-shaped water stop copper sheet 7.
[0025] The bottom protection mechanism includes a chloroprene rubber gasket 63 and a cement mortar cushion layer 5. The chloroprene rubber gasket 63 is arranged below the water stop copper sheet. The cement mortar cushion layer 5 is laid below the chloroprene rubber gasket 63. The cement mortar cushion layer 5 and the chloroprene rubber gasket 63 serve as the foundation of the W-shaped water stop copper sheet 7 to protect the filling mechanism from being damaged.
[0026] The cross-section of the cement mortar cushion layer 5 is an inverted trapezoid.
[0027] In response to the situation of excessive extrusion deformation of the panel, the wedge-shaped rubber plate 10 can relieve the extrusion damage of the panel; the nose height and the vertical leg height of the W-shaped copper water stop belt are lengthened, giving the water stop copper sheet a greater deformation margin and improving the anti-seepage safety of the dam panel.
[0028] The matching wedge-shaped rubber plate 10 transforms the original rectangular compressive vertical joint into a wedge-shaped structure with a large surface and a small bottom. The filling chloroprene rubber rod 8 is also a wedge-shaped structure. The compressive vertical joint is arranged in the middle of the river valley. The damage of the panel mainly occurs on the surface of the panel of the compressive vertical joint at the middle and upper elevations of the dam. The compressive vertical joint at the middle and upper elevations of the dam is affected by the deformation of the dam during the operation period, showing a state of surface extrusion and bottom opening. As the deformation further increases, the concrete on both sides of the compressive vertical joint will be further extruded until it is extruded and damaged. The wedge-shaped vertical joint with a large surface and a small bottom expands the space margin of surface extrusion. The wedge-shaped structure also meets the deformed shape of the compressive vertical joint after deformation, thus further avoiding the direct extrusion of the concrete on both sides of the compressive vertical joint and relieving the extrusion damage of the panel.
[0029] Note that the above is only the preferred embodiment of the present utility model and the applied technical principles. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in more detail through the above embodiments, the present utility model is not limited to the above embodiments only. Without departing from the concept of the present utility model, it may also include more other equivalent embodiments, and the scope of the present utility model is determined by the scope of the appended claims.
Claims
1. A vertical crack structure with surface extrusion damage on a compressive crack, characterized in that, It includes surface water stop, bottom water stop and wedge-shaped rubber plate. The wedge-shaped rubber plate is arranged in the compressive vertical joint. The surface water stop includes a protective cover and plastic filler. The plastic filler is paved along the compressive vertical joint. The protective cover is arranged outside the plastic filler and fixed on the concrete slab along the direction of the compressive vertical joint. The bottom water stop includes a bottom protection mechanism, a water-stop copper sheet and a filling mechanism. The filling mechanism is arranged inside the bottom end of the compressive vertical joint. The water-stop copper sheet is arranged below the compressive vertical joint and fits with the filling mechanism. The bottom protection mechanism is arranged below the water-stop copper sheet and is arranged in the cushion material.
2. The vertical seam structure with surface extrusion damage of a compressive seam according to claim 1, characterized in that, The surface water stop further includes a neoprene gasket, and a neoprene gasket is arranged below the plastic filler.
3. The vertical joint structure with surface extrusion damage of a compressive joint according to claim 1, characterized in that, The protective cover is fixed on the concrete slab by expansion bolts.
4. The vertical joint structure with surface extrusion damage of a compressive joint according to claim 1, wherein The filling mechanism includes foam plastic and a neoprene rod, and the foam plastic is arranged below the neoprene rod.
5. A vertical joint structure with surface extrusion damage of a compressive joint according to claim 1, characterized in that, The water-stop copper sheet is a W-shaped water-stop copper sheet.
6. The vertical fracture structure with compressive fracture surface extruded and damaged according to claim 1, characterized in that, The bottom protection mechanism includes a neoprene gasket and a cement mortar cushion layer. The neoprene gasket is arranged below the water-stop copper sheet, and the cement mortar cushion layer is laid below the neoprene gasket.
7. A vertical joint structure with surface extrusion damage of a compressive joint according to claim 6, characterized in that, The cross-section of the cement mortar cushion layer is an inverted trapezoid.