Dam toe board slip form structure with variable angle and size

Abstract

The utility model discloses a dam toe board slip form structure with variable angle and size, which comprises a slide rail, a horizontal slip form group, an inclined surface template, a first telescopic rod, a second telescopic rod and a mounting support, the horizontal slip form group comprises an embedded template and an outer sleeve template sleeved outside the embedded template, the other end of the embedded template is hinged with the inclined surface template, and the first telescopic rod and the second telescopic rod are connected with the mounting support. The two ends of the first telescopic rod are installed on the top face of the embedded formwork and the top face of the outer sleeve formwork through installation supports correspondingly, and the two ends of the second telescopic rod are installed on the top face of the embedded formwork and the top face of the inclined face formwork through installation supports correspondingly. The device can adapt to continuous variable angle and size in the concrete pouring process of the dam toe board, the size and the angle of the device can be adjusted according to the change of the toe board, and the device is simple in structure, convenient to mount and dismount, rapid to construct, capable of being repeatedly used, low in cost, ecological, environment-friendly, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of slipform construction technology, specifically to a slipform structure for a dam toe plate with variable angle and size. Background Technology

[0002] Slipform construction technology involves assembling sliding formwork around the component being constructed, and using jacks or other lifting equipment to slide the formwork along the concrete surface, thereby completing the continuous pouring of concrete. In the field of hydraulic and hydropower construction technology, slipform construction technology has been increasingly widely used due to its significant advantages such as short construction cycle, high material utilization rate, low input cost, stable construction quality, and safety and reliability.

[0003] However, in some special engineering scenarios, traditional slipform technology faces numerous challenges. Take the Lawa Hydropower Station as an example, such as... Figure 1 As shown, the left and right bank toe slabs of the hydropower station dam have complex structural dimensions, with an elevation range of 2475m-2706m, a slope between 1:1.45 and 1:1.852, a toe slab width HD of 8m-6m, a thickness δ of 1.2m-0.6m, a top surface width IQ of 2.832m-5.163m, a nose sill slope QT' length of 2.576m-7.358m, an angle β between the toe slab X-ray and the foundation surface of 0°-34.5923°, and an angle β' between the top surface of the panel and the foundation surface of the toe slab of 0°-34.4817°.

[0004] For toe slabs with continuously changing dimensions and angles, traditional slipform construction presents a series of technical challenges. First, the slipform width cannot accommodate the continuous change in top surface dimensions from 2.832m to 5.163m. Second, the slipform nose section cannot accommodate the continuous change in inclined length from 2.576m to 7.358m and included angle from 0° to 34.5923°. Third, traditional slipforms have relatively weak rigidity and anti-buoyancy force, making it difficult to meet the practical requirements of convenient pouring and simple commissioning.

[0005] In summary, existing slipform technology has significant shortcomings when dealing with toe slab construction with complex structural dimensions and angle variations, such as the Lawa Hydropower Station. There is an urgent need for a new slipform structure to solve these technical problems in order to ensure the smooth progress of the project and the quality of construction. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a sliding formwork structure for a dam toe plate with variable angle and size.

[0007] A variable angle and size dam toe slipform structure includes a slide rail, a horizontal slipform assembly, an inclined template, a first telescopic rod, a second telescopic rod, and mounting supports. The horizontal slipform assembly includes an inner template and an outer template fitted over the inner template. The other end of the inner template is hinged to the inclined template. The two ends of the first telescopic rod are respectively mounted on the top surfaces of the inner template and the outer template through mounting supports. The two ends of the second telescopic rod are respectively mounted on the top surfaces of the inner template and the inclined template through mounting supports.

[0008] A further technical solution is: the outer template is a box-shaped structure with an opening at one end, the inner template and the inclined template are fully enclosed box-shaped structures, the top surface of the inner template and the inclined template is equipped with a water inlet valve, and the side surface of the inner template and the inclined template is equipped with a water outlet valve.

[0009] A further technical solution is: a first connecting plate and a second connecting plate are respectively provided on opposite sides of the bottom of the embedded template and the inclined template, and the first connecting plate and the second connecting plate are hinged together by a hinge.

[0010] A further technical solution is as follows: both ends of the first telescopic rod and the second telescopic rod are provided with through holes. The mounting support includes fixed ear plates symmetrically arranged on both sides of the through holes. The fixed ear plates are provided with fixed holes corresponding to the through holes. A pin is inserted between the fixed holes and the through holes. A fixing pin is inserted through the pin hole of the pin.

[0011] A further technical solution is: the outer template has multiple evenly distributed fastening holes, and fastening bolts are installed in the fastening holes, with the bottom end of the fastening bolts pressing tightly against the upper surface of the inner template.

[0012] A further technical solution is: a lifting lug is provided on one side of the horizontal sliding formwork and the inclined formwork, and a traction system is connected to the lifting lug. The traction system is fixedly connected to the anchor bars anchored to the dam.

[0013] A further technical solution is that anti-fall steel ropes are also connected to the outer template and the inclined template via lifting lugs.

[0014] A further technical solution is to build a vibration platform, a finishing platform, and a curing shed on the outer template, the inner template, and the sloping template.

[0015] The beneficial effects of this utility model are:

[0016] This utility model's toe slab slipform structure incorporates a horizontal slipform assembly and an inclined template. The horizontal slipform assembly includes an inner template and an outer template fitted over the inner template. Adjusting the length of the first telescopic rod adjusts the length of the inner template extending into the outer template, thus regulating the overall length of the horizontal slipform assembly. Hinges facilitate rotation between the inclined template and the horizontal slipform assembly, and adjusting the length of the second telescopic rod accommodates angle adjustments between them. The inner template and the inclined template form a seamless, fully enclosed box structure, which can be filled with water via an inlet valve to act as a counterweight water tank, enhancing the rigidity, buoyancy resistance, and stability of the toe slab slipform structure to meet the requirements of pouring construction.

[0017] The slipform structure of this utility model can adapt to continuous changes in angle and size during the pouring of concrete for the toe slab of a dam. The length and angle of the slipform structure can be adjusted according to the changes in the toe slab. It has a simple structure, is easy to install and disassemble, is quick to construct, can be reused multiple times, is low in cost, is environmentally friendly, and is safe and reliable. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the toe plate structure;

[0019] Figure 2 This is a front view schematic diagram of the sliding mode structure of this utility model;

[0020] Figure 3 This is a top view of the sliding mold structure of this utility model;

[0021] Figure 4 This is a front view schematic diagram of the mounting support at one end of the first telescopic pole;

[0022] Figure 5 This is a top view of the mounting bracket at one end of the first telescopic pole;

[0023] Figure 6 This is a side view of the mounting bracket at one end of the first telescopic pole;

[0024] Figure 7 This is an enlarged schematic diagram of the connection between the embedded template and the beveled template;

[0025] Figure 8 This is an assembly diagram of the sliding mold structure of this utility model.

[0026] Figure 9 This is a side view of the sliding mold structure of this utility model in use.

[0027] In the picture:

[0028] 1. Toe plate, 2. Horizontal sliding module, 21. Outer template, 22. Inner template, 3. Sloping template, 4. Hinge, 5. First connecting plate, 6. Second connecting plate, 7. First telescopic rod, 8. Second telescopic rod, 9. Mounting support, 91. Fixed ear plate, 92. Pin, 93. Fixed pin, 10. Inlet valve, 11. Outlet valve, 12. Fastening bolt, 13. Vibration platform, 14. Finishing platform, 15. Protective canopy, 16. Traction system, 17. Anchor bar, 18. Fall protection wire rope, 19. Slide rail, 20. Lifting lug. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] A dam toe slipform structure with variable angle and size, such as Figure 1-9 As shown, it includes a slide rail 19, a horizontal sliding template 2, an inclined template 3, a first telescopic rod 7, a second telescopic rod 8, and a mounting bracket 9. The horizontal sliding template 2 includes an inner template 22 and an outer template 21 fitted outside the inner template 22. The other end of the inner template 22 is hinged to the inclined template 3. The two ends of the first telescopic rod 7 are respectively installed on the top surfaces of the inner template 22 and the outer template 21 through the mounting bracket 9. The two ends of the second telescopic rod 8 are respectively installed on the top surfaces of the inner template 22 and the inclined template 3 through the mounting bracket 9.

[0033] There are two types of telescopic rods: the first telescopic rod 7 and the second telescopic rod 8. Two first telescopic rods 7 are symmetrically arranged on the top surface of the horizontal sliding mold assembly 2, and two second telescopic rods 8 are symmetrically arranged on the top surface of the inclined template 3. The lengths of the first telescopic rods 7 and the second telescopic rods 8 can be adjusted as needed, thereby adapting to the overall length adjustment of the horizontal sliding mold assembly 2 and the tilt angle adjustment between the inclined template 3 and the horizontal sliding mold assembly 2. The first telescopic rods 7 and the second telescopic rods 8 can be telescopic lead screws or telescopic sleeves as used in existing technologies; their specific structures will not be described in detail here.

[0034] The slide rail 19 is made of ∠80×5mm angle steel and -50×5mm flat steel combined with Φ18mm round steel. The slide rail 19 is laid on the foundation surface of the dam toe plate 1 as the sliding track for the horizontal sliding formwork 2 and the inclined formwork 3.

[0035] The outer template 21 is a box-shaped structure welded from 8mm thick steel plates with an opening at one end. The inner template 22 and the inclined template 3 are seamlessly welded from 8mm thick steel plates to form a fully enclosed box-shaped structure. The inner template 22 extends into the opening of the outer template 21 and slides within it. A water inlet valve 10 is provided on the top surface of the inner template 22 and the inclined template 3, and a water outlet valve 11 is provided on the sides of the inner template 22 and the inclined template 3. This allows the inner template 22 and the inclined template 3 to be used as counterweight water tanks, improving the overall stability of the device. Specifically, the inner template 22 and the outer template 21 are rectangular box-shaped structures, and the inclined template 3 is a rectangular or trapezoidal structure.

[0036] The bottom of the embedded template 22 and the inclined template 3 are respectively provided with a first connecting plate 5 and a second connecting plate 6 on opposite sides. A hinge 4 is hinged between the first connecting plate 5 and the second connecting plate 6, so that the embedded template 22 and the inclined template 3 are rotatably connected.

[0037] Both ends of the first telescopic rod 7 and the second telescopic rod 8 are provided with through holes. The mounting support 9 includes fixed ear plates 91 symmetrically arranged on both sides of the through holes. Fixed holes corresponding to the through holes are provided on the fixed ear plates 91. A pin 92 passes through between the fixed holes and the through holes. A fixed pin 93 passes through the pin hole of the pin 92.

[0038] Multiple reinforcing components are provided between the outer template 21 and the inner template 22 to strengthen their connection. The outer template 21 has multiple evenly distributed fastening holes, and fastening bolts 12 are installed in these holes, with the bottom end of the bolts 12 abutting against the upper surface of the inner template 22. By using the fastening bolts 12, the outer template 21 and the inner template 22 are further reinforced after adjustment and positioning, eliminating the gap at the bottom of the overlapping area between the inner template 22 and the outer template 21, and preventing concrete from getting stuck during construction.

[0039] Lifting lugs 20 are provided on one side of the horizontal sliding formwork 2 and the inclined formwork 3. A traction system 16 is connected to the lifting lugs 20, and the traction system 16 is fixedly connected to the anchor bars 17 anchored to the dam. Specifically, the traction system 16 can be a winch or a chain hoist, which drives the horizontal sliding formwork 2 and the inclined formwork 3 to move. More preferably, the outer formwork 21 and the inclined formwork 3 are also connected to a fall arresting steel rope 18 via the lifting lugs 20. The fall arresting steel rope 18 is made of Φ17 steel wire rope.

[0040] The outer template 21, the inner template 22 and the inclined template 3 are also equipped with a vibration platform 13, a finishing platform 14 and a curing shed 15. The vibration platform 13 and the finishing platform 14 facilitate the vibration and finishing of the poured concrete.

[0041] How to use this utility model:

[0042] (1) Process and test-assemble each component in the processing plant, and disassemble and transport it to the site after meeting the requirements;

[0043] (2) Install sliding rails 19 on the dam according to the project requirements, and then calibrate and fix them.

[0044] (3) Install traction system 16;

[0045] (4) Install the outer template 21, the inner template 22, the inclined template 3, the hinge 4, the first telescopic rod 7 and the second telescopic rod 8 in sequence. According to the structure, size and angle of the sliding part of the toe plate 1, adjust the horizontal length of the horizontal sliding module 2 by adjusting the first telescopic rod 7, adjust the inclination angle of the inclined template 3 by adjusting the second telescopic rod 8, and fix the outer template 21 and the inner template 22 with fastening bolts 12.

[0046] (5) According to the design counterweight requirements, open the water inlet valve 10, fill the embedded template 22 and inclined template 3 with water, and then close the water inlet valve 10;

[0047] (6) Install auxiliary structures such as a vibration platform, a finishing platform 14, and a curing shed 15 on the horizontal sliding formwork 2 and the inclined formwork 3;

[0048] (7) After installation and comprehensive inspection, start the traction system 16 and run it to drive the horizontal sliding formwork 2 and the inclined formwork 3 to slide on the slide rail 19.

[0049] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sliding formwork structure for a dam toe plate with variable angle and size, characterized in that, The system includes a slide rail, a horizontal sliding template, an inclined template, a first telescopic rod, a second telescopic rod, and mounting supports. The horizontal sliding template includes an inner template and an outer template fitted over the inner template. The other end of the inner template is hinged to the inclined template. The two ends of the first telescopic rod are respectively mounted on the top surfaces of the inner template and the outer template via mounting supports. The two ends of the second telescopic rod are respectively mounted on the top surfaces of the inner template and the inclined template via mounting supports.

2. The sliding formwork structure for a dam toe plate with variable angle and size according to claim 1, characterized in that, The outer template is a box-shaped structure with an opening at one end, while the inner template and the inclined template are fully enclosed box-shaped structures. The top surface of the inner template and the inclined template is equipped with a water inlet valve, and the side surface of the inner template and the inclined template is equipped with a water outlet valve.

3. The sliding formwork structure for a dam toe plate with variable angle and size according to claim 1, characterized in that, The bottom of the embedded template and the inclined template are respectively provided with a first connecting plate and a second connecting plate, which are connected by a hinge.

4. The sliding formwork structure for a dam toe plate with variable angle and size according to claim 1, characterized in that, Both ends of the first and second telescopic rods are provided with through holes. The mounting bracket includes fixed ear plates symmetrically arranged on both sides of the through holes. The fixed ear plates are provided with fixed holes corresponding to the through holes. A pin is inserted between the fixed holes and the through holes, and a fixed pin is inserted through the pin hole of the pin.

5. The sliding formwork structure for a dam toe plate with variable angle and size according to claim 1, characterized in that, The outer template has multiple evenly distributed fastening holes, and fastening bolts are installed in the fastening holes. The bottom end of the fastening bolts is pressed against the upper surface of the inner template.

6. The sliding formwork structure for a dam toe plate with variable angle and size according to claim 1, characterized in that, Lifting lugs are provided on one side of the horizontal sliding formwork and the inclined formwork. A traction system is connected to the lifting lugs, and the traction system is fixedly connected to the anchor bars anchored to the dam.

7. A sliding formwork structure for a dam toe plate with variable angle and size according to claim 6, characterized in that, The outer template and the sloping template are also connected to anti-fall steel ropes by lifting lugs.

8. The sliding formwork structure for a dam toe plate with variable angle and size according to claim 1, characterized in that, Vibration platforms, finishing platforms, and curing sheds are also built on the outer template, inner template, and sloping template.

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