Toe board slip form structure of ultrahigh sand gravel face rockfill dam

Abstract

The invention discloses a toe board slip form structure of an ultrahigh sand gravel face rockfill dam, which realizes the purpose of pouring toe board concrete under the canyon topographic conditions of high mountain, steep slope, uneven rocks and nearly upright local bedrock slope. Specifically, a main slip form structure and an auxiliary slip form structure are adopted, the main slip form is responsible for the structural size and flatness of a toe board, and the auxiliary slip form is responsible for the shape and size of an inner reverse slope structure. A wheel type limiting mechanism is arranged at the front end of the outer side of the main slip form, it is ensured that the slip form does not make contact with bed rock to be blocked, and meanwhile the inner reverse slope structure size is controlled within the design requirement range. And a safety device is mounted on the slip form to ensure that the slip form does not slide down under the condition that the winch breaks down. The construction process is simplified, the construction cost is reduced, the construction progress is accelerated, the construction safety risk is reduced, and the method is suitable for high slope concrete construction in the fields of water conservancy, municipal administration, environmental protection and the like.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle detection, in particular to a toe plate sliding formwork structure of an ultra-high gravel face rockfill dam. Background Art

[0002] When the dam of a water conservancy project is a gravel reinforced concrete face rockfill dam, and the rock on one side of the concrete toe plate is uneven and the other side contains an inner and outer reverse slope structure, if the concrete of the toe plate on the side close to the mountain is constructed by flipping the mold, the labor intensity of the operators is too high, the quality of the concrete cannot be guaranteed, and the construction time is long and the cost is high. If conventional slipform construction is used, since the side of the toe plate close to the mountain is a steep and uneven bedrock slope, and the right side is an inner and outer reverse slope structure composed of inclined surfaces, the slipform cannot guarantee that this side will not be in contact with the bedrock and blocked, and the other side cannot ensure that the toe plate concrete reverse slope structure meets the design requirements.

[0003] In addition, the inclined length of the toe slab concrete is relatively large. If the flip form or conventional slip form pouring method is chosen, the construction progress will be too slow, which will seriously affect the filling and compaction construction of the dam and become a major problem in the dam filling construction. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a slipform construction structure for pouring toe plate concrete in canyon terrain with high mountains and steep slopes, uneven rocks, and locally nearly vertical bedrock slopes. The slipform construction structure solves the construction problems of long construction time for pouring toe plate concrete and high labor intensity for operators, and can be widely used in high slope concrete construction in water conservancy, municipal administration, environmental protection, etc.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a toe plate sliding form structure of an ultra-high gravel face rockfill dam, comprising a main sliding form and an auxiliary sliding form, wherein the auxiliary sliding form is arranged at one end of the main sliding form and the auxiliary sliding form is arranged parallel to the inner reverse slope of one side of the toe plate slope; Support rails are arranged on both sides of the toe plate slope, a sliding mold limiting device is arranged at the front end of one side of the main sliding mold, the sliding mold limiting device is a wheel structure, and the sliding mold limiting device on the main sliding mold is placed on the support rails; Sliding mold safety insurance mechanisms are installed on both sides of the main sliding mold In a preferred solution, the front end of the main sliding mold is provided with a main sliding mold steel, one of the main sliding mold steels is provided with a steel beam, and a roller is provided at the front end of the steel beam; A hinge seat is arranged on the main sliding mold steel, and the rear end of the steel beam is movably arranged on the hinge seat and combined with the roller to form a sliding mold limiting device.

[0006] In the preferred solution, a laser transmitter is provided on the steel beam where the sliding mold limiting device is located, a steel beam is fixedly provided on another main sliding mold steel, a laser receiver is provided at the front end of the steel beam, and the laser transmitter and the laser receiver are aligned in the horizontal direction.

[0007] In a preferred solution, a sliding form traction ear plate seat is provided on one side of the front end of the main sliding form close to the sliding form limiting device, and a sliding form traction wire rope is connected to the sliding form traction ear plate seat.

[0008] In a preferred solution, a track removal springboard is provided on one side of the rear end of the main sliding form away from the auxiliary sliding form; The track removal springboard includes two springboards, one end of which is movably arranged on a beam seat at the rear end of the main sliding formwork, a traction ear plate pin is arranged in the middle of the springboard, an ear plate seat pin is arranged on the main sliding formwork above the beam seat, and a rigging with a locking spiral buckle is arranged between the traction ear plate pin and the ear plate seat pin.

[0009] In a preferred solution, a lifting lug is also provided on the front end of the main sliding form.

[0010] In a preferred solution, the support rail is a square steel structure consisting of a front rail, a middle rail and a rear rail, and adjacent rail sections are connected and fixed by rail connecting pressing plates arranged in the rail sections; Support steel bars are arranged at the bottom of the support track, and track limiting steel bars are arranged above the support steel bars and located on both sides of the support track.

[0011] In a preferred solution, a first plastering platform is provided at the rear end of the main sliding formwork, and a first protective railing is provided on the first plastering platform; A sliding form working platform is provided at the front end of the main sliding form, and a second protective railing is provided on the sliding form working platform.

[0012] In a preferred solution, the slide form safety insurance mechanism on both sides of the main slide form includes a manual turntable, on which a wire rope drum is provided, on which a wire rope is wound, and a hook is fixed to one end of the wire rope; The bases on both sides of the manual turntable are provided with turntable back-off pin locks, and the pin locks in the turntable back-off pin locks extend to realize the positioning of the manual turntable; The hook is connected to the dam surface steel mesh or anchor hook.

[0013] In the preferred scheme, the wheel width in the sliding form limiting device is larger than the supporting track width, and the difference between the two is smaller than the design deviation value of the inner reverse slope. When the main sliding form on the toe plate is pulled and dragged upward, the main sliding form is controlled to drag upward in parallel by controlling the two winches synchronously, so that the structural shape and structural dimensions of the inner reverse slope of the toe plate can be controlled within the range of design requirements.

[0014] The toe plate sliding form structure of the ultra-high gravel face rockfill dam provided by the present invention has the following beneficial effects by adopting the above structure: (1) It effectively solved the problems of long construction time and high labor intensity of operators during the pouring of toe slab concrete, greatly improving the construction efficiency; (2) The designed main and auxiliary sliding formwork structures not only ensure the flatness of the toe slab concrete surface, but also ensure that the shape and size of the inner reverse slope structure meet the design requirements by setting a specific angle; (3) The wheel-type limit mechanism installed at the front right side of the main sliding form can effectively prevent the sliding form from getting stuck on the bedrock during the pouring process. At the same time, it ensures that the lateral displacement of the sliding form is precisely controlled, thus avoiding the sliding form deviation caused by lateral force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the toe plate structure of the present invention.

[0016] Figure 2-3 It is a schematic diagram of the overall structure of the sliding mode of the present invention.

[0017] Figure 4 It is a schematic diagram of the main structure of the sliding mold of the present invention.

[0018] Figure 5 It is a schematic diagram of the track removal springboard structure of the present invention.

[0019] Figure 6 It is a schematic structural diagram of the sliding mode limiting device of the present invention.

[0020] Figure 7 It is a schematic diagram of the support track structure of the present invention.

[0021] Figure 8 It is a schematic diagram of the structure of the sliding mode laser measurement and control part of the present invention.

[0022] Fig. 9 It is a schematic diagram of the structure of the sliding mode safety insurance mechanism of the present invention.

[0023] In the figure: a sliding form traction wire rope 1, a supporting track 2, a sliding form traction lug seat 3, a sliding form limit device 4, a main sliding form 5, a track removal springboard 6, a first plastering platform 7, a first protective railing 8, a second plastering platform 9, an auxiliary sliding form 10, an inner supporting track 11, a second protective railing 12, a sliding form working platform 13, a sliding form safety insurance mechanism 14, a bedrock slope 15, a toe plate slope 16, an inner reverse slope 17, an outer reverse slope 18, a laser transmitter 20, a laser beam 21, a laser receiver 22, a starter Heavy lifting lug 23, front section slide rail 2-1, slide rail connecting pressure plate 2-2, middle section slide rail 2-3, rear section slide rail 2-4, track limiting steel bar 2-5, supporting steel bar 2-6, main slide model steel 5-1, jump beam plate 6-1, traction ear plate pin 6-2, lock spiral buckle 6-3, beam seat 6-4, ear plate seat pin 6-5, hinge seat 24, steel beam 25, roller 26, manual turntable 14-1, hook 14-2, wire rope 14-3, wire rope drum 14-4, turntable back-off pin lock 14-5. DETAILED DESCRIPTION

[0024] Embodiment 1: In the toe plate slipform structure of super high gravel face rockfill dam: The main sliding form 5 and the auxiliary sliding form 10 together constitute a sliding form system. The main sliding form 5 is responsible for ensuring the structural size and flatness of the toe board slope 16, while the auxiliary sliding form 10 is responsible for the structural shape, size and flatness of the inner reverse slope 17 and the flatness of the concrete surface.

[0025] The main and auxiliary sliding formwork three-dimensional structure meets the constraints of three angles of the toe board concrete structure, namely, the angle α1 between the toe board slope surface and the horizontal, the angle α2 between the toe board slopes 16, and the distribution angle α3 before the main and auxiliary sliding formwork when pouring concrete.

[0026] In the above angle control: For the angle α1 between the toe plate slope surface and the horizontal, the toe plate steel mesh is installed on the slope of the mountain, and a support track 2 is set on the steel mesh. The support track 2 supports the main slipform. When the winch wire rope pulls the slipform along the support track 2 to drag the toe plate concrete upward, ensure that the angle α1 is within the permitted range.

[0027] For the angle α2 between the inner reverse slope 17 and the toe board slope 16, on the main and secondary structures of the toe board slipform, the secondary slipform and the main slipform are raised by an angle α2 to solve the concrete structure problem of the reverse slope on the left side of the toe board.

[0028] The toe board concrete distribution angle α3 is mainly used to solve the concrete distribution problem in the reverse slope section of the toe board. On the slope surface, the distribution level of the main sliding formwork 5 is lower than that of the reverse slope section. When concrete is distributed, it is not easy to flow to the front end of the auxiliary sliding formwork 10 in the reverse slope section. Structurally, a piece of the auxiliary sliding formwork 10 is cut so that the reverse slope section of the auxiliary sliding formwork 10 and the front end of the main sliding formwork 5 are in the same horizontal plane, thereby solving the concrete distribution problem in front of the auxiliary sliding formwork 10 in the reverse slope section. The cut angle is α3.

[0029] (1) Sliding form traction hoisting mechanism: Two groups of traction lug pins 3 are installed on both sides of the front end of the main sliding form 5, and a sliding form traction wire rope 1 is hung on each group of lug pins 3. Four lifting lugs 20 are also provided on the front and rear sides of the main sliding form 5 for traction, dragging, sliding and lifting on the slope.

[0030] (2) Sliding mode limit support mechanism: A wheel-type limit mechanism 4 is provided at the front end of the outer side of the main sliding form 5 to control the structural dimensions of the inner reverse slope 17 within the design requirements. The running wheel 4 falls on the outer square steel support track 2, and the width of the running wheel 4 is greater than the track surface width, and the difference between the two is less than the design deviation value of the inner reverse slope structure 17.

[0031] The slide form limiting device 4 on the main slide form 5 rolls on the support track 2 through wheels. The support track 2 is fixed on the steel mesh of the slope to control the two winches to run synchronously to ensure that the main slide form 5 is dragged and slid upward in parallel.

[0032] The wheeled limiting mechanism 4 is mainly used to control the structural size of the inner reverse slope 17 within the design requirements. When the toe plate concrete is dragged and poured, a lateral force will be generated on the reverse slope section on one side of the toe plate. This lateral force tends to push the sliding form toward the other side of the mountain. The wheeled limiting mechanism 4 is set in front of one end of the main sliding form to solve the problem of lateral displacement of the sliding form.

[0033] The traveling wheel in the wheel-type limiting mechanism 4 falls on the outer square steel support track 2, and the support track 2 is arranged and fixed on the slope steel mesh as required. The tread width of the traveling wheel is Xmm wider than the surface of the square steel track, and the X value is less than the design deviation value of the inner reverse slope structure 17. When the slipform on the toe plate is pulled and dragged upward, as long as the two winches are controlled synchronously and the slipform is controlled to slide upward in parallel, the structural shape and structural size of the reverse slope of the toe plate can be controlled within the range of design requirements.

[0034] (3) Sliding rail: According to the thickness of the concrete poured on the top of the toe plate reinforcement (thickness of the protective layer), a hollow square steel with the same thickness is selected as the support rail of the sliding formwork (i.e., support rail 2).

[0035] The outer supporting rail 2 is mainly used to support the slipform to ensure the thickness of concrete pouring, while the inner supporting rail 2 is not only used to ensure the thickness of concrete, but also used for the slipform limiting device 4 of the walking slipform limiting mechanism.

[0036] The length of the support rail 2 is made into standard sections according to the initial setting time of the concrete and the sliding distance of the slipform, which is pre-installed in front of the slipform and then gradually removed behind the slipform.

[0037] (3) Sliding form safety device: A slide form safety device 14 is installed on both sides of the main slide form 5, and the device is composed of a manual turntable 14-1, a turntable stop pin 14-5, a wire rope drum 14-4, a wire rope 14-3, a hook 14-2, etc. One end of the wire rope 14-3 is fixed on the drum 14-4 of the safety device 14, and the other end is connected to the steel hook 14-2.

[0038] When the sliding form 5 rises, the operator timely turns the safety device 14 to tighten the wire rope 14-3 to ensure that the sliding form will not slide down when the winch fails.

[0039] (4) Track dismantling platform: A track removal springboard 6 is arranged above the support track 2 at the rear end of the sliding formwork. The track removal springboard 6 is composed of a jump beam plate 6-1, a traction ear plate pin 6-2, a lock screw buckle 6-3, a beam seat 6-4, an ear plate seat pin 6-5, etc. The beam seat 6-4 is welded to the main sliding form steel 5, and the ear plate seat pin 6-5 is welded to the sliding formwork working platform steel 13, so that the removal platform and the sliding formwork 5 are connected as a whole.

[0040] During actual construction: (1) Preliminary preparation: First, install the toe plate steel mesh on the slope of the mountain, and then lay hollow square steel on the steel mesh as the support track 2. The length of the support track 2 is made into a standard section according to the initial setting time of the concrete and the sliding distance of the slipform, and is installed in front of the slipform system in advance.

[0041] (2) Installation of the slipform system: Install the main sliding form 5 and the auxiliary sliding form 10 on the support rail 2 to ensure that they are in the correct position. Install the sliding form traction lug seat 3 on both sides of the front end of the main sliding form 5, hang the sliding form traction wire rope 1, and connect it to the slow electric winch.

[0042] (3) Concrete pouring: When pouring concrete, a slow electric winch is used to pull the main sliding form 5 and the auxiliary sliding form 10 upward along the support track 2 by pulling the sliding form traction wire rope 1 on the sliding form traction lug seat 3. In this process, the running wheels 4-6 of the sliding form limiting device 4 roll on the outer support track 2 to ensure that the sliding form slides upward in parallel, thereby controlling the structural shape and size of the toe plate reverse slope 17.

[0043] (3) Construction safety assurance: During the rising process of the sliding form 5, the operating personnel need to adjust the sliding form safety insurance mechanism 14 in time to ensure that the sliding form will not slide down when the winch fails. In addition, the operating personnel should always stand on the working platform and pay attention to the safety of the guardrail.

[0044] (5) Track removal: After the concrete pouring is completed, the support track 2 is gradually removed at the rear end of the slipform. The track removal springboard 6 is used to remove the track. The beam seat 6-4 in the track removal springboard 6 is welded to the main sliding model steel 5-4, and the ear plate seat pin 6-5 is welded to the upper steel of the sliding form work platform 13, so that the removal platform and the sliding form 5 are connected as a whole, and the personnel stand on the springboard 6-1 to remove the support track 2.

Claims

1. A toe plate sliding form structure of an ultra-high gravel face rockfill dam, characterized by: It comprises a main sliding mold (5) and an auxiliary sliding mold (10), wherein the auxiliary sliding mold (10) is arranged at one end of the main sliding mold (5) and the auxiliary sliding mold (10) is arranged parallel to an inner reverse slope (17) on one side of a toe plate inclined surface (16); Support rails (2) are arranged on both sides of the toe plate inclined surface (16); a slide mold limiting device (4) is arranged at the front end of one side of the main slide mold (5); the slide mold limiting device (4) is a wheeled structure; the slide mold limiting device (4) on the main slide mold (5) is mounted on the support rails (2); Sliding mold safety mechanisms (14) are installed on both sides of the main sliding mold (5).

2. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 1 is characterized by: The front end of the main sliding mold (5) is provided with a main sliding mold steel (5-1), one of the main sliding mold steels (5-1) is provided with a steel beam (25), and a roller (26) is provided at the front end of the steel beam (25); A hinge seat (24) is provided on the main sliding mold steel (5-1), and the rear end of the steel beam (25) is movably arranged on the hinge seat (24) and combined with a roller (26) to form a sliding mold limiting device (4).

3. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 2 is characterized by: A laser transmitter (20) is provided on the steel beam (25) where the sliding mold limiting device (4) is located, and a steel beam (25) is fixedly provided on another main sliding mold steel (5-1). A laser receiver (22) is provided at the front end of the steel beam (25), and the laser transmitter (20) and the laser receiver (22) are aligned in the horizontal direction.

4. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 1 is characterized by: A sliding form traction lug seat (3) is provided on one side of the front end of the main sliding form (5) close to the sliding form limiting device (4), and a sliding form traction steel wire rope (1) is connected to the sliding form traction lug seat (3).

5. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 1 is characterized by: A track removal springboard (6) is provided on one side of the rear end of the main sliding form (5) away from the auxiliary sliding form (10); The track removal springboard (6) comprises two springboards (6-1), one end of the springboard (6-1) being movably arranged on a beam seat (6-4) on the rear end of the main sliding form (5), a traction ear plate pin (6-2) being provided in the middle of the springboard (6-1), an ear plate seat pin (6-5) being provided on the main sliding form (5) above the beam seat (6-4), and a rigging with a locking screw buckle (6-3) being provided between the traction ear plate pin (6-2) and the ear plate seat pin (6-5).

6. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 1 is characterized by: A lifting lug (23) is also provided on the front end of the main sliding mold (5).

7. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 1 is characterized by: The support rail (2) is a square steel structure consisting of a front rail section (2-1), a middle rail section (2-3) and a rear rail section (2-4), and adjacent rail sections are connected and fixed by rail connection pressing plates (2-2) arranged in the rail sections. Support steel bars (2-6) are provided at the bottom of the support track (2), and track limiting steel bars (2-5) located on both sides of the support track (2) are provided above the support steel bars (2-6).

8. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 1 is characterized by: A first plastering platform (7) is provided at the rear end of the main sliding form (5), and a first protective railing (8) is provided on the first plastering platform (7); A sliding form work platform (13) is provided at the front end of the main sliding form (5), and a second protective railing (12) is provided on the sliding form work platform (13).

9. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 1 is characterized by: The slide form safety insurance mechanism (14) on both sides of the main slide form (5) comprises a manual turntable (14-1), the manual turntable (14-1) is provided with a wire rope drum (14-4), a wire rope (14-3) is wound around the wire rope drum (14-4), and a hook (14-2) is fixed to one end of the wire rope (14-3); The bases on both sides of the manual turntable (14-1) are provided with turntable stop pin locks (14-5), and the turntable stop pin locks (14-5) extend to realize the positioning of the manual turntable (14-1); The hook (14-2) is connected to the dam surface steel mesh or the anchor hook.

10. The toe plate sliding form structure of the ultra-high gravel face rockfill dam according to claim 1, characterized in that: The wheel width in the sliding form limiting device (4) is greater than the width of the supporting track (2), and the difference between the two is less than the design deviation value of the inner reverse slope (17). When the main sliding form (5) on the toe plate is pulled and slid upward, the main sliding form (5) is controlled to slide upward in parallel by controlling the two winches synchronously, so that the structural shape and structural dimensions of the inner reverse slope (17) of the toe plate can be controlled within the range of design requirements.

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