Anti-segregation construction device and method for high and large wallboard with dense upper opening steel bars

Abstract

The invention discloses an anti-segregation construction device and method for a high and large wallboard with dense upper opening steel bars. The device comprises pouring pipes pre-buried in a wall body and a distributor used for distributing concrete to the pouring pipes. The upper end of the pouring pipe extends to the position close to the position below an upper opening steel bar, branch pipes are distributed along the line at intervals, turning covers are arranged at pipe openings of the branch pipes, and the turning covers plug the pipe openings at the beginning, are pushed outwards when the inner side concrete pressure reaches a certain degree and reset to plug the pipe openings when bearing the outer side concrete pressure. Wing plates are additionally arranged on the two sides of the pouring pipe along the vertical seam position to serve as water stop plates; the distributor comprises a collecting cavity, an inlet pipe is arranged on the upper portion of the collecting cavity, outlet pipes corresponding to the pouring pipes are distributed on the lower portion of the collecting cavity, and conveying mechanisms are arranged in the outlet pipes. According to the device, vertical continuous and uniform pouring of the high and large wall plate with dense upper opening steel bars can be achieved, and many problems caused by layered pouring and concrete disintegration caused by too large concrete height difference are avoided.

Description

TECHNICAL FIELD

[0001] The present invention relates to concrete construction, and particularly to an anti-segregation construction device and method for tall wall panels with dense upper-mouth steel bars. BACKGROUND ART

[0002] During the construction of an all-underground integrated box sewage treatment plant, due to the requirements of the sewage treatment process for volume and the requirements of the integrated box wall for resisting the lateral pressure of soil, the wall height of the integrated box is relatively high and the steel bar configuration is relatively dense. The traditional chute can no longer pass through the upper-mouth steel bars of the wall to reach the bottom of the wall.

[0003] Currently, for tall wall panels with dense upper-mouth steel bars, formwork is usually supported in layers in the height direction and concrete is poured in layers in cooperation with a steel plate waterstop. However, pouring concrete in layers will result in more horizontal construction joints. The increase in horizontal construction joints will increase the probability of water seepage in concrete components. Moreover, a large amount of manpower and material resources are required for chiseling and joint cleaning at the concrete construction joint, with low efficiency and a long construction period. In addition, the formwork supported in layers is prone to quality problems such as offset, leakage of mortar, and out-of-plumb at the joint, and requires a high level of professionalism and proficiency of workers. SUMMARY OF THE INVENTION

[0004] The purpose of the present invention is to provide an anti-segregation construction device for tall wall panels with dense upper-mouth steel bars, and an anti-segregation construction method for tall wall panels with dense upper-mouth steel bars based on the above device. The device can achieve vertical continuous and uniform pouring of tall wall panels with dense upper-mouth steel bars, avoiding many problems caused by pouring in layers and concrete segregation caused by too large a concrete height difference.

[0005] The technical solution adopted by the present invention is as follows: An anti-segregation construction device for tall wall panels with dense upper-mouth steel bars includes a pouring pipe embedded in the wall and distributed along the wall direction, and a distributor located outside and used for distributing concrete to each pouring pipe; the upper end of the pouring pipe extends to near below the upper-mouth steel bars, the lower end extends to the bottom of the wall and is closed, and branch pipes are distributed at intervals along the line. A flap is provided at the orifice of the branch pipe. The flap blocks the orifice initially, is pushed outwards when the inner concrete pressure reaches a certain level, and resets to block the orifice when subjected to the outer concrete pressure. Wing plates are added on both sides of the pouring pipe along the line at the vertical joint position as waterstop plates. The branch pipes on the pouring pipe at the vertical joint position are on the inward side, and the branch pipes on the pouring pipes at other positions are on both sides; the distributor includes a collecting chamber. An inlet pipe for receiving concrete is provided at the upper part of the collecting chamber, and outlet pipes corresponding to each pouring pipe are distributed at the lower part. A conveying mechanism capable of conveying concrete and controlling the flow rate is provided in the outlet pipe, and the outlet pipe can pass through the upper-mouth steel bars and extend into the upper end of the corresponding pouring pipe.

[0006] Preferably, the upper end of the flap is hinged to the upper side of the pipe orifice, and a torsion spring is provided at the hinge. The torsion spring force is set such that when the height of the concrete above the flap in the pouring pipe is A, the flap is pushed open, and when the concrete outside the pouring pipe reaches the flap, the flap resets. A is less than the spacing between the branch pipes.

[0007] Preferably, the outlet pipe is a rigid pipe, and the conveying mechanism is a screw conveyor with a shaft. The input end of the screw conveyor is connected to the motor through a universal joint. The motor is installed outside the outlet pipe, and the universal joint passes through the outlet pipe in a sealed manner. The outlet pipe is detachably installed on the collecting cavity.

[0008] Preferably, the outlet pipe is a flexible pipe, and the conveying mechanism is a flexible screw conveyor. The input end of the flexible screw conveyor is connected to the motor through a universal joint. The motor is installed outside the collecting cavity, and the universal joint passes through the collecting cavity in a sealed manner.

[0009] Preferably, the diameter of the pouring pipe is 50 - 100 mm, and the spacing is 4 - 6 m.

[0010] Preferably, the diameter of the branch pipe is the same as that of the pouring pipe, the length is 0.5 m, and the spacing is 2 m.

[0011] Preferably, the diameter of the outlet pipe is 20 cm.

[0012] Preferably, the width of the wing plate is 15 cm, and the thickness is not less than 1 cm.

[0013] Preferably, the pouring pipe, the branch pipe, and the wing plate are made of PPR material.

[0014] A construction method for preventing segregation of tall wall panels with dense upper - mouth steel bars, based on the above - mentioned construction device for preventing segregation of tall wall panels with dense upper - mouth steel bars: During the construction of wall steel bars, pouring pipes are embedded along the wall direction in the wall body and fixed on the wall steel bars; then the wall formwork is installed, the distributor is placed above the pouring area, the inlet pipe is connected to a concrete pump truck or other concrete - providing equipment, and the outlet pipe passes through the upper - mouth steel bars and extends into the upper end of the corresponding pouring pipe. Then, the concrete - providing equipment and each conveying mechanism are started for pouring; during pouring, the concrete successively enters each pouring pipe through the collecting cavity and the outlet pipe. The conveying mechanism makes the flow rate of the pouring pipes at the vertical joint position half of that of the pouring pipes at other positions. After the concrete forms a certain height in the pouring pipe, it first pushes open the lowest - layer flap and flows out from the lowest - layer branch pipe. The concrete outside the pouring pipe gradually rises. When the outside concrete reaches the lowest - layer flap, the lowest - layer flap resets to block the lowest - layer pipe orifice. Then, after the concrete in the pouring pipe rises to a certain height above the second - layer flap, it first pushes open the second - layer flap and flows out from the second - layer branch pipe. The concrete outside the pouring pipe gradually rises. When the outside concrete reaches the second - layer flap, the second - layer flap resets to block the second - layer pipe orifice. In this way, when the concrete gradually rises to the uppermost - layer flap and all the flaps are blocked, the concrete overflows from the upper end of the pouring pipe and completes the subsequent pouring; after pouring, the distributor is removed.

[0015] The beneficial effects of the present invention are as follows: The device embeds the pouring pipes and provides an outlet pipe that can pass through the upper - mouth steel bars and extend into the upper end of the corresponding pouring pipe. Therefore, it can realize the pouring of tall wall panels with dense upper - mouth steel bars; in this device, the branch pipes and flaps arranged in layers can be enabled layer by layer as the pouring progresses, and the lower - layer branch pipes are closed before the upper - layer branch pipes are enabled. At the same time, with the flow control of the conveying mechanism, synchronous pouring of each pouring pipe can be achieved. Therefore, vertical continuous and uniform pouring can be realized, avoiding many problems caused by layered pouring and concrete segregation caused by excessive concrete height difference; moreover, the wing plate in this device serves as a water - stop plate, which is not easily displaced compared with conventional water - stop plates and has a better effect. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the construction device for preventing segregation of tall wall panels with dense upper - mouth steel bars in the present invention.

[0018] In the figure: 1 - Upper mouth steel bars; 2 - Pouring pipe; 3 - Branch pipe; 4 - Flip cover; 5 - Wing plate; 6 - Collection chamber; 7 - Inlet pipe; 8 - Outlet pipe; 9 - Motor; 10 - Universal joint; 11 - Conveying mechanism. Detailed implementation mode

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application that is claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0021] The features and performance of the present application will be further described in detail below in conjunction with the embodiments.

[0022] Embodiment 1 This embodiment discloses a construction device for preventing segregation of tall wall panels with dense upper mouth steel bars, as Figure 1 shown, including a pouring pipe 2 and a distributor; wherein: The pouring pipe 2 is embedded in the wall body and distributed along the wall body direction. The upper end of the pouring pipe 2 extends to near below the upper mouth steel bars 1, the lower end extends to the bottom of the wall body and is closed, and branch pipes 3 are distributed at intervals along the line. A flip cover 4 is provided at the orifice of the branch pipe 3. The flip cover 4 blocks the orifice initially, is pushed outwards when the concrete pressure inside reaches a certain degree, and resets to block the orifice when subjected to the concrete pressure outside. Wing plates 5 are added on both sides along the line of the pouring pipe 2 at the vertical joint position as water stop plates. The branch pipes 3 on the pouring pipe 2 at the vertical joint position are on the inner side, and the branch pipes 3 on the pouring pipe 2 at other positions are on both sides. See Figure 1 ; The distributor is located outside and is used to distribute concrete to each pouring pipe 2. The distributor includes a collection chamber 6. An inlet pipe 7 for receiving concrete is provided at the upper part of the collection chamber 6, and outlet pipes 8 corresponding to each pouring pipe 2 are distributed at the lower part. A conveying mechanism 11 capable of conveying concrete and controlling the flow rate is provided in the outlet pipe 8. The outlet pipe 8 can pass through the upper mouth steel bars 1 and extend into the upper end of the corresponding pouring pipe 2. See Figure 1 ;

[0023] In this embodiment, the upper end of the flap 4 is hinged to the upper side of the pipe orifice, and a torsion spring is provided at the hinge. The torsion spring force is set such that when the height of the concrete above the flap 4 in the pouring pipe 2 is A, the flap 4 is pushed open, and when the concrete outside the pouring pipe 2 reaches the flap 4, the flap 4 resets. A is less than the spacing between the branch pipes 2. Such a setting can utilize the concrete drop to open the flap 4 and close the lower layer of branch pipes 2 before the upper layer of branch pipes 2 is enabled, avoiding the outflow of concrete from the lower layer of branch pipes 2.

[0024] In this embodiment, there are two solutions for the outlet pipe 8 and the conveying mechanism 11: 1) The outlet pipe 8 is a rigid pipe, and the conveying mechanism 11 is a screw conveyor with a shaft. The input end of the screw conveyor is connected to the motor 9 through a universal joint 10. The motor 9 is installed outside the outlet pipe 8, and the universal joint 10 is sealed through the outlet pipe 8. The outlet pipe 8 is detachably installed on the collecting cavity 6. This solution is suitable for the pouring pipes 2 with a determined spacing. When the spacing of the pouring pipes 2 in each section of the wall is determined and consistent, a set of distributors can also complete the pouring work for all sections.

[0025] 2) The outlet pipe 8 is a flexible pipe, and the conveying mechanism 11 is a flexible screw conveyor. The input end of the flexible screw conveyor is connected to the motor 9 through a universal joint 10. The motor 9 is installed outside the collecting cavity 6, and the universal joint 10 is sealed through the collecting cavity 6. It is suitable for both the pouring pipes 2 with a determined spacing and the pouring pipes 2 with an undetermined spacing. When the spacing of the pouring pipes 2 in each section of the wall is inconsistent or there are installation errors, the flexible outlet pipe 8 can also compensate for the spacing difference, and a set of distributors can be used.

[0026] To ensure the pouring effect and efficiency, it is necessary to design the sizes and distributions of the pouring pipe 2, the branch pipe 3, the outlet pipe 8, and the wing plate 5 well. In this embodiment, based on the pouring pipe 2, first determine the size and distribution of the pouring pipe 2, and then determine the sizes and distributions of the branch pipe 3, the outlet pipe 8, and the wing plate 5 accordingly. Specifically: the diameter of the pouring pipe 2 is 50 - 100 mm, the spacing is 4 - 6 m, the diameter of the branch pipe 3 is the same as that of the pouring pipe 2, the length is 0.5 m, the spacing is 2 m, the diameter of the outlet pipe 8 is 20 cm, the width of the wing plate 5 is 15 cm, and the thickness is not less than 1 cm. Among them, the pouring pipe 2, the branch pipe 3, and the wing plate 5 can be made of PPR material.

[0027] The device buries the pouring pipe 2 and provides an outlet pipe 8 that can pass through the upper mouth steel bars 1 and extend into the upper end of the corresponding pouring pipe 2, so it can realize the pouring of tall wall panels with dense upper mouth steel bars 1.

[0028] In this device, the branch pipes 3 and the flap covers 4 arranged in layers can be enabled layer by layer as the pouring progresses. Before the upper layer of branch pipes 3 is enabled, the lower layer of branch pipes 3 is closed. At the same time, with the flow control of the conveying mechanism 11, the pouring of each pouring pipe 2 can be synchronized. Therefore, vertical continuous and uniform pouring can be achieved, avoiding many problems caused by layered pouring and concrete segregation caused by excessive concrete height difference.

[0029] The wing plate 5 in this device serves as a water stop plate. Compared with conventional water stop plates, it is not easy to shift and has a better effect.

[0030] Embodiment 2 This embodiment discloses a construction method for preventing segregation of tall wall panels with dense upper-mouth steel bars. Based on the above-mentioned construction device for preventing segregation of tall wall panels with dense upper-mouth steel bars, the following steps are adopted: S1. During the construction of the wall body steel bars, the pouring pipes 2 are pre-buried along the wall body direction in the wall body, and each pouring pipe 2 is fixed on the wall body steel bars.

[0031] S2. Install the wall formwork, place the distributor above the pouring area, connect the inlet pipe 7 to a pump truck or other concrete supply equipment, and let the outlet pipe 8 pass through the upper-mouth steel bars 1 and extend into the upper end of the corresponding pouring pipe 2. Then start the concrete supply equipment and each conveying mechanism 11 for pouring. During pouring: The concrete sequentially passes through the collecting cavity 6 and the outlet pipe 8 and enters each pouring pipe 2. The conveying mechanism 11 makes the flow rate of the pouring pipes 2 at the vertical joint position half of the flow rate of the pouring pipes 2 at the other positions. After the concrete forms a certain height in the pouring pipe 2, it first pushes open the flap cover 4 at the lowest layer and flows out from the branch pipe 3 at the lowest layer. The concrete outside the pouring pipe 2 gradually rises. When the concrete outside reaches the flap cover 4 at the lowest layer, the flap cover 4 at the lowest layer resets to block the pipe orifice at the lowest layer. Then, after the concrete in the pouring pipe 2 rises to a certain height above the flap cover 4 at the second layer, it first pushes open the flap cover 4 at the second layer and flows out from the branch pipe 3 at the second layer. The concrete outside the pouring pipe 2 gradually rises. When the concrete outside reaches the flap cover 4 at the second layer, the flap cover 4 at the second layer resets to block the pipe orifice at the second layer. Thus, when the concrete gradually rises to the flap cover 4 at the uppermost layer and all the flap covers 4 are blocked, the concrete overflows from the upper end of the pouring pipe 2 and the subsequent pouring is completed.

[0032] S3. After pouring, remove the distributor.

[0033] The embodiments described above are some embodiments of the present application, rather than all embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

Claims

1. A construction device for preventing segregation of tall wall panels with dense upper-mouth steel bars, characterized in that: It includes casting pipes embedded in the wall and distributed along the wall direction, and a distributor located outside for distributing concrete to each casting pipe; the upper end of the casting pipe extends to near below the upper mouth steel bars, the lower end extends to the bottom of the wall and is closed, and branch pipes are distributed at intervals along the line. There is a flap at the orifice of the branch pipe. The flap blocks the orifice initially, is pushed outward when the concrete pressure inside reaches a certain level, and resets to block the orifice when subjected to the concrete pressure outside. Wing plates are added on both sides along the line of the casting pipe at the vertical joint position as water stop plates. The branch pipes on the casting pipes at the vertical joint position are on the inward side, and the branch pipes on the casting pipes at other positions are on both sides; the distributor includes a collecting cavity. The upper part of the collecting cavity is provided with an inlet pipe for receiving concrete, and the lower part is distributed with outlet pipes corresponding to each casting pipe. A conveying mechanism capable of conveying concrete and controlling the flow rate is provided in the outlet pipe, and the outlet pipe can pass through the upper mouth steel bars and extend into the upper end of the corresponding casting pipe.

2. The high-wall formwork segregation prevention construction device with dense upper-mouth steel bars as described in claim 1, characterized in that, The upper end of the flap is hinged to the upper side of the orifice, and a torsion spring is provided at the hinge. The torsion spring force is set such that the flap is pushed open when the height of the concrete above the flap in the casting pipe is A, and the flap resets when the concrete outside the casting pipe reaches the flap. A is less than the spacing of the branch pipes.

3. The high-wall formwork segregation prevention construction device with dense upper-mouth steel bars as described in claim 1, characterized in that: The outlet pipe is a rigid pipe, and the conveying mechanism is a screw conveyor with a shaft. The input end of the screw conveyor is connected to the motor through a universal joint. The motor is installed outside the outlet pipe, and the universal joint seals through the outlet pipe. The outlet pipe is detachably installed on the collecting cavity.

4. The high-wall formwork segregation prevention construction device with dense upper-mouth steel bars as claimed in claim 1, wherein: The outlet pipe is a flexible pipe, and the conveying mechanism is a flexible screw conveyor. The input end of the flexible screw conveyor is connected to the motor through a universal joint. The motor is installed outside the collecting cavity, and the universal joint seals through the collecting cavity.

5. The high-wall formwork anti-segregation construction device with dense upper-mouth steel bars as described in claim 1, characterized in that: The diameter of the casting pipe is 50 - 100 mm, and the spacing is 4 - 6 m.

6. The construction device for preventing segregation of tall wall panels with dense upper mouth steel bars as described in claim 5, characterized in that: The diameter of the branch pipe is the same as that of the casting pipe, the length is 0.5 m, and the spacing is 2 m.

7. The high-wall formwork segregation prevention construction device with dense upper-mouth steel bars as described in claim 5, characterized in that: The diameter of the outlet pipe is 20 cm.

8. The high-wall formwork anti-segregation construction device with dense upper-mouth steel bars as claimed in claim 5, wherein: The width of the wing plate is 15 cm, and the thickness is not less than 1 cm.

9. The high-wall formwork segregation prevention construction device with dense upper-mouth steel bars as described in claim 1, characterized in that: The casting pipe, branch pipe, and wing plate are made of PPR material.

10. A construction method for preventing segregation of tall wall panels with dense upper mouth steel bars, characterized in that, A high-wall formwork segregation prevention construction device with dense upper-mouth steel bars as described in any one of claims 1 to 9: During the construction of wall steel bars, pouring pipes are pre-embedded along the wall direction inside the wall and fixed to the wall steel bars; then the wall formwork is installed, and the distributor is placed above the pouring area. The inlet pipe is connected to a pump truck or other concrete supply equipment, and the outlet pipe passes through the upper-mouth steel bars and extends into the upper end of the corresponding pouring pipe. Then, the concrete supply equipment and each conveying mechanism are started for pouring; during pouring, the concrete sequentially enters each pouring pipe through the collecting cavity and the outlet pipe. The conveying mechanism makes the flow rate of the pouring pipes at the vertical joint position half of that of the pouring pipes at the other positions. After the concrete forms a certain height in the pouring pipe, it first pushes open the lowest-layer flip cover and flows out from the lowest-layer branch pipe. The concrete outside the pouring pipe gradually rises. When the outside concrete reaches the lowest-layer flip cover, the lowest-layer flip cover resets to block the lowest-layer pipe orifice. Then, after the concrete in the pouring pipe rises above the second-layer flip cover by a certain height, it first pushes open the second-layer flip cover and flows out from the second-layer branch pipe. The concrete outside the pouring pipe gradually rises. When the outside concrete reaches the second-layer flip cover, the second-layer flip cover resets to block the second-layer pipe orifice. Thus, when the concrete gradually rises to the uppermost-layer flip cover and all the flip covers are blocked, the concrete overflows from the upper end of the pouring pipe and completes the subsequent pouring; after pouring, the distributor is removed.

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