Light and shade combined gravity type variable-angle concrete chute

Abstract

The utility model discloses a light and shade combined gravity type variable-angle concrete chute which is characterized in that a vertical tumbling barrel is erected at an air shaft opening or an elevator shaft opening of an existing structure to reduce the vertical pouring height, and a fastener type steel pipe scaffold is adopted to erect an inclined concrete pouring channel; therefore, large-volume concrete can be rapidly poured through the tumbling barrel and the chute under the action of gravity by reasonably utilizing the structural height difference. The first section of the chute scaffold is arranged on a floor slab and receives concrete falling from the tumbling barrel. The out-of-floor chute scaffold falls on the raft lower iron reinforcing steel bar, and the scaffold steel pipe and the raft lower iron reinforcing steel bar are fixed through a reinforcing steel bar support. The chute concrete channel adopts a structure of a template and a galvanized iron sheet or a corrugated pipe and a galvanized iron sheet, so that the gliding resistance of the chute channel is reduced, meanwhile, variable-angle erection of the chute channel is realized, and the requirements of a raft concrete pouring part are met.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically a gravity-type variable-angle concrete chute combining open and closed sections, which is particularly suitable for concrete pouring construction in ultra-deep foundation pit raft projects. Background Technology

[0002] With the increasing scarcity of urban construction land, super high-rise buildings and ultra-deep foundation pit projects are constantly emerging in urban centers. Due to the limited site conditions, the construction of ultra-thick foundation raft slabs has become a challenge for construction organization. Ultra-thick raft slab projects are large in scale and have tight construction periods. How to quickly complete the pouring of ultra-large volume raft slab concrete has become a key factor restricting the construction of ultra-thick foundation raft slabs in deep foundation pits.

[0003] Therefore, it is particularly important to develop a gravity-driven variable-angle concrete chute that combines light and dark elements. Utility Model Content

[0004] The purpose of this invention is to provide a gravity-fed variable-angle concrete chute that combines light and dark sections to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a gravity-type variable-angle concrete chute with both open and closed sections, including chute scaffolding, buckets, chutes, and chute concrete channels;

[0006] A double-channel steel is installed at the opening of the basement structure. The bucket and the chute are located at the bottom of the double-channel steel, and the chute is located below the bucket. Both the bucket and the chute are vertically arranged. The chute is fixed to the chute scaffolding by guy ropes.

[0007] The concrete chute is inclined at the bottom of the cistern to receive the concrete falling from the cistern.

[0008] The first section of the concrete chute is erected at a variable angle on the floor slab to adapt to the requirements of the raft concrete pouring location.

[0009] The concrete chute channel is equipped with reinforcing plates at the traditional ash drop points and at angle changes.

[0010] The bottom of the chute scaffolding is connected to the raft slab reinforcement.

[0011] As a preferred embodiment, the chute scaffolding is erected at a height not exceeding 18m, with longitudinal and transverse spacing not exceeding 1.6m and step distance not exceeding 1.5m, and scissor bracing is installed along the longitudinal direction of the chute scaffolding to enhance stability.

[0012] As a preferred embodiment, the chute scaffolding is a coupler-type steel pipe scaffolding.

[0013] As a preferred embodiment, the chute concrete channel adopts a structure of formwork plus galvanized iron sheet or corrugated pipe plus galvanized iron sheet.

[0014] As a preferred embodiment, during the laying of the concrete chute, the galvanized iron sheet and the small crossbars are fixed every 0.75m to ensure the stability of the chute.

[0015] As a preferred embodiment, the guy ropes are symmetrically arranged at the material unloading points of the first two chute drums on the side of the chute scaffolding structure.

[0016] As a preferred embodiment, the chute scaffolding and the raft reinforcement are fixed together by steel reinforcement brackets or pre-embedded ground anchors.

[0017] As a preferred embodiment, the reinforcing plate is a thickened steel plate.

[0018] The advantages of this invention compared to existing technologies are as follows: It utilizes existing structural ventilation shaft or elevator shaft openings to construct vertical chutes, reducing the vertical pouring height. It employs coupler-type steel pipe scaffolding to construct inclined concrete pouring channels, thus rationally utilizing structural height differences to allow large volumes of concrete to be rapidly poured under gravity through the chutes and troughs. The first section of the trough scaffolding rests on the floor slab, receiving the concrete falling from the chutes. The scaffolding extending beyond the floor rests on the reinforcing steel bars under the raft foundation, with the scaffolding steel pipes fixed to the reinforcing steel bars using specially designed steel reinforcement supports. The trough concrete channel uses a formwork structure with galvanized iron sheets or corrugated pipes with galvanized iron sheets to reduce the downward resistance of the trough channel. Simultaneously, it allows for variable-angle construction of the trough channel to adapt to the requirements of the raft foundation concrete pouring location. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0021] As shown in the figure: 1. Double channel steel, 2. Hoisting bucket, 3. String cylinder, 4. Reinforcing plate, 5. Concrete chute channel, 6. Embedded ground anchor, 7. Chute scaffolding, 8. Rebar support, 9. Guy rope. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they 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 of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0026] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 according to the specific circumstances.

[0027] A gravity-driven variable-angle concrete chute combining light and dark elements includes a chute scaffolding 7, a bucket 2, a tremie pipe 3, and a concrete chute channel 5.

[0028] A double-channel steel 1 is provided at the opening of the basement structure. The bucket 2 and the tremie pipe 3 are located at the bottom of the double-channel steel 1. The tremie pipe 3 is located below the bucket 2 to reduce the vertical pouring height. The bucket 2 and the tremie pipe 3 are both vertically arranged. The tremie pipe 3 is fixed to the chute scaffolding 7 by guy ropes 9.

[0029] The chute concrete channel 5 is inclinedly arranged at the bottom of the cistern 3 to receive the concrete falling from the cistern 3;

[0030] The five sections of the concrete chute are erected at varying angles on the floor slabs to accommodate the requirements of the raft concrete pouring area.

[0031] The concrete chute 5 is equipped with reinforcing plates 4 at the traditional ash drop points and at angle changes to resist the impact of concrete and ensure structural safety.

[0032] The bottom of the scaffolding 7, which exits the floor chute, rests on the steel reinforcement of the raft foundation and is connected to the raft foundation steel reinforcement using a special steel reinforcement support 8.

[0033] The chute scaffolding 7 shall be erected at a height not exceeding 18m, with longitudinal and transverse spacing not exceeding 1.6m and step distance not exceeding 1.5m. Scissor bracing shall be installed along the longitudinal direction of the chute scaffolding 7 to enhance stability.

[0034] The chute scaffolding 7 is a coupler-type steel pipe scaffolding.

[0035] The concrete chute 5 adopts a structure of formwork plus galvanized iron sheet or corrugated pipe plus galvanized iron sheet to reduce the sliding resistance of the concrete chute 5.

[0036] During the laying of the concrete chute channel 5, the galvanized iron sheet and the small crossbar are fixed every 0.75m to ensure the stability of the chute.

[0037] The guy ropes 9 are symmetrically arranged at the material unloading points of the two shunt drums 3 at the front of the chute scaffold 7 structure and at the concrete channel 5 of the chute at the highest point to enhance stability.

[0038] The chute scaffolding 7 is fixed to the raft reinforcement by steel bar supports 8 or pre-embedded ground anchors 6.

[0039] The reinforcing plate 4 is a thickened steel plate.

[0040] In the specific implementation of this utility model, a suitable structure is selected to reserve the opening: before construction, according to the site conditions, the ventilation shaft opening or elevator shaft that has been completed is selected, requiring the opening to be connected to the basement roof slab, and the corresponding basement roof slab to meet the conditions for concrete mixer trucks to turn around.

[0041] Determine the chute slope and planar positioning: The chute slope should be approximately 1:2.5 to 1:3 to avoid concrete segregation and ensure pouring speed. Based on the volume of the base slab concrete, the base slab thickness, and pouring requirements, rationally plan the chute's planar positioning, and install hoisting buckets and tremie pipes to determine the minimum vertical pouring height.

[0042] The location of the bucket chute and the steel reinforcement support under the raft slab are determined according to the location of the bucket chute. The steel reinforcement is spot-welded to the steel reinforcement under the raft slab, and the steel pipe of the scaffold is then inserted with connecting steel reinforcement to fix the uprights of the scaffold chute.

[0043] Erecting scaffolding for the chutes outside the structure and on each floor: Select appropriate horizontal, vertical, and step distances for the scaffolding based on the chute erection height and concrete pouring speed, erect the chute scaffolding, and ensure that it is connected to the stirrups on the base plate as a whole.

[0044] Constructing a concrete chute: Lay wooden beams and galvanized iron sheets on the chute to form a concrete chute channel.

[0045] Reinforcement and protection: Thick steel plates are used to reinforce the ash discharge port and angle change points of the chute, and guy ropes are installed to enhance the stability of the chute at high altitudes.

[0046] Concrete pouring and scaffolding dismantling: After the erected chute scaffolding has been inspected and accepted, concrete is poured. After completion, the chute scaffolding is dismantled in sequence, and the uprights are grouted. The dismantling sequence is the reverse of the erection sequence, proceeding layer by layer from top to bottom.

[0047] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A gravity-fed variable-angle concrete chute combining light and dark sections, characterized in that: This includes chute scaffolding, buckets, chutes, and concrete chute channels; A double-channel steel is installed at the opening of the basement structure. The bucket and the chute are located at the bottom of the double-channel steel, and the chute is located below the bucket. Both the bucket and the chute are vertically arranged. The chute is fixed to the chute scaffolding by guy ropes. The concrete chute is inclined at the bottom of the cistern to receive the concrete falling from the cistern. The first section of the concrete chute is erected at a variable angle on the floor slab to adapt to the requirements of the raft concrete pouring location. The concrete chute channel is equipped with reinforcing plates at the traditional ash drop points and at angle changes. The bottom of the chute scaffolding is connected to the raft slab reinforcement.

2. The light and dark combined gravity-type variable-angle concrete chute according to claim 1, characterized in that: The chute scaffolding shall be erected at a height not exceeding 18m, with longitudinal and transverse spacing not exceeding 1.6m and step distance not exceeding 1.5m. Scissor bracing shall be installed along the longitudinal direction of the chute scaffolding to enhance stability.

3. The light and dark combined gravity-type variable-angle concrete chute according to claim 1, characterized in that: The chute scaffolding is a coupler-type steel pipe scaffolding.

4. The light and dark combined gravity-type variable-angle concrete chute according to claim 1, characterized in that: The concrete chute channel adopts a structure of formwork plus galvanized iron sheet or corrugated pipe plus galvanized iron sheet.

5. A gravity-type variable-angle concrete chute combining light and dark sections according to claim 4, characterized in that: During the laying of the concrete chute, the galvanized iron sheet and the small crossbars are fixed every 0.75m to ensure the stability of the chute.

6. The light and dark combined gravity-type variable-angle concrete chute according to claim 1, characterized in that: The guy ropes are symmetrically arranged at the material unloading points of the first two chute drums on the structural side of the chute scaffold.

7. The light and dark combined gravity-type variable-angle concrete chute according to claim 1, characterized in that: The chute scaffolding and the raft reinforcement are fixed together by steel reinforcement brackets or pre-embedded ground anchors.

8. A gravity-type variable-angle concrete chute combining light and dark sections according to claim 1, characterized in that: The reinforcing plate is a thickened steel plate.

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