Light and shade combined gravity type variable-angle concrete chute

Abstract

The invention 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] The invention relates to the technical field of building construction, in particular to a light-and-dark combined gravity-type variable-angle concrete chute, which is particularly suitable for concrete pouring construction in ultra-deep foundation pit raft slab engineering. Background Art

[0002] With the increasing shortage of urban construction land, super-high-rise buildings and super-deep foundation pit projects are emerging in the city center. Due to the tight site environment conditions, the construction of super-thick foundation rafts has become a difficult problem for construction organization. The super-thick raft project is large in volume and has a tight construction period. How to quickly complete the pouring of super-large raft concrete has become a key factor restricting the construction of super-thick foundation rafts in deep foundation pits.

[0003] Therefore, it is particularly important to develop a light-and-dark combined gravity-type variable-angle concrete chute. Summary of the invention

[0004] The purpose of the present invention is to provide a light and dark combined gravity-type variable angle concrete chute to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is: a light-and-dark combined gravity-type variable-angle concrete chute, comprising a chute scaffold, a hanging bucket, a string tube and a chute concrete channel;

[0006] A double channel steel is provided at the opening of the basement structure, the bucket and the string tube are located at the bottom of the double channel steel, the string tube is located below the bucket, the bucket and the string tube are both arranged vertically, and the string tube is fixed to the chute scaffolding by a cable wind rope;

[0007] The chute concrete channel is obliquely arranged at the bottom of the string tube to receive the concrete falling from the string tube;

[0008] The first section of the chute concrete channel is on the floor slab and is set up at a variable angle to meet the requirements of the raft slab concrete pouring position;

[0009] The chute concrete channel is provided with reinforcement plates at the traditional ash falling places and the angle changing places;

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

[0011] As a preferred solution, the erection height of the chute scaffolding does not exceed 18m, the vertical and horizontal spacing is not more than 1.6m, the step distance is not more than 1.5m, and scissor braces are provided along the longitudinal direction of the chute scaffolding to enhance stability.

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

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

[0014] As a preferred solution, when laying the chute concrete channel, the galvanized iron sheet and the small cross bar are fixed every 0.75m to ensure the stability of the chute.

[0015] As a preferred solution, the guy ropes are symmetrically arranged at the first two string tube unloading locations on the sides of the chute scaffolding structure.

[0016] As a preferred solution, the chute scaffolding and the raft slab reinforcement are fixed by using reinforcement brackets or pre-buried ground anchors.

[0017] As a preferred solution, the reinforcement plate is a thickened steel plate.

[0018] Compared with the prior art, the advantages of the present invention are: using the existing structural wind shaft opening or elevator shaft opening to set up a vertical string tube to reduce the vertical pouring height, and using a fastener-type steel pipe scaffolding to set up an inclined concrete pouring channel, so as to reasonably utilize the structural height difference so that a large amount of concrete can be quickly poured through the string tube and the chute under the action of gravity. The first section of the chute scaffolding is located on the floor slab to receive the concrete dropped from the string tube. The chute scaffolding out of the floor falls on the iron steel bars under the raft slab, and the scaffolding steel pipe and the iron steel bars under the raft slab are fixed with specially designed steel bar brackets. The chute concrete channel adopts a template plus galvanized iron sheet or a corrugated pipe plus galvanized iron sheet structure, which has reduced the sliding resistance of the chute channel. At the same time, the chute channel can be set up at a variable angle to meet the requirements of the raft concrete pouring position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of the present invention is schematically shown in FIG. Figure 1 .

[0020] Figure 2 The structure of the present invention is schematically shown in FIG. Figure 2 .

[0021] As shown in the figure: 1. Double channel steel, 2. Bucket, 3. String tube, 4. Reinforcement plate, 5. Chute concrete channel, 6. Embedded ground anchor, 7. Chute scaffolding, 8. Steel bar support, 9. Guy rope. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "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 the present invention, "plurality" means at least 2.

[0026] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] A light and dark combined gravity type variable angle concrete chute, comprising a chute scaffold 7, a hanging bucket 2, a string tube 3 and a chute concrete channel 5;

[0028] A double channel steel 1 is provided at the opening of the basement structure, the bucket 2 and the string tube 3 are located at the bottom of the double channel steel 1, and the string tube 3 is located below the bucket 2 to reduce the vertical pouring height. The bucket 2 and the string tube 3 are both arranged vertically, and the string tube 3 is fixed to the chute scaffolding 7 by a cable wind rope 9;

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

[0030] The first section of the chute concrete channel 5 is on the floor slab and is set up at a variable angle to meet the requirements of the raft slab concrete pouring position;

[0031] The chute concrete channel 5 is provided with reinforcement plates 4 at the traditional ash falling places and the variable angle places to resist the impact force of concrete and ensure the safety of the structure;

[0032] The bottom of the out-floor chute scaffold 7 falls on the iron steel bars under the raft slab and is connected to the raft slab steel bars by a special steel bar bracket 8.

[0033] The erection height of the chute scaffolding 7 does not exceed 18m, the vertical and horizontal spacings are not greater than 1.6m, the step distance is not greater than 1.5m, and scissor braces are arranged along the longitudinal direction of the chute scaffolding 7 to enhance stability.

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

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

[0036] When the chute concrete channel 5 is laid, the galvanized iron sheet and the small cross bar are fixed every 0.75m to ensure the stability of the chute.

[0037] The guy ropes 9 are symmetrically arranged at the unloading positions of the first two string tubes 3 and the super-high chute concrete channel 5 on the side of the chute scaffolding 7 structure to enhance stability.

[0038] The chute scaffolding 7 and the raft slab reinforcement are fixed by using reinforcement brackets 8 or pre-buried anchors 6 .

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

[0040] When the present invention is implemented, a suitable structure is selected to reserve an opening: before construction, according to the site conditions of the construction site, a completed ventilation shaft opening or elevator shaft is selected, and the opening is required to be connected to the basement roof, and the corresponding basement roof can meet the conditions for the concrete tank truck to return.

[0041] Determine the chute slope and plane positioning: The chute slope is about 1:2.5 to 1:3 to avoid concrete segregation and ensure the pouring speed. Combined with the volume of the bottom slab concrete, the bottom slab thickness and the pouring requirements, the plane positioning of the chute is reasonably planned, and the bucket and string tube are set to determine the height of the vertical pouring.

[0042] Determine the chute scaffolding and the steel bar support under the raft slab according to the position of the bucket string: use measure steel bars and iron steel bars under the raft slab for spot welding, and then insert the scaffolding steel pipe into the connecting steel bar to fix the chute scaffolding uprights.

[0043] Set up the chute scaffolding outside the structure and on the floors: select the appropriate horizontal, vertical and step distances of the frame according to the chute erection height and concrete pouring speed, set up the chute scaffolding, and ensure that it is connected to the bottom plate stirrups as a whole.

[0044] Build the chute concrete channel: lay wooden planks and galvanized iron sheets on the chute to form the chute concrete channel.

[0045] Reinforcement and protection: Thickened steel plates are used to reinforce the ash outlet of the string tube and the angle change points, and guy ropes are installed to enhance the stability of the chute at super-high places.

[0046] Concrete pouring and scaffolding removal: After the completed chute scaffolding is inspected and accepted, concrete pouring is carried out. After completion, the chute scaffolding is removed in sequence and the poles are grouting. The removal sequence is opposite to the erection sequence, and is carried out layer by layer from top to bottom.

[0047] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A light and dark combined gravity type variable angle concrete chute, characterized by: Includes chute scaffolding, bucket, string tube and chute concrete channel; A double channel steel is provided at the opening of the basement structure, the bucket and the string tube are located at the bottom of the double channel steel, the string tube is located below the bucket, the bucket and the string tube are both arranged vertically, and the string tube is fixed to the chute scaffolding by a cable wind rope; The chute concrete channel is obliquely arranged at the bottom of the string tube to receive the concrete falling from the string tube; The first section of the chute concrete channel is on the floor slab and is set up at a variable angle to meet the requirements of the raft slab concrete pouring position; The chute concrete channel is provided with reinforcement plates at the traditional ash falling places and the angle changing places; The bottom of the chute scaffolding is connected with the raft slab reinforcement.

2. The light-dark combined gravity-type variable angle concrete chute according to claim 1, characterized in that: The erection height of the chute scaffolding is not more than 18m, the vertical and horizontal spacing is not more than 1.6m, the step distance is not more than 1.5m, and scissor braces are arranged along the longitudinal direction of the chute scaffolding to enhance stability.

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

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

5. The light-dark combined gravity-type variable angle concrete chute according to claim 4 is characterized in that: When the chute concrete channel is laid, the galvanized iron sheet and the small cross bar are fixed every 0.75m to ensure the stability of the chute.

6. The light-dark combined gravity-type variable angle concrete chute according to claim 1, characterized in that: The guy ropes are symmetrically arranged at the first two string tube unloading positions starting from the sides of the chute scaffolding structure.

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

8. The light-dark combined gravity-type variable angle concrete chute according to claim 1, characterized in that: The reinforcement plate is a thickened steel plate.

Images