Reinforcement cage concrete shaft bottom wall module for deep and large vertical shaft

Abstract

The reinforcement cage concrete shaft bottom wall module for the deep and large shaft comprises a reinforcement mesh, a flange plate, a center plate and concrete, the reinforcement mesh comprises an inner reinforcement mesh and an outer reinforcement mesh which are coaxially arranged, and a plurality of radial connecting ribs used for connecting the inner reinforcement mesh and the outer reinforcement mesh; the inner side reinforcing mesh is composed of inner side radial deformed steel bars and inner side annular deformed steel bars which are connected in a criss-cross mode, the outer side reinforcing mesh is composed of outer side radial deformed steel bars and outer side radial deformed steel bars which are connected in a criss-cross mode, and the upper ends of the inner side radial deformed steel bars and the outer side radial deformed steel bars and the lower ends of the inner side radial deformed steel bars and the outer side radial deformed steel bars are connected through flange plates and center plates. Concrete is poured on the reinforcement cage composed of the reinforcement mesh, the flange plate and the center plate, the mode that thick steel plates are spliced into a steel box is abandoned, the self weight can be greatly reduced, hoisting is convenient, the distance between the radial deformed steel bars can be accurately controlled by positioning the upper ends and the lower ends of the radial deformed steel bars, the radial deformed steel bars are distributed more evenly and reasonably, and it is ensured that the strength meets the requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft construction, in particular to a reinforced concrete shaft bottom wall module for a deep and large shaft. Background Art

[0002] Vertical shafts are widely used in the ventilation of underground pipelines in the fields of coal, subway, etc. and for the entry and exit of personnel and materials. After the vertical shaft is completed, it is necessary to use concrete, brickwork and other methods to make the shaft to prevent the shaft wall from collapsing. In order to improve construction efficiency, the existing shafts are basically spliced. For the bottom wall module at the bottom of the shaft, it is subjected to large forces and has high strength requirements. Thick steel plates are mostly spliced ​​into steel boxes and then poured with concrete. The deep and large vertical shaft bottom wall modules made in this way have a very large dead weight and high requirements for lifting equipment and lifting points. At the same time, it is difficult to drill holes at the bottom after pouring to judge the solidification of the concrete. After the vertical shaft is installed, in some cases, reverse blasting is required to drill through the bottom wall module to achieve connectivity with the underground pipeline below. Thicker steel plates will hinder reverse blasting. Utility Model Content

[0003] The purpose of the utility model is to overcome one or more disadvantages in the prior art and to provide a reinforced cage concrete shaft bottom wall module for a deep and large vertical shaft.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that a reinforced cage concrete well bottom wall module for a deep and large vertical shaft comprises:

[0005] A steel mesh, the steel mesh comprising an inner steel mesh and an outer steel mesh arranged coaxially, and radial connecting bars for connecting the inner steel mesh and the outer steel mesh, the inner steel mesh is composed of inner radial threaded steel bars and inner circumferential threaded steel bars connected in a crisscross manner, the outer steel mesh is composed of outer radial threaded steel bars and outer radial threaded steel bars connected in a crisscross manner, the inner steel mesh and the outer steel mesh are arranged coaxially, there are a plurality of radial connecting bars, the plurality of radial connecting bars are evenly distributed along the axis of the inner steel mesh or the outer steel mesh and are divided into multiple layers in the up and down direction;

[0006] A flange, which is arranged above the steel mesh and is used to connect the upper ends of the inner radial threaded steel and the outer radial threaded steel;

[0007] A center plate, the center plate comprising an inner center plate and an outer center plate, the inner center plate being located at the bottom center of the inner steel mesh and being used to connect the lower end of the inner radial threaded steel bar, the outer center plate being located at the bottom center of the outer steel mesh and being used to connect the lower end of the outer radial threaded steel bar;

[0008] Concrete is poured on a steel cage composed of the steel mesh, the flange and the center plate.

[0009] Preferably, both ends of the radial connecting ribs are bent into hooks, and the hooks are hooked onto the inner annular threaded steel bar or the outer annular threaded steel bar.

[0010] Preferably, a long strip of pouring opening is provided on the flange, and the pouring opening passes through the flange in the up-down direction. There are multiple pouring openings and they are evenly distributed around the axis of the flange.

[0011] Further preferably, the steel cage concrete shaft bottom wall module for the deep and large vertical shaft also includes a hanger, the lower end of which extends into the steel cage and is connected to the inner steel mesh and / or the outer steel mesh, and the upper end of which passes through the flange and extends upward.

[0012] Further preferably, the suspension rod is in a "J" shape, the portion of the lower end of the suspension rod extending inwardly is welded to the inner annular threaded steel bar, and the portion of the lower end of the suspension rod extending outwardly is welded to the outer annular threaded steel bar.

[0013] Further preferably, the flange is provided with a hanger hole for the upper end of the hanger to pass through, there are a plurality of hanger holes which are evenly distributed around the axis of the flange, and the hanger holes are staggered with the casting holes.

[0014] Preferably, the lower surface of the flange is connected with an inner gear ring for lap welding the upper end of the inner radial threaded steel and an outer gear ring for lap welding the upper end of the outer radial threaded steel, the inner gear ring is arranged close to the inner edge of the flange, the inner gear ring includes a plurality of vertical tooth plates evenly distributed along the axial line of the flange, the vertical tooth plates are vertically welded to the lower surface of the flange, the outer gear ring is arranged close to the outer edge of the flange, the outer gear ring is in the shape of an annular plate coaxial with the flange and is vertically welded to the lower surface of the flange, and the lower end face of the outer gear ring is serrated.

[0015] Preferably, a mounting plate for mounting a bracket is also connected to the outer side of the outer steel mesh, and there are multiple mounting plates that are evenly distributed around the axis of the outer steel mesh, and all the mounting plates are located at the same height.

[0016] Further preferably, the bracket is made of an H-shaped steel beam.

[0017] Preferably, the center plate is provided with a through hole penetrating the center plate in the up-down direction, there are multiple through holes evenly distributed around the axis of the center plate, and the through holes on the inner center plate are aligned with the through holes on the outer center plate.

[0018] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0019] The utility model provides a steel cage concrete well bottom wall module for a deep and large vertical shaft, comprising a steel mesh, a flange, a center plate and concrete. The steel mesh comprises an inner steel mesh and an outer steel mesh which are coaxially arranged, and a plurality of radial connecting bars for connecting the inner steel mesh and the outer steel mesh, so that the inner steel mesh is composed of inner radial threaded steel and inner circumferential threaded steel which are crisscrossed, and the outer steel mesh is composed of outer radial threaded steel and outer radial threaded steel which are crisscrossed. The flange and the center plate are used to respectively connect the upper ends of the inner and outer radial threaded steel and the lower ends of the inner and outer radial threaded steel, and concrete is poured on the steel cage composed of the steel mesh, the flange and the center plate, and the method of splicing steel boxes with thick steel plates is abandoned. The dead weight of the well bottom wall module can be greatly reduced, and hoisting is convenient. By positioning and connecting the upper and lower ends of the radial threaded steel, the spacing of the radial threaded steel can be accurately controlled, so that the distribution of the radial threaded steel in the steel mesh is more uniform and reasonable, thereby ensuring that the strength of each part of the well bottom wall module meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of a preferred embodiment of the utility model.

[0021] Figure 2 yes Figure 1 Schematic diagram after the bracket is connected.

[0022] Figure 3 yes Figure 1 Schematic diagram of longitudinal section.

[0023] Figure 4 , Figure 5 yes Figure 1 Schematic diagram after removing the concrete.

[0024] Figure 6 yes Figure 4 Schematic diagram of the center flange.

[0025] Figure 7 yes Figure 5 Schematic diagram of the center flange.

[0026] Figure 8 yes Figure 4 Schematic diagram of the middle boom.

[0027] Fig. 9 , Fig.10 It is a schematic diagram of the caisson process of the preferred embodiment of the utility model.

[0028] Among them: 1. Deep and large vertical shaft; 2. Wellhead pad; 3. Lifting wire rope; 4. Upper pipe ring; 11. Inner steel mesh; 111. Inner radial threaded steel; 112. Inner circumferential threaded steel; 12. Outer steel mesh; 121. Outer radial threaded steel; 122. Outer circumferential threaded steel; 13. Radial connecting ribs; 131. Hook; 20. Flange; 21. Casting mouth; 22. Hanger rod hole; 23. Inner gear ring; 231. Vertical gear plate; 24. Outer gear ring; 31. Inner center plate; 32. Outer center plate; 33. Through hole; 40. Concrete; 50. Hanger rod; 60. Mounting plate; 61. Bracket. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0030] like Figures 1 to 10 As shown, the utility model provides a steel cage concrete well bottom wall module for a deep and large vertical shaft, including a steel mesh, a flange 20, a center plate, and concrete 40, wherein the steel mesh includes an inner steel mesh 11 and an outer steel mesh 12 arranged coaxially, and radial connecting bars 13 for connecting the inner steel mesh 11 and the outer steel mesh 12, the inner steel mesh 11 is composed of inner radial threaded steel bars 111 and inner annular threaded steel bars 112 connected in a criss-cross manner, the outer steel mesh 12 is composed of outer radial threaded steel bars 121 and outer annular threaded steel bars 122 connected in a criss-cross manner, the inner steel mesh 11 and the outer steel mesh 12 are coaxially arranged, and there are multiple radial connecting bars 13, and the multiple radial connecting bars 13 are arranged along the inner The axial lines of the side steel mesh 11 or the outer steel mesh 12 are evenly distributed and divided into multiple layers in the up and down directions; the flange 20 is arranged above the steel mesh, and the flange 20 is used to connect the upper ends of the inner radial threaded steel 111 and the outer radial threaded steel 121; the center plate includes an inner center plate 31 and an outer center plate 32, the inner center plate 31 is located at the bottom center of the inner steel mesh 11, and the inner center plate 31 is used to connect the lower end of the inner radial threaded steel 111, and the outer center plate 32 is located at the bottom center of the outer steel mesh 12, and the outer center plate 32 is used to connect the lower end of the outer radial threaded steel 121; concrete 40 is poured on the steel cage composed of the steel mesh, the flange 20 and the center plate.

[0031] The advantage of this setting is that it can abandon the method of splicing steel boxes with thick steel plates, thereby greatly reducing the weight of the well bottom wall module and facilitating lifting. It can also accurately control the spacing of the radial threaded steel bars, making the distribution of the radial threaded steel bars in the steel mesh more uniform and reasonable, thereby ensuring that the strength of each part of the well bottom wall module meets the requirements.

[0032] To facilitate connection, in the present embodiment, the two ends of the radial connecting rib 13 are bent into hooks 131, which are hooked on the inner annular threaded steel 112 or the outer annular threaded steel 122 and welded thereto. Preferably, the hooks 131 are hooked on the connection between the inner annular threaded steel 112 and the inner radial threaded steel 111 or the connection between the outer annular threaded steel 122 and the outer radial threaded steel 121 and welded thereto.

[0033] To facilitate pouring of concrete 40 , in this embodiment, a long strip of pouring opening 21 is opened on the flange 20 . The pouring opening 21 passes through the flange 20 in the up-down direction. There are multiple pouring openings 21 and they are evenly distributed around the axis of the flange 20 .

[0034] To facilitate lifting, the deep and large vertical shaft reinforced cage concrete shaft bottom wall module also includes a hanger 40, the lower end of the hanger 40 extends into the reinforced cage and is connected to the inner steel mesh 11 and the outer steel mesh 12, the upper end of the hanger 40 passes through the flange 20 and extends upward. Furthermore, the hanger 40 is in a "J" shape, the part of the lower end of the hanger 40 that extends inward is welded to the inner annular threaded steel 112, and the part of the lower end of the hanger 40 that extends outward is welded to the outer annular threaded steel 122. To facilitate the hanging rod 40 to pass through, further, a hanger hole 22 is opened on the flange 20 to facilitate the upper end of the hanger 40 to pass through. There are multiple hanger holes 22 and they are evenly distributed around the axial line of the flange 20, and the hanger holes 22 are staggered with the casting holes 21.

[0035] To facilitate the positioning and connection of the inner radial threaded steel 111 and the outer radial threaded steel 121, in the present embodiment, the lower surface of the flange 20 is connected with an inner gear ring 23 for lap welding the upper end of the inner radial threaded steel 111 and an outer gear ring 24 for lap welding the upper end of the outer radial threaded steel 121. The inner gear ring 23 is arranged close to the inner edge of the flange 20. The inner gear ring 23 includes a plurality of vertical tooth plates 231 evenly distributed along the axis of the flange 20. The vertical tooth plates 231 are vertically welded to the lower surface of the flange 20. The outer gear ring 24 is arranged close to the outer edge of the flange 20. The outer gear ring 24 is in the shape of an annular plate coaxial with the flange 20 and is vertically welded to the lower surface of the flange 20. The lower end face of the outer gear ring 24 is serrated.

[0036] To facilitate the subsequent welding operation with the upper pipe ring 4 during caisson, the deep and large vertical shaft reinforced cage concrete well bottom wall module also includes a mounting plate 50. Specifically, the mounting plate 50 is connected to the outside of the outer steel mesh 12. The mounting plate 50 is used to install the bracket 51. There are multiple mounting plates 50 and they are evenly distributed around the axis of the outer steel mesh 12. All mounting plates 50 are located at the same height. To improve the supporting effect, in this embodiment, the bracket 51 is a bracket made of an H-shaped steel beam.

[0037] In order to facilitate drilling to observe the solidification of concrete, in this embodiment, a through hole 33 is opened on the center plate along the up and down direction to penetrate the center plate. There are four through holes 33 and they are evenly distributed around the axis of the center plate. The through holes 33 on the inner center plate 31 are aligned with the through holes 33 on the outer center plate 32.

[0038] It should be noted that both the inner steel mesh 11 and the outer steel mesh 12 have an arc-shaped bottom, that is, the diameter of the center plate is limited. Preferably, the diameter of the center plate is 12-18% of the outer diameter of the upper end of the outer steel mesh 12. Specifically in this embodiment, the diameter of the center plate is 15% of the outer diameter of the upper end of the outer steel mesh 12.

[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A steel cage concrete well bottom wall module for a deep and large vertical shaft, characterized in that: include: A steel mesh, the steel mesh comprising an inner steel mesh and an outer steel mesh, and radial connecting bars for connecting the inner steel mesh and the outer steel mesh, the inner steel mesh being composed of inner radial threaded steel bars and inner circumferential threaded steel bars connected in a crisscross pattern, the outer steel mesh being composed of outer radial threaded steel bars and outer radial threaded steel bars in a crisscross pattern, the inner steel mesh and the outer steel mesh being coaxially arranged, the radial connecting bars being multiple, the multiple radial connecting bars being evenly distributed along the axis of the inner steel mesh or the outer steel mesh and being divided into multiple layers in the up and down direction; A flange, which is arranged above the steel mesh and is used to connect the upper ends of the inner radial threaded steel and the outer radial threaded steel; A center plate, the center plate comprising an inner center plate and an outer center plate, the inner center plate being located at the bottom center of the inner steel mesh and being used to connect the lower end of the inner radial threaded steel bar, the outer center plate being located at the bottom center of the outer steel mesh and being used to connect the lower end of the outer radial threaded steel bar; Concrete is poured on a steel cage composed of the steel mesh, the flange and the center plate.

2. The steel cage concrete bottom wall module for deep and large vertical shaft according to claim 1 is characterized in that: The two ends of the radial connecting ribs are bent into hooks, and the hooks are hooked on the inner annular threaded steel bar or the outer annular threaded steel bar.

3. The steel cage concrete bottom wall module for a deep and large vertical shaft according to claim 1 is characterized in that: The flange is provided with a long strip of pouring opening, which penetrates the flange in the up-down direction. There are a plurality of pouring openings which are evenly distributed around the axis of the flange.

4. The steel cage concrete bottom wall module for a deep and large vertical shaft according to claim 3 is characterized in that: The steel cage concrete shaft bottom wall module for a deep and large vertical shaft also includes a suspension rod, the lower end of which extends into the steel cage and is connected to the inner steel mesh and / or the outer steel mesh, and the upper end of the suspension rod passes through the flange and extends upward.

5. The steel cage concrete bottom wall module for a deep and large vertical shaft according to claim 4 is characterized in that: The suspension rod is in a "J" shape, the inwardly extending portion of the lower end of the suspension rod is welded to the inner annular threaded steel bar, and the outwardly extending portion of the lower end of the suspension rod is welded to the outer annular threaded steel bar.

6. The steel cage concrete bottom wall module for a deep and large vertical shaft according to claim 5 is characterized in that: The flange is also provided with a hanger hole for the upper end of the hanger to pass through. There are a plurality of hanger holes which are evenly distributed around the axis of the flange. The hanger holes and the pouring opening are staggered.

7. The steel cage concrete bottom wall module for a deep and large vertical shaft according to claim 1 is characterized in that: The lower surface of the flange is connected with an inner gear ring for lap welding the upper end of the inner radial threaded steel and an outer gear ring for lap welding the upper end of the outer radial threaded steel. The inner gear ring is arranged close to the inner edge of the flange, and the inner gear ring includes a plurality of vertical tooth plates evenly distributed along the axial center line of the flange, and the vertical tooth plates are vertically welded to the lower surface of the flange. The outer gear ring is arranged close to the outer edge of the flange, and the outer gear ring is in the shape of an annular plate coaxial with the flange and vertically welded to the lower surface of the flange, and the lower end face of the outer gear ring is serrated.

8. The steel cage concrete bottom wall module for a deep and large vertical shaft according to claim 1 is characterized in that: The outer side of the outer steel mesh is also connected with a mounting plate for mounting a bracket. There are multiple mounting plates that are evenly distributed around the axis of the outer steel mesh, and all the mounting plates are located at the same height.

9. The steel cage concrete bottom wall module for a deep and large vertical shaft according to claim 8, characterized in that: The bracket is made of H-shaped steel beam.

10. The steel cage concrete bottom wall module for a deep and large vertical shaft according to claim 1, characterized in that: The center plate is provided with a through hole penetrating the center plate in the up-down direction. There are a plurality of through holes evenly distributed around the axis of the center plate. The through holes on the inner center plate are aligned with the through holes on the outer center plate.

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