Truss bottom keel embedded type steel hanging box cofferdam

Abstract

The utility model provides a truss bottom keel embedded type steel hanging box cofferdam, and relates to the field of steel hanging box cofferdams, the truss bottom keel embedded type steel hanging box cofferdam comprises a steel casing mechanism, a steel hanging box mechanism, a bottom keel mechanism and a hanging mechanism, the bottom sealing concrete in the cofferdam becomes steel reinforced concrete, the bottom sealing concrete structure is reinforced, and the safety of the cofferdam structure is improved; the lower end of the truss body is fixedly connected with the bottom plate, so that the strength of the bottom plate is effectively enhanced, the bottom plate and the bottom keel mechanism jointly bear the vertical pressure of bottom sealing concrete, the heights of the steel hanging box mechanism and the hanging mechanism can be reduced, and materials are saved; and the peripheries of the truss body and the bottom plate are fixedly connected with the inner side wall of the steel hanging box anti-collision body, so that the stability of the steel hanging box anti-collision body can be improved, the water pressure can be better resisted, and the construction quality and the structural safety of the steel hanging box cofferdam are effectively enhanced.

Description

Technical Field

[0001] The utility model relates to the field of steel hanging box cofferdams, in particular to a truss bottom keel embedded type steel hanging box cofferdam. Background Art

[0002] Steel box cofferdams play an important role in large-scale engineering projects, such as bridge construction. Steel box cofferdams are a temporary structure in bridge construction, mainly used to protect the construction area and prevent natural factors such as water flow, wind and waves from affecting the construction. Steel box cofferdams are usually made of steel structures and have strong strength and stability. In complex water environments, the application of steel box cofferdams can effectively protect the construction area and ensure the safety and smooth progress of construction.

[0003] In general, steel box cofferdam plays an important role in the construction of bridges. It not only protects the safety of the construction area and bridges, but also ensures the smooth progress of construction.

[0004] As for the bottom keel of the steel box cofferdam, most of them are currently made of single-layer steel welded under the cofferdam bottom plate. This type of bottom keel requires a longer hanging system in the steel box cofferdam, which is inconvenient to operate when assembling the steel box. At the same time, the side plates of the steel box cofferdam are not capable of resisting external loads, and the construction quality cannot be guaranteed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a truss bottom keel embedded steel hanging box cofferdam, which can effectively enhance the construction quality and structural safety of the steel hanging box cofferdam.

[0006] The utility model is realized through the following technical solutions:

[0007] A truss bottom keel embedded steel hanging box cofferdam comprises a steel casing mechanism, a steel hanging box mechanism, a bottom keel mechanism and a hanging mechanism, wherein the steel casing mechanism comprises a plurality of steel casing units evenly arranged in the cofferdam, the steel hanging box mechanism comprises a steel hanging box anti-collision body, the bottom keel mechanism is embedded in the bridge foundation after pouring concrete as a part of the steel reinforcement skeleton, the bottom keel mechanism comprises a bottom plate and a truss body, the truss body is a truss structure, the lower end of the truss body is fixedly connected to the bottom plate, the circumference of the truss body and the bottom plate is fixedly connected to the inner side wall of the steel hanging box anti-collision body, the hanging mechanism is arranged on the steel casing unit, and the hanging mechanism is used to hang the bottom keel mechanism and the steel hanging box anti-collision body.

[0008] It can be seen that in the above technical scheme, the bottom keel mechanism of the utility model is buried in the bridge foundation after pouring concrete as part of the steel skeleton, so that the bottom concrete in the cofferdam becomes steel concrete, strengthening the bottom concrete structure and increasing the safety of the cofferdam structure; and the lower end of the truss body is fixedly connected to the bottom plate, which not only effectively enhances the strength of the bottom plate, so that the bottom plate and the bottom keel mechanism jointly bear the vertical pressure of the bottom concrete, but also can reduce the height of the steel hanging box mechanism and the hanging mechanism, saving materials; the truss body and the bottom plate are fixedly connected around the inner wall of the steel hanging box anti-collision body, which can increase the stability of the steel hanging box anti-collision body, and thus better resist water pressure, effectively enhancing the construction quality and structural safety of the steel hanging box cofferdam.

[0009] According to the above technical solution, preferably, the truss body includes an upper truss assembly, a lower truss assembly and a vertical connecting member, the lower truss assembly is fixedly connected to the base plate, the upper truss assembly is fixedly connected to the free end of the hanging mechanism, and the two ends of the vertical connecting member are respectively fixedly connected to the upper truss assembly and the lower truss assembly.

[0010] It can be seen that in the above technical solution, the truss body includes an upper truss assembly, a lower truss assembly and a vertical connecting member, and the two ends of the vertical connecting member are respectively fixedly connected to the upper truss assembly and the lower truss assembly, so that the double-layer structure of the truss body can increase the stability of the steel hanging box anti-collision body, thereby better resisting water pressure.

[0011] According to the above technical solution, preferably, the upper truss assembly and the lower truss assembly both include a main truss unit and a secondary truss unit fixedly connected horizontally and vertically, and the connection points of the main truss unit and the secondary truss unit are fixedly connected to the ends of the vertical connectors.

[0012] It can be seen that in the above technical solution, the upper truss assembly and the lower truss assembly both include a main truss unit and a secondary truss unit that are fixedly connected horizontally and vertically, thereby being able to better support the steel hanging box anti-collision body and enhance stability.

[0013] According to the above technical solution, preferably, the truss body is fixedly connected to the inner wall of the steel hanging box anti-collision body through a transition connection assembly, the two ends of the transition connection assembly have different heights, and the outer side height of the transition connection assembly is greater than the inner side height.

[0014] It can be seen that in the above technical solution, the transition connection assembly can effectively increase the welding area between the truss body and the steel hanging box anti-collision body, strengthen the end force of the truss body, and ensure the stability of the structure.

[0015] According to the above technical solution, preferably, the transition connection assembly includes a first connection unit and a second connection unit that are spliced ​​together, one end of the first connection unit is fixedly connected to the inner wall of the steel hanging box anti-collision body, the other end of the first connection unit is spliced ​​and locked with one end of the second connection unit, and the other end of the second connection unit is fixedly connected to the end of the truss body.

[0016] It can be seen that the above technical solution makes it easy for workers to adjust the transition connection components according to the actual size, thereby improving construction efficiency.

[0017] According to the above technical solution, preferably, the first connecting unit is provided with a strip-shaped through hole, and the second connecting unit is provided with a bolt fastener matched with the strip-shaped through hole.

[0018] It can be seen that in the above technical solution, it is convenient for the staff to use the bolt fasteners to quickly lock the first connecting unit and the second connecting unit.

[0019] According to the above technical solution, preferably, the transition connection assembly further includes a T-shaped connecting vertical rod, and both ends of the T-shaped connecting vertical rod are respectively fixedly connected to two vertically corresponding groups of transition connection assemblies.

[0020] It can be seen that in the above technical solution, the T-shaped connecting vertical rod is used to connect two vertically corresponding sets of transition connection components, and the flange of the T-shaped connecting vertical rod can effectively increase the stability of the connection and reduce the deformation and instability risks of the structure.

[0021] The beneficial effects of the utility model are:

[0022] (1) The bottom keel structure of the utility model is buried in the bridge foundation after pouring concrete as part of the steel skeleton, so that the bottom concrete in the cofferdam becomes steel concrete, strengthening the bottom concrete structure and increasing the safety of the cofferdam structure;

[0023] (2) The lower end of the truss body of the utility model is fixedly connected to the bottom plate, which not only effectively enhances the strength of the bottom plate, so that the bottom plate and the bottom keel mechanism jointly bear the vertical pressure of the bottom concrete, but also can reduce the height of the steel hanging box mechanism and the hanging mechanism, saving materials;

[0024] (3) The circumference of the truss body and the bottom plate of the utility model are fixedly connected to the inner wall of the steel box anti-collision body, which can increase the stability of the steel box anti-collision body, thereby better resisting water pressure and effectively enhancing the construction quality and structural safety of the steel box cofferdam. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The schematic diagram of the top view of the 1 / 4 steel hanging box cofferdam is shown;

[0026] Figure 2 Shows Figure 1 Schematic diagram of the cross-sectional structure in the AA direction;

[0027] Figure 3 A schematic diagram of the front view of the transition connection assembly is shown;

[0028] Figure 4 Shows Figure 3 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0029] Figure 5 A schematic diagram of the front view of the structure of the T-shaped connecting vertical rod is shown;

[0030] Description of reference numerals:

[0031] 1. Steel casing mechanism; 2. Steel hanging box mechanism; 3. Bottom keel mechanism; 4. Hanging mechanism; 5. Steel casing unit; 6. Steel hanging box anti-collision body; 7. Bottom plate; 8. Truss body; 9. Upper truss assembly; 10. Lower truss assembly; 11. Vertical connector; 12. Main truss unit; 13. Secondary truss unit; 14. Transition connection assembly; 15. First connection unit; 16. Second connection unit; 17. Bolt fasteners; 18. T-shaped connecting vertical rod. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and the best embodiment. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.

[0033] In the description of the utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0034] As shown in the figure, the present embodiment provides a truss bottom keel embedded steel hanging box cofferdam, including a steel casing mechanism 1, a steel hanging box mechanism 2, a bottom keel mechanism 3 and a hanging mechanism 4, wherein the steel casing mechanism 1 includes a plurality of groups of steel casing units 5 evenly arranged in the cofferdam, the steel hanging box mechanism 2 includes a steel hanging box anti-collision body 6, and the bottom keel mechanism 3 is embedded in the bridge foundation after pouring concrete as a part of the steel skeleton, further, the bottom keel mechanism 3 includes a bottom plate 7 and a truss body 8, the truss body 8 is a truss structure, the lower surface of the truss body 8 is fixedly connected to the bottom plate 7, the truss body 8 and the circumference of the bottom plate 7 are fixedly connected to the inner side wall of the lower part of the steel hanging box anti-collision body 6, and the truss body 8 includes an upper truss assembly 9, a lower truss assembly 1 0 and vertical connecting member 11, the lower truss assembly 10 is fixedly connected to the bottom plate 7, the upper truss assembly 9 is fixedly connected to the free end of the hanging mechanism 4, the two ends of the vertical connecting member 11 are fixedly connected to the upper truss assembly 9 and the lower truss assembly 10 respectively, the upper truss assembly 9 and the lower truss assembly 10 both include a main truss unit 12 and a secondary truss unit 13 fixedly connected horizontally and vertically, the connection point of the main truss unit 12 and the secondary truss unit 13 is fixedly connected to the end of the vertical connecting member 11, the double-layer structure of the truss body 8 can increase the stability of the steel hanging box anti-collision body 6, and thus better resist water pressure, the hanging mechanism 4 is arranged on the steel casing unit 5, and the hanging mechanism 4 is used to hoist the bottom keel mechanism 3 and the steel hanging box anti-collision body 6.

[0035] It can be seen that in the above technical scheme, the bottom keel mechanism 3 is buried in the bridge foundation after pouring concrete as part of the steel skeleton, so that the bottom concrete in the cofferdam becomes steel concrete, which can effectively strengthen the bottom concrete structure and increase the safety of the cofferdam structure; and the lower end of the truss body 8 is fixedly connected to the bottom plate 7, which not only effectively enhances the strength of the bottom plate 7, so that the bottom plate 7 and the bottom keel mechanism 3 jointly bear the vertical pressure of the bottom concrete, but also can reduce the height of the steel hanging box mechanism 2 and the hanging mechanism 4, saving materials; the truss body 8 and the bottom plate 7 are fixedly connected to the inner wall of the steel hanging box anti-collision body 6 around the circumference, which can increase the stability of the steel hanging box anti-collision body 6, and thus better resist water pressure, and effectively enhance the construction quality and structural safety of the steel hanging box cofferdam.

[0036] Furthermore, the truss body 8 is fixedly connected to the inner wall of the steel box anti-collision body 6 through a transition connection assembly 14. The two ends of the transition connection assembly 14 have different heights. The outer height of the transition connection assembly 14 is greater than the inner height. The transition connection assembly 14 can effectively increase the welding area between the truss body 8 and the steel box anti-collision body 6, strengthen the end force of the truss body 8, and ensure the stability of the structure.

[0037] Furthermore, the transition connection assembly 14 includes a first connection unit 15 and a second connection unit 16 that are spliced ​​together. One end of the first connection unit 15 is fixedly connected to the inner wall of the steel hanging box anti-collision body 6, and the other end of the first connection unit 15 is spliced ​​and locked with one end of the second connection unit 16. The other end of the second connection unit 16 is fixedly connected to the end of the truss body 8. The first connection unit 15 is provided with a strip through hole, and the second connection unit 16 is provided with a bolt fastener 17 that is compatible with the strip through hole. This makes it convenient for the staff to adjust the transition connection assembly 14 according to the actual size, and use the bolt fastener 17 to quickly lock the first connection unit 15 and the second connection unit 16 to improve the construction efficiency.

[0038] Furthermore, the transition connection assembly 14 also includes a T-shaped connecting vertical rod 18, both ends of which are fixedly connected to two vertically corresponding groups of transition connection assemblies 14, and the T-shaped connecting vertical rod 18 is used to connect the two vertically corresponding groups of transition connection assemblies 14, and the flange of the T-shaped connecting vertical rod 18 can effectively increase the stability of the connection and reduce the deformation and instability risks of the structure.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A truss bottom keel embedded steel hanging box cofferdam, characterized in that: It includes a steel casing mechanism, a steel hanging box mechanism, a bottom keel mechanism and a hanging mechanism. The steel casing mechanism includes a plurality of steel casing units evenly arranged in the cofferdam. The steel hanging box mechanism includes a steel hanging box anti-collision body. The bottom keel mechanism is buried in the bridge foundation after pouring concrete as a part of the steel skeleton. The bottom keel mechanism includes a bottom plate and a truss body. The truss body is a truss structure. The lower end of the truss body is fixedly connected to the bottom plate. The truss body and the bottom plate are fixedly connected to the inner side wall of the steel hanging box anti-collision body around. The hanging mechanism is arranged on the steel casing unit, and the hanging mechanism is used to hang the bottom keel mechanism and the steel hanging box anti-collision body.

2. The truss bottom keel embedded steel hanging box cofferdam according to claim 1 is characterized in that: The truss body includes an upper truss assembly, a lower truss assembly and a vertical connecting piece. The lower truss assembly is fixedly connected to the bottom plate, the upper truss assembly is fixedly connected to the free end of the hanging mechanism, and the two ends of the vertical connecting piece are respectively fixedly connected to the upper truss assembly and the lower truss assembly.

3. The truss bottom keel embedded steel hanging box cofferdam according to claim 2 is characterized in that: The upper truss assembly and the lower truss assembly both include a main truss unit and a secondary truss unit that are fixedly connected horizontally and vertically, and the connection points of the main truss unit and the secondary truss unit are fixedly connected to the ends of the vertical connectors.

4. The truss bottom keel embedded steel hanging box cofferdam according to claim 1 is characterized in that: The truss body is fixedly connected to the inner wall of the steel hanging box anti-collision body through a transition connection component. The two ends of the transition connection component have different heights, and the outer side height of the transition connection component is greater than the inner side height.

5. The truss bottom keel embedded steel hanging box cofferdam according to claim 4 is characterized in that: The transition connection assembly includes a first connection unit and a second connection unit that are spliced ​​together, one end of the first connection unit is fixedly connected to the inner wall of the steel hanging box anti-collision body, the other end of the first connection unit is spliced ​​and locked with one end of the second connection unit, and the other end of the second connection unit is fixedly connected to the end of the truss body.

6. The truss bottom keel embedded steel hanging box cofferdam according to claim 5 is characterized in that: The first connecting unit is provided with a strip-shaped through hole, and the second connecting unit is provided with a bolt fastener matched with the strip-shaped through hole.

7. The truss bottom keel embedded steel hanging box cofferdam according to claim 6 is characterized in that: The transition connection assembly also includes a T-shaped vertical connection rod, and both ends of the T-shaped vertical connection rod are respectively fixedly connected to two vertically corresponding groups of transition connection assemblies.

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