Cantilever construction hanging bracket for steel-concrete composite beam concrete bridge deck slab

Abstract

The utility model provides a steel-concrete composite beam concrete bridge deck cantilever construction hanging bracket which comprises a supporting stand column, a cross beam, a formwork supporting frame and a connecting assembly, the cross beam is fixed to the top of the supporting stand column, and the formwork supporting frame is arranged at one end of the cross beam and located below the cross beam. The length direction of the formwork supporting frame is perpendicular to the cross beam. The connecting assembly is connected with the cross beam and the formwork supporting frame. Cantilever construction of a concrete bridge deck can be carried out, and a steel main beam can be prevented from rusting and corrosion after bridge construction is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction equipment, in particular to a cantilever construction hanger for a steel-concrete composite beam concrete bridge deck. Background Art

[0002] A steel-concrete composite beam is composed of a steel main beam and a concrete bridge deck installed on top of the steel main beam. Adjacent steel main beams are connected by cross-joints for reinforcement. During the construction of the steel-concrete composite beam, the steel main beam and the cross-joints are hoisted and erected, and the concrete bridge deck is cast in place. However, when constructing the concrete bridge deck of the outer side beam of the steel-concrete composite beam, since the outer side beam is a cantilever structure with no support underneath, it is necessary to install a bracket for supporting the formwork for concrete pouring to complete the construction of the concrete bridge deck of the outer side beam. In the prior art, the bracket is usually welded to the side of the steel main beam. After the concrete bridge deck of the outer side beam is poured, the bracket is cut off from the side of the steel main beam. However, welding the bracket to the side of the steel main beam will cause damage to the anti-corrosion layer on the side of the steel main beam. After the bridge construction is completed, the steel main beam is prone to rust and corrosion at the location where the anti-corrosion layer is damaged, reducing the service life of the bridge. Utility Model Content

[0003] The utility model aims to solve the above-mentioned technical problems and provides a cantilever construction hanger for a steel-concrete composite beam concrete bridge deck, which can carry out cantilever construction of the concrete bridge deck and can prevent the steel main beam from rusting and corroding after the bridge construction is completed.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0005] A cantilever construction hanger for a steel-concrete composite beam concrete bridge deck includes a supporting column, a crossbeam, a formwork support frame and a connecting assembly. The crossbeam is fixed to the top of the supporting column, the formwork support frame is arranged at one end of the crossbeam and is located below the crossbeam, and the length direction of the formwork support frame is perpendicular to the crossbeam; the connecting assembly connects the crossbeam and the formwork support frame.

[0006] Furthermore, the supporting column includes a first column and a second column, the top ends of the first column and the second column are welded and fixed to the bottom of the beam, the first column is arranged at the end of the beam away from the formwork support frame, and the second column is arranged between the first column and the formwork support frame.

[0007] Furthermore, the formwork support frame includes two bottom longitudinal beams and several bottom cross links, the two bottom longitudinal beams are arranged in parallel and spaced apart, and the bottom longitudinal beams are perpendicular to the cross beams; several bottom cross links are arranged in spaced apart along the length direction of the bottom longitudinal beams, and the opposite ends of each bottom cross link are respectively fixedly connected to the two bottom longitudinal beams; the connecting component connects the cross beam and the bottom longitudinal beam.

[0008] Furthermore, the connection assembly includes an upper anchor beam, a lower anchor beam and a hanger, the upper anchor beam is fixed on the cross beam, the lower anchor beam is fixed on the bottom longitudinal beam, and the hanger connects the upper anchor beam and the lower anchor beam.

[0009] Furthermore, the connecting assembly includes two upper anchor beams and a plurality of suspension rods, the two upper anchor beams are spaced apart along the length direction of the cross beam and are respectively arranged directly above the two bottom longitudinal beams; the plurality of suspension rods are divided into two groups, and the ends of the two groups of suspension rods away from the lower anchor beam are respectively connected to the two upper anchor beams.

[0010] Furthermore, the connecting assembly includes a plurality of lower anchor beams, and the plurality of lower anchor beams are divided into two groups. The two groups of lower anchor beams are respectively fixed to the bottom of the two bottom longitudinal beams. Each group of lower anchor beams includes a pair of lower anchor beams, and the pair of lower anchor beams are spaced apart along the length direction of the bottom longitudinal beams. The ends of the two groups of hangers away from the upper anchor beams are respectively connected to the two groups of lower anchor beams.

[0011] Furthermore, each group of the suspension rods includes two pairs of suspension rods, and the two pairs of suspension rods are arranged at intervals along the length direction of the bottom longitudinal beam, and each pair of suspension rods is respectively arranged on opposite sides of the corresponding bottom longitudinal beam.

[0012] Furthermore, the hanger includes threaded steel, a first locking nut and a second locking nut. The threaded steel is vertically arranged and passes through the corresponding upper anchor beam and the lower anchor beam. The first locking nut is threadedly connected to the top end of the threaded steel and rests against the top surface of the upper anchor beam. The second locking nut is threadedly connected to the top end of the threaded steel and rests against the bottom surface of the lower anchor beam.

[0013] Furthermore, the upper anchor beam and the lower anchor beam are both square box-shaped, the upper anchor beam is parallel to the bottom longitudinal beam, and the lower anchor beam is perpendicular to the bottom longitudinal beam.

[0014] Furthermore, the steel-concrete composite beam concrete bridge deck cantilever construction hanger includes a plurality of beams and a plurality of connecting components, the plurality of beams are spaced apart along the length direction of the formwork support frame, and the ends of the plurality of connecting components away from the formwork support frame are respectively connected to the plurality of beams.

[0015] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0016] 1. The above-mentioned steel-concrete composite beam concrete bridge deck cantilever construction hanger includes support columns, cross beams, formwork support frames and connection components. When the outer beam is being constructed, the support columns can be welded and fixed to the top surface of the steel main beam to complete the installation of the steel-concrete composite beam concrete bridge deck cantilever construction hanger. After that, the formwork is laid on the top surface of the formwork support frame, and the cantilever construction of the concrete bridge deck can be carried out. After the construction is completed, the support columns are cut off from the top surface of the steel main beam. The welding of the support columns to the top surface of the steel main beam will cause the anti-corrosion layer on the top surface of the steel main beam to be damaged. However, since the bridge construction will also pour concrete on the top surface of the steel main beam to construct the concrete panel of the rest of the steel-concrete composite beam, the concrete poured on the top surface of the steel main beam will completely cover the damaged part of the anti-corrosion layer on the top surface of the steel main beam, thereby preventing the steel main beam from rusting and corrosion after the bridge construction is completed.

[0017] 2. The above-mentioned steel-concrete composite beam concrete bridge deck cantilever construction hanger, the formwork support frame is composed of two bottom longitudinal beams and a bottom cross link connecting the two bottom longitudinal beams, which saves materials while ensuring the strength of the formwork support frame; the hanger includes threaded steel, a first locking nut and a second locking nut. Through the cooperation of the first locking nut, the second locking nut and the threaded steel, the hanger, the cross beam and the formwork support frame can be detachably connected, which is convenient for subsequent transportation and reuse of materials. The use of the hanger connection will not affect the laying of the formwork; the setting of the upper anchor beam and the lower anchor beam makes it possible to connect the hanger to the bottom longitudinal beam and the cross beam without destroying the structure of the bottom longitudinal beam and the cross beam, thereby ensuring the structural strength of the bottom longitudinal beam and the cross beam; hangers are connected to the opposite sides of each bottom longitudinal beam, which can further improve the stability of the structural connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a cantilever construction hanger for a steel-concrete composite beam concrete bridge deck according to a preferred embodiment of the present invention;

[0019] Figure 2 for Figure 1 A magnified view of the structure at point A;

[0020] Figure 3 for Figure 1 Schematic diagram of the use status of the cantilever construction hanger of the steel-concrete composite beam concrete bridge deck shown;

[0021] In the attached drawings, 100 is the cantilever construction hanger for the steel-concrete composite beam concrete bridge deck; 10 is the supporting column; 11 is the first column; 12 is the second column; 20 is the crossbeam; 30 is the formwork support frame; 31 is the bottom longitudinal beam; 33 is the bottom cross link; 40 is the connecting assembly; 41 is the upper anchor beam; 42 is the lower anchor beam; 43 is the hanger; 431 is the threaded steel bar; 432 is the first locking nut; 433 is the second locking nut; 200 is the steel main beam; 300 is the formwork. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please also see Figures 1 to 3 A preferred embodiment of the present invention provides a cantilever construction hanger 100 for a steel-concrete composite beam concrete bridge deck, comprising a support column 10, a crossbeam 20, a formwork support frame 30 and a connecting assembly 40. The crossbeam 20 is fixed to the top of the support column 10, the formwork support frame 30 is arranged at one end of the crossbeam 20 and is located below the crossbeam 20, and the length direction of the formwork support frame 30 is perpendicular to the crossbeam 20; the connecting assembly 40 connects the crossbeam 20 and the formwork support frame 30.

[0026] In this embodiment, the support columns 10 include a first column 11 and a second column 12, both of which are made of I-beams. The first column 11 and the second column 12 are spaced apart in the transverse direction of the bridge and are respectively used to be fixed to the top of two steel main beams 200 near the outer beam (not shown). The crossbeam 20 is parallel to the transverse direction of the bridge, and the bottom of the crossbeam 20 is fixedly connected to the top of the first column 11 and the top of the second column 12 by welding or other means, so that the first column 11 is located at the end of the crossbeam 20 away from the formwork support frame 30, and the second column 12 is located between the first column 11 and the formwork support frame 30. In this embodiment, the crossbeam 20 is made of two I-beams arranged side by side and fixed by welding. In this embodiment, the steel-concrete composite beam concrete bridge deck cantilever construction hanger 100 includes a plurality of crossbeams 20, which are spaced apart in the longitudinal direction of the bridge, and the bottom of each crossbeam 20 is fixedly connected to the support column 10.

[0027] The formwork support frame 30 comprises two bottom longitudinal beams 31 and several bottom cross-links 33. The two bottom longitudinal beams 31 are arranged parallel and spaced apart, perpendicular to the cross beams 20. In this embodiment, the bottom longitudinal beams 31 are parallel to the longitudinal direction of the bridge and are made of I-beams. Several bottom cross-links 33 are spaced apart along the length of the bottom longitudinal beams 31, perpendicular to the bottom longitudinal beams 31. The opposite ends of each bottom cross-link 33 are fixedly connected to the two bottom longitudinal beams 31. In this embodiment, the bottom cross-links 33 can be fixed to the bottom longitudinal beams 31 by welding or other means; the bottom cross-links 33 are made of I-beams.

[0028] The connecting assembly 40 connects the cross beam 20 and the bottom longitudinal beam 31. The connecting assembly 40 includes an upper anchor beam 41, a lower anchor beam 42 and a suspension rod 43. The upper anchor beam 41 is fixed to the cross beam 20, the lower anchor beam 42 is fixed to the bottom longitudinal beam 31, and the suspension rod 43 connects the upper anchor beam 41 and the lower anchor beam 42.

[0029] In this embodiment, there are two upper anchor beams 41, spaced apart along the length of the crossbeam 20 and positioned directly above the two bottom longitudinal beams 31. The upper anchor beams 41 are parallel to the bottom longitudinal beams 31 and are secured to the top surface of the crossbeam 20 by welding or other means. In this embodiment, the upper anchor beams 41 are square box structures formed by welding multiple steel plates.

[0030] In this embodiment, a plurality of connection assemblies 40 are provided corresponding to the crossbeams 20. One end of each connection assemblies 40 is connected to the formwork support frame 30, and the ends of each connection assemblies 40, away from the formwork support frame 30, are connected to upper anchor beams 41 on the crossbeams 20. The connection assemblies 40 include a plurality of lower anchor beams 42, which are divided into two groups. The two groups of lower anchor beams 42 are respectively fixed to the bottom of the two bottom longitudinal beams 31. Each group of lower anchor beams 42 includes a pair of lower anchor beams 42, spaced apart along the length of the bottom longitudinal beam 31. The lower anchor beams 42 are perpendicular to the bottom longitudinal beam 31 and are fixed to the bottom surface of the corresponding bottom longitudinal beam 31 by welding or other means. In this embodiment, the upper anchor beams 41 are square box structures welded from multiple steel plates.

[0031] In this embodiment, the connection assembly 40 includes a plurality of hangers 43, which are divided into two groups. One end of each group of hangers 43 is connected to the two upper anchor beams 41, and the ends of each group of hangers 43, which are away from the upper anchor beams 41, are connected to the two lower anchor beams 42. In this embodiment, each group of hangers 43 includes two pairs of hangers 43, which are spaced apart along the length of the bottom longitudinal beam 31, with each pair of hangers 43 being located on opposite sides of a corresponding bottom longitudinal beam 31. Each hanger 43 includes a threaded steel bar 431, a first locking nut 432 and a second locking nut 433. The threaded steel bar 431 is arranged vertically, and the threaded steel bar 431 passes through the corresponding upper anchor beam 41 and lower anchor beam 42. Specifically, the upper anchor beam 41 and the lower anchor beam 42 are provided with a vertically penetrating through-hole (not marked), and the threaded steel bar 431 passes through the corresponding through-holes on the upper anchor beam 41 and the lower anchor beam 42; the first locking nut 432 is threadedly connected to the top end of the threaded steel bar 431 and abuts against the top surface of the upper anchor beam 41, and the second locking nut 433 is threadedly connected to the top end of the threaded steel bar 431 and abuts against the bottom surface of the lower anchor beam 42.

[0032] When constructing the concrete bridge deck of the outer side beam, first, the cantilever construction hanger 100 of the steel-concrete composite beam concrete bridge deck is installed. Specifically, the first column 11 and the second column 12 are fixed to the top of the two steel main beams 200 close to the outer side beam by welding, and one end of the crossbeam 20 is extended to the outside of the steel main beam 200; the formwork support frame 30 is set below the end of the crossbeam 20 located on the outside of the steel main beam 200, and the upper anchor beam 41 and the lower anchor beam 42 are fixed through the hanger 43 assembly, so that the crossbeam 20 and the formwork support frame 30 are connected together. Next, a formwork 300 for pouring the concrete deck is laid on the top surface of the formwork support frame 30. Concrete is then poured onto the formwork 300 of the formwork support frame 30 to complete the pouring of the concrete deck of the outer beam. Finally, the cantilever construction hanger 100 for the steel-concrete composite beam concrete deck is removed. Specifically, the first locking nut 432 and the second locking nut 433 are removed from the threaded steel bar 431, and then the hanger 43 is removed from the upper anchor beam 41 and the lower anchor beam 42 to separate the crossbeam 20 from the formwork support frame 30. The support column 10 is then cut off from the top of the steel main beam 200 to complete the removal of the cantilever construction hanger 100 for the steel-concrete composite beam concrete deck. After the cantilever construction hanger 100 for the steel-concrete composite beam concrete deck is removed, concrete is poured onto the top surface of the steel main beam 200 to form the concrete deck of the remaining portion of the steel-concrete composite beam.

[0033] The cantilever construction hanger 100 for the steel-concrete composite beam concrete bridge deck comprises support columns 10, a crossbeam 20, a formwork support frame 30, and a connection assembly 40. During the construction of the outer side beam, the support columns 10 can be welded and fixed to the top surface of the steel main beam 200 to complete the installation of the cantilever construction hanger 100 for the steel-concrete composite beam concrete bridge deck. Formwork 300 is then laid on the top surface of the formwork support frame 30 to begin cantilever construction of the concrete bridge deck. After construction is complete, the support columns 10 are removed from the top surface of the steel main beam 200. The welding of the supporting column 10 and the top surface of the steel main beam 200 will cause the anti-corrosion layer on the top surface of the steel main beam 200 to be damaged. However, since the bridge construction will also pour concrete on the top surface of the steel main beam 200 to carry out the construction of the concrete panel of the rest of the steel-concrete composite beam, the concrete poured on the top surface of the steel main beam 200 will completely cover the damaged part of the anti-corrosion layer on the top surface of the steel main beam 200, thereby preventing the steel main beam 200 from rusting and corrosion after the bridge construction is completed.

[0034] The above-mentioned steel-concrete composite beam concrete bridge deck cantilever construction hanger 100, the formwork support frame 30 is composed of two bottom longitudinal beams 31 and a bottom cross link 33 connecting the two bottom longitudinal beams 31, which saves materials while ensuring the strength of the formwork support frame 30; the hanger 43 includes a threaded steel bar 431, a first locking nut 432 and a second locking nut 433. Through the cooperation of the first locking nut 432, the second locking nut 433 and the threaded steel bar 431, the hanger 43, the cross beam 20 and the formwork support frame 30 can be detachably connected, which is convenient for subsequent transportation and material reuse, and the use of the hanger 43 connection will not affect the laying of the formwork 300; the arrangement of the upper anchor beam 41 and the lower anchor beam 42 makes it possible to connect the hanger 43 to the bottom longitudinal beam 31 and the cross beam 20 without destroying the structure of the bottom longitudinal beam 31 and the cross beam 20, thereby ensuring the structural strength of the bottom longitudinal beam 31 and the cross beam 20; each bottom longitudinal beam 31 is connected to the hanger 43 on both opposite sides, which can further improve the stability of the structural connection.

[0035] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications made under the technical spirit suggested by the present invention should fall within the scope of the patent covered by the present invention.

Claims

1. A cantilever construction hanger for a steel-concrete composite beam concrete bridge deck, characterized by: It includes a supporting column, a beam, a formwork support frame and a connecting component. The beam is fixed to the top of the supporting column. The formwork support frame is arranged at one end of the beam and is located below the beam. The length direction of the formwork support frame is perpendicular to the beam. The connecting component connects the beam and the formwork support frame.

2. The cantilever construction hanger for the steel-concrete composite beam concrete bridge deck according to claim 1, characterized in that: The supporting columns include a first column and a second column. The top ends of the first column and the second column are welded and fixed to the bottom of the beam. The first column is arranged at an end of the beam away from the formwork support frame, and the second column is arranged between the first column and the formwork support frame.

3. The cantilever construction hanger for the steel-concrete composite beam concrete bridge deck according to claim 1, characterized in that: The formwork support frame includes two bottom longitudinal beams and several bottom cross links. The two bottom longitudinal beams are arranged in parallel and at intervals, and the bottom longitudinal beams are perpendicular to the cross links. The several bottom cross links are arranged at intervals along the length direction of the bottom longitudinal beams, and the opposite ends of each bottom cross link are respectively fixedly connected to the two bottom longitudinal beams. The connecting component connects the cross beam and the bottom longitudinal beam.

4. The cantilever construction hanger for the steel-concrete composite beam concrete bridge deck according to claim 3, characterized in that: The connection assembly includes an upper anchor beam, a lower anchor beam and a suspension rod. The upper anchor beam is fixed on the cross beam, the lower anchor beam is fixed on the bottom longitudinal beam, and the suspension rod connects the upper anchor beam and the lower anchor beam.

5. The cantilever construction hanger for the steel-concrete composite beam concrete bridge deck according to claim 4, characterized in that: The connecting assembly includes two upper anchor beams and a plurality of suspension rods. The two upper anchor beams are spaced apart along the length direction of the cross beam and are respectively arranged directly above the two bottom longitudinal beams. The plurality of suspension rods are divided into two groups. The ends of the two groups of suspension rods away from the lower anchor beam are respectively connected to the two upper anchor beams.

6. The cantilever construction hanger for the steel-concrete composite beam concrete bridge deck according to claim 5, characterized in that: The connecting assembly includes a plurality of lower anchor beams, and the plurality of lower anchor beams are divided into two groups. The two groups of lower anchor beams are respectively fixed to the bottom of the two bottom longitudinal beams. Each group of lower anchor beams includes a pair of lower anchor beams, and the pair of lower anchor beams are spaced apart along the length direction of the bottom longitudinal beam. The ends of the two groups of hangers away from the upper anchor beams are respectively connected to the two groups of lower anchor beams.

7. The cantilever construction hanger for the steel-concrete composite beam concrete bridge deck according to claim 6, characterized in that: Each group of the suspension rods includes two pairs of suspension rods, and the two pairs of suspension rods are arranged at intervals along the length direction of the bottom longitudinal beam, and each pair of suspension rods is respectively arranged on two opposite sides of the corresponding bottom longitudinal beam.

8. The cantilever construction hanger for a steel-concrete composite beam concrete bridge deck according to claim 4, characterized in that: The hanger includes threaded steel, a first locking nut and a second locking nut. The threaded steel is arranged vertically and passes through the corresponding upper anchor beam and the lower anchor beam. The first locking nut is threadedly connected to the top end of the threaded steel and rests on the top surface of the upper anchor beam. The second locking nut is threadedly connected to the top end of the threaded steel and rests on the bottom surface of the lower anchor beam.

9. The cantilever construction hanger for a steel-concrete composite beam concrete bridge deck according to claim 8, characterized in that: The upper anchor beam and the lower anchor beam are both in a square box shape. The upper anchor beam is parallel to the bottom longitudinal beam, and the lower anchor beam is perpendicular to the bottom longitudinal beam.

10. The cantilever construction hanger for a steel-concrete composite beam concrete bridge deck according to claim 1, characterized in that: The steel-concrete composite beam concrete bridge deck cantilever construction hanger includes a plurality of beams and a plurality of connecting components. The beams are arranged at intervals along the length direction of the formwork support frame. The bottom of each beam is fixedly connected to the supporting column. The ends of the connecting components away from the formwork support frame are respectively connected to the beams.

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