Bridge large cantilever flange plate reinforcing and supporting structure

Abstract

The utility model relates to a bridge large cantilever flange plate reinforcing and supporting structure which comprises a bridge body and a cantilever arranged on one side of the bridge body. A light-weight supporting mechanism used for supporting the cantilever is arranged between the bottom of the cantilever and one side of the bridge body, the L-shaped supporting frame and the inclined supporting inclined rod form a triangular stable system, when the cantilever bears a vertical load, the load is transmitted to the bridge body through the supporting frame, the supporting inclined rod provides horizontal resistance, the bending moment of the root of the cantilever is remarkably reduced, and the stability of the cantilever is improved. Due to the high strength of the aluminum alloy material and the filling of the foam core material, it is ensured that the structure has enough flexural rigidity on the premise of light weight, local buckling is avoided, the supporting inclined rods are inserted into the corresponding mounting grooves of the supporting frame for positioning through the upper mounting base and the lower mounting base, final fixing is completed through the limiting pieces, and when the mounting bolts are screwed into the limiting sleeves, the supporting inclined rods are fixed. The sleeve presses the mounting base to be tightly attached to the mounting groove to form rigid connection, welding is not needed through the design, the pre-tightening force of the bolt is adjustable, and different load requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge engineering technical field, concretely is a kind of bridge large cantilever flange plate reinforcing support structure. BACKGROUND

[0002] In bridge engineering, large cantilever flange plate is prone to the following problems due to long-term bearing of vehicle load, wind load and temperature stress: deflection deformation at cantilever end, crack at root, affecting bridge safety and durability, concrete increases section, long construction period, needs to close traffic, and new weight may exceed foundation bearing capacity, in prior art, pouring mold does not have the function of rapid cooling, after pouring is completed, it cannot be cooled quickly, so the castings cannot be taken out quickly, and the working efficiency of people is reduced

[0003] For example, the authorized patent document with application number CN202222268386.7 discloses a flexible widening bridge based on cantilever flange plate, which comprises a main cantilever flange plate, a widening cantilever flange plate arranged on the side of the main cantilever flange plate and separated therefrom, a connecting device connected between the main cantilever flange plate and the widening cantilever flange plate for forming a continuous construction surface on the upper surfaces of the main cantilever flange plate and the widening cantilever flange plate, a UHPC layer covering the main cantilever flange plate, the widening cantilever flange plate and the connecting device, and a bridge deck structure paved on the UHPC layer.

[0004] The above-mentioned patent also has the problems of cracks and deflection of large cantilever flange plate under long-term load, and the traditional reinforcing method (such as steel plate sticking) has the defects of increased self-weight and insufficient durability, so we need to provide a reinforcing support structure for large cantilever flange plate of bridge. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a reinforcing support structure for large cantilever flange plate of bridge, the support frame and the inclined rod are made of aluminum alloy and filled with foam core material, the overall weight is lighter than steel structure, the foam core material suppresses local buckling and improves bending stiffness, the L-shaped support frame and the inclined rod form a geometrically stable system, effectively dispersing the cantilever load, and the upper mounting seat and the lower mounting seat are inserted and matched with the mounting groove, and the installation bolt and the limiting sleeve are quickly locked, realizing modular installation and solving the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a reinforcing support structure for large cantilever flange plate of bridge, comprising:

[0007] Bridge body and cantilever arranged on one side of bridge body;

[0008] A light-weight support mechanism for supporting the cantilever is arranged between the bottom of the cantilever and one side of the bridge body, the light-weight support mechanism comprises a support frame arranged in an L shape at the bottom of the cantilever, and the bottom of the support frame is provided with a support inclined rod arranged in an inclined manner.

[0009] The support frame and the support inclined rod are connected through an assembly mechanism.

[0010] Preferably, grooves are formed in the interiors of the support frame and the support inclined rod, and the interiors of the grooves of the support frame and the support inclined rod are filled with foam core materials, the support frame is an aluminum alloy frame, and the support inclined rod is an aluminum alloy rod.

[0011] Preferably, the assembly mechanism comprises an upper mounting seat integrally processed at the top of the support inclined rod, one end of the top of the support frame is provided with an upper mounting groove matched with the upper mounting seat, the lower end of the support inclined rod is integrally provided with a lower mounting seat, and the bottom of the support frame is provided with a lower mounting groove for mounting the lower mounting seat, and the top and the bottom of the support inclined rod are both provided with limit pieces for fixedly mounting the support inclined rod in the support frame.

[0012] Preferably, the limit pieces comprise two mounting bolts slidingly mounted in the upper mounting seat and the lower mounting seat, the surface of the mounting bolt is threadedly mounted with a limit sleeve, one end of the limit sleeve is fixedly mounted on one side of the surface of the support frame, and the surface of the mounting bolt is movably sleeved with the interior of the support frame.

[0013] Preferably, the assembly mechanism further comprises a drainage mechanism, the drainage mechanism comprises a pipeline arranged between the support frame and the support inclined rod, and one side of the pipeline is fixedly mounted with an assembly frame, and one side of the assembly frame is fixedly mounted on the surface of the support frame through bolts.

[0014] Preferably, a protective layer is fixedly mounted on the top of the support inclined rod, the protective layer is arranged between the support inclined rod and the pipeline, a reinforcing corner seat is fixedly mounted at the right angle in the interior of the support frame, a water pipe is embedded in the interior of the cantilever, and the water outlet end of the bottom of the water pipe is located at the top of the pipeline.

[0015] Preferably, mounting flake plates are integrally processed on the two sides of the support frame, and the mounting flake plates are fixedly mounted on the bottom of the cantilever and the side surface of the bridge body through bolts.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model support frame and inclined rod adopt aluminum alloy and fill foam core material, the overall weight is lighter than steel structure, simultaneously, the foam core material restrains local buckling, promotes the bending stiffness, the L shaped support frame and the inclined inclined rod form the geometric stable system, effectively disperses the cantilever load, and through the plug -in cooperation of upper mounting seat, lower mounting seat and installation slot, cooperation installation bolt and limit sleeve quick locking, realizes the modular installation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure three-dimensional view of the utility model;

[0019] Figure 2 It is the drainage mechanism three-dimensional view of the utility model;

[0020] Figure 3 It is the assembly mechanism three-dimensional view of the utility model;

[0021] Figure 4 It is the limit piece three-dimensional view of the utility model.

[0022] In the drawing: 1, bridge body; 2, cantilever; 3, light weight support mechanism; 31, support frame; 32, support inclined rod; 4, assembly mechanism; 41, upper mounting seat; 42, upper installation slot; 43, lower mounting seat; 44, lower installation slot; 5, recess; 6, foam core material; 7, limit piece; 71, mounting bolt; 72, limit sleeve; 8, drainage mechanism; 81, pipeline; 82, assembly frame; 9, protective layer; 10, reinforcing corner seat; 11, water pipe; 12, mounting sheet plate. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0024] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a bridge large cantilever flange plate reinforcing support structure, comprising:

[0025] Bridge body 1 and the cantilever 2 of being set at the one side of bridge body 1;

[0026] The bottom of cantilever 2 and the one side between bridge body 1 are provided with light weight support mechanism 3 for supporting cantilever 2, and light weight support mechanism 3 includes the support frame 31 of being set at the bottom of cantilever 2 in L shape, and the bottom of support frame 31 is provided with the support inclined rod 32 of being inclinedly arranged;

[0027] The support frame 31 is connected with the support inclined rod 32 through the assembly mechanism 4;

[0028] Specifically, the L-shaped support frame 31 and the inclined support inclined rod 32 form a triangular stable structure, the vertical load of the cantilever 2 flange plate is transmitted to the bridge body 1 through the support frame 31, and the support inclined rod 32 provides horizontal resistance to reduce the bending moment at the root of the cantilever 2, wherein the material synergy effect: the foam core material 6 (such as polyurethane foam) not only reduces the weight, but also blocks the penetration of water vapor through the closed cell structure to protect the internal aluminum alloy structure, the detachability of the assembly mechanism 4 supports the later maintenance or partial replacement, and reduces the whole life cycle cost.

[0029] The support frame 31 and the support inclined rod 32 are internally provided with grooves 5, the support frame 31 and the support inclined rod 32 are internally filled with foam core material 6, the support frame 31 is provided as an aluminum alloy frame, and the support inclined rod 32 is provided as an aluminum alloy rod;

[0030] In the embodiment, the aluminum alloy has low density, is combined with the foam core material 6 filling, and the overall weight is reduced by more than 40% than the traditional steel structure, the additional load on the original structure of the bridge is reduced, the stiffness is enhanced: the foam core material 6 suppresses the local buckling of the aluminum alloy wall plate, and the bending and compression stability of the support structure is improved, the corrosion resistance: the aluminum alloy is naturally corrosion-resistant, is suitable for humid, salt fog and other harsh environments, and prolongs the service life, and the aluminum alloy support frame 31 and the inclined rod filled with the foam core material 6 significantly reduce the self-weight, avoiding the secondary load problem of the traditional steel structure.

[0031] The assembly mechanism 4 includes an upper mounting seat 41 integrally processed at the top of the support inclined rod 32, one end of the top of the support frame 31 is provided with an upper mounting groove 42 matched with the upper mounting seat 41, the lower end of the support inclined rod 32 is integrally provided with a lower mounting seat 43, and the bottom of the support frame 31 is provided with a lower mounting groove 44 for mounting the lower mounting seat 43, and the top and bottom of the support inclined rod 32 are provided with limit pieces 7, and the limit pieces 7 are used to fixedly install the support inclined rod 32 in the support frame 31;

[0032] Further, the upper mounting seat 41 at the top of the inclined rod is inserted into the upper mounting groove 42, and the lower mounting seat 43 at the bottom of the inclined rod is inserted into the lower mounting seat 43, and the limit pieces 7 are used to fix the inclined rod in the mounting frame, the upper / lower mounting seat 43 at the top and bottom of the support inclined rod 32 is respectively provided, and is inserted and matched with the upper / lower mounting groove 44 of the support frame 31, the modular plug-in design does not need to be welded, the on-site assembly efficiency is improved, the construction period is shortened, and when damaged, the limit pieces 7 only need to be loosened to replace the inclined rod or the support frame 31, and the maintenance cost is reduced.

[0033] The limiting piece 7 includes two mounting bolts 71 slidingly installed in the upper mounting seat 41 and the lower mounting seat 43, the surface of the mounting bolt 71 is threadedly installed with a limiting sleeve 72, one end of the limiting sleeve 72 is fixedly installed on one side of the surface of the support frame 31, and the surface of the mounting bolt 71 is movably sleeved with the inside of the support frame 31;

[0034] It should be noted that the mounting bolt 71 is fixed by the limiting piece 7 (the mounting bolt 71 + the limiting sleeve 72), penetrates the support frame 31, the upper mounting seat 41 and the lower mounting seat 43, and the locking mechanism of the mounting bolt 71 and the limiting sleeve 72 ensures the stability of the load transmission path and excellent anti-seismic performance.

[0035] It also includes a drainage mechanism 8, which includes a pipeline 81 arranged between the support frame 31 and the support inclined rod 32, one side of the pipeline 81 is fixedly installed with an assembly frame 82, and one side of the assembly frame 82 is fixedly installed on the surface of the support frame 31 through a bolt;

[0036] It is worth noting that the pipeline 81 is fixed on the surface of the support frame 31 through the assembly frame 82, the water outlet end of the embedded water pipe 11 in the cantilever 2 is aligned with the top of the pipeline 81, a protective layer 9 is arranged between the support inclined rod 32 and the pipeline 81, the accumulated water in the cantilever 2 is quickly discharged, and the accumulated water is prevented from eroding the aluminum alloy support structure, the pipeline 81 is designed in an integrated manner with the support frame 31, does not occupy extra space, and is beautiful and practical.

[0037] The top of the support inclined rod 32 is fixedly installed with the protective layer 9, the protective layer 9 is arranged between the support inclined rod 32 and the pipeline 81, a reinforcing corner seat 10 is fixedly installed at the right angle inside the support frame 31, the embedded water pipe 11 is arranged in the cantilever 2, and the water outlet end at the bottom of the water pipe 11 is located at the top of the pipeline 81;

[0038] The protective layer 9 is made of rubber material, which reduces the friction noise and wear of the pipeline 81 and the inclined rod, the sheet plate expands the connection contact surface, avoids local pressure damage to the concrete of the cantilever 2, and realizes uniform load transmission.

[0039] The two sides of the support frame 31 are integrally processed with mounting sheet plates 12, and the mounting sheet plates 12 are fixedly installed on the bottom of the cantilever 2 and the side surface of the bridge body 1 through bolts;

[0040] The reinforcing corner seat 10 is arranged at the right angle of the support frame 31, the mounting sheet plates 12 are arranged on the two sides of the support frame 31 and fixedly installed on the cantilever 2 and the bridge body 1 through bolts, the reinforcing corner seat 10 disperses the stress concentration at the right angle of the L-shaped support frame 31, prevents cracking, enhances the shear capacity, the mounting sheet plates 12 provide a standardized connection interface, and the bolt fixing mode is suitable for different bridge sizes and has a high construction fault tolerance.

[0041] The L-shaped support frame 31 and the inclined support inclined rod 32 constitute a triangular stable system, when the cantilever 2 bears vertical load, the load is transmitted to the bridge body 1 through the support frame 31, the support inclined rod 32 provides horizontal resistance, significantly reduces the bending moment at the root of the cantilever 2, the high strength of the aluminum alloy material and the filling of the foam core material 6 ensure that the structure has enough bending stiffness under the premise of light weight, avoid local buckling, the support inclined rod 32 is positioned by the upper / lower mounting seat 43 and the corresponding mounting slot of the support frame 31, the limiting piece 7 completes the final fixation, when the mounting bolt 71 is screwed into the limiting sleeve 72, the sleeve compresses the mounting seat and the mounting slot to tightly fit, forming a rigid connection. The design does not need welding, the construction efficiency is improved, and the bolt pre-tightening force is adjustable, which is suitable for different load requirements.

[0042] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A bridge large cantilever flange plate reinforcing support structure, characterized by, Include: Bridge body (1) and cantilever (2) arranged on one side of bridge body (1); The bottom of the cantilever (2) and the side of the bridge body (1) are provided with a lightweight support mechanism (3) for supporting the cantilever (2), the lightweight support mechanism (3) comprises a support frame (31) arranged at the bottom of the cantilever (2) in L shape, and the bottom of the support frame (31) is provided with a support inclined rod (32) arranged obliquely; The support frame (31) and the support inclined rod (32) are connected by a mounting mechanism (4).

2. The reinforced support structure for a large cantilevered flange plate of a bridge according to claim 1, characterized by: The support frame (31) and the support inclined rod (32) are internally provided with grooves (5), the grooves (5) in the support frame (31) and the support inclined rod (32) are filled with foam core material (6), the support frame (31) is arranged as an aluminum alloy frame, and the support inclined rod (32) is arranged as an aluminum alloy rod.

3. A bridge large cantilever flange plate reinforcing support structure according to claim 2, characterized in that: The mounting mechanism (4) comprises an upper mounting seat (41) integrally processed on the top of the support inclined rod (32), one end of the top of the support frame (31) is provided with an upper mounting groove (42) matched with the upper mounting seat (41), the lower end of the support inclined rod (32) is integrally provided with a lower mounting seat (43), and the bottom of the support frame (31) is provided with a lower mounting groove (44) for mounting the lower mounting seat (43), and the top and bottom of the support inclined rod (32) are provided with limit pieces (7), and the limit pieces (7) are used for fixedly mounting the support inclined rod (32) in the support frame (31).

4. The reinforced support structure for a large cantilevered flange plate of a bridge according to claim 3, characterized by: The limit pieces (7) comprise two mounting bolts (71) slidably mounted in the upper mounting seat (41) and the lower mounting seat (43), the surface of the mounting bolt (71) is threadedly mounted with a limiting sleeve (72), one end of the limiting sleeve (72) is fixedly mounted on one side of the surface of the support frame (31), and the surface of the mounting bolt (71) is movably sleeved with the inside of the support frame (31).

5. The reinforced support structure for a large cantilevered flange plate of a bridge according to claim 1, characterized by: It also includes a drainage mechanism (8), the drainage mechanism (8) comprises a pipeline (81) arranged between the support frame (31) and the support inclined rod (32), one side of the pipeline (81) is fixedly provided with an assembly frame (82), and one side of the assembly frame (82) is fixedly mounted on the surface of the support frame (31) through bolts.

6. A bridge large cantilever flange plate reinforcing support structure according to claim 5, characterized in that: The top of the support inclined rod (32) is fixedly provided with a protective layer (9), the protective layer (9) is arranged between the support inclined rod (32) and the pipeline (81), a reinforcing corner seat (10) is fixedly mounted in the right angle of the inside of the support frame (31), a water pipe (11) is embedded in the inside of the cantilever (2), and the water outlet end of the bottom of the water pipe (11) is located at the top of the pipeline (81).

7. The reinforced support structure for a large cantilevered flange plate of a bridge according to claim 1, characterized by: Both sides of the support frame (31) are integrally provided with mounting sheet plates (12), and the mounting sheet plates (12) are fixedly mounted on the bottom of the cantilever (2) and the side of the bridge body (1) through bolts.

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