Bridge reinforcing structure

Abstract

The utility model discloses a bridge reinforcing structure which comprises a supporting piece and a limiting piece, the bridge reinforcing structure is located between adjacent bridge suspenders, the limiting piece is fixed to the lower side face of a bridge beam plate, a sunken limiting groove is formed in the lower end of the limiting piece, and the limiting groove is provided with an abutting space and a guiding space. The size of the guiding space is larger than that of the abutting space, a protruding matched limiting part is arranged on the side wall of the guiding space, the supporting piece is located in the abutting space and below the matched limiting part and the supporting piece, and the supporting piece is fixed to the two adjacent bridge suspenders through stay cables in a pulling mode so that the supporting piece can support a bridge beam plate through the limiting piece. The limiting groove guides installation of the supporting piece and limits the installation position, and the supporting piece is prevented from deviating or disengaging. The stay cables provide upward pulling force for the supporting pieces, the bridge beam plate is supported upwards through the limiting pieces, downward bending moment generated by the bridge beam plate is counteracted, reinforcing is more thorough, less space under the bridge is occupied, and reinforcing construction is facilitated.

Description

Technical Field

[0001] The utility model belongs to the field of bridge construction, and in particular relates to a bridge reinforcement structure. Background Art

[0002] The bridge beam is subjected to vertical loads, and the piers exert upward support on the bridge beam, which results in a downward bending moment between the two piers. After long-term operation, the bridge beam between adjacent piers will suffer from downward deflection. If it is not reinforced in time, it may cause problems such as uneven bridge deck and development of tensile cracks on the lower side of the bridge beam, thus affecting the service life of the bridge.

[0003] Some areas use methods such as adding outer toe of the bottom plate, increasing the thickness of the bridge beam, pasting steel strips and pasting carbon fiber cloth to strengthen and repair the bridge. This technology prevents the problem of downward deflection by enhancing the structural strength of the bridge beam. However, it cannot eliminate the bending moment generated by the bridge beam, and cannot fundamentally eliminate the problem of downward deflection of the bridge beam. In addition, the increased thickness of the bridge beam and the pasted steel strips will also generate downward tension on the bridge beam, increasing the downward bending moment generated by the bridge beam.

[0004] In some areas, bridge piers are added to the lower side of the bridge beam to increase the upward support force of the bridge beam, thereby reinforcing and repairing the bridge. In areas where bridges are built, they are generally cross-road and cross-rail bridges, and passage space is reserved between adjacent piers. The added piers will block the passage space and hinder normal passage; or, the bridge is across rivers, canyons and other areas, which is not convenient for the construction of new piers. Adding piers to strengthen and repair bridges is difficult and requires a lot of construction. Moreover, if the bridge beam has the problem of deflection again, the bridge beam needs to be lifted and reinforced again, which is not convenient for the long-term reinforcement and maintenance of the bridge. Utility Model Content

[0005] The utility model provides a bridge reinforcement structure to solve the problems that bridge reinforcement methods such as increasing the thickness of bridge beams and pasting steel strips cannot eliminate the bending moment generated by the bridge beams and result in incomplete reinforcement and maintenance effects, and the bridge reinforcement method of adding piers lacks working space, resulting in great construction difficulty and difficulties in long-term reinforcement and maintenance.

[0006] The technical solution adopted by the utility model is:

[0007] A bridge reinforcement structure includes a support member and a limit member, wherein the bridge reinforcement structure is located between adjacent bridge hangers, the limit member is fixed to the lower side of the bridge beam, and a recessed limit groove is provided at the lower end of the limit member, the limit groove has an abutment space and a guide space close to the bridge beam, the size of the guide space is larger than the size of the abutment space, and a raised matching limit portion is provided on the side wall of the guide space, the support member is located in the abutment space, the matching limit portion is below the support member, and the support member is tied and fixed to two adjacent bridge hangers through an inclined cable, so that the support member supports the bridge beam through the limit member.

[0008] The bridge reinforcement structure of the utility model also has the following additional technical features:

[0009] The limiting member has a fixed side facing the bridge beam slab, and the limiting member is provided with a leveling member on the fixed side for adjusting the gap between the limiting member and the lower surface of the bridge beam slab.

[0010] The leveling member is a leveling pad, the upper surface of the leveling pad matches the shape of the lower surface of the bridge beam, the lower surface of the leveling pad is fixed to the upper surface of the limiting member, and the limiting member is fixed to the lower surface of the bridge beam through the leveling pad.

[0011] The bridge reinforcement structure is located at the midpoint between adjacent bridge hangers, so that the horizontal force components generated by the inclined cables between the adjacent bridge hangers and the support members on the support members are equal.

[0012] An accommodating cavity is provided on the side wall of the guide space, and at least a part of the area of ​​the mating limiting portion is located in the accommodating cavity. The mating limiting portion has a rotating end located at the lower end, a supporting surface located at the upper end, and a driving surface gradually protruding toward the guide space in an upward direction. The mating limiting portion can rotate along the rotating end so that the mating limiting portion can be rotated in or out of the accommodating cavity.

[0013] The limiting member has fixed sections on both sides and a limiting section between the two fixed sections along the travel direction of the bridge, the limiting groove is located in the limiting section, the guiding space has a downward opening, and the supporting member can pass through the guiding space from bottom to top and enter the abutting space.

[0014] The limiting section is provided with a reinforcing rib extending in a vertical plane, and the reinforcing rib is provided with a raised reinforcing rib to resist the extrusion force generated by the support member and the bridge beam and slab on the limiting section.

[0015] The fixing section is provided with a fixing rib extending along the inclination direction of the inclined cable, and the lower surface of the fixing rib is provided with a transition arc surface arched upward in a direction away from the limiting section.

[0016] The support member extends along the width direction of the bridge, and the length of the support member is at least equal to the width of the bridge beam. The support member includes a supporting section for supporting the bridge beam and a cable-stayed section located at both ends of the supporting section. Both of the cable-stayed sections are fixed to adjacent bridge hangers by cable-stayed cables.

[0017] At least a portion of the upper surface of the diagonal section extends downwardly in a direction away from the supporting section, and the cross-sectional size of at least a portion of the supporting section gradually increases in a direction away from the bridge beam and slab. The supporting section is provided with a plurality of raised limiting protrusions, and a supporting portion is formed between adjacent limiting protrusions, and the supporting portion is located in the limiting groove.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0019] 1. In the utility model, the limiter is fixed to the lower side of the bridge beam, and a concave limiter groove is provided at the lower end of the limiter. The support member is located in the abutment space. First, the limiter is fixed to the bridge beam, and the support member is located in the abutment space. The limiter indicates the installation position of the support member, which is convenient for accurate installation of the support member. The limiter also limits the support position of the support member on the bridge beam, avoiding the position deviation of the support member under the oblique tension of the inclined cable, and improving the stability of the support member supporting the bridge beam. In addition, when installing the support member, it is only necessary to lift the support member, insert the support member into the limiter groove, and tighten the inclined cable to complete the installation of the support member, which is more convenient. Moreover, in the process of lifting the support member by applying force to the inclined cable, the guide space guides the running direction of the support member, can adjust the posture of the support member, and guide the support member to enter the abutment space to form a limit fixation. When the inclined cable becomes loose, the mating limiting portion can provide a certain support to the support member to prevent the support member from falling out of the limiting groove, which not only provides time for repairing the bridge reinforcement structure, but also requires only tightening or replacing the loose inclined cable to prevent the support member from falling out of the limiting groove and avoid the operation of lifting the support member again.

[0020] In addition, the support is tied and fixed with two adjacent bridge hangers through inclined cables, and the two adjacent bridge hangers can provide greater tension to the support, which increases the range of bridge types that can be reinforced by the bridge reinforcement structure, and the bridge reinforcement structure can lift and reinforce large-mass bridge beams such as large spans or large widths. The horizontal force generated by the two adjacent bridge hangers on the support can at least partially offset each other, reducing the horizontal force generated by the inclined cables on the support, reducing the horizontal thrust generated by the support on the limiter, and the shear force generated between the limiter and the bridge beam, thereby improving the stability of the support position of the bridge beam. Secondly, the weight of the support is applied to the bridge hanger through the inclined cables, avoiding the downward pulling force of the support on the bridge beam, and reducing the possibility of the bridge beam being deformed downward again. The bridge reinforcement structure can avoid the space between the adjacent bridge hangers under the bridge beam, which is convenient for setting a passage under the bridge beam, or for laying out a construction platform. After the bridge is repaired and reinforced, if the bridge beam and slab deflect downward again, the bridge reinforcement structure can be used to reinforce the bridge again simply by increasing the cable force of the inclined cable, thereby facilitating long-term operation and maintenance of the bridge.

[0021] 2. As a preferred embodiment of the present invention, the position limiter has a fixed side facing the bridge beam, and the position limiter is provided with a leveling member on the fixed side for adjusting the gap between the position limiter and the lower surface of the bridge beam. The leveling member is designed and manufactured separately according to the shape of the lower surface of the bridge beam, and the body of the position limiter is fixed to the leveling member to form the position limiter. The body of the position limiter can be designed and manufactured universally, which improves the applicability of the body and reduces the operation of independently designing and manufacturing all parts of the position limiter. The leveling member adjusts the gap between the position limiter and the lower surface of the bridge beam, improves the stability of the fixation between the position limiter and the bridge beam, increases the shear force that the position limiter and the bridge beam can withstand, avoids the position displacement of the position limiter under the action of the horizontal thrust of the support member, and improves the stability of the support.

[0022] 3. As a preferred embodiment of the present invention, the bridge reinforcement structure is located at the midpoint between adjacent bridge hangers, so that the horizontal force components generated by the inclined cables between adjacent bridge hangers and the support members on the support members are equal. The piers where the bridge hangers are located support the bridge beam slab. When the bridge beam slab is deformed downward, the position with the largest deformation is generally located in the middle position between the adjacent bridge hangers. The bridge reinforcement directly supports and reinforces the position of the bridge beam slab with the most serious deformation, thereby improving the convenience and effectiveness of the support reinforcement. The horizontal force components generated by the inclined cables between the adjacent bridge hangers and the support members on the support members are equal to offset each other. The resultant force generated by the inclined cables on the support members is vertically upward. The support members do not generate horizontal thrust on the limit members. No shear force is generated between the limit members and the bridge beam slab, but only a mutually directed extrusion force exists, thereby avoiding the horizontal relative sliding between the limit members and the bridge beam slab, thereby improving the stability of the support members supporting the bridge beam slab position. In addition, whether during the lifting process of the support member or after the support member is fixed, the tension of the multiple inclined cables on the support member is equal, which facilitates the control of the cable force of the inclined cables without the need for classified application or multiple transformations of the cable force, thereby improving the convenience of controlling the support member through the inclined cables.

[0023] 4. As a preferred embodiment of the utility model, the fixed section is provided with a fixed rib extending along the inclined direction of the inclined cable, and the lower surface of the fixed rib is provided with a transition arc surface arched upward in the direction away from the limiting section. The inclined extending fixed rib can support the inclined tension of the inclined cable on the support member, improve the limit of the inclined tension that the support member can withstand, and reduce the extrusion deformation of the limiting member caused by the extrusion force between the support member and the bridge beam. The fixed rib extends along the inclined direction of the inclined cable, and the reinforcing rib of the limiting section extends in a vertical plane. The plane extension directions of the fixed rib and the reinforcing rib are different, forming a support structure that is approximately triangular, which further enhances the limiting effect of the limiting member on the support member. In addition, the lower surface of the fixed rib is provided with a transition arc surface arched upward in the direction away from the limiting section, avoiding the angle transition set on the fixed section and avoiding the structural damage caused by the concentration of stress at the angle position during the extrusion process of the fixed section. The transition arc surface forms an arch structure, and the force acting on the arch structure in the arching direction is evenly diffused to the bridge deck through the arch structure, thereby increasing the extrusion force that the fixed section can withstand.

[0024] 5. As a preferred embodiment of the present invention, at least part of the upper surface of the diagonal section extends downwardly in a direction away from the supporting section. Rainwater or clean water for the bridge often flows from both sides of the bridge beam to the diagonal section. The design of the upper surface extending downwardly in a downwardly inclining manner can make the water flow and drip downward along the inclined surface without accumulating at the position of the diagonal section, thereby reducing the corrosion damage to the diagonal section and the diagonal cable. The cross-sectional dimensions of at least part of the supporting section gradually increase in a direction away from the bridge beam, and the dimension of the supporting section facing the bridge beam is small, which is convenient for relative positioning of the supporting member and the limiting groove, and for the supporting member to penetrate into the guiding space from bottom to top. When the guiding space guides the supporting section, the side wall of the guiding space can generate a horizontal thrust on the inclined surface of the supporting section, pushing the supporting section to slide into the abutting space. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0026] Figure 1 A schematic diagram of a bridge structure reinforced by using the bridge reinforcement structure according to an implementation mode of the utility model;

[0027] Figure 2 A side view of the position limiting member in one embodiment of the utility model;

[0028] Figure 3 A partial cross-sectional view of the position-limiting member in one embodiment of the utility model;

[0029] Figure 4 This is a schematic structural diagram of the support member in one embodiment of the utility model;

[0030] Figure 5 It is a top view of the structure of the limiting member and the supporting member in one implementation manner of the utility model.

[0031] in:

[0032] 1 bridge; 11 bridge suspender; 12 bridge beam; 13 inclined cable;

[0033] 2 limiting member; 21 limiting groove; 211 abutting space; 212 guiding space; 213 matching limiting portion; 2131 rotating end; 2132 supporting surface; 2133 driving surface; 214 accommodating cavity; 22 leveling member; 23 fixing section; 231 fixing rib; 232 transition arc surface; 24 limiting section;

[0034] 3 support member; 31 support section; 32 inclined section; 33 limiting protrusion; 34 support part. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0037] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0040] like Figures 1 to 3As shown, a bridge reinforcement structure includes a support member 3 and a limit member 2, wherein the bridge reinforcement structure is located between adjacent bridge hangers 11, the limit member 2 is fixed to the lower side of the bridge beam slab 12, and a recessed limit groove 21 is provided at the lower end of the limit member 2, wherein the limit groove 21 has an abutment space 211 and a guide space 212 close to the bridge beam slab 12, the size of the guide space 212 is larger than the size of the abutment space 211, and a raised matching limit portion 213 is provided on the side wall of the guide space 212, the support member 3 is located in the abutment space 211, and the matching limit portion 213 is below the support member 3, and the support member 3 is tied and fixed to the two adjacent bridge hangers 11 through the inclined cable 13, so that the support member 3 supports the bridge beam slab 12 through the limit member 2.

[0041] It should be noted that the bridge reinforcement structure described in the utility model is suitable for the maintenance and reinforcement of a beam bridge type bridge 1, a beam bridge, that is, a bridge beam 12 supported on a pier, the bridge beam 12 is subjected to a vertical load, the pier generates an upward support force on the bridge beam 12, and the bridge beam 12 generates a downward bending moment in at least a part of the area. And the bridge reinforcement structure is more suitable for the reinforcement and treatment of the downward deflection deformation disease of the bridge beam 12.

[0042] The bridge beam 12 between the adjacent bridge hangers 11 may be deformed after long-term operation. The bridge reinforcement structure is located between the adjacent bridge hangers 11, directly acting on the deflected part of the bridge beam 12, and can more effectively lift the deflected bridge beam 12, so that the bridge beam 12 can return to a straight state, reduce the generation of tensile cracks on the lower side of the bridge beam 12, and improve the operating life of the bridge.

[0043] When reinforcing the bridge 1, firstly, the support position of the support member 3 is determined according to the deflection deformation of the bridge beam slab 12, and the reinforcement personnel fix the limiter 2 at the support position; then the adjacent bridge hanger 11 and the support member 3 are tied together through the inclined cable 13, the tension of multiple inclined cables 13 is adjusted, and the inclined cable 13 is pulled upward to pull the support member 3 upward, and the posture of the support member 3 is adjusted by adjusting the cable force of different inclined cables 13, and the inclined cable 13 is loosened to pass through the guide space 212 from bottom to top and enter the abutment space 211. The cable force of the inclined cable 13 is continued to increase, so that the support member 3 supports the bridge beam slab 12 through the limiter 2, and the deflection deformation of the bridge beam slab 12 is reduced.

[0044] The limiter 2 is fixed to the lower side of the bridge beam 12, and a concave limiter groove 21 is provided at the lower end of the limiter 2. The support member 3 is located in the abutment space 211. First, the limiter 2 is fixed to the bridge beam 12, and the support member 3 is located in the abutment space 211. The limiter 2 indicates the installation position of the support member 3, which is convenient for the accurate installation of the support member 3. The limiter 2 also limits the support position of the support member 3 on the bridge beam 12, avoiding the position deviation of the support member 3 under the oblique tension of the inclined cable 13, and improving the stability of the support member 3 on the bridge beam 12. Secondly, compared with the support member 3, the volume and mass of the limiter 2 are generally smaller. When the bridge reinforcement construction is carried out, it is convenient for the construction personnel to lift and fix the limiter 2, and it is more convenient to position and install the limiter 2, which improves the convenience and accuracy of positioning and installation. In addition, when installing the support member 3, it is only necessary to lift the support member 3, insert the support member 3 into the limiting groove 21, and tighten the inclined cable 13 to complete the installation of the support member 3, and the construction method is more convenient. Moreover, in the process of lifting the support member 3 by applying force to the inclined cable 13, the guide space 212 guides the running direction of the support member 3, can adjust the posture of the support member 3, and guide the support member 3 to enter the abutment space 211 to form a limiting fixation, and when the inclined cable 13 becomes loose, the matching limiting portion 213 can form a certain supporting effect on the support member 3 to prevent the support member 3 from falling out of the limiting groove 21, which not only provides time for repairing the bridge reinforcement structure, but also only needs to tighten or replace the loose inclined cable 13 during repair to prevent the support member 3 from falling out of the limiting groove 21 to avoid the operation of lifting the support member 3 again.

[0045] In addition, the support member 3 is tied and fixed to the two adjacent bridge hangers 11 through the inclined cable 13. The two adjacent bridge hangers 11 can provide greater tension to the support member 3, which increases the range of bridge types that can be reinforced by the bridge reinforcement structure. The bridge reinforcement structure can lift and reinforce the bridge beam slab 12 with large mass such as large span or large width. The horizontal force generated by the two adjacent bridge hangers 11 on the support member 3 can at least partially offset, reducing the horizontal force generated by the inclined cable 13 on the support member 3, reducing the horizontal thrust generated by the support member 3 on the limiter 2, and the shear force generated between the limiter 2 and the bridge beam slab 12, thereby improving the stability of the support position of the bridge beam slab 12 by the support member 3. Secondly, the weight of the support member 3 is applied to the bridge hanger 11 through the inclined cable 13, avoiding the downward pulling force of the support member 3 on the bridge beam slab 12, and reducing the possibility of the bridge beam slab 12 bending and deforming again. The bridge reinforcement structure can avoid the space between adjacent bridge hangers 11 under the bridge beam 12, so as to facilitate the setting of a passageway under the bridge beam 12 or the layout of a construction platform. After the bridge is repaired and reinforced, if the bridge beam 12 deflects downward again, the bridge reinforcement structure can reinforce the bridge 1 again by simply increasing the cable force of the inclined cable 13, thereby facilitating the long-term operation and maintenance of the bridge 1.

[0046] As a preferred embodiment of the present invention, Figure 2 As shown, the stopper 2 has a fixed side facing the bridge beam 12, and the stopper 2 is provided with a leveling member 22 on the fixed side for adjusting the gap between the stopper 2 and the lower surface of the bridge beam 12. The leveling member 22 is designed and manufactured separately according to the shape of the lower surface of the bridge beam 12, and the body of the stopper 2 is fixed to the leveling member 22 to form the stopper 2. The body of the stopper 2 can be designed and manufactured universally, which improves the applicability of the body and reduces the operation of independently designing and manufacturing all parts of the stopper 2. The leveling member 22 adjusts the gap between the stopper 2 and the lower surface of the bridge beam 12, improves the stability of the fixation between the stopper 2 and the bridge beam 12, increases the shear force that the stopper 2 and the bridge beam 12 can withstand, avoids the position of the stopper 2 being offset by the horizontal thrust of the support member 3, and improves the stability of the support.

[0047] Preferably, the leveling member 22 is a leveling pad, the upper surface of which matches the shape of the lower surface of the bridge beam 12, the lower surface of which is fixed to the upper surface of the stopper 2, and the stopper 2 is fixed to the lower surface of the bridge beam 12 through the leveling pad. The gap is adjusted by the leveling pad to reduce the thickness of the leveling pad, thereby avoiding tensile deformation caused by the shear force on the upper and lower surfaces of the leveling pad. The upper surface of the leveling pad is designed and manufactured according to the shape of the lower surface of the supporting point of the bridge beam 12, and is more matched with the shape of the bridge beam 12. The upper surface of the stopper 2 is fixed to the lower surface of the leveling pad, and the upper surface of the stopper 2 and the lower surface of the leveling pad can be a planar structure, or the upper surface of the stopper 2 and the lower surface of the leveling pad are mutually adapted uneven surfaces to increase the friction between the stopper 2 and the leveling pad. Preferably, the upper surface of the stopper 2 is connected to the lower surface of the leveling pad by welding. At least the leveling pad is provided with a through hole, and a steel bar connector passes through the through hole to fix the stopper 2 to the bridge beam slab 12.

[0048] like Figure 1 As shown, the bridge reinforcement structure is located at the midpoint between adjacent bridge hangers 11, so that the horizontal force generated by the inclined cables 13 between adjacent bridge hangers 11 and the support member 3 on the support member 3 is equal. The pier where the bridge hangers 11 are located supports the bridge beam 12. When the bridge beam 12 is deformed downward, the position with the largest deformation is generally located in the middle position between the adjacent bridge hangers 11. The bridge reinforcement directly supports and reinforces the position of the bridge beam 12 with the most serious deformation, thereby improving the convenience and effectiveness of the support reinforcement. The horizontal force components generated by the inclined cables 13 between the adjacent bridge hangers 11 and the support members 3 on the support members 3 are equal to offset each other, and the resultant force generated by the inclined cables 13 on the support members 3 is vertically upward, and the support member 3 does not generate a horizontal thrust on the limit member 2. No shear force is generated between the limit member 2 and the bridge beam slab 12, but only a mutually directed squeezing force exists, thereby avoiding the horizontal relative sliding between the limit member 2 and the bridge beam slab 12, and improving the stability of the support member 3 supporting the position of the bridge beam slab 12. In addition, whether during the lifting process of the support member 3 or after the support member 3 is fixed, the tension of the multiple inclined cables 13 on the support member 3 is equal, which facilitates the control of the cable force of the inclined cables 13 without the need for classified application of the cable force or multiple transformations, thereby improving the convenience of controlling the support member 3 through the inclined cables 13.

[0049] As a preferred embodiment of the present invention, Figure 3As shown, a receiving cavity 214 is provided on the side wall of the guide space 212, and at least a part of the matching limiting portion 213 is located in the receiving cavity 214. The matching limiting portion 213 has a rotating end 2131 located at the lower end, a supporting surface 2132 located at the upper end, and a driving surface 2133 gradually protruding toward the guide space 212 in an upward direction. The matching limiting portion 213 can rotate along the rotating end 2131 so that the matching limiting portion 213 can be rotated in or out of the receiving cavity 214. When the support member 3 passes through the guide space 212 from bottom to top, the support member 3 presses the driving surface 2133 and pushes the matching limiting portion 213 to rotate along the rotating end 2131 into the receiving cavity 214, so that the matching limiting portion 213 and the support member 3 form a avoidance, which facilitates the lifting of the support member 3 into the abutment space 211. After the support member 3 passes through the guide space 212 and enters the abutment space 211 , the matching limiting portion 213 can rotate along the rotating end 2131 to rotate out of the accommodating cavity 214 , and the supporting surface 2132 can prevent the support member 3 from escaping from the limiting groove 21 .

[0050] It should be noted that after the support member 3 is tied and fixed, the bearing surface 2132 may abut against the support member 3, or there may be a certain gap between the bearing surface 2132 and the support member 3. In addition, after the support member 3 is tied and fixed, the bearing surface 2132 does not generate a supporting force on the support member 3, so that the gravity of the support member 3 is completely borne by the bridge hanger 11 through the inclined cable 13, reducing the downward force on the bridge beam slab 12 and aggravating the deflection problem.

[0051] Of course, in addition to using the rotating matching structure of the matching limiting portion 213 in the present invention, the matching limiting portion 213 can also be welded to the side wall of the guide space 212 after the support member 3 enters the abutment space 211 and is tied and fixed. The present invention does not limit this.

[0052] As a preferred embodiment of the present invention, Figure 2As shown, the limiting member 2 has fixed sections 23 on both sides and a limiting section 24 between the two fixed sections 23 along the travel direction of the bridge, the limiting groove 21 is located in the limiting section 24, and the guide space 212 has a downward opening. During the upward pulling process, the support member 3 can pass through the guide space 212 from bottom to top and enter the abutment space 211, and be pulled up in a straight line without changing the moving direction, which is convenient for the installation operation of the support member 3 through the inclined cable 13. The fixed sections 23 on both sides support the limiting section 24, reduce the extrusion deformation of the limiting section 24 or the deformation and damage caused by the oblique pulling force on the side wall of the limiting groove 21, improve the limiting effect of the limiting member 2 on the support member 3, and improve the supporting stability of the support member 3. The fixing section 23 also increases the area of ​​the acting force between the limiting member 2 and the bridge beam slab 12 , reduces the pressure between the limiting member 2 and the bridge beam slab 12 , and prevents the bridge beam slab 12 from being damaged by fracturing.

[0053] Preferably, the limiting section 24 is provided with a reinforcing rib extending in a vertical plane, and the reinforcing rib is provided with a raised reinforcing rib to resist the extrusion pressure exerted on the limiting section 24 by the supporting member 3 and the bridge beam slab 12. The limiting section 24 is located between the supporting member 3 and the bridge beam slab 12, and is mainly subjected to the extrusion pressure exerted on it by the supporting member 3 and the bridge beam slab 12. The reinforcing rib extends in a vertical plane, which is consistent with the direction of the extrusion pressure, so as to avoid bending of the reinforcing rib due to the force exerted along the thickness direction, and improve the limit of the extrusion pressure that the reinforcing rib can withstand. The raised reinforcing rib has a structural reinforcement effect on the reinforcing rib, which can further reduce the deformation of the reinforcing rib under the extrusion pressure, and further improve the bearing capacity of the limiting member 2.

[0054] Preferably, Figure 2As shown, the fixed section 23 is provided with a fixed rib 231 extending along the inclined direction of the inclined cable 13, and the lower surface of the fixed rib 231 is provided with a transition arc surface 232 arched upward in the direction away from the limiting section 24. The inclined extending fixed rib 231 can support the inclined tension of the inclined cable 13 on the support member 3, improve the limit of the inclined tension that the support member 3 can withstand, and reduce the extrusion deformation of the limiting member 2 caused by the extrusion force between the support member 3 and the bridge beam 12. The fixed rib 231 extends along the inclined direction of the inclined cable 13, and the reinforcing rib of the limiting section 24 extends in a vertical plane. The plane extension direction of the fixed rib 231 is different from that of the reinforcing rib, forming an approximately triangular support structure, which further enhances the limiting effect of the limiting member 2 on the support member 3. In addition, the lower surface of the fixed rib 231 is provided with a transition arc surface 232 that arches upward in a direction away from the limiting section 24, thereby avoiding the angle transition set on the fixed section 23 and avoiding structural damage caused by the concentration of stress at the angle position during the extrusion process of the fixed section 23. The transition arc surface 232 forms an arch structure, and the force acting on the arch structure in the arching direction is evenly diffused through the arch structure, thereby increasing the extrusion force that the fixed section 23 can withstand.

[0055] As a preferred embodiment of the present invention, Figure 5 As shown, the support member 3 extends along the width direction of the bridge, and the length of the support member 3 is at least equal to the width of the bridge beam 12. The support member 3 includes a support section 31 for supporting the bridge beam 12 and a diagonal section 32 located at both ends of the support section 31. The two diagonal sections 32 are tied and fixed to the adjacent bridge hanger 11 through the diagonal cable 13. The bridge hanger 11 is tied and fixed to the diagonal sections 32 at both ends of the support member 3 through the diagonal cable 13, which makes the tie and fixation of the support member 3 more stable, avoiding the imbalance problem of the support member 3 when the tie and fixation points are close. The diagonal sections 32 are located on both sides of the width direction of the bridge beam 12, and the diagonal cables 13 are connected to the support member 3 through both sides of the bridge beam 12, which facilitates the arrangement of the diagonal cables 13 and avoids the restriction of the diagonal cables 13 on the driving area located in the middle of the bridge beam 12.

[0056] Preferably, Figure 4 and Figure 5As shown, at least part of the upper surface of the inclined section 32 extends downwardly in a direction away from the support section 31, and the cross-sectional size of at least part of the upper surface of the support section 31 gradually increases in a direction away from the bridge beam 12. The support section 31 is provided with a plurality of raised limiting protrusions 33, and a support portion 34 is formed between adjacent limiting protrusions 33, and the support portion 34 is located in the limiting groove 21. Rainwater or clean water for the bridge often pours from both sides of the bridge beam 12 to the inclined section 32. The design of the upper surface extending downward in an inclined manner can make the water flow and drip downward along the inclined surface, and will not accumulate at the position of the inclined section 32, thereby reducing the corrosion damage to the inclined section 32 and the inclined cable 13. The size of the support section 31 facing the bridge beam 12 is small, which is convenient for the relative positioning of the support member 3 and the limiting groove 21, and convenient for the support member 3 to penetrate into the guide space 212 from bottom to top. When the guide space 212 guides the support section 31, the side wall of the guide space 212 can generate a horizontal thrust on the inclined surface of the support section 31, pushing the support section 31 to slide into the abutment space 211. The limiting protrusion 33 can not only enhance the structural strength of the support member 3 and reduce the bending deformation of the support member 3, but also form a structural interference with the groove body of the limiting groove 21, thereby preventing the support portion 34 from sliding horizontally relative to the limiting groove 21 and sliding out of the limiting groove 21.

[0057] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0058] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0059] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A bridge reinforcement structure, comprising a support member and a limit member, characterized in that: The bridge reinforcement structure is located between adjacent bridge hangers, the limit member is fixed to the lower side of the bridge beam, a recessed limit groove is provided at the lower end of the limit member, the limit groove has an abutment space and a guide space close to the bridge beam, the size of the guide space is larger than the size of the abutment space, a raised matching limit portion is provided on the side wall of the guide space, the support member is located in the abutment space, the matching limit portion is below the support member, the support member is tied and fixed to the two adjacent bridge hangers through an inclined cable, so that the support member supports the bridge beam through the limit member.

2. The bridge reinforcement structure according to claim 1, characterized in that: The limiting member has a fixed side facing the bridge beam slab, and the limiting member is provided with a leveling member on the fixed side for adjusting the gap between the limiting member and the lower surface of the bridge beam slab.

3. The bridge reinforcement structure according to claim 2, characterized in that: The leveling member is a leveling pad, the upper surface of the leveling pad matches the shape of the lower surface of the bridge beam, the lower surface of the leveling pad is fixed to the upper surface of the limiting member, and the limiting member is fixed to the lower surface of the bridge beam through the leveling pad.

4. The bridge reinforcement structure according to claim 1, characterized in that: The bridge reinforcement structure is located at the midpoint between adjacent bridge hangers, so that the horizontal force components generated by the inclined cables between the adjacent bridge hangers and the support members on the support members are equal.

5. The bridge reinforcement structure according to claim 1, characterized in that: An accommodating cavity is provided on the side wall of the guide space, and at least a part of the area of ​​the mating limiting portion is located in the accommodating cavity. The mating limiting portion has a rotating end located at the lower end, a supporting surface located at the upper end, and a driving surface gradually protruding toward the guide space in an upward direction. The mating limiting portion can rotate along the rotating end so that the mating limiting portion can be rotated in or out of the accommodating cavity.

6. The bridge reinforcement structure according to claim 1, characterized in that: The limiting member has fixed sections on both sides and a limiting section between the two fixed sections along the travel direction of the bridge, the limiting groove is located in the limiting section, the guiding space has a downward opening, and the supporting member can pass through the guiding space from bottom to top and enter the abutting space.

7. The bridge reinforcement structure according to claim 6, characterized in that: The limiting section is provided with a reinforcing rib extending in a vertical plane, and the reinforcing rib is provided with a raised reinforcing rib to resist the extrusion force generated by the support member and the bridge beam and slab on the limiting section.

8. The bridge reinforcement structure according to claim 6, characterized in that: The fixing section is provided with a fixing rib extending along the inclination direction of the inclined cable, and the lower surface of the fixing rib is provided with a transition arc surface arched upward in a direction away from the limiting section.

9. The bridge reinforcement structure according to claim 1, characterized in that: The support member extends along the width direction of the bridge, and the length of the support member is at least equal to the width of the bridge beam. The support member includes a supporting section for supporting the bridge beam and a cable-stayed section located at both ends of the supporting section. Both of the cable-stayed sections are fixed to adjacent bridge hangers by cable-stayed cables.

10. The bridge reinforcement structure according to claim 9, characterized in that: At least a portion of the upper surface of the diagonal section extends downwardly in a direction away from the supporting section, and the cross-sectional size of at least a portion of the supporting section gradually increases in a direction away from the bridge beam and slab. The supporting section is provided with a plurality of raised limiting protrusions, and a supporting portion is formed between adjacent limiting protrusions, and the supporting portion is located in the limiting groove.

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