Device and method for reinforcing continuous box girder bridges

Abstract

The embodiment of the present application provides a device and a method for reinforcing a continuous box girder bridge. The device for reinforcing the continuous box girder bridge comprises a support, a suspension cable assembly, a suspender assembly and a traction member. The support is arranged between two support positions. The lower end of the support is arranged on the ground, and the upper end of the support extends above the main girder. One end of the suspension cable assembly is detachably connected with the first end. The suspension cable assembly is arranged on the upper end of the support. The other end of the suspension cable assembly is detachably connected with the second end. The suspender assembly extends along the up-down direction. One end of the suspender assembly is connected with the suspension cable assembly. The other end of the suspender assembly is detachably connected with the main girder at the position to be lifted. Therefore, the device for reinforcing the continuous box girder bridge has the advantages of low construction cost and no influence on the later vehicle traffic.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge reinforcement, and in particular to a device and a reinforcement method for a continuous box girder bridge. Background Art

[0002] Long-span concrete box-girder bridges commonly experience mid-span deflection and diagonal cracking in the web. To address these issues, a cable-stayed system is being used to reinforce long-span continuous beams and continuous rigid-frame bridges. This system uses the vertical component of the stay cables to bear the original structural dead load, while the horizontal component of the stay cables increases the axial pressure on the main beam, achieving both deformation recovery and reinforcement. However, because the stay cables require sustained load, they cannot be removed after reinforcement. Consequently, they are typically installed between adjacent lanes, resulting in high reinforcement costs and significant safety hazards for traffic. Summary of the Invention

[0003] The present invention aims to at least partially address one of the technical problems in the related art. To this end, embodiments of the present invention provide a device for reinforcing a continuous box girder bridge. This assembly has the advantages of low construction cost and no impact on subsequent vehicle traffic.

[0004] An embodiment of the present invention further provides a method for reinforcing a continuous box girder bridge.

[0005] The device for reinforcing a continuous box girder bridge according to an embodiment of the present invention comprises a support member, a suspension cable assembly, a hanger rod assembly, and a traction member. The support member is arranged between two support positions, the lower end of the support member is arranged on the ground, the upper end of the support member extends to above the main beam, one end of the suspension cable assembly is detachably connected to the first end, the suspension cable assembly is mounted on the upper end of the support member, the other end of the suspension cable assembly is detachably connected to the second end, the hanger rod assembly extends in the up-down direction, one end of the hanger rod assembly is connected to the suspension cable assembly, the other end of the hanger rod assembly is detachably connected to the position of the main beam to be lifted, one end of the traction member is connected to one of the support positions, and the other end of the traction member is tensionedly connected to the other support position.

[0006] The beam bridge includes a main beam and multiple piers. The connections between the multiple piers and the main beam form multiple support positions, and there is a position to be pulled up between two adjacent support positions. The main beam has a first end and a second end that are relatively arranged along the length direction of the main beam.

[0007] In an embodiment of the present invention, a device for reinforcing a continuous box girder bridge comprises a support member, a suspension cable assembly, and a hanger rod assembly disposed on the bridge. The hanger rod assembly is used to elevate the main girder to a position to be lifted, thereby reducing the deformation of the main girder. The traction member then provides corresponding support to the main girder after the deformation has been restored, preventing secondary deformation of the main girder, thereby achieving the purpose of continuously reinforcing the continuous box girder bridge. By detachably attaching the suspension cable assembly to the main girder and detachably connecting the hanger rod assembly to the main girder, the suspension cable assembly and hanger rod assembly can be removed after the bridge is reinforced. The traction member maintains the restored state after deformation, allowing the suspension cable assembly and hanger rod assembly to be reused. This provides the advantage of cost savings. Furthermore, the traction member maintains the restored state after deformation, allowing the main girder to be continuously pulled without affecting the road surface of the bridge, thus enhancing driving safety. Furthermore, the suspension cable assembly is mounted across the entire main girder, and the support member provides support for the suspension cable assembly, resulting in high construction efficiency.

[0008] Therefore, the device for reinforcing a continuous box girder bridge according to the embodiment of the present invention has the advantages of low construction cost, high construction efficiency and high driving safety.

[0009] In some embodiments, there are multiple support members, and the multiple support members are arranged at intervals along the length direction of the main beam. There are multiple hanger assemblies, and the multiple hanger assemblies are arranged at intervals along the length direction of the main beam. The suspension cable assembly is arranged at the upper end of each support member.

[0010] In some embodiments, each of the support members includes a first support portion and a second support portion, the upper end of the first support portion and the upper end of the second support portion are abutted, and the lower end of the first support portion and the lower end of the second support portion are respectively arranged on both sides of the width direction of the main beam.

[0011] In some embodiments, the main beam has a beam box, and each of the hanger assemblies includes a hanger body, a reinforcement and a fastener. One end of the hanger body is connected to the suspension assembly, and the other end of the hanger body passes through the main beam and the reinforcement in sequence, and the fastener is arranged at the other end of the hanger body.

[0012] In some embodiments, the reinforcement member includes a concrete reinforcement layer, a connecting frame and a sealing member, one end of the connecting frame is connected to the bottom plate of the box beam, the connecting frame and the sealing member form an accommodating cavity, and the concrete reinforcement layer is poured into the accommodating cavity.

[0013] In some embodiments, the beam box includes a reinforcement area formed between the bottom plate and the side wall, and the connecting frame includes a first connecting part and a second connecting part, the first connecting part and the second connecting part form an inverted V-shaped structure, the upper end of the first connecting part abuts the upper end of the second connecting part, and the lower end of the first connecting part and the lower end of the second connecting part are connected to the reinforcement area one by one, and the sealing member, the first connecting part and the second connecting part enclose the accommodating cavity.

[0014] In some embodiments, the boom body includes a boom section and a sleeve section, one end of the boom section is connected to the suspension cable assembly, and the other end of the boom section is connected to the sleeve section, the sleeve section passes through the main beam and the reinforcement in sequence, and the fastener is connected to the sleeve section.

[0015] In some embodiments, the fastener includes a tensioning mechanism and a locking mechanism, the locking mechanism is connected to the sleeve segment, and the tensioning mechanism is detachably disposed on the sleeve segment.

[0016] In some embodiments, the locking mechanism includes a locking nut, the sleeve has an external thread, and the locking nut is threadedly connected to the sleeve.

[0017] In some embodiments, the tensioning mechanism includes a tensioning rod, a through-hole jack and a tensioning nut, the sleeve has an internal thread, the tensioning rod is threadedly connected to the sleeve, the through-hole jack and the tensioning nut are passed through the tensioning rod, the tensioning nut is arranged at the lower end of the tensioning rod, and the through-hole jack is arranged between the tensioning nut and the sealing member.

[0018] In some embodiments, there are multiple traction members, each of which is formed between adjacent support positions. Each traction member includes a traction member body, a first anchor block and a second anchor block. The first anchor block and the second anchor block correspond one-to-one to the first support position and the second support position. The traction member body is tensionedly arranged on the first support position and the second support position.

[0019] In some embodiments, the suspension cable assembly includes a suspension cable body, a first ground anchor block and a second ground anchor block, the first ground anchor block and the second ground anchor block are arranged one-to-one at the first end and the second end, and the two ends of the suspension cable body are connected to the first ground anchor block and the second ground anchor block one-to-one.

[0020] The method for reinforcing a continuous box girder bridge according to an embodiment of the present invention comprises:

[0021] The device for reinforcing a continuous box girder bridge according to any one of the above items;

[0022] One end of the suspension cable assembly is detachably connected to the first end, the suspension cable assembly is placed on the upper end of the support member, and the other end of the suspension cable assembly is detachably connected to the second end;

[0023] The position to be lifted of the main beam is lifted to a predetermined position by adjusting the boom assembly;

[0024] pulling the first support position and the second support position by a pulling member to keep the main beam at the predetermined position;

[0025] Remove the support member, the suspension cable assembly and the boom assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The diagram shows a device for reinforcing a continuous box girder bridge and a layout diagram of the box girder bridge in an embodiment of the present invention.

[0027] Figure 2 for Figure 1 Cross-section along AA.

[0028] Figure 3 for Figure 1 Cross-section along BB.

[0029] Figure 4 for Figure 2 Cross-section along CC.

[0030] Figure 5 Schematic diagram of a ground anchor block according to an embodiment of the present invention.

[0031] Figure 6 for Figure 5 Cross-section along DD.

[0032] Figure 7 for Figure 5 Cross-section along EE.

[0033] Figure 8 for Figure 1 FF cross-section along the middle.

[0034] Figure 9 for Figure 8 Cross-section along GG.

[0035] Figure 10 for Figure 8 Cross-section along the middle HH.

[0036] Figure 11 for Figure 8 Cross-section along II.

[0037] Figure 12 for Figure 8 Cross-section along JJ.

[0038] Figure 13 Schematic diagram of a locking clip in an embodiment of the present invention.

[0039] Figure 14 for Figure 1 The enlarged view at M in the figure.

[0040] Figure 15 for Figure 1 Magnified view at N in the figure.

[0041] Reference numerals:

[0042] Device 100 for reinforcing a continuous box girder bridge; main beam 200; support position 201; position to be pulled up 202; beam box 203; top plate 2031; bottom plate 2032; connecting plate 2033;

[0043] Reinforced area 204; pier 300;

[0044] Suspension cable assembly 1; first ground anchor block 11; second ground anchor block 12; suspension cable body 13;

[0045] boom assembly 2; boom body 21; boom section 211; sleeve section 212;

[0046] Reinforcement member 22; concrete reinforcement layer 221; connecting frame 222; first connecting portion 2221; second connecting portion 2222; blocking member 223; blocking plate 2231; steel backing plate 2232; accommodating cavity 224;

[0047] Fastener 23; tensioning mechanism 231; tensioning rod 2311; through-hole jack 2312; tensioning nut 2313; support leg 2314; locking mechanism 232; cable clamp 24;

[0048] Traction member 3; traction member body 31; first anchor block 32; second anchor block 33; reversing member 34;

[0049] Mounting member 4; lifting lug 41; connecting member 42; steel pipe locking member 43; steel support member 44; steel support top frame plate 441; steel support pressure block 442;

[0050] Support member 5; first support portion 51; second support portion 52; pile foundation 511; base 512; support frame 513; sliding saddle 53. DETAILED DESCRIPTION

[0051] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0052] Reference below Figures 1-15A device 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention is described.

[0053] The device 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention includes a support member 5 , a suspension cable assembly 1 , a hanger rod assembly 2 and a traction member 3 .

[0054] The support member 5 is set between the two support positions 201, the lower end of the support member 5 is set on the ground, the upper end of the support member 5 extends above the main beam 200, and one end of the suspension cable assembly 1 is connected to the first end (for example, Figure 1 The left side of the box girder bridge shown in FIG is detachably connected, the suspension cable assembly 1 is set on the upper end of the support member 5, and the other end of the suspension cable assembly 1 is connected to the second end (for example, Figure 1 The right side of the box girder bridge shown in the figure is detachably connected, the boom assembly 2 extends in the up and down directions, one end of the boom assembly 2 is connected to the suspension cable assembly 1, and the other end of the boom assembly 2 is detachably connected to the position 202 to be pulled up of the main beam 200, one end of the traction member 3 is connected to one of the support positions 201, and the other end of the traction member 3 is tensionedly connected to the other support position 201.

[0055] The beam bridge includes a main beam 200 and multiple piers 300. The connections between the multiple piers 300 and the main beam 200 form multiple support positions 201. There is a position to be pulled up 202 between two adjacent support positions 201. The main beam 200 has a first end and a second end relatively arranged along the length direction of the main beam 200.

[0056] In the related art, the vertical component of the inclined cable is used to bear the constant load of the main beam 200. After reinforcement, the inclined cables need to continuously supply force to the bridge to achieve the purpose of suppressing the secondary deformation of the main beam 200 that has recovered the deformation. However, the inclined cables used for reinforcement are located above the bridge deck, which poses a huge safety hazard during driving and affects the passage of vehicles in the later period.

[0057] In the device 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention, the support member 5, the suspension assembly 1, and the hanger assembly 2 are arranged on the girder bridge. The hanger assembly 2 is used to lift the main girder 200 at the position to be lifted 202, thereby reducing the deformation of the main girder 200. The traction member 3 then provides corresponding support to the main girder 200 after the deformation has been restored, thereby preventing the main girder 200 from undergoing secondary deformation, thereby achieving the purpose of continuously reinforcing the continuous box girder bridge. By detachably attaching the suspension assembly 1 to the main girder 200 and detachably connecting the hanger assembly 2 to the main girder 200, the suspension assembly 1 and the hanger assembly 2 can be removed after the girder bridge is reinforced. The traction member 3 maintains the restored state after deformation, allowing the suspension assembly 1 and the hanger assembly 2 to be reused. This has the advantage of cost savings. In addition, by maintaining the restored state after deformation by the traction member 3, the main girder 200 can be continuously pulled without affecting the road surface of the girder bridge, which has the advantage of high driving safety. In addition, the suspension cable assembly 1 is laid on the entire main beam 200, and the support member 5 provides support force to the suspension cable assembly 1, which has the advantage of high construction efficiency.

[0058] Therefore, the device 100 for reinforcing a continuous box girder bridge according to the embodiment of the present invention has the advantages of low construction cost, high construction efficiency and high driving safety.

[0059] like Figure 1 and Figure 2 As shown, there are multiple support members 5, and the multiple support members 5 are arranged at intervals along the length direction of the main beam 200; there are multiple hanger assemblies 2, and the multiple hanger assemblies 2 are arranged at intervals along the length direction of the main beam 200; and the suspension cable assembly 1 is arranged at the upper end of each support member 5.

[0060] The device 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention can increase the stability of the support provided by the support members 5 to the suspension assembly 1 by providing multiple support members 5, thereby reducing the shaking of the suspension assembly 1 due to external forces (e.g., wind), thereby reducing the difficulty of construction. In addition, the provision of multiple hanger assemblies 2 can improve the uniformity of the force applied to the position 202 of the main beam 200 to be lifted during the lifting process, thereby preventing the problem of fracture due to uneven force during the process of lifting the main beam 200 to the position 202 to be lifted by the hanger assemblies 2, thereby providing the advantage of high connection stability.

[0061] A sliding saddle 53 is provided at the upper end of the support member 5 , and the suspension cable assembly 1 is passed through the sliding saddle 53 .

[0062] like Figure 1 and Figure 2As shown, each support member 5 includes a first support portion 51 and a second support portion 52. The upper end of the first support portion 51 abuts the upper end of the second support portion 52, and the lower end of the first support portion 51 and the lower end of the second support portion 52 are respectively arranged on either side of the width direction of the main beam 200. It can be understood that the support member 5 is projected into an inverted V shape on a surface perpendicular to the vertical direction and the longitudinal direction of the main beam 200.

[0063] The device 100 for reinforcing a continuous box girder bridge according to the embodiment of the present invention can improve the stability of the support member 5 by providing the first support portion 51 and the second support portion 52 .

[0064] Optionally, the first support portion 51 and the second support portion 52 are symmetrically arranged, and a connecting portion can be provided between the first support portion 51 and the second support portion 52 to further enhance the stability of the support member 5 formed by the first support portion 51 and the second support portion 52. This further reduces the difficulty of construction.

[0065] Furthermore, each of the first support portion 51 and the second support portion 52 includes a pile foundation 511, a base 512 and a support frame 513, the lower end of the pile foundation 511 is set on the ground, the upper end of the pile foundation 511 extends upward in the up-down direction, the base 512 is set at the upper end of the pile foundation 511, the first support portion 51 is set at the upper end of the base 512, and each of the first support portion 51 and the second support portion 52 extends obliquely toward opposite directions.

[0066] Optionally, support frame 513 is constructed by splicing together multiple support segments. For example, support frame 513 can be constructed by connecting multiple steel boxes with anchor bolts. This facilitates assembly and disassembly of support frame 513 (which is relatively large and heavy) and improves construction efficiency.

[0067] Optionally, the suspension cable assembly 1 is arranged at the center of the width direction of the main beam 200. When the boom assembly 2 lifts the main beam 200, the uniformity of the force applied to the main beam 200 in the width direction is improved.

[0068] like Figure 1 and Figure 8 As shown, the main beam 200 has a beam box 203 (the box beam includes a top plate 2031, a bottom plate 2032 and at least two connecting plates 2033, and the top plate 2031, the bottom plate 2032 and the connecting plates 2033 enclose the beam box 203), each boom assembly 2 includes a boom body 21, a reinforcement 22 and a fastener 23, and one end of the boom body 21 (for example, Figure 1 The upper end shown in FIG) is connected to the suspension cable assembly 1, and the other end of the boom body 21 (for example, Figure 1 The lower end shown in FIG) passes through the main beam 200 and the reinforcement 22 in sequence, and the fastener 23 is provided at the other end of the boom body 21.

[0069] The device 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention can pull the boom body 21 by providing a reinforcing member 22 and a fastener 23 , thereby raising the position of the to-be-lifted position 202 of the main beam 200 .

[0070] Optionally, the boom body 21 is connected to the suspension cable assembly 1 via a cable clamp 24. Figure 1 and Figure 13 shown.

[0071] In other embodiments of the present invention, the boom body 21 and the suspension cable assembly 1 may be fixed by welding or threaded connection.

[0072] like Figure 8 and Figure 9 As shown, the reinforcement member 22 includes a concrete reinforcement layer 221, a connecting frame 222 and a sealing member 223. One end of the connecting frame 222 is connected to the bottom plate 2032 of the box beam. The connecting frame 222 and the sealing member 223 enclose an accommodating cavity 224, and the concrete reinforcement layer 221 is poured into the accommodating cavity 224.

[0073] The continuous box girder bridge reinforcement device 100 of the present invention, by providing a concrete reinforcement layer 221, a connecting frame 222, and a blocking member 223 to the stress-bearing portion, prevents the tensile force exerted by the hanger assembly 2 on the main beam 200 from directly acting on the top plate 2031, further preventing damage to the top plate 2031. Furthermore, the reinforcement member 22 increases the tensile force-bearing capacity, thereby enhancing the stability of the bridge reinforcement.

[0074] During construction, pre-cast holes can be reserved on the connecting frame 222 to allow for the pouring of a concrete reinforcement layer 221 into the accommodating cavity 224. After the concrete reinforcement layer 221 solidifies, it connects to the sidewalls of the beam box 203. During this process, the force-bearing end of the boom assembly 2 is kept away from the upper wall (the road surface) of the beam box 203, preventing damage to the bridge deck caused by uneven force applied by the boom assembly 2 during the pulling of the main beam 200. This enhances the stability of the bridge beam reinforcement.

[0075] Optionally, the blocking member 223 includes a blocking plate 2231 and a steel backing plate 2232. This increases the structural strength of the blocking member 223 and the stability of the beam bridge reinforcement.

[0076] Optionally, the concrete reinforcement layer 221 is connected to the side wall of the beam box 203 after pouring and solidifying. During this process, the force-bearing end of the boom assembly 2 is away from the upper wall (driving road surface) of the beam box 203, so as to avoid damage to the bridge deck due to uneven force when the boom assembly 2 drops and pulls the main beam 200.

[0077] Optionally, the blocking member 223 includes a blocking plate 2231 and a steel backing plate 2232. Thus, the structural strength of the blocking member 223 is increased.

[0078] Optionally, the connecting frame 222 is detachably connected to the bottom plate 2032 of the beam box 203. After the construction of the area to be reinforced is completed, the connecting frame 222 is removed and can be reused when reinforcing the next reinforcement area, thereby further reducing the cost of box girder bridge reinforcement.

[0079] like Figure 1 and Figure 8 As shown, the beam box 203 includes a reinforced area (corner) 204 formed between the bottom plate 2032 and the side wall. The connecting frame 222 includes a first connecting portion 2221 and a second connecting portion 2222. The first connecting portion 2221 and the second connecting portion 2222 form an inverted V-shaped structure. The upper end of the first connecting portion 2221 abuts the upper end of the second connecting portion 2222, and the lower end of the first connecting portion 2221 and the lower end of the second connecting portion 2222 are connected to the reinforced area in a one-to-one correspondence. The blocking member 223, the first connecting portion 2221, and the second connecting portion 2222 enclose an accommodating cavity 224. It can be understood that the reinforced area 204 includes a first reinforced area 204 and a second reinforced area 204 arranged opposite each other. The first connecting portion 2221 and the second connecting portion 2222 are arranged opposite each other. The lower end of the first connecting portion 2221 is connected to the first reinforced area 204, and the lower end of the second connecting portion 2222 is connected to the second reinforced area 204.

[0080] The continuous box girder bridge reinforcement device 100 of the present invention, by forming an inverted V-shaped structure between the first connecting portion 2221 and the second connecting portion 2222, can reduce the amount of concrete used to pour the accommodating cavity 224, further reducing the cost of box girder bridge reinforcement. Furthermore, connecting the first connecting portion 2221 and the second connecting portion 2222 with the portion of the beam box 203 having the reinforced area 204 provides a high degree of connection stability. The bottom plate 2032 of the beam box 203, the first connecting portion 2221, and the second connecting portion 2222 form a triangular area, which also provides a high degree of connection stability.

[0081] Optionally, the device 100 for reinforcing a continuous box girder bridge further includes a mounting member 4, which includes a lifting lug 41, a connector 42, a steel pipe locking member 43, and a steel support member 44. One end of the connector 42 is connected to the connecting frame 222, and the other end of the connector 42 passes through the bottom plate 2032 and the steel support member 44. The steel pipe locking member 43 is connected to the other end of the connector 42, and the steel support member 44 is disposed between the steel pipe locking member 43 and the lower surface of the bottom plate 2032. This further improves the uniformity of the force applied to the reinforced area 204 and enhances the structural strength.

[0082] Optionally, the steel support member 44 includes a steel support top frame plate 441 and a steel support pressure block 442, and the length extension direction of the connecting member 42 is arranged parallel to the connecting frame 222. This further improves the progressiveness of the force applied to the reinforced area 204 and enhances the structural strength.

[0083] like Figure 1 and Figure 8 As shown, the boom body 21 includes a boom section 211 and a sleeve section 212. One end of the boom section 211 is connected to the suspension cable assembly 1, and the other end of the boom section 211 is connected to the sleeve section 212. The sleeve section 212 sequentially passes through the main beam 200 and the reinforcement 22, and the fastener 23 is connected to the sleeve section 212. It can be understood that each of the fastener 23 and the reinforcement 22 is connected to the sleeve section 212.

[0084] In the device 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention, the boom body 21 includes a boom section 211 and a sleeve section 212 , and the sleeve section 212 forms inner and outer connection points for connecting with the fastener 23 and the reinforcement 22 .

[0085] Optionally, the boom section 211 and the sleeve section 212 may be connected by welding.

[0086] like Figure 1 and Figure 8 As shown, the fastener 23 includes a tensioning mechanism 231 and a locking mechanism 232 . The locking mechanism 232 is connected to the sleeve section 212 , and the tensioning mechanism 231 is detachably disposed on the sleeve section 212 .

[0087] The device 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention, through the relative cooperation of the tensioning mechanism 231 and the locking mechanism 232, the tensioning mechanism 231 pulls down the hanger body 21 to reduce the length of the hanger body 21 above the main beam 200, thereby raising the horizontal height of the position to be pulled 202, and then maintaining the deflection of the beam bridge through the locking mechanism 232.

[0088] Specifically, the locking mechanism 232 includes a locking nut, and the sleeve section 212 has an external thread, and the locking nut is threadedly connected to the sleeve. The device 100 for reinforcing a continuous box girder bridge according to the embodiment of the present invention has the advantages of easy assembly and disassembly and high connection stability through the threaded structure.

[0089] Specifically, the tensioning mechanism 231 includes a tensioning rod 2311, a through-core jack 2312 and a tensioning nut 2313. The sleeve has an internal thread. The tensioning rod 2311 is threadedly connected to the sleeve. The through-core jack 2312 and the tensioning nut 2313 are passed through the tensioning rod 2311. The tensioning nut 2313 is arranged at the lower end of the tensioning rod 2311. The through-core jack 2312 is arranged between the tensioning nut 2313 and the sealing piece 223.

[0090] The device 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention uses the tensioning nut 2313 as the load-bearing end of the through-hole jack 2312. The through-hole jack 2312 is extended so that the sleeve section 212 can be pulled down through the tensioning rod 2311, which has the advantage of high operational convenience.

[0091] Optionally, the tensioning mechanism 231 further includes a support leg 2314 disposed between the blocking member 223 and the through-hole jack. The support leg 2314 increases the load-bearing area between the through-hole jack 2312 and the blocking member 223, thereby increasing the load-bearing area between the blocking member 223 or the concrete reinforcement layer 221 and the tensioning rod 2311. This enhances the stability of the beam bridge reinforcement.

[0092] like Figure 1 and Figure 8 As shown, there are multiple traction members 3, each traction member 3 is formed between adjacent support positions 201, and each traction member 3 includes a traction member body 31, a first anchor block 32 and a second anchor block 33. The first anchor block 32 and the second anchor block 33 correspond one-to-one to the first support position 201 and the second support position 201, and the traction member body 31 is tensionedly arranged on the first support position 201 and the second support position 201.

[0093] The device 100 for reinforcing a continuous box girder bridge according to the embodiment of the present invention comprises a traction member body 31 , a first anchor block 32 and a second anchor block 33 .

[0094] Optionally, the traction member 3 further includes a plurality of diverters 34, which are spaced apart and arranged on the main beam 200 along the direction in which the traction member body 31 is arranged. The traction member body 31 is mounted on each diverter 34. For example, the diverter 34 may be a diverting pulley. The traction member body 31 may be a traction rope or a traction chain. For example, the traction member body 31 may be a steel rope.

[0095] Optionally, the traction member body 31 is wound around the first anchor block 32 and the second anchor block 33 .

[0096] like Figure 1 As shown, the suspension cable assembly 1 includes a suspension cable body 13, a first ground anchor block 11 and a second ground anchor block 12. The first ground anchor block 11 and the second ground anchor block 12 are arranged at the first end and the second end in a one-to-one correspondence, and the two ends of the suspension cable body 13 are connected to the first ground anchor block 11 and the second ground anchor block 12 in a one-to-one correspondence.

[0097] Alternatively, the suspension cable body may be a steel cable.

[0098] The method for reinforcing a continuous box girder bridge according to an embodiment of the present invention includes:

[0099] The device 100 for reinforcing a continuous box girder bridge according to any one of the above items;

[0100] The two ends of the suspension cable assembly 1 are set at the first support position 201 and the second support position 201, one end of the suspension rod assembly 2 is fixed to the suspension cable assembly 1, and the position to be pulled 202 of the main beam 200 is lifted to the predetermined position through the suspension rod assembly 2.

[0101] The first support position 201 and the second support position 201 are pulled by the pulling member 3 to keep the main beam 200 at a predetermined position.

[0102] Remove the suspension cable assembly 1 and the boom assembly 2.

[0103] The method for reinforcing a continuous box girder bridge according to an embodiment of the present invention uses a suspension cable assembly installed on the main beam 200 to provide a fixed location for the hanger rod assembly 2. The hanger rod assembly 2 is then used to lift the position to be lifted, thereby restoring the deformed main beam 200. The traction member 3 then maintains the restored main beam 200 in its original shape for continuous reinforcement. By detachably installing the suspension cable assembly on the beam bridge and detachably connecting the hanger rod assembly 2 to the main beam 200, the suspension cable assembly and the hanger rod assembly 2 can be removed after the beam bridge reinforcement operation is completed, thus providing the advantages of reuse and cost savings.

[0104] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0105] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0106] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0107] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0108] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean 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 present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0109] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A device for reinforcing a continuous box girder bridge, characterized in that: The beam bridge comprises a main beam and a plurality of piers, wherein the connections between the plurality of piers and the main beam form a plurality of support positions, and a position to be pulled up is provided between two adjacent support positions. The main beam has a first end and a second end oppositely disposed along the length direction of the main beam. The device comprises: A support member, the support member is arranged between the two support positions, the lower end of the support member is arranged on the ground, and the upper end of the support member extends to above the main beam; a suspension cable assembly, one end of which is detachably connected to the first end, the suspension cable assembly being mounted on the upper end of the support member, and the other end of which is detachably connected to the second end; a boom assembly extending in an up-down direction, one end of the boom assembly being connected to the suspension cable assembly, and the other end of the boom assembly being detachably connected to the position of the main beam to be lifted; a traction member, one end of which is connected to one of the support positions, and the other end of which is tensionedly connected to the other support position; The main beam has a beam box, and each of the hanger assemblies includes a hanger body, a reinforcement and a fastener. One end of the hanger body is connected to the suspension cable assembly, and the other end of the hanger body passes through the main beam and the reinforcement in sequence, and the fastener is arranged at the other end of the hanger body. The reinforcement includes a concrete reinforcement layer, a connecting frame and a sealing member. One end of the connecting frame is connected to the bottom plate of the box beam, and the connecting frame and the sealing member enclose an accommodating cavity, and the concrete reinforcement layer is poured in the accommodating cavity.

2. The device for reinforcing a continuous box girder bridge according to claim 1, characterized in that: There are multiple support members, and the multiple support members are arranged at intervals along the length direction of the main beam. There are multiple hanger assemblies, and the multiple hanger assemblies are arranged at intervals along the length direction of the main beam. The suspension cable assembly is arranged at the upper end of each support member.

3. The device for reinforcing a continuous box girder bridge according to claim 2, characterized in that: Each of the support members includes a first support portion and a second support portion, the upper end of the first support portion and the upper end of the second support portion are abutted, and the lower end of the first support portion and the lower end of the second support portion are respectively arranged on both sides of the width direction of the main beam.

4. The device for reinforcing a continuous box girder bridge according to claim 1, characterized in that: The beam box includes a reinforcement area formed between the bottom plate and the side wall, and the connecting frame includes a first connecting part and a second connecting part. The first connecting part and the second connecting part form an inverted V-shaped structure. The upper end of the first connecting part abuts the upper end of the second connecting part, and the lower end of the first connecting part and the lower end of the second connecting part are connected to the reinforcement area one by one. The sealing member, the first connecting part and the second connecting part enclose the accommodating cavity.

5. The device for reinforcing a continuous box girder bridge according to claim 1, characterized in that: The boom body includes a boom section and a sleeve section, one end of the boom section is connected to the suspension cable assembly, and the other end of the boom section is connected to the sleeve section. The sleeve section passes through the main beam and the reinforcement in sequence, and the fastener is connected to the sleeve section.

6. The device for reinforcing a continuous box girder bridge according to claim 5, characterized in that: The fastener comprises a tensioning mechanism and a locking mechanism, wherein the locking mechanism is connected to the sleeve section, and the tensioning mechanism is detachably arranged on the sleeve section.

7. The device for reinforcing a continuous box girder bridge according to claim 6, characterized in that: The locking mechanism includes a locking nut, the sleeve has an external thread, and the locking nut is threadedly connected to the sleeve.

8. The device for reinforcing a continuous box girder bridge according to claim 7, characterized in that: The tensioning mechanism includes a tensioning rod, a through-core jack and a tensioning nut. The sleeve has an internal thread. The tensioning rod is threadedly connected to the sleeve. The through-core jack and the tensioning nut are passed through the tensioning rod. The tensioning nut is arranged at the lower end of the tensioning rod. The through-core jack is arranged between the tensioning nut and the sealing member.

9. The device for reinforcing a continuous box girder bridge according to claim 1, characterized in that: There are multiple traction members, each of which is formed between adjacent support positions. Each traction member includes a traction member body, a first anchor block and a second anchor block. The first anchor block and the second anchor block correspond one-to-one to the first support position and the second support position. The traction member body is tensionedly arranged on the first support position and the second support position.

10. The device for reinforcing a continuous box girder bridge according to claim 1, characterized in that: The cable assembly includes a cable body, a first anchor block and a second anchor block. The first anchor block and the second anchor block are arranged at the first end and the second end in a one-to-one correspondence. The two ends of the cable body are connected to the first anchor block and the second anchor block in a one-to-one correspondence.

11. A method for reinforcing a continuous box girder bridge, characterized in that: include: The device for reinforcing a continuous box girder bridge according to any one of claims 1 to 10; One end of the suspension cable assembly is detachably connected to the first end, the suspension cable assembly is placed on the upper end of the support member, and the other end of the suspension cable assembly is detachably connected to the second end; The position to be lifted of the main beam is lifted to a predetermined position by adjusting the boom assembly; pulling the first support position and the second support position by a pulling member to keep the main beam at the predetermined position; Remove the support member, the suspension cable assembly and the boom assembly.

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