CN115323941A - Assembly for reinforcing a continuous box girder bridge and reinforcing method - Google Patents

Abstract

Embodiments of the present invention provide an assembly and a reinforcement method for continuous box girder bridge reinforcement. The assembly for reinforcing the continuous box girder bridge comprises an arch component, a suspender component and a traction piece. The utility model discloses a bridge structure, including arch subassembly, jib subassembly, second support position, first support position, the arch subassembly extends along predetermineeing the direction, arch subassembly detachably with the bridge links to each other, the one end setting of arch subassembly is in on the first support position, the other end setting of arch subassembly is in on the second supports the position, the jib subassembly extends along upper and lower direction, the one end of jib subassembly with the arch subassembly links to each other, the other end of jib subassembly with the girder treat that to promote position detachably connects, the one end of pulling the piece with first support position links to each other, the other end tensioning ground of pulling the piece with the second supports the position and links to each other. Therefore, the assembly for reinforcing the continuous box girder bridge according to the embodiment of the invention has the advantages of low construction cost and no influence on later vehicle traffic.

Description

Assembly for reinforcing a continuous box girder bridge and reinforcing method

Technical Field

The invention relates to the technical field of bridge reinforcement, in particular to an assembly and a reinforcement method for reinforcing a continuous box girder bridge.

Background

The box girder is along with service time's lapse, and the main girder that is located between two pier stud can appear sinking of different degrees or even fracture, reduces the life of box girder. In the related technology, a cable-stayed system is adopted to reinforce the long-span continuous bridge, and on one hand, the constant load of the original structure is borne by the vertical component of a stay cable, so that the effect of recovering deformation is achieved; on the other hand, the axial pressure of the main beam is increased through the horizontal component of the stay cable. However, the stay cable needs to be stressed permanently and cannot be detached after being reinforced, and the stay cable is generally arranged between adjacent lanes, so that the problems of high reinforcing cost and large potential safety hazards of driving exist.

Disclosure of Invention

The present invention is directed to solving, at least in part, one of the technical problems in the related art. To this end, embodiments of the present invention propose an assembly for continuous box girder bridge reinforcement. The combined piece has the advantages of low construction cost and no influence on the traffic of vehicles in the later period.

The embodiment of the invention also provides a method for reinforcing the continuous box girder bridge.

According to the assembly for reinforcing the continuous box girder bridge, the girder bridge comprises a girder and a plurality of piers, the area of the girder above one of the piers forms a first supporting position, the area of the girder above the other pier forms a second supporting position, and a position to be lifted is arranged between the first supporting position and the second supporting position.

The assembly for reinforcing the continuous box girder bridge comprises an arch component, a suspender component and a traction piece.

The arch subassembly extends along predetermineeing the direction, arch subassembly detachably with the bridge links to each other, the one end setting of arch subassembly is in first support position, the other end setting of arch subassembly is in the second supports the position, the jib subassembly extends along upper and lower direction, the one end of jib subassembly with the arch subassembly links to each other, the other end of jib subassembly with the girder treat that to promote position detachably links to each other, the one end of drawing the piece with first support position links to each other, the other end tensioning ground of drawing the piece with the second supports the position and links to each other.

The arched component in the assembly for reinforcing the continuous box girder bridge is arranged on the girder bridge, the horizontal height of a position to be lifted of the girder is lifted through the suspender component, so that the deflection of the girder is reduced, and the girder which is restored to deform is correspondingly supported through the traction piece so as to avoid secondary deformation of the girder, so that the aim of continuously reinforcing the continuous box girder bridge is fulfilled. Through being in arch subassembly detachably sets up on the girder, just jib subassembly detachably with the girder links to each other, consolidates the back to the girder bridge, can demolish arch subassembly and jib subassembly, maintains the girder through pulling the piece and resumes the state after the deformation, has reuse and saves cost's advantage. In addition, the traction piece maintains the state after the recovery deformation, so that the main beam can be continuously dragged under the condition of not influencing the whole passing of the bridge, and the traction piece has the advantage of not influencing the passing of the road surface of the bridge.

Therefore, the assembly for reinforcing the continuous box girder bridge has the advantages of low cost and no influence on vehicle traffic.

In some embodiments, the arch assembly includes a rail extending along the predetermined direction and detachably disposed on the main beam, and an arch movably disposed on the rail.

In some embodiments, the arch includes an arch body, a first base and a second base, two ends of the arch body are connected with the first base and the second base in a one-to-one correspondence, and each of the first base and the second base is movably connected with the guide rail.

In some embodiments, the main beam has a beam box, the boom assembly has a plurality of boom assemblies, the plurality of boom assemblies are arranged along the predetermined interval, each of the boom assemblies includes a boom body, a reinforcement member, and a fastener, one end of the boom body is connected to the arch assembly, the other end of the boom body sequentially penetrates through the main beam and the reinforcement member, and the fastener is arranged at the other end of the boom body.

In some embodiments, the reinforcing member comprises a concrete reinforcing layer, a supporting plate and a blocking member, one end of the supporting plate is connected with the bottom plate of the box girder, the supporting plate and the blocking member enclose a containing cavity, and the concrete reinforcing layer is poured in the containing cavity.

In some embodiments, the beam box includes a reinforced area formed between the bottom plate and the side wall, the support plate includes a first support portion and a second support portion, the first support portion and the second support portion form an inverted V-shaped structure, an upper end of the first support portion abuts against an upper end of the second support portion, a lower end of the first support portion and a lower end of the second support portion are connected to the reinforced area in a one-to-one correspondence manner, and the blocking member, the first support portion and the second support portion enclose the accommodating cavity.

In some embodiments, the boom body comprises a boom section and a sleeve section, one end of the boom section is connected to the arch assembly, the other end of the boom section is connected to the sleeve section, the sleeve section sequentially penetrates through the main beam and the reinforcement member, and the fastener is connected to the sleeve section.

In some embodiments, the fastener includes a tensioning mechanism and a locking mechanism, the locking mechanism coupled to the sleeve segment, the tensioning mechanism removably disposed on the sleeve segment.

In some embodiments, the locking mechanism includes a lock nut, the sleeve having external threads, the lock nut being threadably connected to the sleeve.

In some embodiments, the tensioning mechanism includes a tensioning rod, a piercing jack and a tensioning nut, the sleeve has an internal thread, the tensioning rod is in threaded connection with the sleeve, the piercing jack and the tensioning nut are arranged on the tensioning rod in a penetrating manner, the tensioning nut is arranged at the lower end of the tensioning rod, and the piercing jack is arranged between the tensioning nut and the plugging piece.

In some embodiments, the retractor comprises a retractor body, a first anchor block and a second anchor block, the first anchor block and the second anchor block correspond to the first supporting position and the second supporting position one by one, and the retractor body is arranged on the first supporting position and the second supporting position in a tensioning manner.

The method for reinforcing the continuous box girder bridge is characterized by comprising the following steps:

an assembly for continuous box girder bridge reinforcement according to any one of the preceding claims;

arranging two ends of the arched component at the first supporting position and the second supporting position, fixing one end of the suspender component with the arched component, and lifting the to-be-lifted position of the main beam to a preset position through the suspender component;

drawing the first and second support locations by a drawing member to maintain the main beam in the predetermined position;

removing the arch assembly and the boom assembly.

Drawings

Fig. 1 is a layout view of a composite member for continuous box girder bridge reinforcement and a box girder bridge according to an embodiment of the present invention.

Fig. 2 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Fig. 3 is a layout view of the arch assemblies and the main beams according to the embodiment of the invention.

Fig. 4 is a sectional view taken along line B-B in fig. 2.

Fig. 5 is a cross-sectional view taken along line C-C of fig. 1.

Fig. 6 is a cross-sectional view taken along line D-D of fig. 5.

Fig. 7 is a cross-sectional view taken along line E-E of fig. 1.

Fig. 8 is a sectional view taken along F-F in fig. 7.

Fig. 9 is a sectional view taken along G-G in fig. 7.

Fig. 10 is a sectional view taken along H-H in fig. 7.

Fig. 11 is a cross-sectional view taken along line I-I of fig. 7.

Fig. 12 is a sectional view taken along J-J in fig. 1.

FIG. 13 is a schematic view of the process of translating the steel arch tower in the embodiment of the present invention.

FIG. 14 is a top view of a steel pylon and track in an embodiment of the invention.

Fig. 15 is an enlarged view at M in fig. 1.

Fig. 16 is an enlarged view at N in fig. 1.

Reference numerals:

an assembly 100 for continuous box girder bridge reinforcement; a main beam 200; a first support location 201; a second support location 202; a to-be-lifted bit 203; a beam box 204; a top plate 2041; a bottom plate 2042; side plates 2043;

a reinforcing region 205; a pier 300;

an arch component 1; a guide rail 11; a first guide rail 111; a second guide rail 112; a rail connector 113;

an arch 12; an arched body 121; a first base 122; a second base 123; an anchor 124; a spacer block 125;

a boom assembly 2; a boom body 21; a boom section 211; a sleeve segment 212;

a reinforcement 22; a concrete reinforcing layer 221; a support plate 222; a first support portion 2221; the second support portion 2222; a blocking member 223; a blocking plate 2231; a steel shim plate 2232; a receiving cavity 224;

a fastener 23; a tension mechanism 231; a tension rod 2311; a feedthrough jack 2312; a tensioning nut 2313; arm braces 2314;

a locking mechanism 232;

a traction member 3; a tractor body 31; a first anchor block 32; a second anchor block 33; a reversing member 34;

a mounting member 4; a lifting lug 41; a connecting pin shaft 42; a steel pipe lock piece 43; a steel bracket 44; a steel roof rail 441; the steel bracket bearing block 442.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

An assembly 100 for continuous box girder bridge reinforcement according to an embodiment of the present invention will be described with reference to fig. 1 to 16.

The combination 100 for reinforcing a continuous box girder bridge according to the embodiment of the invention comprises a girder 200 and a plurality of piers 300, wherein the area of the girder 200 above one of the piers 300 forms a first support position 201 (for example, the girder 200 is shown in fig. 1 to be positioned above the left pier 300), the girder 200 and the area above the other pier 300 form a second support position 202 (for example, the girder 200 is shown in fig. 1 to be positioned above the right pier 300), and a position 203 to be lifted is arranged between the first support position 201 and the second support position 202. The deformation of the main beam 200 is reduced and even recovered by lifting the horizontal height of the to-be-lifted position 203, so that the purpose of reinforcing the box girder bridge is achieved.

The assembly 100 for reinforcing a continuous box girder bridge includes an arch member 1, a boom member 2, and a towing member 3.

The arch assembly 1 extends along a predetermined direction (for example, a left-right direction shown in fig. 1, which is a length direction of a bridge), the arch assembly 1 is detachably connected to the bridge, one end of the arch assembly 1 is disposed on a first support position 201, the other end of the arch assembly 1 is disposed on a second support position 202, the boom assembly 2 extends along an up-down direction (for example, an up-down direction shown in fig. 1, which is a height direction of the arch assembly 1), one end (for example, a left end shown in fig. 1) of the boom assembly 2 is connected to the arch assembly 1, the other end (for example, a right end shown in fig. 1) of the boom assembly 2 is detachably connected to a position 203 to be lifted of the girder 200, one end of the towing member 3 is connected to the first support position 201, and the other end of the towing member 3 is tensionally connected to the second support position 202.

In the related art, the constant load of the main beam 200 borne by the vertical component of the stay cable is adopted, and the stay cable needs to continuously supply force to the bridge after reinforcement so as to achieve the purpose of restraining the secondary deformation of the main beam 200 which is restored to deform, but the stay cable for reinforcement is positioned above the bridge deck of the bridge, so that great potential safety hazards exist in the driving process, and the passing of later-stage vehicles is influenced.

The arched component 1 in the assembly 100 for reinforcing the continuous box girder bridge is arranged on the girder bridge, the position 203 to be lifted of the girder 200 is lifted through the suspender component 2, so that the deformation amount of the girder 200 is reduced, and the girder 200 which is restored to be deformed is correspondingly supported through the traction piece 3, so that the secondary deformation of the girder 200 is avoided, and the aim of continuously reinforcing the continuous box girder bridge is fulfilled. Through setting up arch subassembly 1 detachably on girder 200, and jib subassembly 2 detachably is connected with girder 200, after consolidating the girder bridge, can demolish arch subassembly 1 and jib subassembly 2, maintain the state after resumeing the deformation through traction member 3, arch subassembly 1 and jib subassembly 2 can be by reuse, have the advantage of saving the cost from this. In addition, the traction piece 3 maintains the state after the deformation is recovered, so that the main beam 200 can be continuously dragged without influencing the driving road surface of the bridge, and the advantage of high driving safety is achieved.

Therefore, the assembly 100 for reinforcing the continuous box girder bridge according to the embodiment of the present invention has the advantages of low construction cost and high driving safety.

Optionally, one end of the boom assembly 2 is removably connected to the arch assembly 1.

As shown in fig. 1 and 2, the arch assembly 1 includes a rail 11 and an arch 12, the rail 11 extending in a predetermined direction, the rail 11 being detachably provided on the girder 200, and the arch 12 being movably provided on the rail 11.

The assembly 100 for reinforcing a continuous box girder bridge according to the embodiment of the present invention has an advantage of convenient installation by dividing the arch assembly 1 into the guide rail 11 and the arch 12 and by movably disposing the arch 12 on the guide rail 11 so as to adjust the overall position of the arch 12 during construction. In addition, when the next region to be reinforced is constructed, the whole arch member 12 can be moved to the next region to be reinforced by the guide movement with the guide rail 11, and the construction procedure of the next region to be reinforced is greatly simplified. From this, have the advantage that promotes the efficiency of construction.

It should be noted that the region to be reinforced is a region formed between the first support position 201 and the second support position 202. For example, the region to be reinforced may be a region between two adjacent piers 300.

Alternatively, the arch module 1 is disposed on the center in the width direction of the main beam 200. In the process that the main beam 200 is lifted by the suspender component 2, the uniformity of the force applied to the main beam 200 in the width direction is improved.

Alternatively, the guide rail 11 may include a first guide rail 111 and a second guide rail 112, the first guide rail 111 and the second guide rail 112 are disposed on the girder 200 at intervals in the width direction of the girder bridge, and the first guide rail 111 and the second guide rail 112 are disposed in parallel. The arch 12 is movably disposed on a first rail 111 and a second rail 112. The assembly 100 for reinforcing a continuous box girder bridge according to the embodiment of the present invention improves the stability of installation and movement of the arch 12 by providing two guide rails 11 arranged in parallel. In some embodiments, the first rail 111 and the second rail 112 may be both i-shaped rails 11.

Optionally, a rail connector 421 may be provided between the first rail 111 and the second rail 112. Thereby improving the stability of the installation of the first and second guide rails 111 and 112.

Optionally, the arch 12 is a metal arch 12. For example, the metal arch 12 may be a steel arch 12, an aluminum alloy arch 12, or the like.

As shown in fig. 1 and 2, the arch 12 includes an arch body 121, a first base 122 and a second base 123, both ends of the arch body 121 are connected with the first base 122 and the second base 123 in a one-to-one correspondence, and each of the first base 122 and the second base 123 is movably connected with the guide rail 11. In other words, the first base 122 is movably connected with the guide rail 11, and the second base 123 is movably connected with the guide rail 11.

The assembly 100 for reinforcing a continuous box girder bridge according to an embodiment of the present invention is movably connected to the guide rail 11 through one of the first base 122 and the second base 123. The movable fit between the first base 122 and the guide rail 11 is realized, and the advantage of high connection and guide fit stability is achieved.

Alternatively, the arcuate body 121 may be formed by splicing a plurality of arcuate segments. For example, the arched body 121 is formed by connecting a plurality of steel boxes into an arched structure by means of anchor bolts.

Alternatively, each of the first base 122 and the second base 123 may be formed by welding a plurality of steel plates.

Optionally, the arch component 1 further includes an anchor 124 and a spacer 125, the anchor 124 extends through the main beam 200 and the first base 122 in the up-down direction, and the spacer 125 is disposed at the lower end of the anchor 124. For example, the first and second bases 122, 123 may be secured to the main beam 200 to reinforce areas to be reinforced to prevent misalignment or slippage of the arch 12 during construction. In fixing the first base 122 and the second base 123, an anchor 124 or a screw may be used. Further, the shape of the spacer 125 is in surface contact with the lower surface of the top plate 2041.

Alternatively, each of the first base 122 and the second base 123 is detachably connected with the guide rail 11.

Optionally, the arched body 121 has connecting flanges at both ends, and each of the first base 122 and the second base 123 is screwed with the connecting flanges.

As shown in fig. 1 and 2, the girder 200 has a girder box 204, the boom assembly 2 has a plurality of boom assemblies 2, the plurality of boom assemblies 2 are arranged at predetermined intervals, each boom assembly 2 includes a boom body 21, a reinforcement 22, and a fastener 23, one end of the boom body 21 is connected to the arch assembly 1, the other end of the boom body 21 penetrates the girder 200 in turn, and a portion of the reinforcement 22 is connected to a bottom plate 2042 of the girder box. Specifically, another portion of the reinforcement 22 is connected to the side plate 2043 of the girder box 204, and the fastener 23 is provided at the other end of the boom body 21.

According to the assembly 100 for reinforcing the continuous box girder bridge, which is disclosed by the embodiment of the invention, the plurality of suspender components 2 are arranged, so that the stress uniformity of the position 203 to be lifted of the main girder 200 in the lifting process can be improved, and the problem of breakage caused by uneven stress in the process of recovering the deflection of the main girder 200 through the suspender components 2 is solved. In addition, the reinforcing member 22 and the fastener 23 are arranged to pull the boom body 21, so that the horizontal height of the position 203 to be lifted of the main beam 200 is lifted.

Optionally, the plurality of boom assemblies are disposed evenly and spaced apart.

Optionally, the boom body 21 and the arch assembly 1 are fixed by welding or screwing.

As shown in fig. 1 and 7, the reinforcing member 22 includes a concrete reinforcing layer 221, a support plate 222 and a blocking member 223, one end of the support plate 222 is connected to the bottom plate 2042 of the box girder, the support plate 222 and the blocking member 223 enclose a containing cavity 224, and the concrete reinforcing layer 221 is poured in the containing cavity 224. It will be appreciated that the box girder comprises a top plate 2041, a bottom plate 2042 and at least two side plates 2043, the top plate 2041, the bottom plate 2042 and the side plates 2043 enclosing a girder box 204.

According to the assembly 100 for reinforcing the continuous box girder bridge, provided by the embodiment of the invention, the travel stress part of the concrete reinforcing layer 221, the support plate 222 and the blocking piece 223 is arranged, so that the tension of the suspender component on the main girder is prevented from being directly applied to the top plate 2041, and the damage to the top plate 2041 is further prevented. Meanwhile, the bearing capacity to the tensile force is increased through the reinforcing member 22, and the stability of reinforcing the girder bridge is further increased.

During a specific construction process, a pouring hole may be reserved on the support plate 222 so that the concrete reinforcement layer 221 will be poured into the accommodating cavity 224. The concrete reinforcing layer 221 is connected with the side wall of the beam box 204 after the concrete is poured and solidified, and the stressed end of the suspender assembly 2 is far away from the upper wall (driving road) of the beam box 204 during the process, so that the bridge deck is prevented from being damaged due to uneven stress in the process of drawing the main beam 200 by the suspender assembly 2. Thereby, the stability of reinforcing the girder bridge is increased.

Optionally, the blocking piece 223 comprises a blocking plate 2231 and a steel shim plate 2232. Thereby, the structural strength of the blocking piece 223 is increased. Thereby, the stability of reinforcing the girder bridge is increased.

Optionally, the support plate 222 is removably attached to the bottom plate 2042 of the spar-box. After the construction of the region to be reinforced is completed, the support plate 222 is removed, and the support plate 222 can be reused when the next reinforcing region is reinforced. Therefore, the cost for reinforcing the box girder bridge is further reduced.

As shown in fig. 1 and 7, the girder box 204 includes a reinforcement area 205 formed between the bottom plate 2042 and the side wall, the support plate 222 includes a first support portion 2221 and a second support portion 2222, the first support portion 2221 and the second support portion 2222 form an inverted V-shaped structure, an upper end of the first support portion 2221 abuts against an upper end of the second support portion 2222, a lower end of the first support portion 2221 and a lower end of the second support portion 2222 are connected to each other in a one-to-one correspondence to the reinforcement area, and the blocking member 223, the first support portion 2221 and the second support portion 2222 enclose a receiving cavity 224. It is understood that the reinforcing region 205 of the girder box 204 includes a first reinforcing region 205 and a second reinforcing region 205 which are oppositely disposed, a first support portion 2221 and a second support portion 2222 which are oppositely disposed, a lower end of the first support portion 2221 being connected to the first reinforcing region 205, and a lower end of the second support portion 2222 being connected to the second reinforcing region 205.

According to the assembly 100 for reinforcing the continuous box girder bridge in the embodiment of the present invention, the first supporting portion 2221 and the second supporting portion 2222 form the inverted V-shaped structure, so that the amount of concrete poured into the accommodating cavity 224 can be reduced, and the cost for reinforcing the box girder bridge can be further reduced. In addition, the first support portion 2221 and the second support portion 2222 are connected to each other at a portion where the girder box 204 has the reinforcing region 205, which has an advantage of high stability of connection. The bottom plate 2042, the first support portion 2221 and the second support portion 2222 of the girder box form a triangular area, which has the advantage of good connection stability.

Optionally, the assembly 100 for reinforcing a continuous box girder bridge further comprises a mounting member 4, the mounting member 4 comprises a lifting lug 41, a connecting pin 42, a steel pipe locking member 43 and a steel bracket 44, one end of the connecting pin 42 is connected with the support plate 222, the other end of the connecting pin 42 penetrates through the bottom plate 2042 and the steel bracket 44, the steel pipe locking member 43 is connected with the other end of the connecting pin 42, and the steel bracket 44 is arranged between the steel pipe locking member 43 and the lower surface of the bottom plate 2042. Through setting up lug 41, connecting pin axle 42, steel-pipe retaining member 43 and steel support 44, further promote the homogeneity of reinforcing area 205 atress, promoted structural strength.

Optionally, the steel bracket 44 includes a steel bracket top plate 441 and a steel bracket bearing block 442, and the connecting pin 42 extends in a length direction parallel to the support plate 222, for example, as shown in fig. 11. Further improving the uniformity of the force applied to the support plate 222.

As shown in fig. 6, 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 arch module 1, the other end of the boom section 211 is connected to the sleeve section 212, the sleeve section 212 sequentially penetrates the main beam 200 and the reinforcement 22, and the fastener 23 is connected to the sleeve section 212. It will be appreciated that each of the fastener 23 and the stiffener 22 is connected to the sleeve segment 212.

In the assembly 100 for reinforcing a continuous box girder bridge according to the embodiment of the present invention, the suspension rod body 21 includes a suspension rod section 211 and a sleeve section 212, and the inner and outer connection sites are formed by the sleeve section 212, so as to be connected with the fastening members 23 and the reinforcing members 22,

alternatively, boom section 211 and sleeve section 212 may be connected by welding.

As shown in fig. 6 and 9, the fastening element 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.

According to the assembly 100 for reinforcing the continuous box girder bridge, the tensioning mechanism 231 pulls down the suspender body 21 through the relative matching of the tensioning mechanism 231 and the locking mechanism 232, so that the length of the suspender body 21 above the main girder 200 is reduced, the horizontal height of the position 203 to be lifted is further increased, and the deflection of the girder bridge is maintained through the locking mechanism 232.

Specifically, the locking mechanism 232 includes a lock nut having external threads on the sleeve segment 212, the lock nut being threadably coupled to the sleeve. The assembly 100 for reinforcing the continuous box girder bridge of the embodiment of the invention is matched through a threaded structure, and has the advantages of convenient assembly and disassembly and high connection stability.

Specifically, the tensioning mechanism 231 comprises a tensioning rod 2311, a piercing jack 2312 and a tensioning nut 2313, the sleeve is provided with internal threads, the tensioning rod 2311 is in threaded connection with the sleeve, the piercing jack 2312 and the tensioning nut 2313 penetrate through the tensioning rod 2311, the tensioning nut 2313 is arranged at the lower end of the tensioning rod 2311, and the piercing jack 2312 is arranged between the tensioning nut 2313 and the plugging piece 223.

The assembly 100 for reinforcing the continuous box girder bridge in the embodiment of the invention takes the tensioning nut 2313 as the bearing end of the through jack 2312, and the through jack 2312 is extended so as to pull down the sleeve section 212 by the tensioning rod 2311, so that the assembly has the advantage of high convenience in operation.

Optionally, the tensioning mechanism 231 further comprises a brace 2314, the brace 2314 being disposed between the blocking member 223 and the piercing jack. By arranging the supporting feet 2314, the stress area between the stress of the penetrating jack 2312 and the plugging piece 223 can be increased, and the stress area of the plugging piece 223 or the concrete reinforcing layer 221 and the tension rod 2311 is increased. Therefore, the stability of reinforcing the girder bridge is further improved.

As shown in fig. 1, the pulling member 3 includes a pulling member body 31, a first anchoring block 32 and a second anchoring block 33, the first anchoring block 32 and the second anchoring block 33 correspond to the first supporting position 201 and the second supporting position 202 one by one, the pulling member body 31 extends along a predetermined direction, and the pulling member body 31 is disposed on the first supporting position 201 and the second supporting position 202 in a tensioned manner.

The assembly 100 for reinforcing a continuous box girder bridge according to the embodiment of the present invention is provided with a towing piece body 31, a first anchoring block 32 and a second anchoring block 33.

Optionally, the towing part 3 further comprises a plurality of direction changing members 34, the plurality of direction changing members 34 are arranged at intervals on the main beam 200 along the arrangement direction of the towing part body 31, and the towing part body 31 is arranged on each direction changing member 34. For example, the diverting member 34 may be a diverting pulley. The traction element body 31 is a traction rope or a traction chain. For example, the traction element body 31 may be a steel rope.

Optionally, the tractor body 31 is wrapped around the first anchor block 32 and the second anchor block 33.

The method for reinforcing the continuous box girder bridge comprises the following steps:

the combination 100 for continuous box girder bridge reinforcement according to any one of the preceding claims;

the two ends of the arched component 1 are arranged at a first supporting position 201 and a second supporting position 202, one end of the suspender component 2 is fixed with the arched component 1, and the position 203 to be lifted of the main beam 200 is lifted to a preset position through the suspender component 2.

The first and second supporting locations 201 and 202 are pulled by the pulling member 3 to maintain the main beam 200 at a predetermined position.

The arch assembly 1 and boom assembly 2 are removed.

According to the method for reinforcing the continuous box girder bridge, the arch assembly 1 arranged on the girder provides a fixing point for the suspender assembly 2, the suspender assembly 2 lifts the to-be-lifted position 203, so that the deformed girder 200 is recovered, and the traction piece 3 maintains the deformed girder 200 to be continuously reinforced. Through setting up arch subassembly 1 detachably on the girder bridge, and jib subassembly 2 detachably links to each other with girder 200, after consolidating the operation completion to the box girder bridge, demolish arch subassembly 1 and jib subassembly 2, have reuse and the advantage of saving the cost.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. An assembly for reinforcing a continuous box girder bridge, wherein the girder bridge comprises a girder and a plurality of piers, the area of the girder above one of the piers forms a first support position, the girder and the area above the other pier form a second support position, and a position to be lifted is arranged between the first support position and the second support position; the assembly comprises:

the arched assembly extends along a preset direction and is detachably connected with the beam bridge, one end of the arched assembly is arranged on the first supporting position, and the other end of the arched assembly is arranged on the second supporting position;

the suspender component extends along the up-down direction, one end of the suspender component is connected with the arched component, and the other end of the suspender component is detachably connected with the position to be lifted of the main beam;

and one end of the traction piece is connected with the first support position, and the other end of the traction piece is connected with the second support position in a tensioning manner.

2. A combination for continuous box girder bridge stiffening according to claim 1, wherein the arch assembly comprises rails extending in the predetermined direction and detachably arranged on the main girders and an arch movably arranged on the rails.

3. The combination for continuous box girder bridge reinforcement according to claim 1, wherein the girder has a girder box, the boom assembly has a plurality of boom assemblies, the plurality of boom assemblies are disposed along the predetermined interval, each of the boom assemblies includes a boom body having one end connected to the arch assembly, a reinforcement member and a fastener, the other end of the boom body penetrates the girder and the reinforcement member in turn, and the fastener is disposed at the other end of the boom body.

4. The combination for continuous box girder bridge reinforcement according to claim 3, wherein the reinforcement comprises a concrete reinforcement layer, a support plate and a blocking member, one end of the support plate is connected with the bottom plate of the box girder, the support plate and the blocking member enclose a receiving cavity, and the concrete reinforcement layer is poured in the receiving cavity.

5. The combination for continuous box girder bridge reinforcement according to claim 4, wherein the girder box includes a reinforcement area formed between a bottom plate and a side wall, the support plate includes a first support portion and a second support portion, the first support portion and the second support portion form an inverted V-shaped structure, an upper end of the first support portion abuts an upper end of the second support portion, a lower end of the first support portion and a lower end of the second support portion are connected to the reinforcement area in a one-to-one correspondence, and the blocking member, the first support portion and the second support portion enclose the accommodation chamber.

6. The assembly of claim 4, wherein the boom body comprises a boom section and a sleeve section, one end of the boom section is connected to the arch member, the other end of the boom section is connected to the sleeve section, the sleeve section sequentially penetrates the main beam and the reinforcement member, and the fastener is connected to the sleeve section.

7. The combination for continuous box girder bridge reinforcement according to claim 6, wherein the fastener comprises a tensioning mechanism and a locking mechanism, the locking mechanism being connected to the sleeve section, the tensioning mechanism being detachably disposed on the sleeve section.

8. The combination for continuous box girder bridge reinforcement according to claim 7, wherein the tensioning mechanism comprises a tensioning rod, a piercing jack and a tensioning nut, the sleeve has an internal thread, the tensioning rod is in threaded connection with the sleeve, the piercing jack and the tensioning nut are arranged on the tensioning rod in a penetrating manner, the locking mechanism is arranged at a lower end of the tensioning rod, and the piercing jack is arranged between the tensioning nut and the plugging member.

9. A combination for continuous box girder bridge reinforcement according to claim 1, wherein the tractive element comprises a tractive element body, a first and a second anchoring block, the first and second anchoring block corresponding one to the first and second support locations, the tractive element body being placed in tension on the first and second support locations.

10. A method of reinforcing a continuous box girder bridge, comprising:

a combination for continuous box girder bridge reinforcement according to any one of claims 1 to 9;

arranging two ends of the arched component at the first supporting position and the second supporting position, fixing one end of the suspender component with the arched component, and lifting the to-be-lifted position of the main beam to a preset position through the suspender component;

the traction piece pulls the first supporting position and the second supporting position so as to keep the main beam at the preset position;

removing the arch assembly and the boom assembly.

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