CN216640308U - Connecting device for bridge widening - Google Patents
Connecting device for bridge widening Download PDFInfo
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- CN216640308U CN216640308U CN202123122296.9U CN202123122296U CN216640308U CN 216640308 U CN216640308 U CN 216640308U CN 202123122296 U CN202123122296 U CN 202123122296U CN 216640308 U CN216640308 U CN 216640308U
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Abstract
A connecting device for bridge widening belongs to the bridge construction technology; the block simply supported steel plate girder cross-seam structure is formed by splicing a plurality of simply supported steel plate girder cross-seam structural units; the anchoring structure is an inverted L-shaped section steel or a welded steel plate with a comb-shaped toothed plate; a bracket supporting device is arranged at the lower part of the anchoring structure; the simple steel plate beam seam crossing structure comprises a comb-shaped toothed plate steel plate, two ends of which are matched with the anchoring structure, the lower surface of the comb-shaped toothed plate steel plate is provided with two transverse steel rib plates and a transverse stiffening steel plate, and a movable support mechanism is arranged below the two transverse steel rib plates; the bottom of the movable support mechanism is provided with an installation support, and a bracket supporting device is connected below the installation support. The utility model adopts a simple-supported steel plate beam cross joint structure with longitudinal modulization and partitioning and a supporting mechanism suitable for multi-directional displacement, can adapt to vertical deflection deformation difference, longitudinal and transverse deformation, torsional deformation of a curve beam and a single-pivot beam and the like generated by different rigidity of a new bridge and an old bridge, and can realize quick construction and quick replacement.
Description
The technical field is as follows:
the utility model relates to a connecting device for bridge widening, which belongs to the technical field of bridge construction, in particular to the technical field of widening and splicing of old bridge upgrading and reconstruction.
Background art:
at present, when the old bridge is designed to be widened, the same structural type and span of the new bridge and the old bridge are generally adopted, the upper main beam is widened without considering the connection of a lower structure, the main problem to be considered is to increase the vehicle load of the existing bridge and the additional load effect generated by the uncoordinated deformation of the new bridge and the old bridge as little as possible, and meanwhile, the durability of a splicing seam and the smoothness of driving are also considered. The main beam widening structure mainly comprises three basic types of new and old bridges which are not connected, hinged and rigidly connected.
Under the control of delivered conditions, the new bridge and the old bridge adopt a width splicing mode with the same structure type and span, the requirements cannot be met, the width splicing design problems are many, and a new bridge and old bridge width splicing scheme which can adapt to multidirectional displacement, meets the driving comfort and safety requirements of high-grade roads, can be constructed quickly, is durable and is convenient to maintain is urgently needed. Currently in the prior art, several solutions have emerged:
prior art 1: the utility model relates to a modular comb plate type multidirectional displacement bridge expansion device and an installation method thereof, and belongs to the technical field of bridge expansion devices, in particular to a modular comb plate type multidirectional displacement bridge expansion device and an installation method thereof, and the utility model is an invention patent application with the application number of CN 201110125568.2. The prior art can not meet the displacement of the bridge under the condition of simultaneously generating resultant force distortion in the longitudinal direction, the transverse direction and the vertical direction. The utility model adopts the technical scheme that the modular comb plate type multidirectional shifting bridge expansion device comprises a seam-crossing movable comb plate and a fixed comb plate, wherein a shifting box is transversely arranged at the lower part of the tail end of the seam-crossing movable comb plate, and a movable gap is formed between the upper end surface of the shifting box and the seam-crossing movable comb plate; the shifting box comprises a box body with an upper opening, the box body comprises a multidirectional shifting device arranged in the middle and shifting connecting devices arranged on two sides, the multidirectional shifting device comprises an upper connecting block and a lower connecting block which are in nested sliding fit with a concave spherical surface and a convex spherical surface, the upper connecting block is fixedly connected with the cross-joint movable comb plate, and the lower connecting block is fixedly connected with a bottom plate of the shifting box. The utility model can meet the requirement of multidirectional displacement of the bridge.
The utility model discloses a multidirectional displacement bridge expansion joint device which comprises a seam crossing plate and a fixed plate matched with the seam crossing plate, and is characterized in that a fixed bottom plate fixed with the end part of a beam is arranged below the seam crossing plate, a sliding piece capable of moving transversely relative to the fixed bottom plate is arranged between the seam crossing plate and the fixed bottom plate, and a rotating piece capable of enabling the fixed bottom plate and the seam crossing plate to rotate relatively, horizontally relative to the fixed bottom plate and longitudinally relative to the fixed bottom plate is further arranged between the seam crossing plate and the fixed bottom plate. The multidirectional displacement bridge expansion joint device has the advantages that the sliding piece and the rotating piece are arranged between the seam crossing plate and the fixed bottom plate, so that the expansion joint device has the functions of transverse displacement, longitudinal displacement, horizontal turning angle, vertical turning angle, torsion and the like, and when earthquake and strong wind come, the combination of the functions can effectively solve the requirement of comprehensive displacement of the bridge in the horizontal, longitudinal, vertical, torsion and other directions, and the passing safety of the bridge is fully improved.
The above-mentioned case, although solving some problems of the prior art, still has the following problems:
the two prior arts are solutions for the transverse expansion joint of the bridge, and have the following disadvantages when used as the splicing longitudinal joint of the new bridge and the old bridge: 1) the device can adapt to small displacement in multiple directions and cannot adapt to large displacement in the vertical direction; 2) the transverse expansion joint and the longitudinal deformation joint have different deformation characteristics and stress requirements on the structure, and the stress requirements between a new bridge and an old bridge of the structure are not considered in the transverse expansion joint.
In addition, the new and old bridge splicing seam processing scheme is only suitable for conventional splicing width of bridges, and cannot effectively solve the problem that vertical difference deformation is large when the new and old bridges are spliced due to different spans and structural types. The transverse expansion joint is used for the deformation and the structural stress characteristic that the longitudinal splicing seam of the bridge does not conform to the splicing seam, and can not be used for the splicing seam of a new bridge and an old bridge which are different in span and structural type and have larger vertical difference deformation, and the prior art does not solve the problem of smooth driving when the longitudinal splicing seam is vertically deformed greatly.
The utility model content is as follows:
the utility model aims to provide a connecting device for bridge widening, which can not only adapt to vertical deflection deformation difference generated by different rigidity of a new bridge and an old bridge, but also adapt to multi-directional difference deformation such as longitudinal deformation, transverse deformation, torsional deformation of a curved beam and a single-fulcrum beam.
The purpose of the utility model is realized as follows:
a connecting device for bridge widening comprises an anchoring structure and a partitioned simply-supported steel plate beam seam crossing structure, wherein the partitioned simply-supported steel plate beam seam crossing structure is formed by splicing a plurality of simply-supported steel plate beam seam crossing structure units; expansion joints are arranged between the simply supported steel plate beam seam crossing structure units; the anchoring structure is an inverted L-shaped steel or a welded steel plate with a comb-shaped toothed plate; a bracket supporting device is arranged at the lower part of the anchoring structure; the simple steel plate beam seam crossing structure comprises a comb-shaped toothed plate steel plate with two ends matched with the anchoring structure, two transverse steel rib plates and a transverse bridge stiffening steel plate are arranged on the lower surface of the comb-shaped toothed plate steel plate, and a movable support mechanism is arranged below the two transverse steel rib plates; hoisting holes are symmetrically formed in the comb-shaped toothed plate steel plate, and safety anchor cables for hoisting and supporting the bracket device are hoisted in the hoisting holes; the bottom of the movable support mechanism is provided with an installation support, and a bracket supporting device is connected below the installation support.
The bracket supporting device comprises a pair of bracket steel plates connected to the comb-shaped toothed plate steel plates, an inner stiffening plate and two outer stiffening plates are arranged between the two bracket steel plates, and hole grooves used for hooking safety anchor cables are formed in the two outer stiffening plates.
The movable support mechanism comprises a support body, and the support body is arranged in a limiting groove with a water drainage notch; the limiting groove is arranged on the mounting support.
The upper part of the support body is also provided with a support upper cover plate which is fixedly connected with the two transverse steel rib plates; and a stainless steel plate is fixed below the upper cover plate of the support.
The support body is a PTFE sheet rubber support or a ball steel support capable of adapting to multi-directional displacement.
And a lower base plate is arranged below the hoisting hole.
A guide plate is arranged below the comb-shaped toothed plate steel plate.
The anchoring structure is connected with a U-shaped water collecting tank.
The safety anchor cable is a high-strength steel wire rope, the lower end of the safety anchor cable is provided with a hanging ring, and the hanging ring is clamped in the hole groove.
The utility model adopts a simple-supported steel plate beam cross-joint structure of longitudinal modulization partitioning and a support system suitable for multidirectional displacement, can adapt to vertical deflection deformation difference generated by different rigidity of a new bridge and an old bridge, can also adapt to multidirectional differential deformation such as longitudinal deformation, transverse deformation, torsional deformation of a curve beam and a single-pivot beam, and the like, and realizes quick construction and quick replacement.
Description of the drawings:
FIG. 1 is a schematic plan view of a new bridge and an old bridge widening structure according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 according to the present invention
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 according to the present invention
FIG. 4 is a schematic view of a block-type simply supported steel plate beam gap structure of the present invention
FIG. 5 is a bottom view of FIG. 4 of the present invention
FIG. 6 is a schematic view of the safety anchor cable of the present invention
FIG. 7 is a diagram of the new and old bridge width-sharing horizontal displacement state of the present invention
FIG. 8 is a diagram showing the state of the present invention of the new and old bridge splicing width displacement in the longitudinal direction
The specific implementation mode is as follows:
the present invention will be further described with reference to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8:
the basic design idea of the utility model is as follows:
firstly, according to the calculated value of the vertical deflection deformation of the new bridge and the old bridge, corresponding span of the gap is adopted, and the transverse gradient of the bridge caused by the vertical differential deformation of the new bridge and the old bridge is controlled to ensure the smooth driving of the gap-crossing driving; and secondly, according to the plane geometric construction, the supporting system and the deformation characteristics of the new bridge and the old bridge, corresponding deformation quantity is selected by calculating and drawing up deformation parameters in all directions.
An anchoring structure is designed, the anchoring structure is installed on a new bridge and an old bridge, and corresponding tooth sockets adaptive to multidirectional displacement are reserved between the anchoring structure and a simply supported steel plate beam seam crossing structure.
The supporting bracket device is arranged on the anchoring structure, the movable support mechanism capable of adapting to multidirectional displacement is arranged on the supporting bracket device, and the upper cover plate and the stainless steel plate of the support body are arranged on the corresponding position of the lower part of the simply-supported steel plate beam span joint structure to form a sliding surface.
According to the design concept, the following specific structural design is made:
in this embodiment, the present invention includes two major components: the first is an anchoring structure arranged on a new bridge and an old bridge, and the second is a block simply-supported steel plate girder gap-spanning structure which is formed by splicing a plurality of simply-supported steel plate girder gap-spanning structure units; expansion joints 113 are arranged between the simply supported steel plate beam span joint structural units to adapt to strain in the horizontal direction. The combination is flexible and convenient, and the combination and splicing can be carried out according to the actual condition of the bridge.
In practical implementation, the gaps in each direction should be determined and a certain margin should be left according to structural deformation calculation. In this embodiment, the expansion joint 113 is made of a steel cover plate filled with tst viscoelastic joint material.
The anchoring structure 4 is an inverted L-shaped steel or a welded steel plate with a comb-shaped toothed plate; and a bracket supporting device is arranged at the lower part of the anchoring structure.
The simple steel plate beam seam crossing structure comprises a comb-shaped toothed plate steel plate 3 with two ends matched with an anchoring structure, two transverse steel rib plates 32 and a transverse stiffening steel plate 2 are arranged on the lower surface of the comb-shaped toothed plate steel plate 3, and a movable support mechanism is arranged below the two transverse steel rib plates 32; hoisting holes 31 are symmetrically formed in the comb-shaped toothed plate steel plate 3, and safety anchor cables 5 for hoisting and supporting the bracket device are hoisted in the hoisting holes; a mounting support 64 is arranged at the bottom of the movable support mechanism, and a bracket supporting device is connected below the mounting support 64.
The movable support mechanism comprises a support body 6, and in the embodiment, the support body 6 is a teflon plate rubber support or a ball steel support capable of adapting to multi-directional displacement.
The support body 6 is arranged in a limiting groove 61 with a drainage notch; the limiting groove 61 is arranged on the mounting support 64. The upper part of the support body 6 is also provided with a support upper cover plate 63, and the support upper cover plate 63 is fixedly connected with the two transverse steel rib plates 32.
A stainless steel plate 62 is fixed below the upper cover plate 63 of the holder to form a sliding surface.
The bracket supporting device comprises a pair of bracket steel plates 8 connected to the comb-shaped toothed plate steel plates 3, an inner stiffening plate 81 and two outer stiffening plates 82 are arranged between the two bracket steel plates 8, and the two outer stiffening plates 82 are provided with hole grooves 83 for hooking the safety anchor cables 5; the bracket steel plate 8 is positioned below the mounting support 64 at the bottom of the movable support mechanism.
In this embodiment, a flow guide plate 20 is disposed below the comb-shaped toothed plate steel plate 3, and the anchoring structure 4 is connected to a U-shaped water collecting tank 9. The drainage structure of the utility model is composed of the guide plate 20 and the U-shaped water collecting tank 9.
In the implementation of the present embodiment, the anchoring structure 4 is welded to the anchoring member embedded in the old and new bridges of the prior art. The anchoring part in the concrete beam is a steel bar assembly, and the anchoring part is bound or welded with steel bars in the concrete beam, so that high-performance concrete is poured after effective connection to complete anchoring; the anchoring part in the steel structure beam is a steel component and is welded with the flange of the main beam to form anchoring. The anchoring structure can be suitable for splicing concrete beams and concrete beams, steel structure beams and splicing concrete beams and steel structure beams.
The specific splicing mode of the utility model is as shown in fig. 7 and 8, the existing bridge flange 111 and the newly-built bridge flange 112 are connected with the anchoring structure 4 of the utility model by using the anchoring piece, and the basic splicing of the utility model is realized by the engagement of the anchoring structure 4 and the comb-shaped toothed plate steel plate 3 of the simply-supported steel plate girder seam-crossing structure. The comb-shaped toothed plate steel plate 3 is engaged with the comb-shaped toothed plate of the anchoring structure 4; leaving a comb tooth deformation joint 114. In this embodiment, the partitioned simply-supported steel plate beam span-joint structure includes two simply-supported steel plate beam span-joint structure units, and an expansion joint 113 is arranged between the two simply-supported steel plate beam span-joint structure units; a splice seam centerline 115 is created after splicing.
The movable support mechanism and the bracket supporting device realize the Z-direction supporting system and adapt to multi-direction deflection.
Claims (9)
1. A connecting device for bridge widening is characterized by comprising an anchoring structure and a partitioned simple-supported steel plate beam seam crossing structure, wherein the partitioned simple-supported steel plate beam seam crossing structure is formed by splicing a plurality of simple-supported steel plate beam seam crossing structure units; expansion joints (113) are arranged between the simply supported steel plate beam span joint structural units; the anchoring structure (4) is an inverted L-shaped steel or a welded steel plate with a comb-shaped toothed plate; a bracket supporting device is arranged at the lower part of the anchoring structure; the simple support steel plate beam seam crossing structure comprises a comb-shaped toothed plate steel plate (3) which is matched with an anchoring structure and arranged at two ends, two transverse steel rib plates (32) and a stiffening steel plate (2) along the bridge direction are arranged on the lower surface of the comb-shaped toothed plate steel plate (3), and a movable support mechanism is arranged below the two transverse steel rib plates (32); hoisting holes (31) are symmetrically formed in the comb-shaped toothed plate steel plate (3), and safety anchor cables (5) for hoisting and supporting bracket devices are hoisted in the hoisting holes; the bottom of the movable support mechanism is provided with a mounting support (64), and a bracket supporting device is connected below the mounting support (64).
2. The connecting device for bridge widening as claimed in claim 1, wherein the support bracket means comprises a pair of bracket plates (8) linked to the comb plate (3), an inner stiffener (81) and two outer stiffeners (82) are arranged between the two bracket plates (8), and the two outer stiffeners (82) are provided with holes (83) for hooking the safety anchor cables (5).
3. A connecting device for bridge widening according to claim 1, wherein the movable support mechanism comprises a support body (6), the support body (6) is arranged in a limiting groove (61) with a drainage notch; the limiting groove (61) is arranged on the mounting support (64).
4. The connecting device for bridge widening according to claim 3, wherein a support upper cover plate (63) is further arranged at the upper part of the support body (6), and the support upper cover plate (63) is fixedly connected with the two transverse steel rib plates (32); a stainless steel plate (62) is fixed below the support upper cover plate (63).
5. A connecting device for bridge widening according to claim 3 or 4, wherein the support body (6) is a teflon plate rubber support or a ball steel support capable of adapting to multi-directional displacement.
6. A connecting device for bridge widening according to claim 1, characterised in that a lower backing plate (33) is arranged below the lifting hole (31).
7. The connecting device for bridge widening according to claim 1, characterized in that a deflector (20) is arranged below the comb plate steel plate (3).
8. A connecting device for bridge widening according to claim 1, characterised in that a U-shaped water collection trough (9) is connected to the anchoring structure (4).
9. The connecting device for bridge widening according to claim 1, wherein the safety anchor cable (5) is a high-strength steel wire rope, the lower end of the safety anchor cable is provided with a hanging ring (51), and the hanging ring is clamped in the hole groove (83).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123122296.9U CN216640308U (en) | 2021-12-06 | 2021-12-06 | Connecting device for bridge widening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123122296.9U CN216640308U (en) | 2021-12-06 | 2021-12-06 | Connecting device for bridge widening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216640308U true CN216640308U (en) | 2022-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123122296.9U Active CN216640308U (en) | 2021-12-06 | 2021-12-06 | Connecting device for bridge widening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216640308U (en) |
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2021
- 2021-12-06 CN CN202123122296.9U patent/CN216640308U/en active Active
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