CN212641185U

CN212641185U - Bridge expansion device

Info

Publication number: CN212641185U
Application number: CN202020600853.XU
Authority: CN
Inventors: 李恒; 赵荣吉; 曹亚蓉; 王威; 周新平; 于成云; 刘长天; 吴迪; 张建祥
Original assignee: Xi'an Huadun Engineering Technology Co ltd
Current assignee: Xi'an Huadun Engineering Technology Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-03-02
Anticipated expiration: 2030-04-21

Abstract

A bridge expansion device comprises a pre-buried assembly, a movable assembly, a bearing assembly and an elastic pre-pulling piece. One side of the movable assembly is connected with the embedded assembly, the other side of the movable assembly is connected with the bearing assembly, and an elastic pre-pulling piece is arranged between the bearing assembly and the movable assembly. The utility model provides a bridge telescoping device pre-buried subassembly reserves sufficient length and beam-ends overlap joint, and external force can evenly transmit load to the roof beam body when to the beam-ends changeover portion, and reference column one end is arranged in and is close to beam-ends face one side, makes this department's mounting groove reserve sufficient space, avoids the end concrete to lead to the fact structural damage in the long-term atress of relapseing in the use. When the rotation takes place for the beam-ends, the bearing assembly can be ensured all the time to hug closely the roof beam body from the trend of restoring to the throne of elasticity pretension piece, avoids the roof beam end concrete to last frequently to bear the impact force and cause the concrete cracked to reduce the noise in the use, improve and use the travelling comfort, the high uniformity of installation has really been realized designing to the triune modular design, very big improvement the efficiency of construction and installation quality.

Description

Bridge expansion device

Technical Field

The application relates to the technical field of bridge construction, in particular to a bridge expansion device.

Background

The expansion device is an important component of a bridge pavement and is mainly used for adapting to bridge expansion and contraction displacement caused by temperature expansion and contraction of a bridge, contraction and creep of a concrete and prestressed concrete bridge, expansion and contraction displacement of a bridge beam structure under the action of load and the like, and meanwhile, a main structure of the expansion device has enough bearing capacity and is reliably and fixedly connected with the main structure of the bridge. With the increasing construction of medium and large bridges, the stress of the bridges in the use process is more and more complex. The common products at present comprise a modulus type expansion device and a multidirectional shifting comb plate expansion device. In the rapid development period of highway construction, the modular expansion device gradually replaces a plate type rubber expansion device in the initial development stage in engineering. In recent years, in order to solve the problem of complex stress of bridges, a multidirectional shifting comb plate expansion device is developed. However, the existing telescopic device generally has the following defects:

1. the fishback telescoping device is in the long-term loading process of vehicle, and the easy perk of tooth end causes the incident.

2. The transition section concrete of the expansion device and the beam end connecting part is easy to break and crack, so that the using effect and the service life of the expansion device are greatly reduced, and traffic needs to be cut off, replaced and maintained when the expansion device is serious.

3. All parts of the multidirectional shifting comb plate telescopic device are in rigid connection, the problem of inflexibility in rotation is easily caused in the use process, and the use comfort is influenced due to the fact that vibration and noise are large under the action of external force. And frequent rigid structure vibration is likely to cause premature failure of the telescopic device.

4. The main atress spare part is hugged closely the mounting groove and is close to beam-ends one side in design and use to current telescoping device, and the terminal surface concrete is the weak position of atress, and frequent atress for a long time in the use easily causes terminal surface roof beam body concrete damage, and this position is owing to be located the mounting groove bottom, so repair the difficulty, very big life that has shortened the telescoping device has increased engineering cost.

5. No matter be the modular telescoping device that old bridge used a large amount of, still the multidirectional fishback telescoping device that shifts that newly-built bridge used gradually, all need spare part to place the installation one by one, the accurate mastery degree of each installation step has all directly influenced the result of use and the life-span after the telescoping device installation, and the low and installation quality of efficiency of construction can't guarantee.

SUMMERY OF THE UTILITY MODEL

The application provides a bridge telescoping device to solve current device tooth end perk, rigid structure destruction, noise pollution, the damaged fracture of changeover portion concrete, the frequent atress of beam-ends concrete damage and installation quality subalternation problem. The device comprises a pre-buried assembly, a movable assembly, a bearing assembly and an elastic pre-pulling piece, wherein one side of the movable assembly is connected with the pre-buried assembly, the other side of the movable assembly is connected with the bearing assembly, and the elastic pre-pulling piece is arranged between the bearing assembly and the movable assembly.

Optionally, the embedded component includes a plate a, a plate b and a plate c, the bottom surface of the plate b is connected with the plate a, and the top surface of the plate b is connected with the plate c.

Optionally, the movable assembly comprises a connecting plate, a stop block, a limiting block and a positioning column, one side of the connecting plate is connected with the stop block, the other side of the connecting plate is connected with the positioning column, the stop block and the limiting block are arranged on the connecting plate at intervals, and two adjacent stop blocks are connected with the lower end of the middle limiting block.

Optionally, the bearing assembly includes a plate d and a plate e, and one end of the plate d is connected with one end of the plate e to form a continuous bearing surface.

Optionally, the elastic pre-pulling member is a material structure having an elastic function and a certain load-bearing performance.

Optionally, the connecting plate is connected to the plate a through the positioning column.

Optionally, the upper end of the limiting block can be connected with the plate d through a clamping tenon.

Optionally, the movable assemblies are arranged below the bearing assembly, one side of each movable assembly connected with the embedded assembly is arranged close to the beam end face, and one side of each movable assembly connected with the embedded assembly is arranged far away from the beam end face.

Optionally, the contact position of the limiting block and the connecting plate is arranged in a matching manner.

Optionally, the connecting plate can also be divided into a connecting plate body and a bearing cushion block, the contact position of the bearing cushion block and the limiting block is arranged in a matching manner, and a cushion pad can be additionally arranged between the connecting plate body and the bearing cushion block.

The technical scheme provided by the application comprises the following beneficial technical effects:

bridge telescoping device embedded component and the sufficient length of beam-ends overlap joint in this application, when the telescoping device bears external force load, but the sufficient overlap joint length of beam-ends changeover portion evenly transmits load to the roof beam body, set up elasticity pretension piece between carrier assembly and the movable assembly, the loading board produces vertical rotation when external force is to carrier assembly one end, elasticity pretension piece from restoring to the throne internal force make the loading board hug closely the roof beam body, avoid the concrete of beam-ends concrete because of frequently bearing the impact force and cause cracked, the rigidity vibration frequency of telescoping device structure has been reduced simultaneously, reduce the noise in the use, improve and use the travelling comfort, can also ensure smooth-going continuous of carrier assembly, improve the vehicle and pass through the travelling comfort. One end of the positioning column is arranged on one side close to the end face of the beam, so that enough space can be reserved in the mounting groove, and structural damage caused by long-term repeated stress of end face concrete in the using process is avoided. In the installation process of the telescopic device, the pre-embedded component is installed after the groove is formed, the leveling and positioning are carried out, the movable component, the elastic pre-pulling component and the bearing component are sequentially installed, the modular structural design of the pre-embedded component, the movable component and the bearing component really realizes the height consistency from design to installation in engineering application, and the construction efficiency and the installation quality are greatly improved.

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained based on these drawings without any inventive exercise.

Drawings

Fig. 1 is a schematic structural diagram of a bridge expansion device provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a pre-buried assembly provided in the embodiment of the present application.

Fig. 3 is a schematic structural diagram of a movable assembly according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a connection plate provided in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a carrier assembly according to an embodiment of the present application.

Description of reference numerals:

1. pre-burying the assembly; 2. a movable component; 3. a load bearing assembly; 4. an elastic pre-pull member; 5. a plate a; 6. a plate b; 7. a plate c; 8. a connecting plate; 9. a stopper; 10. a limiting block; 11. a positioning column; 12. a plate d; 13. a plate e; 14. a tenon is clamped; 15. a connecting plate body; 16. a cushion pad; 17. and bearing the cushion block.

Detailed Description

The present application will now be described in detail with reference to the exemplary embodiments shown in fig. 1-5, which are provided to illustrate but not limit the present application.

Exemplarily, as shown in fig. 1, the present application provides a schematic structural diagram of a bridge expansion device, which includes a pre-buried component 1, a movable component 2, a bearing component 3, and an elastic pre-pulling component 4. One side of the movable component 2 is connected with the embedded component 1, the other side of the movable component is connected with the bearing component 3, and an elastic pre-pulling piece 4 is arranged between the bearing component 3 and the movable component 2.

Optionally, for example, as shown in fig. 2, which is a schematic structural diagram of the embedded assembly 1 provided in the present application, the embedded assembly 1 includes a plate a5, a plate b6, and a plate c 7. The bottom surface of the plate b6 is embedded in the clamping groove on the top surface of the plate a5 and fixedly connected with the plate a5, and the top surface of the plate b is embedded in the clamping groove on the bottom surface of the plate c7 and fixedly connected with the plate c 7.

Optionally, after concrete is poured, the embedded assembly 1 is fixedly connected with the beam body, and the embedded assembly can be prefabricated in the beam body in advance and can also be installed after the installation groove is chiseled.

Optionally, exemplarily, as shown in fig. 3, the movable assembly 2 includes a connecting plate 8, stoppers 9, stoppers 10 and positioning pillars 11, exemplarily, as shown in fig. 4, which is a schematic structural diagram of the connecting plate 8, the connecting plate 8 includes a connecting plate body 15 and a bearing cushion block 17, one end of the connecting plate body 15 is provided with a clamping groove, the top surface of the bearing cushion block 17 is provided with an arc-shaped groove, the bearing cushion block 17 is embedded into the clamping groove, the top surface is flush with the top surface of the connecting plate body 15, a cushion 16 is additionally arranged between the connecting plate body 15 and the bearing cushion block 17, one side of the connecting plate 8 is in bolted connection with the stoppers 9, the other side is provided with positioning pillar connecting through holes, the positioning pillars pass through the connecting through holes to be connected with the connecting plate 8, the stoppers 9 are arranged on.

When the external force effect underbeam end rotated, connecting plate 8 took place the level around reference column 11 and rotated, and stopper 10 horizontal bridge and along the displacement of bridge direction have been restricted respectively to the dog 9 at stopper 10 both ends and connecting plate 8 of lower extreme, and the stopper lower extreme produces relative motion with the arc recess, and the adaptation roof beam body is vertical to be rotated. Meanwhile, the lower end of the limiting block 10 and the arc-shaped groove of the connecting plate 8 are coaxially and tangentially arranged, surface contact is guaranteed between parts in the vertical load transmission direction, the load is guaranteed to be transmitted uniformly, and the use safety is improved.

Alternatively, and illustratively, as shown in fig. 5, the carrier assembly 3 includes a plate d12 and a plate e 13. One ends of the plate d12 and the plate e13 are transversely arranged in a bridge-shaped manner, and one end of the plate d12 comb-shaped structure is assembled and matched with one end of the plate e13 comb-shaped structure to form a continuous bearing surface.

Optionally, a plurality of elastic pre-pulling pieces 4 are arranged between the bearing component 3 and the movable component 2. The elastic pretensioning element is bolted at one end to the plate d12 and at the other end to the connection plate 8.

When external force is applied to one end of the plate d12, the plate d12 rotates vertically, the tooth end tends to tilt, and the elastic pre-pulling piece 4 ensures that the tooth end is tightly attached to the beam under the continuous tension action until the vertical rotation of the plate d12 disappears after the external force is unloaded. When bearing component 3 bears external force, the pulling force of elastic pre-pulling piece 8 ensures that bearing component 3 is always tightly attached to the beam body, and jumping and impact load of bearing component 3 and the beam body contact area are avoided, so that the beam end concrete is prevented from being cracked, the rigid vibration frequency of the telescopic device structure is reduced, the noise in the use process is reduced, and the use comfort is improved.

Optionally, the positioning column 11 passes through the positioning column connecting through hole of the connecting plate 8 to be connected with the plate a 5.

Optionally, the upper surface of the limiting block 10 is provided with a clamping tenon 14 groove, bolt connecting holes are formed in two sides of the clamping tenon 14 groove, one end of the clamping tenon 14 is embedded into the clamping tenon 14 groove of the limiting block 10, the other end of the clamping tenon is embedded into the corresponding clamping tenon groove at the lower end of the plate d12, and the connecting bolt penetrates through the connecting through hole of the plate d12 and is screwed into the bolt connecting hole of the limiting block 10.

Optionally, movable assembly 2 all arranges the below of carrier assembly 3 in, connecting plate 8 connects reference column 11 one side and is close to the beam-ends face and arranges, it arranges to keep away from the beam-ends face to connect dog one side, can make mounting groove beam-ends face department reserve sufficient space, avoid the end concrete to lead to the fact structural damage in the long-term atress repeatedly in the use, sufficient length and beam-ends changeover portion overlap joint can be reserved to board c7, external load is when the beam-ends changeover portion, but the sufficient overlap joint length uniform transfer load of beam-ends changeover portion reaches the roof beam body, avoid the beam-ends concrete to break. When later stage movable assembly 2 needs to maintain, only need unpack carrier assembly 3, alright convenient quick implementation maintenance work.

Optionally, the contact position of the limiting block 10 and the connecting plate 8 is arranged coaxially and tangentially with the same diameter.

The application provides a bridge telescoping device, the installation as follows: the embedded component 1 is installed and leveled and positioned after the groove is opened, the movable component 2, the elastic pre-pulling piece 4 and the bearing component 3 are sequentially installed after the groove is opened, the embedded component 1, the movable component 2 and the bearing component 3 are in modular design, the height consistency of installation in engineering application is really realized, and the construction efficiency and the installation quality are greatly improved.

The bridge expansion device provided by the application has the advantages that the embedded component 1, the movable component 2 and the bearing component 3 are integrated into a whole, the modular assembly design is adopted, the production, the transportation, the installation and the later maintenance are convenient, the elastic pre-pulling piece 4 is connected with the movable component 2 and the bearing component 3, the bearing component 3 is ensured to be always tightly attached to a beam body in the using process, the safety accident caused by the tilting of the tooth end is avoided, the concrete at the beam end is protected from being frequently rolled, meanwhile, the rigid vibration frequency of the structure of the telescopic device is reduced, the service life of the telescopic device is prolonged, one end of the positioning column is arranged at one side close to the beam end, enough space can be reserved on the same side of the mounting groove, structural damage caused by long-term repeated stress of end face concrete in the using process is avoided, the modular installation really realizes the high consistency of installation in engineering application, and the construction efficiency and the installation quality are greatly improved.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It is to be understood that the present application is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. The utility model provides a bridge telescoping device, its characterized in that includes pre-buried subassembly, movable assembly, carrier assembly and elasticity pretension piece, movable assembly one side is connected with pre-buried subassembly, and the opposite side is connected with carrier assembly, set up elasticity pretension piece between carrier assembly and the movable assembly.

2. The bridge expansion device of claim 1, wherein the embedded assembly comprises a plate a, a plate b and a plate c, the bottom surface of the plate b is connected with the plate a, and the top surface of the plate b is connected with the plate c.

3. The bridge expansion device according to claim 2, wherein the movable assembly comprises a connecting plate, stoppers, limiting blocks and positioning columns, one side of the connecting plate is connected with the stoppers, the other side of the connecting plate is connected with the positioning columns, the stoppers and the limiting blocks are arranged on the connecting plate at intervals, and two adjacent stoppers are connected with the lower ends of the limiting blocks in the middle.

4. The bridge expansion device of claim 3, wherein said bearing assembly comprises a plate d and a plate e, one end of said plate d is connected to one end of said plate e to form a continuous bearing surface.

5. The bridge expansion device of claim 1, wherein the elastic pre-tension member is a material structure with elastic function and certain load-bearing performance.

6. A bridge expansion device according to claim 3, wherein said connection plate is connected to said plate a by said positioning posts.

7. The bridge expansion device of claim 4, wherein the upper end of the limiting block is connected to the plate d by a tenon.

8. The bridge expansion device of claim 1, wherein the movable assemblies are all arranged below the bearing assembly, one side of each movable assembly, which is connected with the embedded assembly, is arranged close to the end face of the beam, and one side of each movable assembly, which is connected with the bearing assembly, is arranged far away from the end face of the beam.

9. The bridge expansion device of claim 3, wherein the contact position of the limiting block and the connecting plate is arranged in a matching manner.

10. The bridge expansion device of claim 3, wherein the connection plate is further divided into a connection plate body and a bearing pad block, the bearing pad block is engaged with the position where the limiting block contacts, and a cushion pad is additionally arranged between the connection plate body and the bearing pad block.