Combined bridge expansion device and bridge

Abstract

The invention relates to the technical field of bridge construction, in particular to a combined type bridge expansion device and a bridge, the device comprises an elastic connecting piece, an elastic porous material component and a shell, the elastic porous material component is arranged in the shell, and the shell comprises two oppositely arranged side plates; the elastic porous material component is arranged in the shell, the elastic connecting piece is arranged in the elastic porous material component, the elastic connecting piece is longitudinally arranged along the side plate, the two ends of the elastic connecting piece can extend out of the elastic porous material component, and a hoisting hole is formed in the top surface of the shell; a plurality of the combined type bridge expansion devices are arranged at the expansion joint of a bridge, the elastic connecting pieces are arranged in the longitudinal bridge direction, the combined type bridge expansion devices are arranged in the transverse bridge direction of the bridge, and through the arrangement, the probability of deformation of the hoisting holes is reduced; and the reliability and the convenience degree of dismounting the combined bridge expansion device are improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a combined bridge expansion device and a bridge. Background Art

[0002] When the bridge is bearing weight, the bridge deck will be deformed due to the load. In order to allow vehicles to pass through the bridge deck smoothly and meet the needs of bridge deck deformation, it is usually necessary to install expansion devices at the expansion joints of the bridge deck. The bridge expansion devices must not only withstand the pulling force caused by the deformation of the bridge deck, but also withstand the pressure exerted by vehicles passing by. This leads to a high damage rate and a short service life of the bridge expansion devices.

[0003] Existing bridge expansion devices usually embed the connecting end in the bridge deck, and set an elastic connector between the two sections of the bridge deck. The connection between the elastic connector and the connecting end is provided with a slot and a pin that cooperate with each other. The two ends of the elastic connector are respectively connected to the connecting ends in the two sections of the bridge deck. Although this method is convenient for disassembly and assembly, the connection between the elastic connector and the connecting end will be continuously subjected to stress, which will cause deformation of the connection between the elastic connector and the connecting end over time. When the elastic connector needs to be replaced, it is difficult to remove the elastic connector. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art in that a card slot and a card pin are provided at the connection between the elastic connector and the connection end in the bridge expansion device, and the two ends of the elastic connector are respectively connected to the connection ends in the two sections of the bridge deck. The connection between the elastic connector and the connection end will be continuously subjected to force, which will cause the connection between the elastic connector and the connection end to deform over time. When the elastic connector needs to be replaced, it is difficult to remove the elastic connector. A combined bridge expansion device and a bridge are provided.

[0005] In a first aspect, the present invention provides a combined bridge expansion device, comprising an elastic connector, an elastic porous material component and a shell, wherein the elastic porous material component is arranged in the shell, and the shell comprises two oppositely arranged side plates, the elastic connector is arranged in the elastic porous material component, the elastic connector is arranged longitudinally along the side plates, both ends of the elastic connector can extend out of the elastic porous material component, and a lifting hole is provided on the top surface of the shell.

[0006] The combined bridge expansion device is arranged at the expansion joint between two adjacent bridge decks in the longitudinal direction of the bridge. Elastic porous material components extend from both ends of the elastic connector and are respectively used to connect with the corresponding bridge decks. The relative proximity or distance between the two corresponding bridge decks due to temperature, creep and other reasons can drive the elastic connector to stretch or compress, thereby causing the elastic connector to drive the elastic porous material component to stretch or compress, thereby achieving a buffering effect.

[0007] The elastic connector can be connected to the bridge deck via a steel section or via a connector pre-buried inside the bridge deck.

[0008] By installing the elastic porous material component in the shell, the corresponding two bridge decks drive the elastic connecting piece to stretch or compress, and then the elastic connecting piece drives the elastic porous material component to stretch or compress, thereby improving the buffering effect of the combined bridge expansion device; by arranging the elastic connecting piece in the elastic porous material component, the overall rigidity of the combined bridge expansion device is improved, so that the combined bridge expansion device has good stability when subjected to load, and the buffering effect of the combined bridge expansion device is also enhanced; the elastic porous material component also protects the elastic connecting piece and increases the service life of the elastic connecting piece; when the corresponding When the two bridge decks are close to or away from each other, the bridge decks can drive the elastic connector to extend or shorten along the longitudinal direction of the bridge. The stress on the combined bridge expansion device is transmitted through the elastic connector, while the shell where the lifting hole is located does not participate in bearing the stress, thereby reducing the probability of deformation of the lifting hole and improving the reliability of disassembly of the combined bridge expansion device. By providing a lifting hole on the top surface of the shell, when the combined bridge expansion device needs to be disassembled, the traction device can be connected to the lifting hole, and the combined bridge expansion device can be taken out from between the two bridge decks using the traction device, thereby improving the convenience of replacing the combined bridge expansion device.

[0009] The elastic connecting piece can be configured as a spring or a rubber column, etc., and the elastic porous material component can be configured as a polyurethane layer or a TST gravel elastomer, etc. Preferably, the elastic porous material component is configured as a polyurethane layer.

[0010] The elastic connecting piece extends out of the end of the elastic porous material component and is connected to the steel section, and the position of the lifting hole is replaced by being set on the steel section.

[0011] Through this arrangement, the steel section is connected to the bridge deck. When the two relatively arranged bridge decks move closer to or farther away from each other, the force applied to the steel section will be transmitted to the elastic connector, reducing the probability of local stress concentration. At the same time, the elastic connector is connected to the bridge deck through the steel section, avoiding direct connection between the elastic connector and the bridge deck, thereby improving the convenience of disassembling the combined bridge expansion device.

[0012] The hoisting hole can be arranged on the steel section or on the top surface of the shell.

[0013] The hoisting hole is provided with a dust cover.

[0014] By providing a dust cover, the probability of pollutants entering the lifting hole and causing the lifting hole to be blocked is reduced.

[0015] The elastic porous material component is provided with a plurality of deformation grooves, and the plurality of deformation grooves are used to buffer the stress on the elastic porous material component.

[0016] The deformation groove may be arranged on the top surface or the side surface of the elastic porous material component.

[0017] When subjected to external force, the deformation groove can undergo corresponding elastic deformation, allowing the elastic porous material component to withstand greater deformation, while reducing the probability of stress concentration in the elastic porous material component, thereby improving the deformation capacity and service life of the elastic porous material component.

[0018] The deformation groove is arranged transversely along the side plate or longitudinally along the side plate, and is preferably arranged transversely along the side plate.

[0019] In a second aspect, the present invention provides a bridge, wherein a plurality of combined bridge expansion devices are provided at the expansion joints of the bridge, wherein the elastic connectors are arranged along the longitudinal direction of the bridge, and the combined bridge expansion devices are arranged along the transverse direction of the bridge.

[0020] The combined bridge expansion device is fixedly connected to the bridge deck.

[0021] When the bridge comprises profiled steel, the elastic connector is fixedly connected to the bridge deck via the profiled steel.

[0022] Through this setting, the maintenance cost of the bridge is reduced and the safety and reliability of the bridge are improved.

[0023] The bridge also includes a pad, which is arranged at the expansion joint and is used to support the combined bridge expansion device.

[0024] By providing a pad, the pad can support the elastic porous material component. When the elastic porous material component is deformed, the pad can limit the elastic porous material component from deforming toward the pad, thereby improving the stress conduction effect of the elastic porous material component.

[0025] The bottom surface of the shell is a hollow structure, the elastic porous material component can be exposed from the shell and contact the pad, and the surface of the pad that contacts the elastic porous material component is provided with a smooth coating.

[0026] By setting a smooth coating, the friction between the pad and the elastic porous material component is reduced. When the elastic porous material component is subjected to stress, the probability of the elastic porous material component transmitting stress to the pad through the contact surface with the pad is reduced, thereby improving the stress transmission effect of the elastic porous material component.

[0027] The lubricious coating may be a Teflon coating or a PTFE coating.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention provides a combined bridge expansion device, which is provided with a lifting hole on the top surface of a shell. When two relatively arranged bridge panels approach or move away from each other, the bridge panels can drive the elastic connector to extend or shorten along the longitudinal direction of the bridge. The stress on the combined bridge expansion device is transmitted through the elastic connector, and the shell where the lifting hole is located does not participate in bearing the stress, thereby reducing the probability of deformation of the lifting hole and improving the reliability of disassembling the combined bridge expansion device. When the combined bridge expansion device needs to be disassembled, a traction device can be connected to the lifting hole, and the combined bridge expansion device can be taken out from between the two bridge panels using the traction device, thereby improving the convenience of replacing the combined bridge expansion device;

[0030] 2. The present invention provides a bridge, wherein a plurality of the combined bridge expansion devices are provided at the expansion joints of the bridge, wherein the elastic connectors can expand and contract along the longitudinal direction of the bridge, and the combined bridge expansion devices are arranged along the transverse direction of the bridge. This arrangement reduces the maintenance cost of the bridge and improves the safety and reliability of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a front view schematic diagram of the combined bridge expansion device of Example 1 provided by the present invention installed between bridge decks.

[0032] Figure 2 This is a top view schematic diagram of the combined bridge expansion device of Example 1 provided by the present invention.

[0033] Markings in the figure:

[0034] 1-elastic connector, 2-elastic porous material component, 3-bridge deck, 4-lifting hole, 5-pad, 6-deformation groove, 7-shell, 8-steel. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0036] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0038] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0039] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0040] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0041] Example 1

[0042] like Figure 1 and Figure 2 As shown, this embodiment provides a combined bridge expansion device, including an elastic connector 1, an elastic porous material component 2 and a shell 7, wherein the elastic porous material component 2 is arranged in the shell 7, and the shell 7 includes two oppositely arranged side plates, and the elastic connector 1 is arranged in the elastic porous material component 2, and the elastic connector 1 is arranged longitudinally along the side plates, and both ends of the elastic connector 1 can extend out of the elastic porous material component 2, and the ends of the elastic connector 1 extending out of the elastic porous material component 2 are connected to the steel section 8.

[0043] The combined bridge expansion device is arranged at the expansion joint between two adjacent bridge decks 3 in the longitudinal direction of the bridge. Elastic porous material components 2 extend from both ends of the elastic connector 1 and are respectively used to connect with the corresponding bridge decks 3. The relative proximity or distance between the two corresponding bridge decks 3 due to temperature, creep and other reasons can drive the elastic connector 1 to stretch or compress, thereby causing the elastic connector 1 to drive the elastic porous material component 2 to stretch or compress, thereby achieving a buffering effect.

[0044] By installing the elastic porous material component 2 in the shell 7, the corresponding two bridge panels 3 drive the elastic connector 1 to stretch or compress, and then the elastic connector 1 drives the elastic porous material component 2 to stretch or compress, thereby improving the buffering effect of the combined bridge expansion device; by arranging the elastic connector 1 in the elastic porous material component 2, the overall rigidity of the combined bridge expansion device is improved, so that the combined bridge expansion device has good stability when subjected to load, and the buffering effect of the combined bridge expansion device is also enhanced; the elastic porous material component 2 also protects the elastic connector 1 and increases the service life of the elastic connector 1; when the two relatively arranged bridge panels 3 are close to or away from each other, the bridge panels 3 can bring The dynamic elastic connector 1 is extended or shortened along the longitudinal direction of the bridge, and the steel section 8 transmits the force applied to the elastic connector 1, which reduces the probability of local stress concentration, and further reduces the probability of deformation of the lifting hole 4. At the same time, the elastic connector 1 is connected to the bridge deck 3 through the steel section 8, avoiding the direct connection between the elastic connector 1 and the bridge deck 3, thereby improving the convenience of disassembling the combined bridge expansion device and improving the reliability of disassembling the combined bridge expansion device. By providing a lifting hole 4 on the top surface of the shell 7, when the combined bridge expansion device needs to be disassembled, the traction device can be connected to the lifting hole 4, and the combined bridge expansion device can be taken out from between the two bridge decks 3 using the traction device, thereby improving the convenience of replacing the combined bridge expansion device.

[0045] The elastic connecting member 1 is configured as a spring, and the elastic porous material component 2 is configured as a polyurethane layer.

[0046] The hanging hole 4 is provided with a dust cover.

[0047] By providing the dust cover, the probability of pollutants entering the hoisting hole 4 and causing the hoisting hole 4 to be blocked is reduced.

[0048] The elastic porous material component 2 is provided with a plurality of deformation grooves 6 , and the plurality of deformation grooves 6 are used to buffer the stress on the elastic porous material component 2 .

[0049] The deformation groove 6 is arranged on the top surface of the elastic porous material component 2 .

[0050] When subjected to external force, the deformation groove 6 can undergo corresponding elastic deformation, allowing the elastic porous material component 2 to withstand greater deformation, while reducing the probability of stress concentration in the elastic porous material component 2 and improving the deformation capacity and service life of the elastic porous material component 2.

[0051] The deformation groove 6 is arranged transversely along the side plate.

[0052] Example 2

[0053] This embodiment provides a bridge, wherein a plurality of combined bridge expansion devices are provided at the expansion joints of the bridge, wherein the elastic connector 1 is arranged along the longitudinal direction of the bridge, and the combined bridge expansion devices are arranged along the transverse direction of the bridge.

[0054] The elastic connector 1 is fixedly connected to the bridge deck 3 via a steel section 8 .

[0055] Through this setting, the maintenance cost of the bridge is reduced and the safety and reliability of the bridge are improved.

[0056] The bridge further comprises a pad 5, which is arranged at the expansion joint and is used to support the combined bridge expansion device.

[0057] By providing the pad 5, the pad 5 can support the elastic porous material component 2. When the elastic porous material component 2 is deformed, the pad 5 can limit the elastic porous material component 2 from deforming in the direction of the pad 5, thereby improving the stress conduction effect of the elastic porous material component 2.

[0058] The bottom surface of the shell 7 is a hollow structure, and the elastic porous material component 2 can be exposed from the shell 7 and contact the pad 5. The surface of the pad 5 that contacts the elastic porous material component 2 is provided with a smooth coating.

[0059] By setting a smooth coating, the friction between the pad 5 and the elastic porous material component 2 is reduced. When the elastic porous material component 2 is subjected to stress, the probability of the elastic porous material component 2 transmitting stress to the pad 5 through the contact surface with the pad 5 is reduced, thereby improving the elastic porous material component 2's stress transmission effect.

[0060] The smooth coating is configured as a Teflon coating.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined bridge expansion device, characterized in that: The invention comprises an elastic connecting member (1), an elastic porous material component (2) and a shell (7), wherein the elastic porous material component (2) is arranged in the shell (7), and the shell (7) comprises two side plates arranged opposite to each other, the elastic connecting member (1) is arranged in the elastic porous material component (2), the elastic connecting member (1) is arranged longitudinally along the side plates, and both ends of the elastic connecting member (1) can extend out of the elastic porous material component (2), and a lifting hole (4) is provided on the top surface of the shell (7).

2. A combined bridge expansion device according to claim 1, characterized in that: The elastic connecting member (1) extends out of the end of the elastic porous material component (2) and is connected to the profiled steel (8), and the position of the hanging hole (4) is replaced by being arranged on the profiled steel (8).

3. The combined bridge expansion device according to claim 1, characterized in that: The hanging hole (4) is provided with a dust cover.

4. The combined bridge expansion device according to claim 1, characterized in that: The elastic connecting piece (1) is a spring, and the elastic porous material component (2) is a polyurethane layer.

5. A combined bridge expansion device according to any one of claims 1 to 4, characterized in that: The elastic porous material component (2) is provided with a plurality of deformation grooves (6), and the plurality of deformation grooves (6) are used to buffer the stress to which the elastic porous material component (2) is subjected.

6. The combined bridge expansion device according to claim 5, characterized in that: The deformation groove (6) is arranged transversely along the side plate.

7. A bridge, characterized in that: Several combined bridge expansion devices as described in any one of claims 1 to 6 are provided at the expansion joints of the bridge, the elastic connectors (1) are arranged along the longitudinal direction of the bridge, and the combined bridge expansion devices are arranged along the transverse direction of the bridge.

8. A bridge according to claim 7, characterized in that: The combined bridge expansion device is fixedly connected to the bridge deck.

9. The bridge according to claim 7, characterized in that: It also comprises a pad (5), wherein the pad (5) is arranged at the expansion joint, and the pad (5) is used to support the combined bridge expansion device.

10. A bridge according to claim 9, characterized in that: The bottom surface of the shell (7) is a hollow structure, the elastic porous material component (2) can be exposed from the shell (7) and contact the pad (5), and the surface of the pad (5) in contact with the elastic porous material component (2) is provided with a smooth coating.

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