New and old beam plate connecting device for reconstruction and extension of expressway

Abstract

The utility model discloses an expressway reconstruction and expansion new and old beam plate connecting device, which is arranged between two beam plates in clearance fit, and comprises two oppositely arranged mounting boxes, the two mounting boxes are respectively and fixedly connected with the two beam plates, and a plurality of buffer units are connected between the two mounting boxes in a sliding manner. The two ends of the buffer units are fixedly connected with the side walls of the beam plates correspondingly, arc plates are fixedly connected to the top ends of the opposite side faces of the two mounting boxes correspondingly, and cover plates are matched with the top faces of the arc plates. A plurality of sets of inclined supporting assemblies are rotationally connected between the arc plate and the side face, not connected with the arc plate, of the mounting box, and the inclined supporting assemblies and the buffering units are arranged at intervals. The deformation recovery rate of the beam plate is buffered, and the safety of the beam plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge connection, in particular to a new and old beam-slab connection device for reconstruction and expansion of expressways. Background Art

[0002] In the widening of bridges at home and abroad, the changes in internal forces and deflections caused by the difference in foundation settlement between the new and old bridges after widening are mainly considered. Usually, the upper structure type consistent with the original bridge structure is adopted to coordinate the new and old parts after the transformation to form a harmonious whole. At present, there have been successful examples of highway widening at home and abroad. The research on the splicing and widening of bridges will cause differences in actual treatment plans due to differences in geological conditions, structural forms, actual traffic volumes, etc. of various highways. Among them, the upper structure and the lower structure are not connected, that is, the new and old bridges are not connected, and they are independently stressed. The structural form is that the lower piers of the widened part of the bridge are not connected to the old bridge, and the upper beam and slab part is not connected. There is a working joint between the new and old structures, and the asphalt concrete pavement layer of the bridge deck is continuously paved. It is necessary to build a connecting device between the two.

[0003] The prior art (Chinese patent number: CN217127988U) discloses a connection device that can optimize the connection mode of the connection device and provide a shock absorbing function by using a shock absorbing component. However, during the shock absorbing process, it cannot buffer the recovery rate of the lateral force of the beam and slab, which will cause the beam and slab to shake for a long time, thus posing a hidden danger to its safety. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes a new and old beam-slab connection device for highway reconstruction and expansion, which buffers the rate of beam-slab deformation recovery and improves the safety of the beam-slab.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] A device for connecting old and new beams and slabs for reconstruction and expansion of a highway is arranged between two gap-fitted beams and slabs, comprising two installation boxes arranged opposite to each other, the two installation boxes are fixedly connected to the two beams and slabs respectively, a plurality of buffer units are slidably connected between the two installation boxes, the two ends of the buffer units are fixedly connected to the side walls of the beams and slabs respectively, the top ends of the opposite sides of the two installation boxes are fixedly connected to arc plates respectively, and the top surfaces of the arc plates are adapted to be covered; an oblique support assembly is rotatably connected between the arc plate and the side of the installation box to which it is not connected, the oblique support assembly is provided in a plurality of groups, and the oblique support assembly is spaced apart from the buffer units.

[0007] Preferably, the buffer unit includes two sleeves, one end of the sleeve passes through the installation box and is slidably connected thereto, and one end of the sleeve is detachably connected to the side of the beam plate; a sliding hole is provided at the end of the sleeve away from the installation box, springs are fixedly connected in the two sliding holes, a buffer rod is passed through the inner cavity of the spring, one end of the buffer rod is fixedly connected to a fixed disk, and the side of the fixed disk and the other end of the buffer rod are respectively fixedly connected to the side wall of the inner cavity of the spring.

[0008] Preferably, the oblique support assembly includes two support rods, and the two ends of the support rods are rotatably connected to the bottom surface of the arc plate and the side surface of the installation box respectively; the support rods are made of arc-shaped spring steel.

[0009] Preferably, the installation box is a box-like structure with one side open or a frame structure of steel bars.

[0010] Preferably, the arc plate includes a plurality of panels, adjacent panels are fixedly connected, the bottom surface of the panels are rotatably connected to one end of the support rod; the top surface of the panels abuts against the bottom surface of the cover plate.

[0011] Preferably, the cover plate is made of rubber, and both ends of the top surface of the cover plate are respectively rounded, and the top surface of the cover plate extends out of the top surface of the beam plate by 1.5mm-2.5mm.

[0012] Compared with the prior art, the utility model has the following advantages and technical effects:

[0013] The utility model utilizes an installation box to be fixedly installed on the side of the beam plate, which is convenient for sliding with the buffer unit and can also facilitate the installation of the buffer unit and the oblique support assembly.

[0014] The buffer unit of the utility model can connect and offset the lateral forces of the two beam plates to each other, support each other, and reduce the stability of two adjacent bridge roads that are not connected to each other.

[0015] The arc plate and cover plate of the utility model can fill the joint seam between the two beam plates and have a certain amount of bulge, which can not only compensate for the settlement caused by the sinking of the arc plate, but also reduce the bump intensity of the vehicle crossing the two beam plates, thereby improving the comfort of the road surface.

[0016] The buffer unit of the utility model can not only absorb the lateral force of the beam slab, but also buffer the recovery rate of the restoring force of the beam slab, thereby preventing the beam slab from recovering violently and causing damage to the bridge and highway. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a side view of the structure of the utility model;

[0019] Figure 2 is a schematic diagram of the side structure of the buffer unit;

[0020] Figure 3 This is a side view of the utility model, in which the arc plate is a plurality of panel structures;

[0021] Among them, 1. beam plate; 2. installation box; 3. arc plate; 4. cover plate; 5. sleeve; 6. sliding hole; 7. spring; 8. buffer rod; 9. fixing plate; 10. support rod; 11. puzzle board. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that all components in the technical solution of this application require the necessary additional facilities of water supply, oil supply, electricity supply and gas supply to be driven and / or controlled. If there is no further explanation, it is assumed that the existing technology is used and equipped without special explanation.

[0024] It should be noted that, in order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Depend on Figure 1 The device for connecting old and new beams and slabs 1 for reconstruction and expansion of a highway shown in the figure is arranged between two beams and slabs 1 with clearance fit, and comprises two installation boxes 2 arranged opposite to each other, the two installation boxes 2 are fixedly connected to the two beams and slabs 1 respectively, a plurality of buffer units are slidably connected between the two installation boxes 2, the two ends of the buffer units are fixedly connected to the side walls of the beams and slabs 1 respectively, the top ends of the opposite sides of the two installation boxes 2 are fixedly connected to arc plates 3 respectively, and the top surfaces of the arc plates 3 are adapted to be equipped with cover plates 4; an oblique support assembly is rotatably connected between the arc plate 3 and the side of the installation box 2 to which it is not connected, a plurality of groups of the oblique support assemblies are arranged, and the oblique support assemblies are spaced apart from the buffer units.

[0026] Furthermore, the arc plate 3 is an integral arc plate structure, and two arc plates 3 are arranged opposite to each other with a gap therebetween to facilitate lateral swinging of adjacent beam plates 1 .

[0027] The utility model utilizes the installation box 2 to be fixedly installed on the side of the beam slab 1, which is convenient for sliding with the buffer unit, and can also facilitate the installation of the buffer unit and the oblique support assembly. At the same time, the buffer unit can connect and offset the lateral forces of the two beam slabs 1 with each other, support each other, and reduce the stability of two adjacent bridge roads that are not connected to each other. At the same time, the arc plate 3 and the cover plate 4 can fill the joint seam between the two beam slabs 1, and there is a certain amount of bulge, which can not only make up for the settlement caused by the sinking of the arc plate 3, but also reduce the bump strength of the vehicle crossing the two beam slabs 1, thereby improving the comfort of the road surface.

[0028] To further optimize the solution, Figure 2 As shown, fixing holes are respectively provided on the opposite sides of the beam plate 1, and the buffer unit includes two sleeves 5, one end of the sleeve 5 passes through the mounting box 2 and is slidably connected thereto, and one end of the sleeve 5 is detachably connected to the fixing hole on the side of the beam plate 1; a sliding hole 6 is provided on the end of the sleeve 5 away from the mounting box 2, and a spring 7 is fixedly connected in the two sliding holes 6, a buffer rod 8 is passed through the inner cavity of the spring 7, and a fixing plate 9 is fixedly connected to one end of the buffer rod 8, and the side surface of the fixing plate 9 and the other end of the buffer rod 8 are respectively fixedly connected to the side wall of the inner cavity of the spring 7, and the buffer rod 8 and the fixing plate 9 fixedly installed on one end of the piston rod thereof are fixedly installed in the inner cavity of the spring 7, so as to cooperate with the spring 7, so that the spring 7 can act to buffer the lateral force of the beam plate 1, and the buffer rod 8 can also act to eliminate the elastic force of the spring 7.

[0029] Furthermore, the buffer rod 8 is an existing hydraulic buffer, which can absorb the elastic force exerted on the spring 7 and reduce the recovery rate of the elastic force, that is, reduce the intensity of the shaking of the beam 1. It is a prior art and will not be described in detail here.

[0030] A further optimized solution is that the oblique support assembly includes two support rods 10, and the two ends of the support rods 10 are rotatably connected to the bottom surface of the arc plate 3 and the side surface of the installation box 2 respectively; the support rods 10 are made of arc-shaped spring steel, and the support rods 10 can transfer the pressure exerted on the beam plate 1 or the arc plate 3 to the beam plate 1 on the other side, and use the two beam plates 1 to support each other, thereby reducing the pressure exerted on one beam plate 1.

[0031] According to a further optimization scheme, the installation box 2 is a box-shaped structure with one side open or a frame structure of steel bars, which is convenient for fixing to the beam 1 and also for reducing the weight of the installation box 2.

[0032] To further optimize the solution, Figure 3 As shown, the arc plate 3 includes a plurality of panels 11, adjacent panels 11 are fixedly connected, and the bottom surface of the panel 11 is rotatably connected to one end of the support rod 10; the top surface of the panel 11 is abutted against the bottom surface of the cover plate 4, and the arc plate 3 is a lap structure composed of a plurality of panels 11, which facilitates flexible adjustment of the gap between the arc plates 3.

[0033] A further optimization solution is that the cover plate 4 is made of rubber, and both ends of the top surface of the cover plate 4 are rounded. The top surface of the cover plate 4 extends 1.5mm-2.5mm beyond the top surface of the beam plate 1, which can not only make up for the drop of the settlement of the cover plate 4, but also reduce the ups and downs strength of the vehicle during driving.

[0034] The working process of this embodiment is as follows:

[0035] The utility model is installed between the beams 1 of two adjacent highways. When one of the beams 1 deviates to the side of the other beam 1 due to eccentric loading, the arc plate 3 will deviate to one side along with the installation box 2, and the support rod 10 connected to the bottom end of the arc plate 3 is simultaneously abutted by the arc plate 3, and then abuts against the side of the other installation box 2, and then the lateral force of one beam 1 is absorbed through the elastic deformation of the support rod 10.

[0036] During the deformation of the support rod 10, the beam 1 collides with one end of the sleeve 5 that it abuts against, and the sleeve 5 squeezes the spring 7 and the buffer rod 8. At the same time, the other sleeve 5 collide with the other beam 1 and absorbs the lateral force of the beam 1. The spring 7 recovers when the lateral force of the beam 1 disappears. In order to avoid an excessively drastic recovery rate of the beam 1, thereby damaging the highway beam 1, the buffer rod 8 can absorb the recovery force of the spring 7 at the same time, thereby reducing the recovery rate of the spring 7.

[0037] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A device for connecting new and old beams and slabs (1) for reconstruction and expansion of a highway, arranged between two beams and slabs (1) with clearance fit, characterized in that: The invention comprises two installation boxes (2) arranged opposite to each other, the two installation boxes (2) are fixedly connected to the two beam plates (1) respectively, a plurality of buffer units are slidably connected between the two installation boxes (2), the two ends of the buffer units are fixedly connected to the side walls of the beam plates (1) respectively, the top ends of the opposite side surfaces of the two installation boxes (2) are fixedly connected to arc plates (3), the top surfaces of the arc plates (3) are adapted to be equipped with cover plates (4); an oblique support assembly is rotatably connected between the arc plates (3) and the side surfaces of the installation boxes (2) not connected thereto, the oblique support assembly is provided in a plurality of groups, and the oblique support assembly is spaced apart from the buffer units.

2. A device for connecting new and old beams and slabs (1) for reconstruction and expansion of a highway according to claim 1, characterized in that: The buffer unit comprises two sleeves (5), one end of the sleeve (5) passes through the installation box (2) and is slidably connected thereto, and one end of the sleeve (5) is detachably connected to the side surface of the beam plate (1); a sliding hole (6) is provided at one end of the sleeve (5) away from the installation box (2), a spring (7) is fixedly connected in the two sliding holes (6), a buffer rod (8) is passed through the inner cavity of the spring (7), one end of the buffer rod (8) is fixedly connected to a fixed disk (9), and the side surface of the fixed disk (9) and the other end of the buffer rod (8) are respectively fixedly connected to the inner cavity side wall of the spring (7).

3. A device for connecting new and old beams and slabs (1) for reconstruction and expansion of a highway according to claim 1, characterized in that: The oblique support assembly comprises two support rods (10), the two ends of which are rotatably connected to the bottom surface of the arc plate (3) and the side surface of the installation box (2) respectively; the support rod (10) is made of arc-shaped spring steel.

4. A device for connecting new and old beams and slabs (1) for reconstruction and expansion of a highway according to claim 1, characterized in that: The installation box (2) is a box-shaped structure with one side open or a steel bar frame structure.

5. A device for connecting new and old beams and slabs (1) for reconstruction and expansion of a highway according to claim 3, characterized in that: The arc plate (3) comprises a plurality of panels (11), adjacent panels (11) are fixedly connected, the bottom surface of the panels (11) is rotatably connected to one end of the support rod (10); the top surface of the panels (11) is in contact with the bottom surface of the cover plate (4).

6. A device for connecting new and old beams and slabs (1) for reconstruction and expansion of a highway according to claim 1, characterized in that: The cover plate (4) is made of rubber, and both ends of the top surface of the cover plate (4) are rounded, and the top surface of the cover plate (4) protrudes from the top surface of the beam plate (1) by 1.5 mm to 2.5 mm.

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