A bridge expansion joint device and installation method thereof

Abstract

A bridge expansion joint device and an installation method thereof, the bridge expansion joint device comprises a first beam body, a second beam body and a telescopic assembly, an installation slot for installing the telescopic assembly is opened at the beam end of the first beam body and the beam end of the second beam body, an embedded fixing is pre-embedded at the bottom of the installation slot, a height adjustment assembly fixed to the embedded fixing is installed in the installation slot, and the telescopic assembly is fixed on the height adjustment assembly. The advantages of the present invention are: the bridge expansion joint device can adjust the installation height of the telescopic device through the height adjustment assembly, during installation, the installation height of the telescopic device can be adjusted instantly on site through the height adjustment assembly according to the actual size of the installation slot depth, so as to achieve the flatness requirements of the telescopic device and the bridge road surface, and the use of a concrete-free bridge expansion joint device can eliminate the concrete transition section structure, saving the time required for the construction and curing of the concrete transition section during the installation of the telescopic device, thereby achieving rapid installation.

Description

Technical Field

[0001] The invention relates to the technical field of expansion joints of bridge engineering, and in particular to a bridge expansion joint device and an installation method thereof. Background Art

[0002] In order to meet the needs of bridge beam deformation, bridge expansion joint devices are generally installed between the two ends of the bridge beam, between the beam end and the abutment, or at the hinged position of the bridge. In the existing bridge expansion joint devices, the "paving first and then installing" method is basically adopted, that is, after the bridge pavement is completed, the installation slot of the expansion joint device is dug out and the expansion joint device is installed. Figure 8 and Fig. 9 As shown, when the beam body 1a is manufactured, a groove for installing the telescopic device 2a is reserved at the end of the beam body, and a steel bar 3a is embedded in the reserved groove. When the telescopic device 2a is installed on site, first, the installation groove of the telescopic device is completely covered when the asphalt layer 5a is paved on the bridge deck, and then the installation groove is cut, dug and cleaned according to the installation width requirement of the telescopic device, and the telescopic device 2a is fixed to the embedded steel bar 3a. Finally, the transition section concrete 4a is poured in the reserved groove and the concrete is cured. The bridge can be opened to traffic only after the concrete curing is completed.

[0003] The above existing bridge expansion joint device has the following defects: before the expansion device is installed, the installation notch area, embedded steel bars, etc. on the beam body need to be processed before the expansion device is installed, and the construction time is relatively long. The structural dimensions of the installation groove area reserved on the beam body in the early stage and the layout position of the embedded parts may not meet the installation requirements of the expansion device due to construction errors and other reasons, and the expansion device cannot be adjusted accordingly according to the actual groove area size on site, which will seriously affect the installation quality of the expansion device. In addition, in many bridge projects now, especially urban viaducts and various cross-line bridges, there is a need for traffic under the bridge. If the road is closed, there are also time control requirements. In this case, the construction time left for the expansion device is very tight, which will have an adverse effect on the construction period and product quality. In addition, due to the different rigidity of asphalt and concrete, asphalt is flexible and concrete is rigid, so the expansion joint device is prone to asphalt sag after long-term use. Once the asphalt is sag, it is easy to cause the concrete to break, and then damage the expansion joint device, thereby reducing the smoothness and comfort of the vehicle passing through the bridge expansion joint, and even affecting the safety of driving. In summary, there is a need to improve the existing bridge expansion joint device. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a bridge expansion joint device that can adjust the height of the telescopic component and realize quick installation and replacement in response to the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide an installation method for a bridge expansion joint device which is convenient to construct and can be quickly installed in response to the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the bridge expansion joint device includes a first beam body, a second beam body and a telescopic assembly, and is characterized in that: an installation groove for installing the telescopic assembly is opened at the beam end of the first beam body and the beam end of the second beam body, an embedded fixing part is embedded at the bottom of the installation groove, and a height adjustment assembly fixed to the embedded fixing part is installed in the installation groove, and the telescopic assembly is fixed on the height adjustment assembly.

[0007] The telescopic component can have a variety of installation structures. Preferably, the telescopic component includes a first telescopic plate, a second telescopic plate, a first support rib and a second support rib. The first support rib is fixed to the outer side of the bottom of the first telescopic plate, and the second support rib is fixed to the outer side of the bottom of the second telescopic plate. The first support rib and the second support rib are fixed on the height adjustment component corresponding to the installation slot.

[0008] The height adjustment component can have a variety of structures. Preferably, the height adjustment component includes a height adjustment plate and ribs. The height adjustment plates are spaced apart along the length direction of the installation slots. The height adjustment plate is provided with corresponding rib holes. The ribs pass through the rib holes and are fixed to the height adjustment plate.

[0009] In order to prevent the telescopic device from being directly impacted by the vehicle, an anti-collision baffle is welded on the outer side of the height adjustment plate, and the anti-collision baffle is flush with the bridge road surface. The anti-collision baffle is directly welded on site, which can simplify the construction and achieve rapid installation. The anti-collision baffle can be made of steel plate and can be adjusted in height according to the actual installation size requirements.

[0010] Preferably, the height adjustment plate is L-shaped and has a horizontal support step formed on the inner side of the middle portion, the bottom of the height adjustment plate is welded and fixed to the embedded fixing member, and the first support rib plate and the second support rib plate are supported on the corresponding horizontal support step and are welded and fixed to the height adjustment plate. In addition, in addition to the L-shape, the height adjustment plate can also be T-shaped or other different shapes.

[0011] In order to reduce the noise generated when a vehicle passes through the expansion joint device, a noise reduction component is provided below the first telescopic plate and the second telescopic plate, and the lower and upper parts of the inner side of the first supporting rib plate and the lower and upper parts of the inner side of the second supporting rib plate are respectively welded with support strips and baffles, the noise reduction component is supported on the support strips, and the baffle cover is provided on the noise reduction component.

[0012] The waterstop can have a variety of installation structures. Preferably, a waterstop is installed below the noise reduction component, and a waterstop bracket extends inwardly from the height adjustment component. Both ends of the waterstop are installed on the waterstop bracket.

[0013] The embedded fixings in the beam body can have various structures. Preferably, the embedded fixings are embedded steel plates, which are fixed to the corresponding beam body by shear nails. The structural dimensions of the embedded steel plates can be specially designed according to the design load requirements of bridge vehicles.

[0014] In order to improve the anchoring strength between the embedded steel plate and the beam body, there are at least two rows of shear nails.

[0015] Further preferably, the installation slots are all cast with fillers, the height of which is slightly lower than the height of the bridge pavement and the telescopic device. The fillers can be concrete, asphalt or other materials.

[0016] Further preferably, a bridge deck pavement layer is laid on the outer side of the anti-collision baffle, and the bridge deck pavement layer is flush with the anti-collision baffle. The bridge deck pavement layer can be made of a variety of paving materials, such as asphalt, concrete, epoxy resin, etc.

[0017] The technical solution adopted by the present invention to solve the above second technical problem is that the installation method of the bridge expansion joint device is characterized by comprising the following steps:

[0018] S1. Dig and clean the installation slot, and measure the depth of the installation slot;

[0019] S2. According to the notch depth measured in step S1, the height adjustment component is processed accordingly, and the adjusted height adjustment component is welded to the embedded steel plate;

[0020] S3. Install water stop and formwork for pouring;

[0021] S4. Adjust the position of the telescopic assembly in the longitudinal and transverse directions of the bridge and the flatness of the bridge road surface, and weld and fix the telescopic assembly to the height adjustment assembly;

[0022] S5. Weld and fix the anti-collision baffle on the outside of the height adjustment assembly, and make the upper surface of the anti-collision baffle flush with the bridge road surface;

[0023] S6. Clean the weld and notch, and pour the filler into the notch.

[0024] Compared with the prior art, the advantages of the present invention are: the installation height of the expansion joint device of the bridge can be adjusted by a height-adjusting component. During installation, the installation height of the expansion joint device can be instantly adjusted on site by a height-adjusting component according to the actual size of the installation slot depth to achieve the flatness requirement of the expansion joint device and the bridge pavement. In addition, the use of a concrete-free bridge expansion joint device can eliminate the concrete transition section structure, saving the time required for the construction and curing of the concrete transition section during the installation of the expansion joint device, thereby achieving rapid installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 2 It is a structural cross-sectional view of Embodiment 1 of the present invention;

[0027] Figure 3 is another structural cross-sectional view of the first embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the height adjustment plate according to the first embodiment of the present invention;

[0029] Figure 5 It is a structural cross-sectional view of the second embodiment of the present invention;

[0030] Figure 6 It is a structural cross-sectional view of the third embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of another height adjustment plate used in the present invention;

[0032] Figure 8 It is a cross-sectional view of the installation structure of an existing bridge expansion joint device;

[0033] Fig. 9 It is a cross-sectional view of the installation structure of another existing bridge expansion joint device; DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings.

[0035] Embodiment 1:

[0036] like Figures 1 to 4As shown, this embodiment adopts a concrete-free bridge expansion joint device, which includes main components such as a first beam body 1, a second beam body 2, a telescopic component 4, a height adjustment component 5, an anti-collision baffle 6 and a noise reduction component 7. An installation slot 3 is opened at the beam end of the first beam body 1 and the beam end of the second beam body 2, and an embedded steel plate 12 is pre-embedded at the bottom of the installation slot 3. The embedded steel plate 12 is fixed to the corresponding beam body through a shear nail 13. The embedded steel plate 12 is arranged along the width of the bridge deck, which is convenient for the installation and positioning of the telescopic device on site, more conducive to ensuring the welding strength, and reducing the installation construction time. The structural dimensions of the embedded steel plate 12 can be specially designed according to the design load requirements of the bridge vehicle, such as for the passage of heavy-loaded vehicles, a higher design bearing capacity, a thickened embedded steel plate 12 and a strengthened connecting shear nail 13 are required. In this embodiment, each beam body is provided with two rows of shear nails 13, and the arrangement spacing of the shear nails 13 in the length direction of the installation slot 3 is set in combination with the arrangement spacing of the beam body steel bars, and is not greater than 150 mm, so as to improve the anchoring strength between the embedded steel plate 12 and the beam body. In addition, in addition to the embedded steel plate 12, other embedded fixings such as embedded steel bars can also be used as the embedded fixings, but the anchoring strength of the embedded steel bars is relatively poor.

[0037] Each mounting slot 3 is equipped with a height adjustment component 5. The height adjustment component 5 includes a height adjustment plate 51 and a through rib 52. The height adjustment plate 51 is spaced along the length direction of the mounting slot 3. The height adjustment plate 51 is provided with corresponding through rib holes 511. The through rib 52 passes through the through rib holes 511 and is fixed to the height adjustment plate 51. The bottom of the height adjustment plate 51 is welded and fixed to the embedded steel plate 12.

[0038] The telescopic assembly 4 of this embodiment includes a first telescopic plate 41, a second telescopic plate 42, a first supporting rib 43 and a second supporting rib 44, wherein the first supporting rib 43 is fixed to the outer side of the bottom of the first telescopic plate 41, and the second supporting rib 44 is fixed to the outer side of the bottom of the second telescopic plate 42.

[0039] The support ribs and the telescopic plates are preferably formed by integral rolling, which can improve the overall strength and rigidity of the product and avoid the errors and defects caused by processing and manufacturing when the two parts are connected, as well as the safety hazards caused by rust at the welding parts during the later use. In addition, the support ribs and the telescopic plates can also be fixed by welding.

[0040] like Figure 2 and Figure 4 As shown, the height adjusting plate 51 is L-shaped and has a horizontal supporting step 512 formed on the inner side of the middle portion. The first supporting rib 43 and the second supporting rib 44 are supported on the horizontal supporting step 512 of the corresponding height adjusting component 5 and are welded and fixed to the height adjusting plate 51. In this way, the telescopic component 4 is fixed on the height adjusting component 5.

[0041] like Figure 7As shown, the height adjustment plate 51 is T-shaped, and has rib holes 511 on the height adjustment plate 51. The height adjustment plate 51 is not limited to L-shaped and T-shaped, and other different shapes can also be used.

[0042] As can be seen from the above installation structure, the telescopic assembly 4 of this embodiment is directly welded and fixed on the embedded steel plate 12 through the height adjustment assembly 5, which reduces the intermediate connection links and reduces the time consumption. In addition, the height adjustment assembly 5 can be timely manufactured, adjusted, and positioned according to the actual depth requirements of the installation notch 3 at the construction site, and the layout spacing can also be adjusted arbitrarily. A fully automatic manipulator can be used for operation, realizing automated and intelligent welding, improving the on-site welding accuracy, improving the construction quality of the telescopic device, reducing the installation time of the telescopic device, and ensuring the impact resistance and durability of the product.

[0043] The anti-collision baffle 6 is arranged on the outside of the height adjustment component 5. In this embodiment, the anti-collision baffle 6 is welded and fixed to the outer side of the height adjustment plate 51, and the anti-collision baffle 6 is flush with the bridge pavement 17, the first telescopic plate 41 and the second telescopic plate 42. The anti-collision baffle 6 is directly welded on site, which reduces the time required for the construction and curing of the concrete transition section, shortens the time for on-site installation or later maintenance and replacement of the telescopic device, simplifies the construction, and realizes rapid installation. After the anti-collision baffle 6 is set, on the one hand, the telescopic component 4 can be prevented from being damaged by external forces, and on the other hand, the installation structure of the height adjustment component 5 is made more solid, thereby improving the structural firmness of the telescopic device. In addition, the anti-collision baffle 6 can also be directly welded and fixed on the embedded steel plate 12.

[0044] The noise reduction component 7 is arranged below the first telescopic plate 41 and the second telescopic plate 42. The specific installation structure is as follows: the lower and upper parts of the inner side of the first supporting rib 43 and the lower and upper parts of the inner side of the second supporting rib 44 are respectively welded with support bars 8 and baffles 9, the noise reduction component 7 is supported on the support bars 8, and the baffles 9 are arranged above the noise reduction component 7. The support bars 8 support the noise reduction component 7, and the baffles 9 are usually made of stainless steel, which can prevent debris on the bridge deck from falling onto the noise reduction component 7 through the gap between the first telescopic plate 41 and the second telescopic plate 42, so as to damage the noise reduction component 7. The noise reduction component 7 is preferably made of foam.

[0045] A water stop 10 is installed below the noise reduction component 7. In this embodiment, a water stop bracket 11 extends inwardly from the height adjustment component 5, and both ends of the water stop 10 are installed on the water stop bracket 11. The top of the water stop 10 is against the bottom of the noise reduction component 7 through a gasket 16.

[0046] In order to further reinforce the telescopic assembly, a filling piece 15 needs to be poured in the installation slot 3. The filling piece 15 can be concrete, asphalt, or other new paving materials such as ECO modified polyurethane concrete. Before pouring the filling piece 15, a pouring template 14 needs to be installed on the inner side of the beam body.

[0047] In addition, the length of the telescopic assembly 4 of the telescopic device of this embodiment is manufactured and installed in sections according to the lane width or other arbitrary widths, which is convenient for subsequent section maintenance or replacement.

[0048] The installation method of the non-concrete bridge expansion joint device of this embodiment comprises the following steps:

[0049] S1, dig and clean the installation slot 3, and measure the depth of the installation slot 3;

[0050] S2, according to the notch depth measured in step S1, the height adjustment component 5 is processed accordingly, and the adjusted height adjustment component is welded to the embedded steel plate 12;

[0051] S3, installing the water stop 10 and the formwork 14 for pouring;

[0052] S4, adjusting the position of the telescopic component 4 in the longitudinal and transverse directions of the bridge and the flatness with respect to the bridge pavement 17, and welding and fixing the telescopic component 4 to the height adjustment component 5;

[0053] S5, welding and fixing the anti-collision baffle 6 on the outer side of the height adjustment component 5, and making the upper surface of the anti-collision baffle 6 flush with the bridge road surface 17;

[0054] S6, cleaning the weld and the notch, and pouring the filling piece 15 into the notch.

[0055] Embodiment 2:

[0056] like Figure 5 As shown, compared with the first embodiment, the expansion joint device of this embodiment has a triangular rib plate 18 welded between the first telescopic plate 41 and the first supporting rib plate 43, and a triangular rib plate 18 is also welded between the second telescopic plate 42 and the first supporting rib plate 44, thereby improving the overall structural strength of the telescopic assembly 4. The rest of the structure of this embodiment is the same as that of the first embodiment, and will not be described in detail here.

[0057] Embodiment three:

[0058] like Figure 6 As shown, compared with the second embodiment, the expansion joint device of this embodiment cancels the anti-collision baffle, and casts the transition section 19 on the outside of the telescopic component 4, usually using a concrete transition section, that is, the expansion joint device adopts a concrete structure. The rest of the structure of this embodiment is the same as that of the second embodiment, and will not be described in detail here.

Claims

1. A bridge expansion joint device, comprising a first beam body (1), a second beam body (2) and a telescopic assembly (4), characterized in that: An installation slot (3) for installing a telescopic assembly is provided at the beam end of the first beam body (1) and the beam end of the second beam body (2); an embedded fixing piece is embedded at the bottom of the installation slot (3); a height adjustment assembly (5) fixed to the embedded fixing piece is installed in the installation slot (3); the telescopic assembly (4) is fixed on the height adjustment assembly (5); the telescopic assembly (4) comprises a first telescopic plate (41), a second telescopic plate (42), a first supporting rib plate (43) and a second supporting rib plate (44); the first supporting rib plate (43) is fixed to the outer side of the bottom of the first telescopic plate (41); the second supporting rib plate (44) is fixed to the outer side of the bottom of the second telescopic plate (42); the first supporting rib plate (43) is fixed to the outer side of the bottom of the second telescopic plate (42); the first supporting rib plate (44) is fixed to the outer side of the bottom of the second telescopic plate (42 ...4) is fixed to the outer side of the bottom of the second telescopic plate (42); the first supporting rib plate (43) is fixed to the outer side of the bottom of the second telescopic plate (42); the first supporting rib plate (44) is fixed to the outer side of the bottom of the second tele The plate (43) and the second supporting rib plate (44) are fixed on a height adjustment component (5) corresponding to the mounting notch (3); the height adjustment component (5) comprises a height adjustment plate (51); the height adjustment plates (51) are spaced apart along the length direction of the mounting notch (3); an anti-collision baffle plate (6) is welded to the outer side of the height adjustment plate (51); the height adjustment plate (51) is L-shaped and has a horizontal supporting step (512) formed on the inner side of the middle; the bottom of the height adjustment plate (51) is welded and fixed to the embedded fixing part; the first supporting rib plate (43) and the second supporting rib plate (44) are supported on the corresponding horizontal supporting step (512) and are welded and fixed to the height adjustment plate (51); or the height adjustment plate (51) is T-shaped.

2. The bridge expansion joint device according to claim 1, characterized in that: The height adjustment component (5) comprises a through rib (52), and a corresponding through rib hole (511) is formed on the height adjustment plate (51), and the through rib (52) passes through the through rib hole (511) and is fixed to the height adjustment plate (51).

3. The bridge expansion joint device according to claim 2, characterized in that: The anti-collision baffle (6) is flush with the bridge pavement (17).

4. The bridge expansion joint device according to claim 1, characterized in that: A noise reduction component (7) is provided below the first telescopic plate (41) and the second telescopic plate (42); a support bar (8) and a baffle (9) are respectively welded to the lower and upper parts of the inner side of the first supporting rib (43) and the lower and upper parts of the inner side of the second supporting rib (44); the noise reduction component (7) is supported on the support bar (8), and the baffle (9) is covered on the noise reduction component (7).

5. The bridge expansion joint device according to claim 4, characterized in that: A waterstop (10) is installed below the noise reduction component (7), a waterstop bracket (11) extends inwardly from the height adjustment component (5), and both ends of the waterstop (10) are installed on the waterstop bracket (11).

6. The bridge expansion joint device according to any one of claims 1 to 5, characterized in that: The embedded fixing part is an embedded steel plate (12), and the embedded steel plate (12) is fixed to the corresponding beam body through shear nails (13).

7. A method for installing a bridge expansion joint device as claimed in claim 6, characterized in that The steps include: S1, digging and cleaning the installation slot (3), and measuring the depth of the installation slot (3); S2, according to the notch depth measured in step S1, the height adjustment component (5) is processed accordingly, and the adjusted height adjustment component (5) is welded to the embedded steel plate (12); S3, installing the water stop strip (10) and the formwork (14) for pouring; S4, adjusting the position of the telescopic assembly (4) in the longitudinal and transverse directions of the bridge and the flatness with respect to the bridge pavement (17), and welding and fixing the telescopic assembly (4) to the height adjustment assembly (5); S5, welding and fixing the anti-collision baffle (6) on the outer side of the height adjustment component (5), and making the upper surface of the anti-collision baffle (6) flush with the bridge road surface (17); S6. Clean the weld and the notch, and pour the filler (15) into the notch.

Images