Water-tight bridge expansion device

Abstract

According to the watertight bridge expansion device, mounting notches are formed in the end of a first beam and the end of a second beam, a pre-embedded plate is mounted in each mounting notch, an anchoring plate is fixed to each pre-embedded plate, profile steel is fixed to each anchoring plate, the upper surface of each profile steel is flush with a road surface pavement layer, the outer side face of each profile steel abuts against the road surface pavement layer, and the first beam end and the second beam end are fixedly connected with the profile steel. And an elastic water stop body is filled or a water stop belt is mounted between the profile steel at the end part of the first beam and the profile steel at the end part of the second beam. The watertight bridge expansion device adopts a combined structure of the profile steel and the anchoring plate, the profile steel is used as an anti-collision baffle, a traditional profile steel expansion device is simplified, the watertight bridge expansion device has the advantages of being high in impact resistance and overall anchoring strength and good in durability, the anchoring plate transition connection structure is adopted, the overall anchoring performance of the profile steel and the bridge body is guaranteed, and the service life is prolonged. And meanwhile, the profile steel can be heightened and welded on the anchoring plate, the flatness of product installation is guaranteed, an elastic material full-sealing structure is adopted, the driving comfort and the environmental protection performance are improved, and the problem of water leakage is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the expansion joint technical field of bridge engineering especially is related to a water-tight bridge expansion device. BACKGROUND

[0002] Bridge expansion device refers to expansion device arranged between two beam ends, beam end and abutment or hinged position of bridge for satisfying the requirement of bridge deck deformation.

[0003] Steel expansion joint device is a kind of highway bridge expansion device, and it is an indispensable structure in bridge expansion device.The structure of current small bridge steel expansion joint device is composed of side beam steel, water stop belt, anchor bar and anchor plate, and the connecting mode of the side beam steel with beam body is direct welding of anchor bar and embedded steel bar.

[0004] In actual use, the steel expansion joint device has the following disadvantages:

[0005] 1, due to the installation characteristics of the product itself, the support arm is large, and the steel is prone to fracture.

[0006] 2, the embedded steel bar has defects such as loss, fracture and inaccurate height, which affects the installation quality of the expansion device.

[0007] 3, the transition section concrete is easily damaged due to the influence of construction quality.

[0008] 4, the water stop belt is prone to aging and damage, and then water seepage and leakage phenomenon occurs.

[0009] 5, when vehicles pass, it will produce larger vibration and noise, and the driving comfort and environmental protection performance are poor.

[0010] In summary, the existing bridge steel expansion joint device needs to be further improved. UTILITY MODEL CONTENTS

[0011] The utility model solves the technical problem in the prior art, and provides a water-tight bridge expansion device with simple structure and high reliability.

[0012] The utility model discloses a technical scheme that solves the above technical problems is as follows: a water-tight bridge expansion joint is installed between the first beam end and the second beam end, the first beam end and the second beam end are all provided with mounting notches, and embedded plates are installed in each mounting notch, characterized in that: an anchor plate is fixed to the embedded plate, a profile steel is fixed to the anchor plate, the upper surface of the profile steel is flush with the road surface pavement layer, the outer side surface of the profile steel abuts against the road surface pavement layer, and an elastic water stop body or a water stop belt is filled between the profile steel of the first beam end and the profile steel of the second beam end.

[0013] As a preferred scheme, the profile steel is an L-shaped steel, the L-shaped steel has a vertical part and a horizontal part that is bent inward from the top end of the vertical part, the vertical part is welded and fixed to the anchor plate, the outer side surface of the vertical part abuts against the road surface pavement layer, and the upper surface of the horizontal part is flush with the upper surface of the road surface pavement layer.

[0014] Further preferably, the inner side surface of the vertical part is welded and fixed to the outer side surface of the anchor plate, a gap is left between the horizontal part and the top of the anchor plate, and the elastic water stop body is filled in the gap. In this way, the welding height of the L-shaped steel can be adjusted, the gap increases when the installation height of the L-shaped steel is adjusted upward, the gap decreases when the installation height of the L-shaped steel is adjusted downward, the elastic water stop body is filled in the gap, the bonding force and the pulling force of the elastic water stop body can be increased, and the structure of the expansion joint is more reliable and firm.

[0015] In order to improve the structural strength of the expansion joint, a support rib plate is installed at the inner corner of the vertical part and the horizontal part.

[0016] As another preferred scheme, the profile steel is an F-shaped steel, the F-shaped steel includes a vertical installation part and an upper bent part and a lower bent part that are bent inward from the vertical installation part, the outer side surface of the vertical installation part abuts against the road surface pavement layer, the upper surface of the upper bent part is flush with the road surface pavement layer, the elastic water stop body is filled between the upper bent part and the lower bent part, or the two ends of the water stop belt are installed between the upper bent part and the lower bent part. In this way, the cavity formed by the F-shaped steel makes the contact area between the F-shaped steel and the elastic water stop body larger, the bonding force and the pulling force of the elastic water stop body can be increased, and the structural strength of the expansion joint is improved.

[0017] In order to improve the sealing performance of the expansion joint device, a sealing belt is installed in the construction joint between the first beam end and the second beam end, and a sealing body is filled between the sealing belt and the elastic water stop body.

[0018] Further preferably, the anchor plate is L-shaped, the anchor plate has a vertical portion and a water platform step portion bent outward from the bottom of the vertical portion, the steel profile is welded to the outer side of the vertical portion, and the bottom of the steel profile is arranged above the water platform step portion, or the anchor plate is a straight plate, and the steel profile is welded to the outer side of the anchor plate.

[0019] In order to increase the overall performance of the elastic material and prevent pull-out, a reinforcing bar is welded to the anchor plate, the reinforcing bar is arranged along the transverse bridge direction and is wrapped in the elastic waterstop body.

[0020] In order to further improve the structural strength of the expansion device, the anchor plates and the steel profiles are arranged at intervals along the transverse bridge direction, and a through hole is formed in the anchor plate for the elastic waterstop body to pass through. In this way, the elastic waterstop body can pass through the through hole, thereby improving the bonding force and the pull-out force of the elastic waterstop body.

[0021] In order to reliably fix the embedded plate to the beam body, the embedded plate is an embedded steel plate, and the embedded steel plate is fixed to the corresponding beam end portion by a shear pin. The structure and size of the embedded steel plate can be designed according to the design load requirements of the bridge vehicle.

[0022] Compared with the prior art, the water-tight bridge expansion device has the advantages that the water-tight bridge expansion device has strong impact resistance, high overall anchoring strength, good durability, excellent water-tightness and environmental protection performance, and the like. Specifically, the anchor plate is fixed to the embedded plate, the steel profile is fixed to the anchor plate, the combination structure of the steel profile and the anchor plate is adopted, the anchor plate transition connection structure is adopted, the overall anchoring performance of the steel profile and the beam body is ensured, the height of the steel profile can be adjusted and welded on the anchor plate, the flatness of product installation is ensured, the traditional steel expansion device is simplified, the product reliability and durability are improved, the upper surface of the steel profile is flush with the road pavement layer, the outer side surface of the steel profile abuts against the road pavement layer, the steel profile simultaneously plays the role of a crash barrier, resource cost is saved, product impact resistance is improved, the problem of easy damage of the transition section concrete is solved, in addition, the elastic waterstop body adopts an elastic material full-sealing structure, driving comfort and environmental protection performance are improved, the problem of easy water leakage is solved, and the problems of easy fracture of the ordinary steel expansion joint, insufficient pull-out force of the embedded steel reinforcement, easy damage of the transition section concrete, easy water leakage, and large noise are solved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural schematic view of an embodiment of the utility model;

[0024] Figure 2 FIG. 2 is a structural schematic view of another embodiment of the utility model;

[0025] Figure 3 FIG. 3 is a structural schematic view of a third embodiment of the utility model;

[0026] Figure 4 Figure 4 is a structural schematic diagram of the fourth embodiment of the present application;

[0027] Figure 5 Figure 5 is a structural schematic diagram of the fifth embodiment of the present application;

[0028] Figure 6 Figure 6 is a structural schematic diagram of the sixth embodiment of the present application. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below in combination with the drawings.

[0030] Embodiment 1

[0031] As shown in Figure 1 the present embodiment, the water-proof bridge expansion joint is installed between the first beam end portion 101 and the second beam end portion 102, and forms a construction joint 103 between the first beam end portion 101 and the second beam end portion 102. The first beam end portion 101 and the second beam end portion 102 are both provided with installation slots, and each installation slot is provided with a pre-embedded plate 1. The pre-embedded plate 1 is a pre-embedded steel plate, which is fixed to the corresponding beam end portion by shear pins 10. The pre-embedded plate is arranged along the length of the bridge deck, which facilitates the installation and positioning of the expansion joint on site, and is more conducive to the guarantee of welding strength and the reduction of installation construction time. The structural size of the pre-embedded plate can be designed according to the design load requirements of the bridge vehicle, such as the design of a pre-embedded plate with higher bearing capacity and thickness and reinforced connecting shear pins for heavy vehicles.

[0032] The anchor plate 2 is fixed on the embedded plate 1, and the profile steel is fixed on the anchor plate 2, the upper surface of the profile steel is flush with the pavement layer 100, and the outer side surface of the profile steel is in abutment with the pavement layer 100, and the elastic water stop body 4 is filled between the profile steel at the first beam end 101 and the profile steel at the second beam end 102. The profile steel in the embodiment is an L-shaped profile steel 31, the L-shaped profile steel 31 has a vertical portion 311 and a horizontal portion 312 which is bent and extends inwardly from the top end of the vertical portion 311, and the anchor plate 2 in the embodiment is L-shaped, the anchor plate 2 has a vertical portion 21 and a water platform step portion 22 which is bent outwardly from the bottom of the vertical portion, the vertical portion 31 of the L-shaped profile steel 31 is welded and fixed on the outer side surface of the vertical portion 21, the bottom of the L-shaped profile steel 31 is arranged above the water platform step portion 22, the outer side surface of the vertical portion 311 is in abutment with the pavement layer 100, and the upper surface of the horizontal portion 312 is flush with the upper surface of the pavement layer 100. Moreover, a gap is left between the horizontal portion 312 of the L-shaped profile steel 31 and the top of the anchor plate 2, and the elastic water stop body 4 is filled in the gap, so that the contact area between the elastic water stop body 4 and the L-shaped profile steel 31 and the anchor plate 2 is larger, the bonding force and the pulling force of the elastic water stop body are increased, the structural strength of the expansion device is improved, and the water sealing performance is better. The elastic water stop body 4 can be made of various elastic materials and is cast in place. The anchor plate 2 and the profile steel in the embodiment are spaced apart along the transverse bridge direction, and the through hole for the elastic water stop body 4 to pass through is formed in the anchor plate 2, so as to further increase the bonding force and the pulling force of the elastic water stop body and improve the structural strength. In addition, the sealing band 6 is arranged in the construction joint 103, and the sealing body 7 is filled between the sealing band 6 and the elastic water stop body 4, so as to further improve the water sealing performance.

[0033] During installation, the anchor plate 2 is first positioned and welded on the embedded plate 1, then the height of the L-shaped profile steel 31 is adjusted according to the notch and the height of the pavement, then the sealing band 6 is inserted, then the sealing body 7 of a certain height is poured, the sealing material of the sealing body 7 is preferably foamed material, and concrete or other sealing materials can also be selected, and finally the elastic material is poured, and the elastic water stop body 4 is formed after molding.

[0034] The L-shaped profile steel in the embodiment can be formed by butt welding of two steel plates, which can ensure the integrity of the part while flexibly adjusting the size, and in addition, the L-shaped profile steel can also be a whole according to actual conditions.

[0035] The expansion device in the embodiment cancels the anchor bar anchor plate of the traditional profile steel, directly welds and fixes the anchor plate 2 and the beam end embedded steel plate to form a whole anchor type structure, and solves various defects of the beam end embedded steel bar. The anchor plate 2 and the profile steel are welded and anchored in an integrated structure, the vertical portion 313 of the profile steel, that is, the vertical rib plate, is tightly attached to the asphalt excavation side, the transition section concrete is cancelled, and the phenomenon that the transition section concrete is easily damaged is solved.

[0036] In addition, the anchoring plate 2 has a height adjustment function, which can adjust the welding height of the profile steel according to the notch depth, ensure that the expansion device is horizontal with the road surface, reduce the impact of the tire on the product when passing, and prolong the service life. The number of anchoring plates 2 can be adjusted according to specific needs. The use of elastic materials for full sealing solves the defects of the expansion device of the profile steel, such as easy aging, damage, and water leakage, while reducing the impact and vibration when vehicles pass, improving driving comfort and environmental performance.

[0037] Example two:

[0038] As shown in Figure 2 , the anchoring plate 2 of the present embodiment is in the form of a straight plate, and the inner side surface of the vertical part 311 of the L-shaped steel 31 is welded and fixed to the outer side surface of the anchoring plate 2. The remaining structure of the present embodiment is the same as that of example one, which will not be described here.

[0039] Example three:

[0040] As shown in Figure 3 , with reference to example one, the anchoring plate 2 of the present embodiment adopts an L-shaped structure, i.e. the anchoring plate 2 has a vertical part and a water platform step part which is bent outward from the bottom of the vertical part, and the profile steel adopts an L-shaped steel 31, the inner side surface of the vertical part 311 of the L-shaped steel 31 is welded and fixed to the outer side surface of the vertical part of the anchoring plate 2. In addition, the inner corner between the vertical part 311 and the horizontal part 312 of the L-shaped steel 31 of the present embodiment is provided with a support rib plate 9 to improve the structural strength. In addition, a steel bar 8 is welded on the anchoring plate 2, which is preferably a threaded steel bar, and the steel bar 8 is arranged along the transverse bridge and wrapped in the elastic water stop body 4, thereby increasing the overall performance of the elastic water stop body 4 and preventing it from being pulled off. The remaining structure of the present embodiment can be referred to example one, which will not be described here.

[0041] Example four:

[0042] As shown in Figure 4 , the profile steel of the present embodiment is an F-shaped steel 32, which includes a vertical mounting part 321 and an upper bending part 322 and a lower bending part 323 which are bent inward from the vertical mounting part 321, the outer side surface of the vertical mounting part 321 abuts against the road pavement layer 100, the upper surface of the upper bending part 322 is flush with the road pavement layer 100, and the elastic water stop body 4 is poured between the upper bending part 322 and the lower bending part 323. The cavity formed by the F-shaped steel 32 of the present embodiment can increase the bonding force and pulling force of the elastic water stop body 4, making the structure of the expansion device more reliable and firm. The anchoring plate 2 of the present embodiment adopts an L-shaped structure, i.e. the anchoring plate 2 has a vertical part and a water platform step part which is bent outward from the bottom of the vertical part, and the inner side surface of the vertical mounting part 321 of the F-shaped steel 32 is welded and fixed to the outer side surface of the vertical part of the anchoring plate 2. The remaining structure of the expansion device of the present embodiment can be referred to example one, which will not be described here.

[0043] Example 5:

[0044] like Figure 5 As shown, the anchor plate 2 in this embodiment is a straight plate, and the inner side of the vertical mounting part 321 of the F-shaped steel 32 is welded and fixed to the outer side of the anchor plate 2. The rest of the structure in this embodiment is the same as that in Embodiment 4, and will not be described in detail here.

[0045] Example 6:

[0046] like Figure 6 As shown, the steel profile in this embodiment is an F-shaped steel 32. The F-shaped steel 32 includes a vertical mounting part 321 and an upper bending part 322 and a lower bending part 323 that bend inward from the vertical mounting part 321. The two ends of the waterstop 5 are installed between the upper bending part 322 and the lower bending part 323.

[0047] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, various modifications or improvements can be made to the present utility model without departing from the principle of the present utility model. For example, in addition to adopting an L-shaped structure and a straight plate structure, the anchor plate 2 can also adopt other different structures such as an inverted T-shape. For example, in addition to adopting an L-shaped and an F-shaped steel section, other different structures can also be adopted. These are all considered to be within the protection scope of the present utility model.

Claims

1. A water-tight bridge expansion joint installed between a first beam end (101) and a second beam end (102), each of the first beam end (101) and the second beam end (102) being provided with a mounting slot, and a pre-embedded plate (1) being installed in each of the mounting slots, characterized in that: Anchoring plate (2) is fixed on the pre-embedded plate (1), and profile steel is fixed on the anchoring plate (2), the upper surface of the profile steel is flush with the pavement pavement layer (100), and the outer side of the profile steel is in contact with the pavement pavement layer (100), and the profile steel between the first beam end (101) and the second beam end (102) is filled with elastic water stop body (4) or installed with water stop belt (5).

2. The watertight bridge expansion joint according to claim 1, characterized in that: The profile steel is L-shaped steel (31), the L-shaped steel (31) has a vertical part (311) and a horizontal part (312) which is bent inward from the top end of the vertical part (311), the vertical part (311) is welded and fixed on the outer side of the anchoring plate (2), and the outer side of the vertical part (311) is in contact with the pavement pavement layer (100), and the upper surface of the horizontal part (312) is flush with the upper surface of the pavement pavement layer (100).

3. The watertight bridge expansion joint according to claim 2, characterized in that: The inner side of the vertical part (311) is welded and fixed on the outer side of the anchoring plate (2), and a gap is left between the horizontal part (312) and the top of the anchoring plate (2), and the gap is filled with the elastic water stop body (4).

4. The watertight bridge expansion joint according to claim 2, wherein: The inner corner of the vertical part (311) and the horizontal part (312) is provided with a supporting rib plate (9).

5. The watertight bridge expansion joint of claim 1, wherein: The profile steel is F-shaped steel (32), the F-shaped steel (32) includes a vertical mounting part (321) and an upper bending part (322) and a lower bending part (323) which are bent inward from the vertical mounting part (321), the outer side of the vertical mounting part (321) is in contact with the pavement pavement layer (100), the upper surface of the upper bending part (322) is flush with the pavement pavement layer (100), and the upper bending part (322) and the lower bending part (323) are filled with the elastic water stop body (4), or the two ends of the water stop belt (5) are installed between the upper bending part (322) and the lower bending part (323).

6. The watertight bridge expansion joint of claim 1, wherein: A sealing belt (6) is installed in the construction joint (103) between the first beam end (101) and the second beam end (102), and a sealing body (7) is filled between the sealing belt (6) and the elastic water stop body (4).

7. The watertight bridge expansion joint of claim 1, wherein: The anchoring plate (2) is L-shaped, the anchoring plate (2) has a vertical part (21) and a water platform step part (22) which is bent outward from the bottom of the vertical part, the profile steel is welded and fixed on the outer side of the vertical part (21), and the bottom of the profile steel is arranged above the water platform step part (22), or the anchoring plate (2) is a straight plate, and the profile steel is welded and fixed on the outer side of the anchoring plate (2).

8. The watertight bridge expansion joint of claim 1, wherein: Steel bars (8) are welded on the anchoring plate (2), the steel bars (8) are arranged along the transverse bridge direction and wrapped in the elastic water stop body (4).

9. The watertight bridge expansion joint of claim 1, wherein: The anchoring plate (2) and the profile steel are spaced apart along the transverse bridge direction, and through holes are formed in the anchoring plate (2) for the elastic water stop body (4) to pass through.

10. The watertight bridge expansion joint according to any one of claims 1 to 9, characterized in that: The pre-embedded plate (1) is a pre-embedded steel plate, and the pre-embedded steel plate is fixed on the corresponding beam end by shear pins (10).

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