Novel bridge deck expansion joint structure

Abstract

The utility model relates to a novel bridge deck expansion joint structure which comprises a bridge deck structure layer, a bridge deck pavement layer, an inverted-U-shaped steel bar, a water stop belt, a pipe clamp, a positioning seat, an adjusting bolt, channel steel, a rubber pad and first deformed steel, and the first deformed steel is arranged on one side of an expansion joint and pressed on the rubber pad. The second deformed steel is arranged on the other side of the expansion joint, the second deformed steel and the first deformed steel are arranged at an interval, and the second deformed steel is pressed on the rubber pad; the elastic sealing gasket is filled between the first deformed steel and the second deformed steel, two sides of the elastic sealing gasket are respectively connected with the first deformed steel and the second deformed steel, and the bottom surface of the elastic sealing gasket is cushioned on the rubber gasket; the positioning reinforcing steel bar is bent into a U shape, upper and lower branches of the positioning reinforcing steel bar are horizontally arranged and fixed on the first deformed steel and the second deformed steel, and the middle part of the positioning reinforcing steel bar is partially overlapped with and propped against the inverted U-shaped reinforcing steel bar; and the cement mortar layer is filled between the first deformed steel and the bridge deck pavement layer and between the second deformed steel and the bridge deck pavement layer. The device is favorable for timely adjusting, tensioning and laying the water-stop belt.

Description

Technical Field

[0001] The utility model relates to the field of bridges, in particular to a novel bridge deck expansion joint structure. Background Art

[0002] Bridge expansion joints: These are typically installed between beam ends, between beam ends and abutments, or at hinged joints to accommodate bridge deck deformation. Waterstops are often installed in expansion joints to prevent water from flowing through the joints and into the beam interior, potentially corroding the reinforcement. However, these joints are prone to loosening during installation, making them difficult to tension and secure, and labor-intensive. Using one-time fixing methods like bonding can be difficult to adjust in the event of tilting or wrinkling. A loosely secured waterstop can easily slip during pouring, leading to poor construction quality and compromised waterproofing. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a new bridge deck expansion joint structure, which is conducive to the tensioning and fixing of the waterstop, and facilitates timely adjustment and tensioning and laying of the waterstop, so as to avoid unevenness, wrinkles or looseness and slippage during the pouring process, so as to fully ensure the waterproof effect of the expansion joint.

[0004] In order to solve the above problems, a new bridge deck expansion joint structure is adopted, which includes:

[0005] The bridge deck structure layer has expansion joints reserved thereon;

[0006] Bridge deck pavement layer, which is laid on the bridge deck structure layer;

[0007] Inverted U-shaped steel bars are pre-embedded in the bridge deck structure layer on both sides of the expansion joint, with multiple bars laid in parallel in a row, each perpendicular to the expansion joint;

[0008] A waterstop is laid on the expansion joint and has first expanded portions on both side edges;

[0009] The pipe clamp is mounted on the first enlarged portion, accommodates the first enlarged portion and is adapted thereto, and is generally square cylindrical in shape and contains a threaded hole. One end of the pipe clamp for clamping the first enlarged portion has a recess, which is adapted to the first enlarged portion.

[0010] A positioning seat, which is connected by the side of the inverted U-shaped steel bar close to the expansion joint and contains a threaded hole;

[0011] an adjusting bolt which is bolted transversely through the positioning seat and is threadedly connected to the pipe clamp;

[0012] Channel steel, which is pre-buried in the bridge deck structure layer and accommodates the pipe clamp, and is adapted to the outer side of the pipe clamp;

[0013] a rubber pad, which presses on the waterstop;

[0014] a first special-shaped steel, which is arranged on one side of the expansion joint and pressed on the rubber pad;

[0015] a second special-shaped steel, which is arranged on the other side of the expansion joint, spaced apart from the first special-shaped steel, and pressed on the rubber pad;

[0016] An elastic sealing gasket is inserted between the first special-shaped steel and the second special-shaped steel, with two sides of the elastic sealing gasket connected to the first special-shaped steel and the second special-shaped steel respectively, and a bottom surface of the elastic sealing gasket is placed on the rubber gasket;

[0017] A positioning steel bar bent into a U-shape, with upper and lower branches arranged horizontally and fixed to the first special-shaped steel and the second special-shaped steel, with the middle portion overlapping and abutting the inverted U-shaped steel bar;

[0018] The cement mortar layer is filled between the first special-shaped steel and the bridge deck pavement layer, and between the second special-shaped steel and the bridge deck pavement layer.

[0019] With such a structure, after the pipe clamp clamps the waterstop, the adjusting bolt rotates and the pipe clamp can move along the channel steel to tension and fix the waterstop. In this way, the tensioning effect can be adjusted to prevent the waterstop from wrinkling. After pouring the cement mortar, the waterstop is flat, airtight, and has better waterproof effect.

[0020] As a further improvement of the present invention, tooth plates are arranged at intervals on the sides of the first special-shaped steel and the second special-shaped steel, and the tooth plates of the first special-shaped steel and the tooth plates of the second special-shaped steel are arranged alternately; the elastic sealing gasket is distributed in an S shape between the tooth plates.

[0021] With such a structure, the elastic sealing gasket has a longer fixed length, more twists and turns, and a better fixing effect. When the first special-shaped steel and the second special-shaped steel are displaced up and down or left and right, the elastic sealing gasket is not easy to slip off.

[0022] As a further improvement of the present invention, a second enlarged portion is provided on the side of the elastic sealing pad, and a groove is provided in the tooth plate to fit with the second enlarged portion.

[0023] With such a structure, the elastic sealing gasket is more tightly connected to the tooth plate.

[0024] As a further improvement of the present invention, a side plate is integrally formed on the side of the first special-shaped steel and the second special-shaped steel away from the expansion joint and is closely attached to the side of the rubber pad.

[0025] Such a structure is adopted to limit the lateral expansion of the rubber pad to keep the bottom of the elastic sealing pad solid, and prevent the elastic sealing pad from being crushed by the vehicle due to the bottom being empty during use.

[0026] As a further improvement of the present invention, longitudinal steel bars are passed through the overlapping parts of the inverted U-shaped steel bars and the positioning steel bars, and the longitudinal steel bars are welded to fix the inverted U-shaped steel bars and the positioning steel bars.

[0027] With such a structure, after welding, the first special-shaped steel and the second special-shaped steel are fixed.

[0028] The utility model is conducive to the tensioning and fixing of the waterstop, and is convenient for timely adjustment and tensioning of the waterstop, so as to avoid unevenness, wrinkles or looseness and slippage during the pouring process, thereby fully ensuring the waterproof effect of the expansion joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the embodiment.

[0030] Figure 2 This is a schematic diagram of the partially enlarged structure of the pipe clamp.

[0031] Figure numerals: 1. Bridge deck structure layer; 101. Expansion joint; 2. Bridge deck pavement layer; 3. Inverted U-shaped steel bar; 4. Waterstop; 401. First expansion portion; 5. Pipe clamp; 501. Recess; 6. Positioning seat; 7. Adjusting bolt; 8. Channel steel; 9. Rubber pad; 10. First special-shaped steel; 11. Second special-shaped steel; 12. Elastic sealing pad; 121. Second expansion portion; 13. Positioning steel bar; 14. Cement mortar layer; 15. Tooth plate; 152. Groove; 16. Side plate; 17. Longitudinal steel bar. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] like Figure 1-Figure 2 As shown, a new bridge deck expansion joint structure includes:

[0036] The bridge deck structure layer 1 has an expansion joint 101 reserved thereon;

[0037] A bridge deck pavement layer 2, which is laid on the bridge deck structure layer 1;

[0038] Inverted U-shaped steel bars 3 are pre-embedded in the bridge deck structure layer 1 on both sides of the expansion joint 101, with multiple inverted U-shaped steel bars 3 laid in parallel in a row, each perpendicular to the expansion joint 101;

[0039] The water stop 4 is laid on the expansion joint 101 and has first expanded portions 401 on both side edges;

[0040] The pipe clamp 5 is mounted on the first enlarged portion 401, accommodating and fitting the first enlarged portion 401. The pipe clamp 5 is generally square cylindrical with a threaded hole. One end of the pipe clamp for holding the first enlarged portion 401 has a recess 501, which fits the first enlarged portion 401.

[0041] A positioning seat 6 is connected by the side of the inverted U-shaped steel bar 3 close to the expansion joint 101 and contains a threaded hole;

[0042] an adjusting bolt 7 which is laterally bolted through the positioning seat 6 and is threadedly connected to the pipe clamp 5;

[0043] Channel steel 8, which is pre-buried on the bridge deck structure layer 1 and accommodates the pipe clamp 5, and is adapted to the outer side of the pipe clamp 5;

[0044] A rubber pad 9, which is pressed on the waterstop 4;

[0045] A first special-shaped steel 10 is provided on one side of the expansion joint and presses on the rubber pad 9;

[0046] A second special-shaped steel 11 is provided on the other side of the expansion joint and is spaced apart from the first special-shaped steel 10 and is pressed on the rubber pad 9;

[0047] An elastic sealing gasket 12 is inserted between the first special-shaped steel 10 and the second special-shaped steel 11, with its two sides respectively connected to the first special-shaped steel 10 and the second special-shaped steel 11, and its bottom surface is cushioned on the rubber gasket 9;

[0048] The positioning steel bar 13 is bent into a U shape, with its upper and lower branches arranged horizontally and fixed on the first special-shaped steel 10 and the second special-shaped steel 11, and its middle part overlaps with and abuts against the inverted U-shaped steel bar 3;

[0049] The cement mortar layer 14 is filled between the first special-shaped steel 10 and the bridge deck pavement layer 2 , and between the second special-shaped steel 11 and the bridge deck pavement layer 2 .

[0050] With such a structure, after the pipe clamp 5 clamps the waterstop 4, the adjusting bolt 7 rotates, and the pipe clamp 5 can move along the channel steel 8 to tension and fix the waterstop 4. In this way, the tensioning effect can be adjusted to prevent the waterstop 4 from wrinkling. After pouring the cement mortar, the waterstop 4 is flat, airtight, and has a better waterproof effect.

[0051] In this embodiment, tooth plates 15 are spaced apart on the sides of the first special-shaped steel 10 and the second special-shaped steel 11 , and the tooth plates 15 of the first special-shaped steel 10 and the tooth plates 12 of the second special-shaped steel 11 are staggered; the elastic sealing gaskets 12 are distributed in an S shape between the tooth plates 12 .

[0052] With such a structure, the elastic sealing gasket 12 has a longer fixed length, more twists and turns, and a better fixing effect. When the first special-shaped steel 10 and the second special-shaped steel 11 are displaced up and down or left and right, the elastic sealing gasket 12 is not easy to slip off.

[0053] In this embodiment, a second enlarged portion 121 is provided on a side of the elastic sealing pad 12 , and a groove 152 is provided in the tooth plate 15 to fit with the second enlarged portion 121 .

[0054] With such a structure, the elastic sealing pad 12 is more tightly connected to the tooth plate 15 .

[0055] In this embodiment, a side plate 16 is integrally formed on the side of the first special-shaped steel 10 and the second special-shaped steel 11 away from the expansion joint 101 and is closely attached to the side of the rubber pad 9 .

[0056] With the structure, the rubber pad 9 is limited to expand laterally, so that the bottom of the elastic sealing pad 12 is kept full, and the elastic sealing pad 12 is prevented from being pressed and damaged by the vehicle due to the empty bottom during use.

[0057] In the embodiment, the overlapping part of the inverted U-shaped steel bars 3 and the positioning steel bars 13 is provided with the longitudinal steel bars 17, and the longitudinal steel bars 17 are welded to fix the inverted U-shaped steel bars 3 and the positioning steel bars 13.

[0058] With the structure, the first profiled steel 10 and the second profiled steel 11 are fixed after welding.

[0059] The utility model discantly facilitate timely adjustment and tensioning laying waterstop, make it avoid uneven, appear wrinkle or loose slip in the pouring process, to fully guarantee the waterproof effect of expansion joint.

[0060] The above is further detailed description of the utility model in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For the skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of equivalent substitutions or obvious modifications can be made, and the same performance or use is also regarded as belonging to the protection scope of the utility model.

Claims

1. A new bridge deck expansion joint structure, characterized by include: A bridge deck structure layer (1) having an expansion joint (101) reserved thereon; A bridge deck pavement layer (2) laid on the bridge deck structure layer (1); Inverted U-shaped steel bars (3) are pre-buried at intervals on the bridge deck structure layer (1) on both sides of the expansion joint (101), with a plurality of inverted U-shaped steel bars (3) laid in parallel at intervals in a row, each of which is perpendicular to the expansion joint (101); A water stop (4) is laid on the expansion joint (101), and has first expanded portions (401) on both side edges; A pipe clamp (5) is mounted on the first enlarged portion (401), accommodates the first enlarged portion (401) and is adapted thereto, is in the shape of a square tube as a whole, contains a threaded hole, and has a recess (501) at one end thereof for clamping the first enlarged portion (401), and the recess (501) is adapted to the first enlarged portion (401); A positioning seat (6) is connected to the side of the inverted U-shaped steel bar (3) close to the expansion joint (101) and contains a threaded hole; an adjusting bolt (7) which is laterally bolted through the positioning seat (6) and is threadedly connected to the pipe clamp (5); A channel steel (8) is pre-buried on the bridge deck structure layer (1) and accommodates the pipe clamp (5), and is adapted to the outer side of the pipe clamp (5); A rubber pad (9) pressed on the waterstop (4); A first special-shaped steel (10) is arranged on one side of the expansion joint and presses on the rubber pad (9); A second special-shaped steel (11) is arranged on the other side of the expansion joint, is spaced apart from the first special-shaped steel (10), and is pressed on the rubber pad (9); An elastic sealing gasket (12) is inserted between the first special-shaped steel (10) and the second special-shaped steel (11), with two sides of the elastic sealing gasket being connected to the first special-shaped steel (10) and the second special-shaped steel (11), and a bottom surface of the elastic sealing gasket being placed on the rubber gasket (9); A positioning steel bar (13) is bent into a U-shape, with upper and lower branches arranged horizontally and fixed on the first special-shaped steel (10) and the second special-shaped steel (11), with the middle thereof partially overlapping and abutting the inverted U-shaped steel bar (3); A cement mortar layer (14) is filled between the first special-shaped steel (10) and the bridge deck pavement layer (2), and between the second special-shaped steel (11) and the bridge deck pavement layer (2).

2. The novel bridge deck expansion joint structure according to claim 1 is characterized in that Tooth plates (15) are arranged at intervals on the sides of the first special-shaped steel (10) and the second special-shaped steel (11), and the tooth plates (15) of the first special-shaped steel (10) and the tooth plates (15) of the second special-shaped steel (11) are arranged alternately; the elastic sealing gasket (12) is distributed in an S-shape between the tooth plates (15).

3. The novel bridge deck expansion joint structure according to claim 2 is characterized in that A second enlarged portion (121) is provided on the side of the elastic sealing pad (12), and a groove (152) is provided in the tooth plate (15) to match the second enlarged portion (121).

4. The novel bridge deck expansion joint structure according to claim 1 is characterized in that A side plate (16) is integrally formed on the side of the first special-shaped steel (10) and the second special-shaped steel (11) away from the expansion joint (101) and is closely attached to the side of the rubber pad (9).

5. The novel bridge deck expansion joint structure according to claim 1 is characterized in that A longitudinal steel bar (17) is passed through the overlapping portion of the inverted U-shaped steel bar (3) and the positioning steel bar (13), and the longitudinal steel bar (17) is welded to fix the inverted U-shaped steel bar (3) and the positioning steel bar (13).

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