Integral anchoring type multidirectional displacement bridge expansion device

Abstract

The utility model relates to the field of bridge expansion devices, in particular to an integral anchoring type multidirectional displacement bridge expansion device. The left side integral ribbed comb plate (2) and the right side integral ribbed comb plate (9) are located on the two sides of a bridge beam end expansion joint (18) and are formed by integrally cutting integrally-rolled door-shaped steel (14) or integrally-rolled pi-shaped steel (16) according to a certain curve line shape (15) and conducting secondary machining; round, arc-shaped or trapezoidal chamfers are arranged at the ends of the comb teeth of the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9), and triangular or quarter-oval chamfers are arranged at the roots of the comb teeth of the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9). According to the bridge expansion device, the durability of the expansion device can be effectively improved, and the effects of reducing noise and adapting to the multi-direction displacement requirement of a bridge are achieved.

Description

Technical Field

[0001] The utility model relates to the field of bridge expansion devices, in particular to an integral anchorage type multi-directional displacement bridge expansion device. Background Art

[0002] 200810163577.9 - "Bridge expansion joint device resistant to extra-large vertical angular displacement" realizes the theoretically multi-directional displacement function through a longitudinal rotating shaft. However, during the actual installation process, the longitudinal rotating shaft is wrapped by concrete and cannot be realized.

[0003] 201110125568.2 - "Module comb tooth plate type multi-directional displacement bridge expansion device and its installation method" isolates the spherical displacement mechanism from concrete through a displacement box to realize the theoretically multi-directional displacement function. However, during the actual installation process, the steel displacement box limits the spherical displacement space and cannot be realized.

[0004] That is, the defect of the prior art is that the longitudinal rotating shaft is wrapped by concrete and cannot be realized, and the steel displacement box limits the spherical displacement space and cannot be realized; that is, in the actual implementation of the prior art, the multi-directional displacement ability is not strong. Summary of the Utility Model

[0005] Purpose of the utility model: To provide an integral anchorage type multi-directional displacement bridge expansion device and method with better effects. The specific purpose can be seen in multiple substantial technical effects in the specific implementation part.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An integral anchorage type multi-directional displacement bridge expansion device, the bridge expansion device includes a left integral ribbed comb tooth plate 2 and a right integral ribbed comb tooth plate 9 located on both sides of the expansion joint 18 at the bridge beam end and installed in the reserved groove 17 for the beam end expansion device. It is characterized in that the left integral ribbed comb tooth plate 2 and the right integral ribbed comb tooth plate 9 are integrally cut and secondarily processed from a whole rolled portal steel 14 or a whole rolled π-shaped steel 16 according to a certain curve line shape 15;

[0008] The ribbed plates of the left integral ribbed comb tooth plate 2 and the right integral ribbed comb tooth plate 9 form a right angle or an obtuse angle with their respective short side sides, and are respectively welded to the connecting anchorage plate 1 through this right angle or obtuse angle area; that is, the shapes of the fitting parts of the connecting anchorage plate 1 with the left integral ribbed comb tooth plate 2 and the right integral ribbed comb tooth plate 9 are consistent;

[0009] The connecting anchorage plate 1 has a structure with a hole in the middle;

[0010] At the lower part of the comb tooth sides of the left integrally ribbed comb tooth plate 2 and the right integrally ribbed comb tooth plate 9, there are sliding steel plates 4 stacked up and down. The root of the sliding steel plate 4 is connected to the rib plates of the left integrally ribbed comb tooth plate 2 and the right integrally ribbed comb tooth plate 9 through fixed angle steels 3;

[0011] At the lower part of the comb tooth side of the right integrally ribbed comb tooth plate 9, a support anchoring plate 8 is welded; The upper left part of the support anchoring plate 8 includes a U-shaped notch, and the right side surface of the support anchoring plate 8 includes an L-shaped notch;

[0012] The L-shaped notch on the right side surface of the support anchoring plate 8 is welded and fitted to the vertical rib plate of the right integrally ribbed comb tooth plate 9;

[0013] A fixed clamping groove 7 is welded to the upper left U-shaped notch of the support anchoring plate 8, and a displacement bearing 6 is welded or adhered to the upper part of the fixed clamping groove 7;

[0014] The top of the displacement bearing 6 is fitted to the sliding steel plate 4 at the lower part of the right integrally ribbed comb tooth plate 9;

[0015] A strengthening vertical plate 5 is welded to the left side of the support anchoring plate 8; The bottom surface of the vertical rib plate of the left integrally ribbed comb tooth plate 2 is in the same plane as the bottom surface of the strengthening vertical plate 5, and a water stop 10 and a concrete pouring formwork 11 are respectively placed at the lower part of the strengthening vertical plate 5.

[0016] A further technical solution of the present utility model is that: the hole in the middle of the connecting anchoring plate 1 is a rectangular hole, the long side of the rectangular hole is not less than 150 mm, and the short side is not less than 30 mm.

[0017] A further technical solution of the present utility model is that: the lengths of the left integrally ribbed comb tooth plate 2 and the right integrally ribbed comb tooth plate 9 along the bridge width direction are 1000 mm - 3000 mm.

[0018] A further technical solution of the present utility model is that: the comb tooth ends of the left integrally ribbed comb tooth plate 2 and the right integrally ribbed comb tooth plate 9 are provided with round, arc or trapezoidal chamfers.

[0019] A further technical solution of the present utility model is that: the thicknesses of the connecting anchoring plate 1 and the support anchoring plate 8 are not less than 10 mm, and the connecting anchoring plate 1 and the support anchoring plate 8 are uniformly arranged in multiple numbers along the bridge width direction of the bridge beam end expansion joint 18, and the spacing is not greater than 250 mm.

[0020] A further technical solution of the present utility model is that: the outer edge of the connecting anchoring plate 1 close to the side of the bridge beam end expansion joint 18 is complementary in shape to and welded and fitted to the left integrally ribbed comb tooth plate 2 or the right integrally ribbed comb tooth plate 9;

[0021] The vertical distance from the highest point on the top surface of the connecting and anchoring plate 1 away from the side of the bridge beam end expansion joint 18 to the top surfaces of the left integral ribbed comb-shaped plate 2 and the right integral ribbed comb-shaped plate 9 is greater than 20 mm.

[0022] A further technical solution of the present utility model lies in that: the upper left part of the supporting and anchoring plate 8 includes a U-shaped notch, and the right side surface of the supporting and anchoring plate 8 includes an L-shaped notch.

[0023] A further technical solution of the present utility model lies in that: the sliding steel plates 4 are arranged in an overlapping and staggered manner up and down and can slide relative to each other, and the length of the sliding steel plates 4 is the same as that of the left integral ribbed comb-shaped plate 2 and the right integral ribbed comb-shaped plate 9.

[0024] A further technical solution of the present utility model lies in that: the displacement bearing 6 is of a rectangular strip structure, and the length of the displacement bearing 6 is the same as that of the left integral ribbed comb-shaped plate 2 and the right integral ribbed comb-shaped plate 9; the fixed card slot 7 is of a U-shaped strip structure, and its length is the same as that of the displacement bearing 6.

[0025] An installation method for an integral anchoring type multi-directional displacement bridge expansion device is characterized by comprising the following steps:

[0026] Weld a plurality of uniformly arranged connecting and anchoring plates 1 on the left side of the vertical rib of the left integral ribbed comb-shaped plate 2, place the sliding steel plates 4 in a fitting manner at the lower part of the comb side of the left integral ribbed comb-shaped plate 2, and weld the fixed angle steel 3 in a fitting manner at the root of the sliding steel plates 4 to relatively fix the sliding steel plates 4 and the left integral ribbed comb-shaped plate 2;

[0027] Weld a plurality of uniformly arranged connecting and anchoring plates 1 on the right side of the vertical rib of the right integral ribbed comb-shaped plate 9, leave a height space for one sliding steel plate 4 at the lower part of the comb side of the right integral ribbed comb-shaped plate 9 and then place the sliding steel plates 4, and weld the fixed angle steel 3 in a fitting manner at the root of the sliding steel plates 4 to relatively fix the sliding steel plates 4 and the right integral ribbed comb-shaped plate 9;

[0028] Weld or bond the displacement bearing 6 on the upper part of the fixed card slot 7; weld a plurality of uniformly arranged supporting and anchoring plates 8 on the lower part of the fixed card slot 7, connect the fixed card slot 7, the displacement bearing 6 and the supporting and anchoring plates 8 into a whole and then weld them into a whole with the right integral ribbed comb-shaped plate 9 through the L-shaped notch of the supporting and anchoring plate 8;

[0029] Manufacture a concrete pouring formwork 11 according to the depth of the beam end expansion device reserved groove 17, stand the concrete pouring formwork 11 on both sides of the bridge beam end expansion joint 18, and connect it with the beam body embedded steel bars 12 by using binding steel bars; place a water stop 10 on the upper parts of the two concrete pouring formworks 11, and the water stop 10 and the concrete pouring formwork 11 can be bonded or clamped by a buckle;

[0030] Use a hoisting device to place the integral connecting member of the left integral ribbed comb-tooth plate 2 and the right integral ribbed comb-tooth plate 9 that have been connected and formed into the reserved groove 17 of the beam end expansion device, ensuring that the left integral ribbed comb-tooth plate 2 and the right integral ribbed comb-tooth plate 9 are arranged staggered and the upper surfaces are on the same horizontal plane as the bridge deck;

[0031] Connect multiple pre-embedded steel bars 12 of the beam body to the corresponding connecting anchor plates 1 and supporting anchor plates 8 on the left and right sides to ensure firm connection. Insert a longitudinal steel bar 13 into the loop-shaped hollow of the connecting anchor plate 1, and the length of the longitudinal steel bar 13 is the same as the width of the bridge;

[0032] After the integral anchor multi-directional displacement bridge expansion device is connected, pour post-cast strip concrete 19 that meets the strength requirements into the reserved groove 18 of the beam end expansion device. The post-cast strip concrete 19 is steel fiber or polypropylene fiber concrete, ensuring that the top surface of the post-cast strip concrete 19 is on the same horizontal plane as the upper surfaces of the left integral ribbed comb-tooth plate 2 and the right integral ribbed comb-tooth plate 9 and the bridge deck.

[0033] The utility model adopting the above technical solution has the following beneficial effects compared with the prior art: The utility model can meet the multi-directional displacement requirements such as horizontal, vertical, and torsional displacements through the elastic displacement bearings, and at the same time, the displacement bearings are completely separated from the concrete. Because the deformation ability of rubber is very strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to further illustrate the utility model, the following is further described in conjunction with the drawings:

[0035] Figure 1 It is a cross-sectional view of the utility model;

[0036] Figure 2 It is a three-dimensional view of the utility model;

[0037] Figure 3 It is a top view of the structure of the utility model;

[0038] Figure 4 It is a three-dimensional view of the utility model;

[0039] Figure 5 It is a three-dimensional view of components 5 and 8;

[0040] Figure 6 It is a three-dimensional view of components 6 and 7;

[0041] Figure 7 It is a three-dimensional view of component 1;

[0042] Figure 8 It is a three-dimensional view of components 3 and 4;

[0043] Figure 9 It is a three-dimensional unlabeled view of the utility model;

[0044] Figure 10 is a perspective view of the utility model component 14;

[0045] Figure 11 is a perspective view of the utility model component 15;

[0046] Figure 12 is a perspective view of the utility model component 16;

[0047] Figure 13 It is the layout diagram of the beam body of the utility model component;

[0048] Figure 14 It is a cross-sectional view of the utility model;

[0049] Among them: 1. Connecting anchor plate; 2. Left integral ribbed comb plate; 3. Fixed angle steel; 4. Sliding steel plate; 5. Strengthening vertical plate; 6. Displacement support; 7. Fixed slot; 8. Support anchor plate; 9. Right integral ribbed comb plate; 10. Waterstop; 11. Concrete pouring formwork; 12. Embedded steel bars; 13. Longitudinal steel bars; 14. Integrally rolled door-shaped steel; 15. Curved line shape; 16. Integrally rolled π-shaped steel; 17. Reserved slot for beam end expansion device; 18. Bridge beam end expansion joint; 19. Post-cast concrete. DETAILED DESCRIPTION

[0050] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, unless otherwise clearly 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 directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0052] This patent provides multiple parallel solutions. The different expressions belong to improved solutions or parallel solutions based on the basic solution. Each solution has its own unique characteristics. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other. The fixing method not described in the text can be any one of screw fixing, bolt fixing or glue bonding.

[0053] Embodiment 1: Combining all the drawings; an integral anchoring type multi-directional displacement bridge expansion device, the bridge expansion device includes a left integral ribbed comb plate 2 and a right integral ribbed comb plate 9 located on both sides of the expansion joint 18 at the beam end of the bridge and installed in the reserved groove 17 for the beam end expansion device. It is characterized in that the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 are integrally cut and secondary processed from a whole-rolled portal steel 14 or a whole-rolled π-shaped steel 16 according to a certain curve line 15;

[0054] The rib plates of the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 form a right angle or an obtuse angle with their respective short sides, and are respectively welded to the connecting anchor plate 1 through the right angle or obtuse angle area; that is, the shapes of the fitting parts of the connecting anchor plate 1 with the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 are the same;

[0055] The connecting anchor plate 1 has a structure with a hole in the middle;

[0056] Sliding steel plates 4 stacked up and down are placed at the lower part of the comb teeth sides of the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9, and the roots of the sliding steel plates 4 are connected to the rib plates of the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 through fixed angle steels 3;

[0057] A support anchor plate 8 is welded to the lower part of the comb teeth side of the right integral ribbed comb plate 9; the upper left part of the support anchor plate 8 includes a U-shaped notch, and the right side surface of the support anchor plate 8 includes an L-shaped notch;

[0058] The right side L-shaped notch of the support and anchorage plate 8 is in close contact and welded with the vertical rib plate of the right integral ribbed comb plate 9;

[0059] The upper left U-shaped notch of the support and anchorage plate 8 is welded with the fixed clamping groove 7, and the displacement bearing 6 is welded or bonded to the upper part of the fixed clamping groove 7;

[0060] The top of the displacement bearing 6 is in close contact with the sliding steel plate 4 at the lower part of the right integral ribbed comb plate 9;

[0061] The strengthening vertical plate 5 is welded to the left side of the support and anchorage plate 8; the bottom surface of the vertical rib plate of the left integral ribbed comb plate 2 is on the same plane as the bottom surface of the strengthening vertical plate 5, and the water stop 10 and the concrete casting formwork 11 are respectively placed at the lower part of the strengthening vertical plate 5.

[0062] The substantial technical effects achieved by the technical solution here and the implementation process are as follows:

[0063] An installation method for an integral anchorage type multi-directional displacement bridge expansion device, characterized by comprising the following steps:

[0064] A plurality of uniformly arranged connecting and anchorage plates 1 are welded to the left side of the vertical rib plate of the left integral ribbed comb plate 2. A sliding steel plate 4 is placed in close contact with the lower part of the comb side of the left integral ribbed comb plate 2, and a fixed angle steel 3 is welded in close contact with the root of the sliding steel plate 4 to relatively fix the sliding steel plate 4 and the left integral ribbed comb plate 2;

[0065] A plurality of uniformly arranged connecting and anchorage plates 1 are welded to the right side of the vertical rib plate of the right integral ribbed comb plate 9. After leaving a height space for a sliding steel plate 4 at the lower part of the comb side of the right integral ribbed comb plate 9, the sliding steel plate 4 is placed, and a fixed angle steel 3 is welded in close contact with the root of the sliding steel plate 4 to relatively fix the sliding steel plate 4 and the right integral ribbed comb plate 9;

[0066] The displacement bearing 6 is welded or bonded to the upper part of the fixed clamping groove 7; a plurality of uniformly arranged support and anchorage plates 8 are welded to the lower part of the fixed clamping groove 7. After connecting the fixed clamping groove 7, the displacement bearing 6 and the support and anchorage plates 8 into a whole, they are integrally welded with the right integral ribbed comb plate 9 through the L-shaped notch of the support and anchorage plates 8;

[0067] The concrete casting formwork 11 is made according to the depth of the reserved groove 17 of the beam end expansion device. The concrete casting formwork 11 is erected on both sides of the bridge beam end expansion joint 18 and connected to the embedded steel bars 12 of the beam body by tying steel bars; the water stop 10 is placed on the upper parts of the two concrete casting formworks 11, and the water stop 10 and the concrete casting formwork 11 can be bonded or clamped by a buckle;

[0068] Use a hoisting device to place the integral connecting member of the left integral ribbed comb tooth plate 2 and the right integral ribbed comb tooth plate 9 that have been connected and formed into the reserved groove 17 of the beam end expansion device, ensuring that the left integral ribbed comb tooth plate 2 and the right integral ribbed comb tooth plate 9 are arranged alternately and the upper surfaces are on the same horizontal plane as the bridge deck;

[0069] Correspondingly connect multiple beam body embedded steel bars 12 with multiple left and right connecting anchor plates 1 and support anchor plates 8 to ensure firm connection. Insert a longitudinal steel bar 13 into the loop-shaped hollow of the connecting anchor plate 1, and the length of the longitudinal steel bar 13 is the same as the width of the bridge;

[0070] After the integral anchoring type multi-directional displacement bridge expansion device is connected, pour post-cast strip concrete 19 that meets the strength requirements into the reserved groove 18 of the beam end expansion device. The post-cast strip concrete 19 is steel fiber or polypropylene fiber concrete, ensuring that the top surface of the post-cast strip concrete 19 is on the same horizontal plane as the upper surfaces of the left integral ribbed comb tooth plate 2 and the right integral ribbed comb tooth plate 9 and the bridge deck.

[0071] Regarding the defects of the prior art "the longitudinal rotating shaft is wrapped by concrete and cannot be realized, and the spherical displacement space is restricted by the steel displacement box", "it cannot be realized; that is, in the actual implementation of the prior art, the multi-directional displacement ability is not strong.", the advantage of this patent is that a displacement bearing 6 is welded or bonded to the upper part of the fixed card slot 7. The material of the displacement bearing 6 is preferably rubber. The displacement bearing 6 can be squeezed up and down to achieve up and down displacement. At the same time, as rubber, the displacement bearing 6 can squeeze the side of the fixed card slot 7 to achieve side rubbing and pressing. To achieve displacement. The utility model can realize multi-directional displacement requirements such as horizontal, vertical, and torsion through the elastic displacement bearing, and at the same time, the displacement bearing is completely separated from the concrete. Because the deformation ability of rubber is very strong.

[0072] Embodiment 2: As a further improvable scheme or a parallel scheme or an alternative independent scheme, the hole in the middle of the connecting anchor plate 1 is a rectangular hole, the long side of the rectangular hole is not less than 150 mm, and the short side is not less than 30 mm. The substantial technical effect and its implementation process, that is, the basic function, of the technical solution here are as follows: Similar dimensions are within the protection scope of this patent.

[0073] Embodiment 3: As a further improvable scheme or a parallel scheme or an alternative independent scheme, the lengths of the left integral ribbed comb tooth plate 2 and the right integral ribbed comb tooth plate 9 in the bridge width direction are 1000 mm - 3000 mm. The substantial technical effect and its implementation process, that is, the basic function, of the technical solution here are as follows: Similar dimensions are within the protection scope of this patent.

[0074] Embodiment 4: As a further improvable solution, parallel solution or alternative independent solution, the comb tooth ends of the left overall ribbed comb tooth plate 2 and the right overall ribbed comb tooth plate 9 are provided with circular, arc-shaped or trapezoidal chamfers. The substantial technical effects and the implementation process, i.e., the basic functions, of the technical solution herein are as follows: The circular, arc-shaped or trapezoidal chamfers are preferred shapes, which can squeeze the garbage out of the gaps at the ends of the comb teeth during the advancing process.

[0075] Embodiment 5: As a further improvable solution, parallel solution or alternative independent solution, the thickness of the connecting anchor plate 1 and the supporting anchor plate 8 is not less than 10 mm. The connecting anchor plate 1 and the supporting anchor plate 8 are arranged evenly in multiple numbers along the bridge width direction of the bridge end expansion joint 18, and the spacing is not greater than 250 mm. The substantial technical effects and the implementation process, i.e., the basic functions, of the technical solution herein are as follows: Similar dimensions are within the protection scope of this patent.

[0076] Embodiment 6: As a further improvable solution, parallel solution or alternative independent solution, the outer edge of the connecting anchor plate 1 near the bridge end expansion joint 18 side fits and complements the shape of the left overall ribbed comb tooth plate 2 or the right overall ribbed comb tooth plate 9 and is welded in a fitting manner;

[0077] The vertical distance between the highest point on the top surface of the connecting anchor plate 1 away from the bridge end expansion joint 18 side and the top surfaces of the left overall ribbed comb tooth plate 2 and the right overall ribbed comb tooth plate 9 is greater than 20 mm. The substantial technical effects and the implementation process, i.e., the basic functions, of the technical solution herein are as follows: Similar dimensions are within the protection scope of this patent.

[0078] Embodiment 7: As a further improvable solution, parallel solution or alternative independent solution, the upper left part of the supporting anchor plate 8 includes a U-shaped notch, and the right side surface of the supporting anchor plate 8 includes an L-shaped notch. The substantial technical effects and the implementation process, i.e., the basic functions, of the technical solution herein are as follows: This shape is used to integrate the supporting anchor plate 8 into the overall system.

[0079] Embodiment 8: As a further improvable solution, parallel solution or alternative independent solution, the sliding steel plates 4 are arranged in an overlapping and staggered manner up and down and can slide relative to each other. The length of the sliding steel plates 4 is the same as that of the left overall ribbed comb tooth plate 2 and the right overall ribbed comb tooth plate 9. The substantial technical effects and the implementation process, i.e., the basic functions, of the technical solution herein are as follows: Similar dimensions are within the protection scope of this patent.

[0080] Embodiment Nine: As a further improvable solution, a parallel solution, or an alternative independent solution, the displacement bearing 6 is of a rectangular strip structure, and the length of the displacement bearing 6 is the same as that of the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9; the fixed card slot 7 is of a U-shaped strip structure, and its length is the same as that of the displacement bearing 6. The substantial technical effects achieved by the technical solution herein and its implementation process, i.e., the basic functions, are as follows: Similar dimensions are within the protection scope of this patent.

[0081] As a further preference: The number of interlaced comb teeth increases or decreases according to the length of the integrally rolled portal steel 14 or the integrally rolled π-shaped steel 16 and the designed curve shape 15.

[0082] As a further preference: The length of the integrally rolled portal steel 14 or the integrally rolled π-shaped steel 16 used for cutting the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 in the bridge width direction can be 1000 mm or 3000 mm, and the specific length is determined according to the design requirements of the bridge expansion device.

[0083] As a further preference: The connecting and anchoring plate 1 is of a return-shaped structure with an irregular outer edge. It is in line and welded to the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 on the side close to the bridge beam end expansion joint 18; the vertical distance from the highest point on the top surface on the side far from the bridge beam end expansion joint 18 to the top surfaces of the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 should be greater than 20 mm.

[0084] As a further preference: The water stop 10 is of an elastic structure, and its material can be canvas rubber, natural rubber, high-elastic stainless steel, etc. Its length is the same as the bridge width.

[0085] As a further preference: The concrete casting formwork 11 is of a wooden structure, and its length is the same as the bridge width.

[0086] Innovatively, each of the above effects exists independently, and the combination of the above results can also be achieved with a set of structures.

[0087] As a further preference: The number of interlaced comb teeth increases or decreases according to the length of the integrally rolled portal steel 14 or the integrally rolled π-shaped steel 16 and the designed curve shape 15.

[0088] As a further preference: The length of the integrally rolled portal steel 14 or the integrally rolled π-shaped steel 16 used for cutting the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 in the bridge width direction can be 1000 mm or 3000 mm, and the specific length is determined according to the design requirements of the bridge expansion device.

[0089] As a further preference: The connecting and anchoring plate 1 is a meandering structure with an irregular outer edge. It is in line and closely welded with the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 on the side close to the expansion joint 18 at the bridge beam end. The vertical distance from the highest point on the top surface on the side away from the expansion joint 18 at the bridge beam end to the top surfaces of the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 should be greater than 20 mm.

[0090] As a further preference: The water stop 10 is an elastic structure, and its material can be canvas rubber, natural rubber, high-elastic stainless steel, etc. Its length is the same as the width of the bridge.

[0091] As a further preference: The concrete casting formwork 11 is a wooden structure, and its length is the same as the width of the bridge.

[0092] Generally speaking: The present invention relates to the field of bridge expansion devices, and particularly to an integral anchoring type multi-directional displacement bridge expansion device and an installation method. The expansion device includes a left integral ribbed comb plate 2 and a right integral ribbed comb plate 9 located on both sides of the expansion joint 18 at the bridge beam end and installed in the reserved slot 17 for the beam end expansion device. The left integral ribbed comb plate 2 and the right integral ribbed comb plate 9 are integrally cut and secondarily processed from a portal steel 14 integrally rolled or a π-shaped steel 16 integrally rolled according to a certain curve line shape 15. Round, arc-shaped or trapezoidal chamfers should be provided at the comb teeth ends of the left integral ribbed comb plate 2 and the right integral ribbed comb plate 9, and triangular or quarter-elliptical chamfers should be provided at the comb teeth roots. A displacement bearing 6 is arranged below the right integral ribbed comb plate 9. The present invention can effectively improve the durability of the expansion device and play a role in reducing noise and meeting the requirements of multi-directional displacement of the bridge.

[0093] It should be noted that the multiple solutions provided by this patent include their basic solutions, which are independent of each other and do not restrict each other. However, they can also be combined with each other without conflict to achieve the co-realization of multiple effects.

[0094] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed protection.

Claims

1. An integral anchoring type multi-directional displacement bridge expansion device. The bridge expansion device includes a left integral ribbed comb plate (2) and a right integral ribbed comb plate (9) located on both sides of the expansion joint (18) at the beam end of the bridge and installed in the reserved groove (17) for the beam end expansion device. It is characterized in that, the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9) are integrally cut and secondary processed from integrally rolled portal steel (14) or integrally rolled π-shaped steel (16) according to the curve line shape (15); the rib plates of the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9) form a right angle or an obtuse angle with their respective short side edges, and are respectively welded to the connecting and anchoring plate (1) through the right angle or obtuse angle area; that is, the shapes of the parts where the connecting and anchoring plate (1) fits with the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9) are consistent; the connecting and anchoring plate (1) has a structure with a hole in the middle; sliding steel plates (4) stacked up and down are placed at the lower part of the comb tooth sides of the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9), and the roots of the sliding steel plates (4) are connected to the rib plates of the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9) through fixed angle steels (3); a supporting and anchoring plate (8) is welded to the lower part of the comb tooth side of the right integral ribbed comb plate (9); the upper left part of the supporting and anchoring plate (8) includes a U-shaped notch, and the right side surface of the supporting and anchoring plate (8) includes an L-shaped notch; the L-shaped notch on the right side surface of the supporting and anchoring plate (8) is welded to fit with the vertical rib plate of the right integral ribbed comb plate (9); a fixed clamping groove (7) is welded to the upper left U-shaped notch of the supporting and anchoring plate (8), and a displacement bearing (6) is welded or bonded to the upper part of the fixed clamping groove (7); the top of the displacement bearing (6) fits with the sliding steel plate (4) at the lower part of the right integral ribbed comb plate (9); a strengthening vertical plate (5) is welded to the left side of the supporting and anchoring plate (8); the bottom surface of the vertical rib plate of the left integral ribbed comb plate (2) is on the same plane as the bottom surface of the strengthening vertical plate (5), and a water stop belt (10) and a concrete pouring formwork (11) are respectively placed at the lower part of the strengthening vertical plate (5).

2. The integral anchoring type multi-directional displacement bridge expansion device according to claim 1, characterized in that, The hole in the middle of the connecting and anchoring plate (1) is a rectangular hole, the long side of the rectangular hole is not less than 150 mm, and the short side is not less than 30 mm.

3. The integral anchoring type multi-directional displacement bridge expansion device according to claim 1, characterized in that, The lengths of the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9) in the bridge width direction are 1000 mm - 3000 mm.

4. The integral anchorage type multi-directional displacement bridge expansion device according to claim 1, wherein, The comb tooth ends of the left integral ribbed comb plate (2) and the right integral ribbed comb plate (9) are provided with round, arc or trapezoidal chamfers.

5. The integral anchoring type multi-directional displacement bridge expansion device according to claim 1, characterized in that, The thicknesses of the connecting and anchoring plate (1) and the supporting and anchoring plate (8) are not less than 10 mm. The connecting and anchoring plate (1) and the supporting and anchoring plate (8) are evenly arranged in multiple numbers along the bridge width direction of the bridge beam end expansion joint (18), and the spacing is not greater than 250 mm.

6. The integral anchoring type multi-directional displacement bridge expansion device according to claim 1, characterized in that, The outer edge of the connecting and anchoring plate (1) near the bridge beam end expansion joint (18) side fits and is complementary to the shape of the left integral ribbed comb plate (2) or the right integral ribbed comb plate (9) and is welded in a fitting manner; The vertical distance between the highest point on the top surface of the connecting and anchoring plate (1) away from the side of the expansion joint (18) at the end of the bridge beam and the top surfaces of the left integral ribbed comb plates (2) and the right integral ribbed comb plates (9) is greater than 20 mm.

7. The integral anchoring type multi-directional displacement bridge expansion device according to claim 1, characterized in that, The upper left part of the supporting and anchoring plate (8) includes a U-shaped notch, and the right side surface of the supporting and anchoring plate (8) includes an L-shaped notch.

8. The integral anchoring type multi-directional displacement bridge expansion device according to claim 1, characterized in that, The sliding steel plates (4) are arranged in an overlapping and staggered manner up and down and can slide relative to each other. The length of the sliding steel plates (4) is the same as that of the left integral ribbed comb plates (2) and the right integral ribbed comb plates (9).

9. The integral anchoring type multi-directional displacement bridge expansion device according to claim 1, characterized in that, The displacement bearing (6) is a rectangular strip structure, and the length of the displacement bearing (6) is the same as that of the left integral ribbed comb plates (2) and the right integral ribbed comb plates (9); the fixed card slot (7) is a U-shaped strip structure, and its length is the same as that of the displacement bearing (6).

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