CN113818341A - Expansion joint device - Google Patents

Abstract

The invention relates to an expansion joint device, which comprises two supporting seats and a plurality of connecting seats, wherein the connecting seats are sequentially arranged along the length direction of a bridge expansion joint, and each connecting seat is connected between two beam ends of a bridge, so that a supporting surface for bearing is formed; moreover, the both ends of every connecting seat are connected with the supporting seat rotation that corresponds the side through bulb spare respectively, with the help of the rotation effect of bulb like this, no matter produce vertical or horizontal displacement or corner in the end beam portion of bridge both sides, bulb spare can both effectually compensate the removal between the two, all have good offset effect to the moment of torsion that produces even, and collect like this support and adjust the connecting seat of the whole body, the combined design form of bulb spare, the simple time limit for a project of assembly is short, the construction and the maintenance efficiency of bridge have been promoted greatly.

Description

Expansion joint device

Technical Field

The invention relates to the field of bridge expansion joint devices, in particular to an expansion joint device.

Background

The bridge is an open permanent structure spanning over obstacles such as rivers, deep valleys and built roads, the beam end of the bridge can generate creep deformation due to the action of factors such as temperature change, concrete shrinkage and creep deformation, variable load and the like, and in order to adapt to the characteristics of the bridge structure, expansion joints capable of freely deforming are required to be arranged in the bridge structure and between the beam end and a bridge abutment back wall so as to ensure that the bridge deck is smooth and protect the structure. As one of the important functions of bridge construction, bridge expansion joints are usually provided between two beam ends, between a beam end and an abutment, or at the hinge point of a bridge.

Although the conventional expansion joint device of the comb plate can meet the requirements of expansion and deflection of the beam body and the like, the function of a corner of the beam body in the vertical direction is difficult to realize. Therefore, the applicant's prior application "a bridge expansion joint device" discloses such an expansion joint device, and the patent numbers thereof are: CN201821896294.0, this expansion joint device has adopted and has striden seam board and pivot rigid connection, strides the seam board and uses support clamp plate and lower support centre bore as the axis through the pivot and produces the longitudinal rotation, makes this bridge expansion joint device have the longitudinal corner function.

In the prior art, a rotating shaft is adopted to deal with the position change of a bridge in the vertical direction, and a spherical surface matching structure is applied in part. For example, another prior application by the present applicant, which has patent numbers: CN200610051945.1, the invention of China entitled "A bridge expansion joint device with multidirectional displacement", sets a lower support plate under a seam crossing plate, and a plane sliding plate, a middle block and a spherical sliding plate are clamped between the lower support plate and the seam crossing plate, the seam crossing plate can freely displace along with external force, and the width of the seam crossing plate can freely expand and contract when the seam crossing plate expands with heat and contracts with cold, so that the beam body and the seam crossing plate can still keep intact without breaking when the beam body and the seam crossing plate generate multidirectional deformation and relative translation under the action of factors such as air temperature, wind power and the like, thereby realizing the multidirectional displacement resistance. But only through the matching of the spherical sliding plate, the adjustable angle is small, and the bridge under a plurality of severe working conditions can not meet the use requirement; in addition, some related patents disclose the concept of ball joint, such as patent numbers: chinese patent invention CN201822136149.9, "a reinforced expansion joint deformed steel", and patent numbers are: CN 201520235825.1's chinese invention patent "bridge expansion joint", both used the bulb to connect in relevant structural component, but the bulb that both used does not participate in the bearing, and one of them is used for strengthening the support intensity, and the holistic support does not abandon the expansion joint model of broach board formula, and another is the convenience dismantlement. Although the prior art discloses better connection forms such as spherical matching and the like, a special adaptive structure is not provided to effectively solve technical obstacles in bridge construction, some large bridges are influenced by environment, temperature, heavy load, strong wind, ocean current, tide and earthquake in the use process, and besides longitudinal displacement and longitudinal corner, transverse displacement and horizontal corner can be generated, even a part of bridges can generate torque between two end beam parts, which are problems to be solved.

In summary, the conventional bridge expansion joint device is further improved.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide an expansion joint device which adopts a ball head piece to connect at the connecting position to cope with the displacement of the bridge in all directions, aiming at the current situation of the prior art.

The second technical problem to be solved by the present invention is to provide an expansion joint device capable of effectively supporting the vertical direction and the lateral direction of a ball head piece, aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides an expansion joint device, includes two supporting seats of locating respectively on bridge expansion joint both sides end roof beam portion, still includes:

the connecting seats are sequentially arranged along the length direction of the bridge expansion joint, and two ends of each connecting seat are respectively and rotatably connected with the corresponding side of the supporting seat through a ball head piece; each connecting socket is located between two beam ends and the respective connecting socket as a whole forms a support surface for load bearing between the two beam ends.

The ball head piece can be in different assembling forms, preferably, the ball head piece comprises a body and a ball head arranged on the body, the body is arranged at the bottom of the connecting seat, a limiting groove for the ball head to rotate and limit in the connecting seat is formed in the position, corresponding to the ball head, of the supporting seat, the ball head piece can also be arranged on the supporting seat, the adjustment between the two end beam parts of the bridge is realized through the matching of the connecting seat and the ball head piece, and different alternative schemes can be selected according to different bridge use scenes in actual construction.

In order to ensure that when the beam portions at the two sides of the bridge generate vertical movement or corners, the connecting seat and the bottom portion have enough adjusting clearance, preferably, the body is rod-shaped and extends vertically, and the connecting seat is provided with a mounting hole matched with the body.

Preferably, the extension lines of the two bodies in the length direction of the two bodies are intersected above the connecting seat, so that the connecting seat and the ball head piece can effectively compensate the distance difference generated by the movement when the beam parts at the two sides of the bridge generate transverse movement, corner rotation or twisting in the design form of the bodies, and the integrity of the beam parts at the two sides of the bridge is ensured.

The assembly form of the connecting seat and the supporting seat can be various, preferably, the longitudinal section of the supporting seat is L-shaped, so that a concave area is limited between two right-angle sides of the L shape, and the limiting groove is formed in the concave area.

In order to further solve the second technical problem, the invention adopts the following technical scheme: the limiting groove is formed in the corner of the L-shaped supporting seat, and a gap is reserved between the connecting seat and two right-angle sides of the corresponding depressed area in the state that the ball head is assembled in the corresponding limiting groove. The position design of spacing groove like this, can ensure bulb spare and supporting seat when the assembly, the corner of supporting seat carries out powerful support to the assembly of connecting seat and bulb spare, because the body of two bulb spares is crossing in the top of connecting seat at the ascending extension line of self length direction, therefore, the external force that acts on the connecting seat can be by the effectual decomposition of bulb spare, and share by two right-angle sides of supporting seat respectively, so, this component of supporting seat itself does not need the very high intensity just can deal with complicated bridge floor bearing demand, requirement greatly reduced to material economic cost and assembly form.

The supporting seats can be integrally formed, but in order to facilitate replacement and maintenance in a targeted manner when damaged, preferably, two ends of each connecting seat are respectively provided with a seat body, the seat bodies arranged on the same side are connected to form one supporting seat, and each seat body is provided with the limiting groove.

Preferably, each of the seat bodies includes a bottom plate and a side plate, the side plate is disposed on the bottom plate and is disposed on one side of the bottom plate, so that the longitudinal section of the entire seat body is L-shaped, the limiting groove includes a first groove section formed on a lower portion of the side plate and a second groove section formed on an upper portion of the bottom plate, and the first groove section and the second groove section are joined at a corner of the L-shape.

Specifically, the first groove section and the second groove section are both arc-shaped structures which are matched with the ball heads and are concave inwards.

In order to ensure that the whole expansion joint device can timely respond to the change of the bridge in the expansion and contraction movement of the bridge, the expansion joint device also comprises a guide piece arranged on at least one of the end beam parts at two sides of the bridge expansion joint, the guide piece extends along the length direction of the bridge expansion joint, and each seat body is slidably constrained on the corresponding guide piece.

Specifically, the guide member is an i-shaped steel, and a T-shaped groove for inserting the i-shaped steel is correspondingly formed in the bottom of each bottom plate.

In order to facilitate the disassembly and assembly of the ball head piece, preferably, the connecting seat further comprises a limiting piece for limiting the body to be separated from the mounting hole, and the limiting piece is arranged in the mounting hole and is detachably connected with the upper end of the body.

Specifically, the locating part is a nut, and the upper end of the body is correspondingly provided with a threaded part.

Preferably, the installation hole is internally provided with a dustproof piece which is disc-shaped and sleeved on the body, and the outer diameter of the dustproof piece is gradually increased from top to bottom.

Compared with the prior art, the invention has the advantages that: in the expansion joint device, a plurality of connecting seats are sequentially arranged along the length direction of a bridge expansion joint, and each connecting seat is connected between two beam ends of a bridge and forms a supporting surface for bearing; therefore, the support seat can replace a comb structure of the traditional expansion joint, and the position between the two end beam parts of the bridge plays a role in bearing; moreover, the both ends of every connecting seat are connected with the supporting seat rotation that corresponds the side through bulb spare respectively, with the help of the rotation effect of bulb like this, no matter produce vertical or horizontal displacement or corner in the end beam portion of bridge both sides, bulb spare can both effectually compensate the removal between the two, all have good offset effect to the moment of torsion that produces even, and collect like this support and adjust the connecting seat of the whole body, the combined design form of bulb spare, the simple time limit for a project of assembly is short, the construction and the maintenance efficiency of bridge have been promoted greatly.

Drawings

Fig. 1 is a schematic view of an overall structure of an expansion joint device in an embodiment of the present invention;

FIG. 2 is an exploded view from another angle of FIG. 1;

FIG. 3 is an enlarged schematic view of a portion of the structure of FIG. 2;

fig. 4 is a side sectional view of the expansion joint device in the embodiment of the present invention;

FIG. 5 is a side cross-sectional view of a support base according to an embodiment of the invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 5, a preferred embodiment of the present invention. In this embodiment, the expansion joint device includes two support bases 1 and a plurality of connection bases 2. The two support seats 1 are respectively arranged on beam parts at two side ends of the bridge expansion joint, and the support seats 1 can be a complete whole and can also be formed by splicing a plurality of smaller units. For convenience of maintenance, the mode of splicing a plurality of units is preferred in actual construction. For example, two ends of each connecting seat 2 are provided with a seat body 10, and the seat bodies 10 arranged on the same side are connected to form one supporting seat 1.

In this embodiment, the expansion joint device further includes a guiding member 4, the guiding member 4 extends along the length direction of the bridge expansion joint, and at least one end beam portion of the two side beam portions of the bridge expansion joint is provided with the guiding member 4, and each of the seat bodies 10 is slidably constrained on the corresponding guiding member 4. The matching form of the base 10 and the guide base 4 can ensure that the base 10 as an important component of the expansion joint device can timely cope with the change of the bridge when the bridge changes. Of course, the guide 4 may adopt different structural forms, the guide 4 in this embodiment is an i-beam, and a T-shaped groove 121 for inserting the i-beam is correspondingly formed at the bottom of each bottom plate 12, where the T-shaped groove refers to a groove with a T-shaped longitudinal section.

The connecting seats 2 are sequentially arranged along the length direction of the bridge expansion joint, and for each connecting seat 2, two ends of the connecting seat are respectively and rotatably connected with the corresponding side supporting seat 1 through a ball head piece 3; and the upper surface of each connecting socket 2 is engaged between the two beam ends, and the respective connecting socket 2 as a whole forms a support surface for load bearing between the two beam ends. The connecting seats 2 replace the traditional comb plate structure, are directly paved on a bridge floor and are used for bearing.

Certainly ball head spare 3 can be selectively installed on one of them in supporting seat 1 and connecting seat 2, but because in the work progress, supporting seat 1 often is pre-buried in the end beam portion of bridge both sides, consequently if locate supporting seat 1 with ball head spare 3 on, the required part of dismantling of later maintenance construction is more, is unfavorable for the maintenance construction. Therefore, in this embodiment, the ball head piece 3 includes a body 31 and a ball head 32 disposed on the body 31, the body 31 is mounted at the bottom of the connecting seat 2, the supporting seat 1 is formed with a limiting groove 11 corresponding to the ball head 32 for the ball head 32 to rotate and limit therein, because the supporting seat 1 is formed by splicing a plurality of seat bodies 10, the embodiment adopts a design form in which the seat bodies 10 correspond to the limiting grooves 11 one to one, that is, the limiting groove 11 is formed on each seat body 10.

Specifically, the longitudinal cross section of the support seat 1 in this embodiment is L-shaped (the longitudinal cross section of the seat body 10 that is spliced to form the support seat 1 is the same as that of the support seat 1, and is also L-shaped), so that a recessed area 1b is defined between two perpendicular sides of the L-shape, and the above-mentioned limiting groove 11 is opened in the recessed area 1 b. Of course, the seat body 10 spliced to form the support seat 1 may also be designed into two structural forms, namely, an integral piece and a separate piece, the seat body 10 in this embodiment may be divided into two parts, that is, the bottom plate 12 and the side plate 13 shown in fig. 5, as can be seen from the above, since the longitudinal section of the seat body 10 is also L-shaped, the side plate 13 is disposed on one side of the bottom plate 12, and the longitudinal sections of the two form two L-shaped right-angle sides, respectively. The limiting groove 11 is formed at the corner of the L-shaped supporting seat 1, which means that the limiting groove 11 is actually formed by splicing the first groove section 111 formed on the side plate 13 and the second groove section 112 formed on the bottom plate 12, and certainly, in order to ensure the assembly of the ball head 32, the whole limiting groove 11 is a spherical groove adapted to the ball head 32, that is, the first groove section 111 and the second groove section 112 are both arc-shaped structures matching the ball head 32 and concave. And under the state that the bulb 32 is assembled in the corresponding limiting groove 11, a gap 1a is left between the two right-angle sides of the connecting seat 2 and the corresponding recessed area 1b, so that when adjusting, the connecting seat 2 has enough spacious space for the movement thereof to deal with the vertical and horizontal movement of the beam parts at the two sides of the bridge and also deal with the twisting movement generated by the two.

Of course, the ball head piece 3 may have different structures as long as the assembly between the connecting seat and the supporting seat can be realized, but in this embodiment, the body 31 is rod-shaped and extends vertically, and the connecting seat 2 is provided with the mounting hole 21 matched with the body 31. The vertical direction mentioned here includes vertical, but is not limited to vertical, for example, in actual production, extension lines of the two bodies 31 in the length direction thereof intersect above the connecting seat 2. Such a design has many advantages, one of which is that when the beam portions at both sides of the bridge move laterally, turn or twist, the connecting seat 2 and the ball head member 3 can effectively compensate for the difference in distance caused by the movement, thereby ensuring the integrity of the beam portions at both sides of the bridge. And just because the assembly like this of bulb spare 2 makes two bulbs at connecting seat 2 both ends 3 and the production contained angle between the connecting seat 2, the corner of supporting seat 1 just can carry out strong support to the combination body of connecting seat 2 and bulb spare 3 like this. Because the extension line of body 31 on self length direction of two bulb pieces 3 intersects in the top of connecting seat 2 promptly, consequently, the external force that acts on connecting seat 2 can be by the effectual decomposition of bulb piece 3 to share by two right-angle sides of supporting seat 1 respectively, so, this component of supporting seat 1 itself does not need intensity high very much just can deal with complicated bridge floor bearing demand, to the requirement greatly reduced of material economic cost and assembly form.

In addition, for a single ball head piece 3, a certain included angle is formed between the single ball head piece and the connecting seat 2, namely the ball head piece 3 is inclined relative to the connecting seat 2, when two end beam parts of the bridge move transversely or twist, the seat body 10 can slide relative to the I-shaped steel, the inclined arrangement mode can prevent the single connecting seat 2 from turning over when moving, and the connecting seat 2 is ensured to be used as a part of a road surface, and the stability and the smoothness of the connecting seat are ensured.

In this embodiment, the connecting base 2 further includes a limiting member 22 for limiting the body 31 to be separated from the mounting hole 21, and the limiting member 22 is disposed in the mounting hole 21 and detachably connected to the upper end of the body 31. The position limiting member 22 may take different forms, in this embodiment, the position limiting member 22 is a nut, the upper end of the body 31 is correspondingly provided with a threaded portion, and in order to avoid the nut from being corroded by wind, sunlight, rain, etc., a dust-proof member 23 is disposed in the mounting hole 21, the dust-proof member 23 is disc-shaped and is sleeved on the body 31, and the outer diameter of the dust-proof member gradually increases from top to bottom.

Also, directional terms, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like, may be used in the description and claims to describe various example structural portions and elements of the invention, but are used herein for convenience of description only and are determined based on the example orientations shown in the figures. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims (10)

1. The utility model provides an expansion joint device, includes two supporting seats (1) of locating respectively on bridge expansion joint both sides end roof portion, its characterized in that still includes:

the connecting seats (2) are sequentially arranged along the length direction of the bridge expansion joint, and two ends of each connecting seat (2) are respectively and rotatably connected with the corresponding side supporting seat (1) through a ball head piece (3); each connecting socket (2) is located between two beam ends, and the respective connecting socket (2) as a whole forms a support surface for load bearing between the two beam ends.

2. An expansion joint arrangement according to claim 1, wherein: the ball head piece (3) comprises a body (31) and a ball head (32) arranged on the body (31), the body (31) is installed at the bottom of the connecting seat (2), and a limiting groove (11) for the ball head (32) to rotate and limit in the position is formed in the position, corresponding to the ball head (32), of the supporting seat (1).

3. An expansion joint arrangement according to claim 2, wherein: the body (31) is rod-shaped and vertically extends, and the connecting seat (2) is provided with a mounting hole (21) matched with the body (31).

4. An expansion joint arrangement according to claim 3, wherein: the extension lines of the two bodies (31) in the length direction of the bodies intersect above the connecting seat (2).

5. An expansion joint arrangement according to claim 4, wherein: the longitudinal section of the supporting seat (1) is L-shaped, so that a concave area (1b) is defined between two right-angle sides of the L shape, and the limiting groove (11) is arranged in the concave area (1 b).

6. An expansion joint arrangement according to claim 5, wherein: spacing groove (11) are seted up the corner of L type supporting seat (1) ball head (32) assemble under corresponding spacing groove (11) the state, all leave clearance (1a) between two right-angle sides of connecting seat (2) and the depressed area that corresponds.

7. An expansion joint arrangement according to claim 6, wherein: the two ends of each connecting seat (2) are respectively provided with a seat body (10), the seat bodies (10) arranged on the same side are connected to form one supporting seat (1), and each seat body (10) is provided with a limiting groove (11).

8. An expansion joint arrangement according to claim 7, wherein: each seat body (10) comprises a bottom plate (12) and side plates (13), the side plates (13) are arranged on the bottom plate (12) and are arranged on one side of the bottom plate (12), so that the longitudinal section of the whole seat body (10) is L-shaped, the limiting groove (11) comprises a first groove section (111) formed at the lower part of the side plate (13) and a second groove section (112) formed at the upper part of the bottom plate (12), the first groove section (111) and the second groove section (112) are connected at the corner of the L-shaped, and the first groove section (111) and the second groove section (112) are both arc-shaped structures which are matched with the ball head (32) and are concave inwards.

9. An expansion joint arrangement according to claim 8, wherein: the bridge expansion joint is characterized by further comprising a guide piece (4) arranged on at least one of the end beam parts at two sides of the bridge expansion joint, wherein the guide piece (4) extends along the length direction of the bridge expansion joint, and each seat body (10) is slidably constrained on the corresponding guide piece (4); the guide pieces (4) are made of I-shaped steel, and T-shaped grooves (121) for inserting the I-shaped steel are correspondingly formed in the bottoms of the base plates (12).

10. An expansion joint arrangement according to any one of claims 3 to 9, wherein: the two connecting seats (2) are also provided with limiting pieces (22) used for limiting the body (31) to be separated from the mounting hole (21), and the limiting pieces (22) are arranged in the mounting hole (21) and are detachably connected with the upper end of the body (31).

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