CN217948749U

CN217948749U - Shear connector of steel-concrete composite beam bridge

Info

Publication number: CN217948749U
Application number: CN202222198835.5U
Authority: CN
Inventors: 巨宏亮; 唐小军; 赵健; 程为; 刘志平; 任学志; 尤春颖; 孙刚
Original assignee: China Railway Construction Bridge Engineering Bureau Group Co Ltd
Current assignee: China Railway Construction Bridge Engineering Bureau Group Co Ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-12-02
Anticipated expiration: 2032-08-19

Abstract

The utility model provides a shear force connecting piece of steel-concrete composite beam bridge, including supporting steel plate, a plurality of peg body has been arranged at its top, and the seal groove has been seted up at supporting steel plate's top, and the seal groove tank bottom is seted up threaded hole, and peg body and screw hole match threaded connection, be equipped with first sealing washer in the seal groove, the peg body is equipped with the second sealing washer in the fixed cover of external screw thread portion position department in external screw thread portion top and closely adjacent, the sealed setting of second sealing washer is in first sealing washer. The utility model discloses in, second sealing washer and first sealing washer extrusion deformation reach the effect of sealing up to the screw hole, prevent effectively that the peg body from the corruption of weing, guarantee shear connector shear front degree and rigidity, guarantee steel-concrete composite beam bridge construction stability.

Description

Shear connector of steel-concrete composite beam bridge

Technical Field

The utility model belongs to the technical field of the bridge construction, especially, relate to a shear force connecting piece of steel-concrete composite beam bridge.

Background

The steel-concrete composite beam bridge is a new structure type developed on the basis of steel structure and concrete structure, it is mainly through setting up shear force connecting piece (stud, channel-section steel, curved muscle, etc.) between girder steel and concrete flange plate, resist lifting and relative slip of both in interface department, make it become a whole and common work, steel-concrete composite beam bridge compares with reinforced concrete beam, can lighten the structure dead weight, reduce the earthquake action, reduce cross-sectional dimension, increase effective usage space, save formwork process and template, shorten construction cycle, increase the ductility of roof beam, etc. Compared with steel beams, the steel-concrete composite beam bridge has the advantages that the steel consumption can be reduced, the rigidity is increased, the stability and the integrity are improved, the fire resistance and the durability of the structure are enhanced, and the like.

The shear connector is used for connecting steel and concrete in a composite beam, and is used for sharing shear stress between a concrete wing plate and a steel beam contact surface, limiting slippage between the concrete wing plate and the steel beam, and further avoiding overall instability damage of a structure.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a shear connector of steel-concrete composite beam bridge improves stud connection stability to solve current stud shear connector and connect unstable problem because of shearing strength, the rigidity that wet, corrode and lead to inadequately.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a shear force connecting piece of reinforced concrete combination beam bridge, includes supporting steel plate, has arranged a plurality of peg body by preceding to the back at its top, the seal groove has been seted up at supporting steel plate's top, the seal groove tank bottom threaded hole has been seted up, the peg body is equipped with the external screw thread portion that corresponds with the screw hole, external screw thread portion and screw hole matching thread connect, be equipped with first sealing washer in the seal groove, the peg body is equipped with the second sealing washer in external screw thread portion top and the fixed cover of closely adjacent external screw thread portion position department, the second sealing washer is located first sealing washer, and the periphery is hugged closely sealed to the screw hole in its periphery and the first sealing washer.

Furthermore, the outer circumferential surface of the second sealing ring and the inner circumferential surface of the first sealing ring are of inverted conical surface structures matched with each other.

Further, a plurality of be equipped with locking structure between stud body and the supporting steel plate, locking structure includes:

the swivel that each peg body set up is rotating higher than supporting steel plate position department, and the inserted bar that the vertical downward setting of swivel left and right-hand member difference, supporting steel plate top surface below left and right side is provided with the linkage groove respectively, the socket that the inserted bar lower extreme was seted up through the supporting steel plate top surface inserts to the linkage inslot, the linkage groove is preceding, the rear end is just to being equipped with two sleeves, two be provided with the spring in the sleeve respectively, and the slip is worn to adorn between two sleeves and is connected with the slide bar, the slide bar both ends respectively with the spring butt, the slide bar upwards is equipped with the spacing of L type that a plurality of corresponds separately with an inserted bar, inverts, the horizontal pole portion and the slide bar parallel arrangement of the spacing of L type, spacing mouthful has been seted up to the inserted bar lower part, the horizontal pole portion of the spacing of L type is inserted to in the spacing mouthful.

Further, be equipped with supplementary hold-down mechanism between stud body and the supporting steel plate, supplementary hold-down mechanism:

the pressing plate is arranged between every two adjacent stud bodies, and the front end and the rear end of the pressing plate are respectively provided with a sliding block;

the stud body is equipped with the screw rod installation department in external thread portion side position department, the spout that corresponds with the slider is seted up respectively to lateral wall vertical direction around the screw rod installation department, slider slidable mounting is in the spout, screw rod installation department top threaded connection has two threaded rods, two the threaded rod bottom extends in a spout separately and just right with the slider.

Furthermore, a pressing sheet corresponding to the sliding block is arranged at the bottom end of the threaded rod.

Furthermore, the upper ends of the front and rear side walls of the screw mounting part are respectively provided with a through groove communicated with the sliding groove in the horizontal direction.

Compared with the prior art, a shear force connecting piece of steel-concrete composite beam bridge have following advantage:

(1) The utility model discloses in, second sealing washer and first sealing washer extrusion deformation reach the effect of sealing up to the screw hole, prevent effectively that the peg body from the corruption of weing, guarantee shear connector shear front degree and rigidity, guarantee steel-concrete composite beam bridge construction stability.

(2) The utility model discloses in, the effect that the peg body is fixed is strengthened with locking mechanism's setting to peg body and supporting steel plate, solves because of vibrations lead to the not hard up problem of peg, improves peg body installation stability, guarantees its shear strength and rigidity, further improves steel-concrete composite beam bridge construction stability.

(2) The utility model discloses in, supplementary hold-down mechanism's setting improves the fixed effect of clamp plate bottom reinforcing bar to more excellent assurance reinforced concrete composite beam bridge construction stability.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a front view of a shear connector of a steel-concrete composite beam bridge according to an embodiment of the present invention;

FIG. 2 is a view showing a configuration of a position where the interlocking groove is provided in the present embodiment;

FIG. 3 is a connection structure diagram of the stud body and the supporting steel plate in this embodiment;

FIG. 4 is a view showing an internal structure of the linking groove in the present embodiment;

FIG. 5 is an enlarged view of A in FIG. 2;

description of reference numerals:

1-supporting a steel plate; 101-a seal groove; 2-the stud body; 21-an external threaded portion; 3-a threaded hole; 5-a first sealing ring; 6-a second sealing ring; 7-rotating; 8-inserting a rod; 9-a linkage groove; 10-a sleeve; 11-a spring; 12-a slide bar; 13-L-shaped limit strips; 14-a limiting port; 15-a socket; 16-a chute; 17-a slide block; 18-a platen; 20-a threaded rod; 22-tabletting; 24-screw mounting.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, a shear force connecting piece of reinforced concrete composite beam bridge, including supporting steel plate 1 and peg body 2, supporting steel plate 1 is rectangular plate structure, and peg body 2 is fixed at supporting steel plate 1's top, and peg body 2 evenly is provided with a plurality of along supporting steel plate 1 length direction, and in this embodiment, for the convenience of explanation, with supporting steel plate 1 length direction decide as the fore-and-aft direction, a plurality of peg body 2 is arranged by preceding to back in order. The stud body 2 and the supporting steel plate 1 are connected and fixed to be structured as shown in fig. 3, a sealing groove 101 is formed in the top surface of the supporting steel plate 1 at the position of the mounting stud body 2, a threaded hole 3 is formed in the bottom of the sealing groove 101, the stud body 2 is provided with an external threaded portion 21 corresponding to the threaded hole 3, the external threaded portion 21 extends into the threaded hole 3 to be connected with the threaded hole 3 in a matching manner, and the stud body 2 and the supporting steel plate 1 are connected and fixed. A first sealing ring 5 is arranged in the sealing groove 101, a second sealing ring 6 is fixedly sleeved on the stud body 2 above the external thread part 21 and close to the external thread part 21, the second sealing ring 6 is positioned in the first sealing ring 5, and the outer circumferential surface of the second sealing ring and the inner circumferential surface of the first sealing ring 5 are tightly attached to seal the threaded hole 3. Effectively prevent the cant chisei body and corrode, guarantee shear connector shear strength and rigidity guarantee steel-concrete composite beam bridge construction stability.

Preferably, the outer circumferential surface of the second seal ring 6 and the inner circumferential surface of the first seal ring 5 are of an inverted conical surface structure which is matched with each other, and at the moment, the sealing surface between the second seal ring 6 and the first seal ring 5 is a conical sealing surface, so that the sealing effect between the second seal ring 6 and the first seal ring 5 is improved.

In this embodiment, for improving peg body 2 fixed stability on supporting steel plate 1, be equipped with locking structure between peg body 2 and the supporting steel plate 1, locking structure is: each stud body 2 is equipped with a change 7 through the rotation of bearing spare in the position department that exceeds supporting steel plate 1, and the change 7 left and right ends is vertical respectively downwards to be equipped with an inserted bar 8, and it is perpendicular that two inserted bar 8 lines and a plurality of stud bodies 2 arrange the direction also to go up each change 7, and supporting steel plate 1 top surface below just is provided with a linkage groove 9 respectively on the left and right side of screw hole 3 position, as shown in fig. 2, the lower extreme of inserted bar 8 inserts to linkage groove 9 through the socket 15 that supporting steel plate 1 top surface was seted up, as shown in fig. 4. The front end and the rear end of the linkage groove 9 are rightly provided with two sleeves 10, springs 11 are respectively arranged in the two sleeves 10, a sliding rod 12 is connected between the two sleeves 10 in a sliding penetrating mode, two ends of the sliding rod 12 respectively extend into the sleeves 10 and abut against the springs 11, a plurality of inverted L-shaped limiting strips 13 corresponding to the inserting rods 8 are upwards arranged on the sliding rod 12, cross rod portions of the L-shaped limiting strips 13 are arranged in parallel with the sliding rod 12, and vertical rod portions of the L-shaped limiting strips and the sliding rod 12 are fixedly connected. Spacing mouthful 14 has been seted up to the 8 lower parts of inserted bar, the horizontal pole portion of the spacing strip of L type 13 is inserted to spacing mouthful 14 in, through L type spacing strip 13 with the 8 locking of inserted bar fixed, the axial is promptly fixed with the locking of toggle body 2 and supporting steel plate 1, prevents that toggle body 2 from shaking, improves toggle body installation stability, more excellent improvement its shear strength and rigidity, guarantee steel-concrete composite beam bridge construction stability.

In order to enhance the effect of fixing the steel bar placed on the top of the supporting steel plate 1, in the present embodiment, a pressing plate 18 is disposed between every two adjacent stud bodies 2 in the plurality of stud bodies 2 sequentially arranged from front to back, as shown in fig. 1, the pressing plate 18 is used to assist in pressing and fixing the steel bar on the top of the supporting steel plate 1. The concrete scheme is that the front end and the rear end of each pressure plate 18 are respectively provided with a slide block 17. The stud body 2 is provided with a screw mounting part 24 above the outer thread part 21, the screw mounting part 24 is provided with sliding grooves 16 corresponding to the sliding blocks 17 in the vertical direction of the front and rear side walls, and the sliding blocks 17 are slidably mounted in the sliding grooves 16, as shown in fig. 2 and 5. In order to facilitate the slider 17 to be put into the chute 16, the upper ends of the front and rear side walls of the screw mounting portion 24 are respectively provided with a through groove communicated with the chute 16 in the horizontal direction, and the slider is put into the chute 16 through the through groove. The top of the screw rod installation part 24 is in threaded connection with two threaded rods 20, the bottom ends of the two threaded rods 20 extend into one sliding groove 16 respectively and are opposite to the sliding block 17, the bottom end of the threaded rod 20 is provided with a pressing sheet 22 corresponding to the sliding block 17, and the pressing sheet 22 is preferably a rubber pressing sheet. When the device is used, the threaded rod 20 is manually rotated to drive the pressing piece 22 to descend, the pressing piece 22 presses the sliding block 17 tightly, and then the pressing plate 18 tightly presses and fixes the steel bars on the supporting steel plate tightly.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a shear force connecting piece of steel-concrete composite beam bridge, includes supporting steel plate (1), has arranged a plurality of peg body (2), its characterized in that by preceding to the back at its top: seal groove (101) have been seted up at the top of supporting steel plate (1), threaded hole (3) have been seted up to seal groove (101) tank bottom, external screw thread portion (21) that correspond with screw hole (3) are equipped with in peg body (2), external screw thread portion (21) and screw hole (3) mating thread connect, be equipped with first sealing washer (5) in seal groove (101), peg body (2) are in external screw thread portion (21) top and the fixed cover of department of closely following external screw thread portion (21) position is equipped with second sealing washer (6), second sealing washer (6) are located first sealing washer (5), and its periphery and first sealing washer (5) interior circumference are hugged closely and are sealed to screw hole (3).

2. The shear connector for the steel-concrete composite beam bridge according to claim 1, wherein: the outer circumferential surface of the second sealing ring (6) and the inner circumferential surface of the first sealing ring (5) are of inverted conical surface structures which are matched with each other.

3. The shear connector of the steel-concrete composite beam bridge as claimed in claim 1, wherein: a plurality of be equipped with locking structure between stud body (2) and supporting steel plate (1), locking structure includes:

each peg body (2) is in swivel (7) of the department rotation setting of higher supporting steel plate (1) position, and swivel (7) left and right-hand member vertical inserted bar (8) that set up downwards respectively, supporting steel plate (1) top surface below left and right side is provided with linkage groove (9) respectively, inserted bar (8) lower extreme inserts to linkage groove (9) in through socket (15) that supporting steel plate (1) top surface was seted up, linkage groove (9) front and rear end just are equipped with two sleeve (10), two be provided with spring (11) in sleeve (10) respectively, and the slip cross-under is connected with slide bar (12) between two sleeve (10), slide bar (12) both ends respectively with spring (11) butt, slide bar (12) upwards are equipped with a plurality of and respectively with L type spacing (13) that an inserted bar (8) corresponds, invert, the horizontal and slide bar (12) parallel arrangement of L type spacing (13), type spacing (14) have been seted up to the lower part of inserted bar (8), the spacing portion of L type spacing (13) to interior horizontal pole (14) to the horizontal pole.

4. The shear connector for the steel-concrete composite beam bridge according to claim 1, wherein: be equipped with supplementary hold-down mechanism between stud body (2) and supporting steel plate (1), supplementary hold-down mechanism includes:

a pressure plate (18) is arranged between every two adjacent stud bodies (2), and the front end and the rear end of each pressure plate (18) are respectively provided with a sliding block (17);

the stud body (2) is equipped with screw rod installation department (24) in external thread portion (21) top position department, spout (16) that correspond with slider (17) are seted up respectively to lateral wall vertical direction around screw rod installation department (24), slider (17) slidable mounting is in spout (16), screw rod installation department (24) top threaded connection has two threaded rod (20), two threaded rod (20) bottom extends in a spout (16) separately and just right with slider (17).

5. The shear connector of the steel-concrete composite beam bridge as claimed in claim 4, wherein: the bottom end of the threaded rod (20) is provided with a pressing sheet (22).

6. The shear connector for a steel-concrete composite beam bridge according to claim 4, wherein: and the upper ends of the front and rear side walls of the screw mounting part (24) are respectively provided with a through groove communicated with the sliding groove (16) in the horizontal direction.