CN219731659U

CN219731659U - Bridge slab beam and bench back connection structure

Info

Publication number: CN219731659U
Application number: CN202321313914.4U
Authority: CN
Inventors: 杭欢
Original assignee: Shanghai Zhijing Municipal Construction Planning Design Co ltd
Current assignee: Shanghai Zhijing Municipal Construction Planning Design Co ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-09-22
Anticipated expiration: 2033-05-26

Abstract

The utility model relates to the technical field of bridge structures, in particular to a bridge plate girder and bench back connection structure, which comprises a plate girder body and a bench back body positioned at one side of the plate girder body, wherein an expansion joint is arranged between the plate girder body and the bench back body, backing pieces are arranged on the plate girder body and the bench back body, the length direction of each backing piece is parallel to the length direction of the expansion joint, an elastic filling plate filled in the expansion joint is arranged between the plate girder body and the bench back body, and an elastic sealing strip positioned above the elastic filling plate for sealing the expansion joint is arranged between the two backing pieces. The utility model has the effect of reducing the construction period of the expansion joint.

Description

Bridge slab beam and bench back connection structure

Technical Field

The utility model relates to the technical field of bridge structures, in particular to a bridge slab beam and bench back connection structure.

Background

Bridge is a structure which is generally erected on rivers, lakes and seas and can smoothly pass vehicles, pedestrians and the like. In order to adapt to the traffic industry of modern high-speed development, bridges are also spreading to span mountain stream, poor geology or buildings which are erected to meet other traffic needs and enable the traffic to be more convenient. The roadbed on the back of the bench refers to a roadbed at the connection part between the back of the structure and the road, and the roadbed on the back of the bench is filled with soil and reinforced by geosynthetic materials generally so as to reduce uneven settlement between the roadbed and the structure. In order to ensure the stability of the bridge structure, an expansion joint structure is usually arranged between the bridge slab beam and the back subgrade.

With respect to the related art in the above, there are the following drawbacks: in the prior art, the sealant is filled into the expansion joint, so that the construction period of the sealant is long, and further improvement is needed.

Disclosure of Invention

In order to effectively reduce the construction period of an expansion joint, the utility model provides a bridge slab beam and bench back connection structure.

The utility model provides a bridge plate girder and bench back connection structure which adopts the following technical scheme:

the utility model provides a bridge slab beam and bench back connection structure, includes slab beam body and is located the bench back body of slab beam body one side, has the expansion joint between slab beam body and the bench back body, and slab beam body and bench back body all are provided with back lining member, and back lining member's length direction is on a parallel with the length direction of expansion joint, is provided with between slab beam body and the bench back body and fills in the elasticity of expansion joint and fill the board, two be provided with between the back lining member and be located elasticity fill the board top in order to carry out the elastic seal of shutoff to the expansion joint.

Through adopting above-mentioned technical scheme, place the elasticity filling board in the expansion joint, guaranteed to have good flexible deformation performance between adjacent slab beam body and the bench back body, replace traditional filling sealing gum mode, effectively shorten the construction cycle of expansion joint, add the back lining piece and provide the installation carrier for the elasticity strip of paper used for sealing, the elasticity strip of paper used for sealing is plugged the expansion joint and is covered the elasticity filling board, effectively reduce the elasticity and fill the board and directly expose in external possibility, delay the elasticity and fill the board and take place the possibility of corruption, ageing.

Preferably, the back lining member is provided with a clamping groove, and two sides of the elastic seal are convexly provided with clamping protrusions which are clamped in the clamping groove.

Through adopting above-mentioned technical scheme, set up draw-in groove and card protruding, realize the joint of elastic seal and backing member, the dismouting of elastic seal and backing member of being convenient for.

Preferably, the slab beam body and the bench back body are both provided with a concrete reserved groove communicated with the expansion joint, the backing member is arranged on one side of the concrete reserved groove close to the expansion joint, the concrete reserved groove is provided with an embedded part, and the backing member is fixedly connected with the embedded part through a fixing part.

Through adopting above-mentioned technical scheme, the back lining piece passes through mounting fixed connection in the built-in fitting to realize the fixed connection of back lining piece and slab beam body/bench back body.

Preferably, the embedded part comprises a plurality of embedded bars which are embedded in the slab beam body/the bench back body and extend to the concrete reserved groove, the embedded bars are provided with a plurality of embedded bars, the length direction of the embedded bars is parallel to the length direction of the expansion joint, the fixing part comprises an anchoring stirrup fixedly connected with the back lining part, and the anchoring stirrup is at least fixedly sleeved with the two embedded bars.

Through adopting above-mentioned technical scheme, anchor stirrup fixed connection is in back lining piece, and anchor stirrup fixed cover locates the embedded bar, realizes the fixed connection of back lining piece and slab beam body/bench back body.

Preferably, the anchoring stirrups are provided with a plurality of and evenly distributed along the length direction of the back lining piece.

Through adopting above-mentioned technical scheme, anchor stirrup is provided with a plurality ofly, improves the connection stability of backing member and slab beam body/bench back body.

Preferably, the embedded part further comprises embedded stirrups embedded in the plate girder body/the bench back body, the embedded stirrups are fixedly sleeved on the embedded bars, and the embedded stirrups are provided with a plurality of embedded stirrups and distributed along the length direction of the embedded bars.

Through adopting above-mentioned technical scheme, add pre-buried stirrup, pre-buried stirrup fixed cover is located the pre-buried bar, improves the structural strength of pre-buried bar to further improve the connection stability of back lining spare and slab beam body/bench back body.

Preferably, the embedded stirrup and the anchoring stirrup are bound and fixed through an iron wire or a binding rope.

Through adopting above-mentioned technical scheme, anchor stirrup is fixed in pre-buried stirrup, improves the structural stability of anchor stirrup to further improve the connection stability of back lining spare and slab beam body/bench back body.

Preferably, the elastic filler plate is a polystyrene plate.

By adopting the technical scheme, the polystyrene board is filled with air by more than 98% in the polystyrene board, so that the board body has good recovery effect and elasticity when being subjected to external force, and has good impact resistance and bending resistance.

Preferably, the bottom wall of the concrete reserved groove is provided with a positioning hole, and the backing member is provided with a positioning column inserted into the positioning hole in a protruding mode.

By adopting the technical scheme, the positioning holes and the positioning columns are additionally arranged, so that the positioning and the installation of the backing piece are realized, and the possibility of horizontal displacement of the backing piece is reduced.

In summary, the utility model has the following beneficial effects:

1. the elastic filling plate is placed in the expansion joint, good expansion deformation performance is guaranteed between the adjacent plate girder body and the bench back body, a traditional sealing glue filling mode is replaced, the construction period of the expansion joint is effectively shortened, the backing piece is additionally arranged to provide an installation carrier for the elastic sealing strip, the elastic sealing strip is used for plugging the expansion joint and covering the elastic filling plate, the possibility that the elastic filling plate is directly exposed to the outside is effectively reduced, and the possibility that the elastic filling plate is corroded and aged is delayed;

2. positioning holes and positioning columns are additionally arranged, positioning and mounting of the backing piece are achieved, and the possibility of horizontal displacement of the backing piece is reduced.

Drawings

FIG. 1 is a schematic cross-sectional view of a bridge girder and back connection structure in example 1;

fig. 2 is a schematic structural diagram of the pre-embedded stirrup in embodiment 1;

fig. 3 is a schematic view showing a connection structure of the elastic seal and the elastic filler plate in example 2.

In the figure, 1, a plate girder body; 2. a table back body; 3. an expansion joint; 4. a concrete reserved groove; 41. positioning holes; 5. a backing member; 51. a clamping groove; 52. positioning columns; 53. an anchor stirrup; 6. an embedded part; 61. embedding reinforcing steel bars; 62. pre-burying stirrups; 621. vertical steel bars; 622. transverse steel bars; 623. reinforcing transverse ribs; 63. an iron wire; 7. an elastic filler plate; 71. a connecting groove; 72. a plug-in groove; 73. a limit groove; 8. an elastic seal; 81. a clamping protrusion; 82. a clamping column; 83. plugging column heads; 84. a limiting head.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

Example 1:

the embodiment of the utility model discloses a bridge plate girder and bench back connection structure, referring to fig. 1, comprising a plate girder body 1 and a bench back body 2 positioned at one side of the plate girder body 1, wherein an expansion joint 3 is arranged between the plate girder body 1 and the bench back body 2.

Referring to fig. 1, a concrete reserved groove 4 is formed in the upper end face of the plate girder body 1 and the upper end face of the bench back body 2, and the concrete reserved groove 4 extends to the expansion joint 3. The plate girder body 1 and the bench back body 2 are both provided with backing pieces 5, specifically, the backing pieces 5 are steel bars, the two backing pieces 5 are positioned on two sides of the expansion joint 3, and the length direction of the backing pieces 5 is parallel to the length direction of the expansion joint 3. The inner bottom wall of the concrete reserved groove 4 is vertically provided with positioning holes 41, the positioning holes 41 are distributed along the length direction of the expansion joint 3, and the lower end face of the backing member 5 is fixedly protruded with positioning columns 52 inserted into the positioning holes 41.

Referring to fig. 1 and 2, the slab beam body 1 and the back body 2 are both provided with embedded parts 6, and the back body 2 is used for illustration, and the embedded parts 6 include a plurality of embedded bars 61 and embedded stirrups 62 embedded in the back body 2 and extending to the concrete pre-groove 4. The embedded bars 61 are arranged in a plurality, and the length direction of the embedded bars 61 is parallel to the length direction of the expansion joint 3. The embedded stirrups 62 are provided with a plurality of and are distributed along the length direction of the expansion joint 3, each embedded stirrup 62 comprises a pair of vertical bars 621 fixedly connected to the bench back body 2, a transverse bar 622 fixedly connected between the upper parts of the two vertical bars 621 and a reinforcing transverse bar 623 fixedly connected to the lower part of the vertical bar 621, and the length direction of the reinforcing transverse bar 623 is parallel to the length direction of the transverse bar 622. The upper portion of vertical reinforcing bar 621 extends to concrete reserve tank 4, and a plurality of embedded bars 61 are located between two vertical reinforcing bars 621, and horizontal reinforcing bar 622 butt is in the upper perisporium of embedded bar 61.

The back lining piece 5 is fixedly connected to the embedded piece 6 through a fixing piece, the fixing piece is fixedly connected to the anchor stirrups 53 of the back lining piece 5, the anchor stirrups 53 are arranged in a plurality of mode and distributed along the length direction of the embedded bars 61, the anchor stirrups 53 are arranged in a U-shaped mode, the anchor stirrups 53 are at least sleeved on the two embedded bars 61, the end portions of the anchor bars are fixedly connected to the outer side walls of the back lining piece 5, and the anchor stirrups 53 and the embedded bars 61 are fixed through welding. The plurality of anchor stirrups 53 and the plurality of embedded stirrups 62 are arranged in a staggered manner, the adjacent embedded stirrups 62 and the anchor stirrups 53 are bound and fixed through iron wires 63 or binding ropes, and in the embodiment, the anchor stirrups 53 and the transverse steel bars 622 on the embedded stirrups 62 are bound and fixed through the iron wires 63.

An elastic filling plate 7 filled in the expansion joint 3 is arranged between the plate girder body 1 and the bench back body 2, the elastic filling plate 7 is positioned below the backing piece 5, and specifically, the elastic filling plate 7 is a polystyrene plate. An elastic sealing strip 8 positioned above the elastic filling plate 7 to seal the expansion joint 3 is arranged between the two backing members 5, specifically, the elastic sealing strip 8 is a rubber strip, a clamping groove 51 is formed in one side opposite to the backing members 5, and clamping protrusions 81 clamped in the clamping groove 51 are integrally protruded from two sides of the elastic sealing strip 8.

The implementation principle of the bridge slab beam and bench back connection structure provided by the embodiment of the utility model is as follows: after the back lining piece 5 is assembled, the elastic filling plate 7 is placed in the expansion joint 3, then the elastic sealing strip 8 is installed, the expansion joint 3 is plugged by the elastic sealing strip 8, the elastic filling plate 7 is covered, the possibility that the elastic filling plate 7 is directly exposed to the outside is effectively reduced, the possibility that the elastic filling plate 7 is corroded and aged is delayed, and finally C50 steel fiber concrete is poured in the concrete reserved groove 4.

Example 2: the difference from embodiment 1 is that, referring to fig. 3, a connecting groove 71 is formed in the middle of the upper end surface of the elastic filling plate 7, the connecting groove 71 includes a plugging groove 72 formed on the upper end surface of the elastic filling plate 7, and a limiting groove 73 located below the plugging groove 72 and communicated with the plugging groove 72, and the diameter of the limiting groove 73 is larger than that of the plugging groove 72. The middle lower end surface of the elastic sealing strip 8 is convexly provided with a clamping column 82, the clamping column 82 comprises a plug-in column head 83 fixedly connected to the middle lower end surface of the elastic sealing strip 8 and adapted to the plug-in groove 72, and a limit head 84 fixedly connected to the plug-in column head 83 and adapted to be embedded in the limit groove 73, and the clamping column 82 and the elastic sealing strip 8 are integrally formed. The clamping column 82 is inserted into the connecting groove 71, so that the connection stability of the elastic seal 8 and the elastic filling plate 7 is improved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. Bridge slab beam and bench back connection structure, its characterized in that: including roof beam body (1) and be located the bench back body (2) of roof beam body (1) one side, have expansion joint (3) between roof beam body (1) and bench back body (2), roof beam body (1) and bench back body (2) all are provided with back lining member (5), and the length direction of back lining member (5) is on a parallel with the length direction of expansion joint (3), is provided with between roof beam body (1) and bench back body (2) to fill in elasticity filling plate (7) of expansion joint (3), two be provided with between back lining member (5) and be located elasticity filling plate (7) top in order to carry out elastic seal (8) of shutoff to expansion joint (3).

2. The bridge girder and counter back connection structure according to claim 1, wherein: the back lining piece (5) is provided with a clamping groove (51), and clamping protrusions (81) clamped in the clamping groove (51) are arranged on two sides of the elastic seal (8) in a protruding mode.

3. The bridge girder and counter back connection structure according to claim 1, wherein: the concrete pre-arranged groove (4) communicated with the expansion joint (3) is formed in the plate girder body (1) and the bench back body (2), the back lining member (5) is arranged on one side, close to the expansion joint (3), of the concrete pre-arranged groove (4), the pre-arranged groove (4) is provided with an embedded part (6), and the back lining member (5) is fixedly connected to the embedded part (6) through a fixing part.

4. A bridge girder and counter back connection structure according to claim 3, wherein: the embedded part (6) comprises a plurality of embedded bars (61) which are embedded in the slab beam body (1)/the bench back body (2) and extend to the concrete reserved groove (4), the embedded bars (61) are provided with a plurality of embedded bars, the length direction of the embedded bars (61) is parallel to the length direction of the expansion joint (3), the fixing part comprises an anchoring stirrup (53) fixedly connected with the back lining part (5), and the anchoring stirrup (53) is at least fixedly sleeved on the two embedded bars (61).

5. The bridge girder and counter back connection structure according to claim 4, wherein: the anchoring stirrups (53) are provided with a plurality of and are evenly distributed along the length direction of the back lining piece (5).

6. The bridge girder and counter back connection structure according to claim 4, wherein: the embedded part (6) further comprises embedded stirrups (62) embedded in the plate girder body (1)/the bench back body (2), the embedded stirrups (62) are fixedly sleeved on the embedded bars (61), and the embedded stirrups (62) are provided with a plurality of embedded bars (61) and distributed along the length direction of the embedded bars (61).

7. The bridge girder and counter back connection structure according to claim 6, wherein: the embedded stirrup (62) and the anchoring stirrup (53) are bound and fixed through an iron wire (63) or a binding rope.

8. The bridge girder and counter back connection structure according to claim 1, wherein: the elastic filling plate (7) is a polyphenyl plate.

9. A bridge girder and counter back connection structure according to claim 3, wherein: the bottom wall of the concrete reserved groove (4) is provided with a positioning hole (41), and the backing piece (5) is convexly provided with a positioning column (52) inserted into the positioning hole (41).