CN211057597U

CN211057597U - Precast bridge bearing bent cap with firm structure

Info

Publication number: CN211057597U
Application number: CN201921708741.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Xuzhou City Luxing Highway Engineering Co ltd
Current assignee: Xuzhou City Luxing Highway Engineering Co ltd
Priority date: 2019-10-13
Filing date: 2019-10-13
Publication date: 2020-07-21
Anticipated expiration: 2029-10-13

Abstract

The utility model provides a firm prefabricated bridge bears bent cap of structure, its hookup location with the pier of bridge possesses higher structural strength after the construction is accomplished, and it is convenient to be under construction, including the roof beam body, the wing body, the roof beam body is rectangular structure, the wing body is fixed the both sides that set up at the roof beam body respectively, the downside position of the roof beam body is provided with multichannel cuboid form notch, the intermediate position upper portion of notch is provided with the hole of pouring into on the roof beam body, the bottom and the notch of pouring into the hole link up, the top link up with the up end of the roof beam body, the both sides of horizontal reinforcing bar penetrate the roof beam body inside of fixing in the notch both sides, the combination of integration is strengthened to the horizontal reinforcing bar at notch position, make the contact support area of pier and bent cap enlarge, improve the steadiness and the support intensity of support, the structure shape and size of bent cap part is unified basically, can accelerate the construction.

Description

Precast bridge bearing bent cap with firm structure

Technical Field

The utility model relates to a bridge construction technical field especially relates to a firm prefabricated bridge bearing bent cap of structure.

Background

The former bridge usually spans the river surface and connects the roads on both sides of the river, but the construction of the bridge is more and more common now, because of different ground height differences and different landforms, directly paving the road on the ground can cause the road surface to have larger fluctuation and influence the driving quality, in addition, the expansion and contraction of the roadbed can directly influence the road surface, which is easy to cause cracking, in addition, the ground used in the city is tense, in order to improve the traffic efficiency, the form of the express way appears, the construction of the road usually needs to adopt the bridge form, the bridge mainly comprises bridge piers, capping beams, bridge spans and auxiliary structures, because the ground height differences are not uniform, the landforms are complex, therefore, the bridge piers can not adopt the prefabricated component form, the bridge piers with different heights and forms must be manufactured by cast-in-place construction, the structural forms of the capping beams and the bridge spans are uniform, and are, however, the connection part of the coping and the pier is still a construction difficulty, and because the bending moment force existing at the connection structure part is large, and the connection part is the joint of the cast-in-place member and the prefabricated member, the quality problem is easy to occur, meanwhile, the construction difficulty is brought, and the problem can be improved by considering the design of the coping.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a prefabricated bridge bearing bent cap with firm structure, the connecting position of the prefabricated bridge bearing bent cap and a bridge pier has higher structural strength after construction is completed, and construction is convenient, the prefabricated bridge bearing bent cap comprises a beam body and a wing body, wherein the beam body is of a long strip structure, the wing body is provided with two channels, the wing body is respectively and fixedly arranged at two sides of the beam body, and the beam body and the wing body are fixedly integrated into a whole, namely the beam body and the wing body are integrally poured, concrete is generally adopted for pouring, the top of the wing body protrudes above the upper end faces at two sides of the beam body, so that two sides of the beam body form a blocking structure, the bridge erection is facilitated to be stable, a plurality of cuboid-shaped notches are arranged at the lower side position of the beam body, the transverse length of the notches is greater than the height of the notches, the upper parts of the middle positions of the notches are provided with pouring, the top of the beam body is communicated with the upper end face of the beam body, the pouring hole is used for conveniently pouring concrete into the notch, transverse reinforcing steel bars are arranged in the notch of the beam body, two sides of each transverse reinforcing steel bar penetrate into the beam body fixed on two sides of the notch, so that the transverse reinforcing steel bars penetrate through the whole notch, the middle position of each transverse reinforcing steel bar is located in the notch, the transverse reinforcing steel bars are exposed, the transverse reinforcing steel bars are embedded when the beam body is prefabricated and poured, the transverse reinforcing steel bars are used for reinforcing the binding property of a concrete structure poured in the notch and the prefabricated beam body, and the structure after installation is guaranteed to be firm.

The utility model relates to a bent cap structure body part of a bridge, which belongs to a prefabricated part, the concrete construction process is that a bridge pier template with corresponding height is firstly erected on the ground, the bridge pier generally adopts a cylindrical shape or a square column shape, namely, a corresponding template is erected, then the bent cap of the utility model is hung on the corresponding pier template, and the position of a notch part is just corresponding to the top of the pier template, of course, the template shape at the joint part of the top end of the pier template can be designed according to the needs, meanwhile, reinforcing steel bars inside the pier are erected in the pier template, finally, the pouring hole position is aligned to pour concrete, the pier template can be poured downwards along with gravity, the notch position and the pouring hole position are finally filled, therefore, the pier formed after the concrete is solidified is connected with the structure body at the notch position into a whole, and the transverse reinforcing steel bars at the notch position strengthen the integration, the contact supporting area of the pier and the cover beam is enlarged, and the supporting stability and the supporting strength are improved.

The utility model discloses the advantage that still possesses is, consider the bridge construction of different ground height and topography landform department, because ground height differs to and the difference of topography landform, and the high needs on bridge road surface are unified, therefore the high just can't be accomplished in unison of post mound, need cast-in-place construction, and the structure shape and size of bent cap part is unified basically, and the transverse span of bent cap is great moreover, if adopt cast-in-place, need set up the scaffold frame of large tracts of land, drag construction speed slowly, and increase construction cost, so the utility model discloses well bent cap adopts prefabricated component, can accelerate the construction progress, practices thrift construction cost.

As an improved embodiment, a bending-resistant steel plate is arranged in the beam body at the position of the pouring hole, the bending-resistant steel plate is arranged in the beam body and close to the upper end face of the beam body, and a hole is formed in the bending-resistant steel plate at the position corresponding to the pouring hole, so that the pouring hole is kept in a through state.

As a further improvement, a plurality of slats are arranged on the lower end face of the bending-resistant steel plate in a arrayed mode, the slats and the bending-resistant steel plate are in a vertical state, the slats are arranged along the longitudinal direction of the bending-resistant steel plate, the bending-resistant capacity of the bending-resistant steel plate is effectively improved, and certainly, the slats need to avoid the position of an opening in the bending-resistant steel plate.

As a further improvement, reinforcing plates are arranged at two ends of the bending-resistant steel plate, the cross section of each reinforcing plate is L-shaped and consists of a vertical plate and a transverse plate, one end of each transverse plate is fixedly arranged at the bottom end of each vertical plate, the top end of each vertical plate is fixedly arranged at two ends of the bending-resistant steel plate, each transverse plate faces outwards, and the improvement is that the combination of two ends of each bending-resistant steel plate and the position, close to the lower part, inside the beam body is improved through the reinforcing plates, and the overall bending-resistant capacity of the beam body at the position is improved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic cross-sectional front view of the position a in the present invention.

Fig. 3 is a perspective view of the single bending-resistant steel plate of the present invention.

Fig. 4 is a schematic cross-sectional view of the bending-resistant steel plate of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

The technical problem to be solved by the present invention is to provide a prefabricated bridge bearing bent cap with a firm structure, as shown in fig. 1, comprising a beam body 1 and a wing body 2, wherein the beam body 1 is a strip structure, the wing body 2 is provided with two channels, the wing body 2 is respectively fixed on two sides of the beam body 1, and the beam body 1 and the wing body 2 are fixed into a whole, i.e. they are cast integrally, and generally made of concrete, the top of the wing body 2 protrudes above the upper end surfaces of two sides of the beam body 1, so that two sides of the beam body 1 form a blocking structure, which is beneficial for the stability of bridge erection, a plurality of rectangular notches 11 are provided at the lower side of the beam body 1, as shown in fig. 2, the transverse length of the notch 11 is greater than the height thereof, an injection hole 12 is provided at the upper part of the middle position of the notch 11 on the beam body 1, the bottom of the injection hole 12 is communicated with the notch 11, the top of the beam body is communicated with the upper end face of the beam body 1, the pouring hole 12 is used for facilitating pouring concrete into the notch 11, the transverse steel bars 3 are arranged in the notch 11 in the beam body 1, two sides of each transverse steel bar 3 penetrate into the beam body 1 fixed on two sides of the notch 11, so that the transverse steel bars 3 penetrate through the whole notch 11, the middle positions of the transverse steel bars 3 are located in the notch 11 and are in an exposed state, the transverse steel bars 3 are embedded when the beam body 1 is prefabricated and poured, the transverse steel bars 3 are used for reinforcing the binding property of a concrete structure poured in the notch 11 and the prefabricated beam body 1, and the structure after installation is guaranteed to be firm.

The utility model relates to a bent cap structure part of bridge, which belongs to a prefabricated part, the concrete construction process is that a bridge pier template with corresponding height is firstly erected on the ground, the bridge pier generally adopts a cylindrical shape or a square column shape, namely, a corresponding template is erected, then the bent cap of the utility model is hung on the corresponding pier template, and the placing position of the notch 11 part is just corresponding to the top of the pier template, of course, the template shape of the joint part at the top end of the pier template can be designed according to the needs, meanwhile, reinforcing steel bars inside the pier are erected in the pier template, finally, concrete is poured in the position of the pouring hole 12, the pier template can be downwards filled with the concrete along with the gravity, finally, the notch 11 position and the pouring hole 12 position are filled, therefore, the pier formed after the concrete is solidified is connected with the structure body at the notch 11 position into a whole, and the transverse reinforcing steel bars 3 at the notch 11 part are integrated, the stability and the support intensity of support are improved.

As an improved embodiment, the beam body 1 is provided with a bending-resistant steel plate 4 at the position of the pouring hole 12, as shown in fig. 2, the bending-resistant steel plate 4 is located inside the beam body 1 and close to the upper end surface thereof, and a hole is arranged on the bending-resistant steel plate 4 at the position corresponding to the pouring hole 12, as shown in fig. 3, so that the pouring hole 12 is kept in a through state, and since the whole gravity of the bridge is required to be transmitted to the position of the column pier and is finally carried by the ground, the position of the connection point of the column pier and the beam body has a large bending moment stress, and the improvement has the advantage that the bending moment resistance of the carrying position of the beam body 1 can be enhanced.

As a further improvement, a plurality of strips 41 are arranged on the lower end surface of the bending-resistant steel plate 4, as shown in fig. 3 and 4, the strips 41 are perpendicular to the bending-resistant steel plate 4, and the strips 41 are arranged along the longitudinal direction of the bending-resistant steel plate 4, so as to effectively increase the bending-resistant capability of the bending-resistant steel plate, and of course, the strips 41 need to avoid the position of the hole on the bending-resistant steel plate 4.

As a further improvement, the two end positions of the bending and bending resistant steel plate 4 are provided with reinforcing plates 42, as shown in fig. 2 and fig. 3, the cross-sectional shape of the reinforcing plates 42 is L shape, and it is composed of a vertical plate 421 and a horizontal plate 422, one end of the horizontal plate 422 is fixedly arranged at the bottom end position of the vertical plate 421, the top end of the vertical plate 421 is fixedly arranged at the two end positions of the bending resistant steel plate 4, and the horizontal plate 422 faces to the outside, and the improvement function is to improve the combination of the two ends of the bending resistant steel plate 4 and the position near the lower part inside the beam body 1 through the reinforcing plates 42, and improve the whole bending resistance of the beam body 1 at the position.

The above description of the embodiments is only intended to help understand the core ideas of the present invention; it should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides a firm precast bridge bears bent cap of structure which characterized in that: comprises a beam body (1) and a wing body (2), wherein the beam body (1) is of a long strip structure, the wing bodies (2) are arranged twice, the wing bodies (2) are respectively fixedly arranged at the two sides of the beam body (1), the beam body (1) and the wing body (2) are fixed into a whole, the top of the wing body (2) protrudes above the upper end surfaces of the two sides of the beam body (1), a plurality of cuboid-shaped notches (11) are arranged at the lower side of the beam body (1), the transverse length of the notch (11) is larger than the height of the notch, an injection hole (12) is arranged on the beam body (1) at the upper part of the middle position of the notch (11), the bottom of the injection hole (12) is communicated with the notch (11), the top of the beam body is communicated with the upper end surface of the beam body (1), a transverse reinforcing steel bar (3) is arranged in the notch (11) of the beam body (1), and two sides of the transverse steel bar (3) penetrate into the beam body (1) fixed on two sides of the notch (11).

2. The structurally sound precast bridge deck cap of claim 1, wherein: the beam body (1) is provided with a bending-resistant steel plate (4) at the position of the pouring hole (12), the bending-resistant steel plate (4) is positioned in the beam body (1) and close to the upper end face of the beam body, and a hole is formed in the bending-resistant steel plate (4) at the position corresponding to the pouring hole (12), so that the pouring hole (12) is kept in a through state.

3. The structurally sound precast bridge deck cap of claim 2, wherein: the lower terminal surface of bending-resistant steel sheet (4) is arranged and is provided with multichannel slat (41), slat (41) and bending-resistant steel sheet (4) are in the vertical state, and slat (41) set up along the length direction of bending-resistant steel sheet (4).

4. The precast bridge bearing capping beam with the firm structure according to claim 3 is characterized in that reinforcing plates (42) are arranged at two end positions of the bending-resistant steel plate (4), the cross section of each reinforcing plate (42) is L-shaped and consists of a vertical plate (421) and a transverse plate (422), one end of each transverse plate (422) is fixedly arranged at the bottom end position of the corresponding vertical plate (421), the top end of each vertical plate (421) is fixedly arranged at two end positions of the corresponding bending-resistant steel plate (4), and the transverse plates (422) face outwards.