CN218540365U

CN218540365U - Steel-concrete structure bent cap, bridge supporting structure with same and bridge structure

Info

Publication number: CN218540365U
Application number: CN202223105354.1U
Authority: CN
Inventors: 宋松科; 熊伦; 邵林; 彭友松; 刘伟; 石恒俊; 王成波
Original assignee: Sichuan Communication Surveying and Design Institute Co Ltd
Current assignee: Sichuan Communication Surveying and Design Institute Co Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-02-28
Anticipated expiration: 2032-11-22

Abstract

The embodiment of the application discloses a steel-concrete structure capping beam, a bridge supporting structure with the capping beam and a bridge structure, and relates to the technical field of road and bridge engineering, the steel-concrete structure capping beam comprises a first capping beam and a second capping beam, wherein the first capping beam is made of concrete, the second capping beam is made of steel, and the mutually-close beam surfaces of the first capping beam and the second capping beam are connected to form a capping beam body; set up first cooperation portion on keeping away from the roof beam face of first bent cap of second bent cap, first cooperation portion be used for with the cooperation of the second cooperation portion on the pier stud, the shape of second cooperation portion matches with the shape of first cooperation portion. This application forms the bent cap body with the combination of the first bent cap that is connected and second bent cap, and the second bent cap can be prefabricated in advance to ensure the manufacturing quality, and be convenient for hoist and mount and transport, install the back at the second bent cap, the part of first bent cap just can use the second bent cap to pour as the die block, and the degree of difficulty of pouring reduces and has simplified the construction flow, and the construction degree of difficulty of bent cap thereupon also reduces.

Description

Steel-concrete structure bent cap, bridge supporting structure with same and bridge structure

Technical Field

The application relates to the technical field of road and bridge engineering, in particular to a steel-concrete structure bent cap, a bridge supporting structure with the bent cap and a bridge structure.

Background

The capping beam is a cross beam, also called a cap beam, arranged at the top of the framed bent pier for supporting, distributing and transferring the load of the upper structure. The cross beams made of reinforced concrete or less concrete are arranged on the piers (platforms) or the piles. The main function is to support the upper structure of the bridge and transmit all the load to the lower structure, and the bridge piles are directly connected with the capping beam and are connected with the capping beam after being connected with the upright posts.

The existing bridge pier capping beam construction mode can be divided into two categories of prefabrication and cast-in-place, the cast-in-place concrete capping beam construction mode is adopted, the field workload is very large, a template needs to be built, reinforcing steel bars need to be bound, the high-altitude operation time is long, the safety risk is large, and the capping beam construction quality is uneven; the prefabricated capping beam is adopted, and the prefabricated capping beam is manufactured in an industrialized mode and installed on site, so that the quality level can be ensured to be relatively consistent, but the structure is heavy, large-scale hoisting equipment is needed, and for some mountainous bridges, the large-scale equipment cannot reach, so that the applicability of the prefabricated capping beam is poor; therefore, the construction difficulty of the conventional bent cap is high.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides a steel-concrete structure bent cap, has bridge bearing structure and bridge structures of this bent cap, aims at solving the great problem of the pier bent cap construction degree of difficulty among the prior art.

The technical scheme adopted by the application is as follows:

in a first aspect, an embodiment of the present application provides a steel-concrete structure bent cap, including:

the bent cap comprises a bent cap body, wherein the bent cap body comprises a first bent cap and a second bent cap, the first bent cap is made of concrete, the second bent cap is made of steel, and the first bent cap and the second bent cap are connected through beam faces close to each other to form a bent cap body;

set up first cooperation portion on keeping away from the beam surface of first bent cap of second bent cap, first cooperation portion be used for with the cooperation of the second cooperation portion on the pier stud, the shape of second cooperation portion matches with the shape of first cooperation portion.

Optionally, a plurality of shear connectors are arranged on the beam surface, close to the first capping beam, of the second capping beam, and one ends, far away from the second capping beam, of the shear connectors are embedded into the first capping beam.

Optionally, the plurality of shear connectors are uniformly distributed on the beam surface of the second capping beam close to the first capping beam.

Optionally, the shear connector is a shear key.

Optionally, the first matching portion is a connecting column, a reserved notch is formed in the pier column to form a second matching portion, and the connecting column is matched with the reserved notch.

Optionally, a plurality of supports are arranged on the beam surface of the first cover beam far away from the second cover beam.

Optionally, the first capping beam is far away from the second capping beam on the beam surface, and the two sides perpendicular to the extending direction of the bridge deck are both provided with the stop blocks.

In a second aspect, an embodiment of the present application provides a bridge support structure, including a pier stud, a pile foundation, and a steel-concrete structure capping beam as provided in any one of the first aspects of the embodiments of the present application, wherein:

the number of the pier columns is the same as that of the pile foundations, and one pier column is coaxially connected with one pile foundation;

set up second cooperation portion on the first face of pier stud, the steel-concrete structure bent cap cooperates with the second cooperation portion of pier stud through its first cooperation portion.

Optionally, the bridge support structure further includes tie beams, the pile foundations are multiple, and adjacent pile foundations are connected through one tie beam.

In a third aspect, an embodiment of the present application provides a bridge structure, which includes precast beam slabs and a plurality of bridge support structures provided as in any one of the second aspect of the embodiments of the present application, where the precast beam slabs are erected between adjacent bridge support structures.

Compared with the prior art, the beneficial effect of this application is:

the embodiment of the application provides a steel-concrete structure bent cap, a bridge supporting structure and a bridge structure with the bent cap, the bent cap body is composed of a first bent cap and a second bent cap, the second bent cap is made of steel and can be obtained in a prefabrication mode, the quality can be guaranteed to be relatively consistent during batch manufacturing, the size of the second bent cap is smaller than that of the bent cap body, hoisting and transferring can be facilitated, a first matching portion is arranged on the second bent cap, a second matching portion matched with the first matching portion is arranged on a pier column, positioning and installation of the bent cap and the pier column can be facilitated, steel bars do not need to be bundled, after the second bent cap is installed, concrete can be poured on the second bent cap, the first bent cap made of concrete is obtained, the first bent cap is only a part of the bent cap body, the size is smaller, the prefabricated second bent cap can serve as a bottom die foundation for pouring of the first bent cap, the difficulty of pouring the first bent cap is reduced, and after the first bent cap and the second bent cap are well poured, namely, the bent cap and the bridge pier body is formed by combining the first bent cap and the bent cap, and the difficulty of construction is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a steel-concrete structure capping beam provided in an embodiment of the present application;

FIG. 2 is a schematic view of a part A of the enlarged structure of FIG. 1;

FIG. 3 is a schematic side view of a steel-concrete cap beam provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a bridge support structure according to an embodiment of the present disclosure;

FIG. 5 is a schematic side view of a bridge support structure according to an embodiment of the present disclosure;

fig. 6 is a schematic construction flow diagram of a bridge supporting structure provided in the embodiment of the present application;

reference numerals: 1-capping beam body, 11-first capping beam, 12-second capping beam, 13-shearing resistant connector, 2-support, 3-stop block, 4-pier stud, 5-tie beam and 6-pile foundation.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is 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" or "second" may explicitly or implicitly include at least one of the feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B", including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

Referring to fig. 1 to 3, an embodiment of the present application provides a capping beam of a steel-concrete structure, including a first capping beam 11 and a second capping beam 12, where the first capping beam 11 is made of concrete, the second capping beam 12 is made of steel, and beam surfaces of the first capping beam 11 and the second capping beam 12, which are close to each other, are connected to form a capping beam body 1; set up first cooperation portion on the roof beam face of keeping away from first bent cap 11 of second bent cap 12, first cooperation portion be used for with pier stud 4 on the cooperation of second cooperation portion, the shape of second cooperation portion matches with the shape of first cooperation portion.

In this embodiment, form bent cap body 1 with the combination of first bent cap 11 and the second bent cap 12 that are connected, second bent cap 12 can be prefabricated in advance, reduce the cycle of construction and ensured manufacturing quality, and the volume is less for bent cap body 1, the hoist and mount of being convenient for are transported, can adapt to most operational environment, first cooperation portion makes second bent cap 12 and pier stud 4 of bridge can fix a position fast under mutually supporting with second cooperation portion, and need not the reinforcing bar and tie up, the construction process has been simplified, after second bent cap 12 hoists and installs, the part of first bent cap 11 just can pour with second bent cap 12 as the die block, it reduces to pour required mould quantity, the degree of difficulty that first bent cap 11 pour thereupon reduces, can reduce the construction degree of difficulty of bent cap.

In one embodiment, as shown in fig. 1 and 2, a plurality of shear connectors 13 are arranged on the beam surface of the second capping beam 12 close to the first capping beam 11, and one end of each shear connector 13 far away from the second capping beam 12 is embedded in the first capping beam 11. The shear connector 13 is used for resisting the longitudinal shear force on the superposed surface of the concrete slab and the steel beam, so that the concrete slab and the steel beam are connected more firmly and cannot slide freely, and the lifting force which enables the connecting component to have the separation tendency is resisted. Further, in order to make the structure stable and the stress uniform, a plurality of shear connectors 13 are arranged to be uniformly distributed on the beam surface of the second capping beam 12 close to the first capping beam 11.

Shear connector 13 form is more, can divide into rigid connection spare and flexible connection spare two types according to deformability, and flexible connection spare rigidity is little, and the shear force that is used in first bent cap 11 and second bent cap 12 and is connected the face can make its deformation, and the bearing capacity can not reduce when taking place relative slip, common like toggle, curved muscle, channel-section steel etc. and square steel, U-shaped steel then belong to rigid connection spare. In the shear connector 13 adopted in the embodiment of the present application, such as a shear pin or a shear key, one end of the shear connector 13 is connected to the second steel cap beam 12 by welding or penetration welding, and then the head of the shear pin is embedded into the first cap beam 11 after the first cap beam 11 is formed by casting to complete the connection. The shear key can be a PBL shear key, and has high ultimate bearing capacity, good ductility and better fatigue resistance than that of a stud and the like.

In an embodiment, as shown in figure 1, a cooperation connected mode of bent cap body 1 and pier stud 4 is provided, it is the spliced pole to set up first cooperation portion, set up on the pier stud 4 and reserve the notch in order to form second cooperation portion, spliced pole and reservation notch cooperation, adopt the cooperation connected mode of reserving the notch, can also reduce the construction degree of difficulty on the basis that can realize quick location, simplify the construction flow, insert the cooperation mode of reserving the notch with the spliced pole under, to pier stud 4 construction deviation tolerance grow, it is quick simple and convenient to connect the position processing, only need directly pour a small amount of concrete after the bent cap stable installation and fill between the space of spliced pole and reservation notch and can accomplish firm the connection. Of course, in other embodiments, other matching manners may be adopted, for example, other forms of mutually matched projections and grooves are adopted, and a plugging or clamping groove manner is adopted, so that the fixing and installation can be performed quickly, and the fixing means after the installation can also be directly cast or cast by a steel sleeve.

In one embodiment, as shown in fig. 1 and 2, in order to facilitate the installation of precast beam panels when erecting a bridge and ensure the stability of the structure, a plurality of supporting blocks 2 are provided on the beam surface of the first capping beam 11 away from the second capping beam 12, so that the load and deformation borne by the upper structure of the bridge can be reliably transmitted to the supporting structure of the lower part of the bridge.

In one embodiment, as shown in fig. 1, in order to prevent the erected precast beam slab from falling to the two sides of the bridge deck, the stoppers 3 are arranged on the beam surface of the first capping beam 11 away from the second capping beam 12 and on the two sides perpendicular to the extension direction of the bridge deck, and the stoppers 3 can be arranged between the side-by-side precast beam slabs in some places with frequent earthquake to reduce the risk.

Referring to fig. 4 and 5, based on the same inventive concept as the previous embodiment, the embodiment of the present application further provides a bridge supporting structure, which includes pier studs 4, pile foundations 6, and a steel-concrete structure capping beam as provided in the embodiment of the present application, the number of pier studs 4 is the same as that of pile foundations 6, and one pier stud 4 is coaxially connected to one pile foundation 6; set up second cooperation portion on the first face of pier stud 4, the cooperation of the second cooperation portion of steel-concrete structure bent cap through its first cooperation portion and pier stud 4.

Based on the same inventive concept as the previous embodiment, the embodiment of the present application further provides a bridge structure, which includes precast beam slabs and a plurality of bridge support structures provided in the embodiment of the present application, and the precast beam slabs are erected between adjacent bridge support structures.

The principle and the beneficial effects of the embodiment can be referred to the steel-concrete structure capping beam in the embodiment, after the pile foundation 6 and the pier stud 4 are added, a group of bridge supporting structures are formed, and then precast beam plates are erected among the multiple groups of bridge supporting structures, so that a bridge structure can be formed; under the condition of many pile foundations 6, in order to promote the stability of structure, set up a tie beam 5 between adjacent pile foundations 6 and connect firmly, many pile foundations 6 can be side by side pile foundations 6 also can be polygonal distribution like the triangular pile.

Referring to fig. 6, a construction process of a bridge supporting structure provided in an embodiment of the present application may be described as follows:

the first step is as follows: constructing the pile foundation 6 and the pier stud 4, and continuously extending to form the pier stud 4 on the basis of the pile foundation 6, namely the pile extension under the normal condition;

the second step is that: erecting a steel cover beam, and installing the prefabricated steel cover beam on the basis of the pier stud 4 in a hoisting mode;

the third step: and pouring the concrete cover beam, closing the mould and pouring on the basis of the steel cover beam to form a first cover beam 11, and forming the cover beam with a combined structure with the steel cover beam after the first cover beam 11 is formed.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steel-concrete structure bent cap, characterized by, includes:

the bent cap comprises a bent cap body, wherein the bent cap body comprises a first bent cap and a second bent cap, the first bent cap is made of concrete, the second bent cap is made of steel, and the first bent cap and the beam surface, close to each other, of the second bent cap are connected to form the bent cap body;

keep away from of second bent cap set up first cooperation portion on the roof beam face of first bent cap, first cooperation portion be used for with the cooperation of the second cooperation portion on the pier stud, the shape of second cooperation portion with the shape matching of first cooperation portion.

2. The capping beam with a steel-concrete structure according to claim 1, wherein a plurality of shear connectors are arranged on the beam surface of the second capping beam close to the first capping beam, and one end of each shear connector far away from the second capping beam is embedded into the first capping beam.

3. The steel-concrete structural capping beam according to claim 2, wherein a plurality of the shear connectors are uniformly distributed on a beam surface of the second capping beam adjacent to the first capping beam.

4. The steel-concrete structural cap beam according to claim 2, wherein the shear connector is a shear key.

5. The capping beam with a reinforced concrete structure according to claim 1, wherein the first fitting part is a connection column, a reserved notch is provided on the pier column to form the second fitting part, and the connection column is fitted with the reserved notch.

6. The steel-concrete structural capping beam according to claim 1, wherein a plurality of supports are provided on a beam surface of the first capping beam remote from the second capping beam.

7. The capping beam with the steel-concrete structure according to claim 1, wherein the first capping beam is provided with a stop block on the beam surface far away from the second capping beam and on both sides perpendicular to the extension direction of the bridge deck.

8. A bridge support structure comprising pier studs, pile foundations, and a steel-concrete structural cap beam as claimed in any one of claims 1 to 7, wherein:

set up second cooperation portion on the first face of pier stud, the steel-concrete structure bent cap through its first cooperation portion with the pier stud the cooperation of second cooperation portion.

9. The bridge support structure of claim 8, further comprising a plurality of tie beams, wherein adjacent pile foundations are connected by one of the tie beams.

10. A bridge construction comprising precast beam panels and a plurality of bridge support structures according to claim 8 or 9, the precast beam panels being erected between adjacent bridge support structures.