CN208235303U - A kind of precast prestressed modularization viaduct - Google Patents

Abstract

The utility model discloses a prefabricated prestressed modular overpass, which comprises: arc-shaped prefabricated beams and connectors, the arc-shaped prefabricated beams are arranged at intervals in sequence to form an arc-shaped bridge structure, and the connectors are respectively arranged on adjacent Between two arc-shaped prefabricated beams, the connector is an arc-shaped curved I-beam, and the two sides of the arc-shaped prefabricated beam are respectively provided with convex edges corresponding to the grooves on both sides of the connector, and the arc-shaped prefabricated The bottom of the beam is provided with convex ribs to form a T-shaped cross-sectional structure, and several steel beams are arranged between two adjacent ribs for connection. Through the above method, the prefabricated prestressed modular overpass described in the utility model, the curved prefabricated beams and connectors are customized in the factory, and then transported to the site for construction, which greatly shortens the construction period on site, and only takes a few weeks Completed, reducing the impact of construction on traffic.

Description

A prefabricated prestressed modular overpass bridge

technical field

The utility model relates to the technical field of bridges, in particular to a prefabricated prestressed modular overpass.

Background technique

With the development of China's economy and society, the urban population is increasing, the number of motor vehicles is increasing year by year, and urban traffic is becoming more and more congested. Every city is trying to solve the problem of urban road congestion, especially at intersections.

Overpass bridges can alleviate the traffic congestion at intersections very well, but the construction period of overpass bridges is long, which usually takes several months to several years. During the construction period, the congestion problem at intersections is aggravated. Therefore, the longer the construction time, the greater the impact on the city. The greater the impact of traffic, the greater the need for improvement.

Utility model content

The technical problem mainly solved by the utility model is to provide a prefabricated prestressed modular overpass bridge, which is assembled by using prefabricated parts, so as to reduce the construction period and the impact on traffic.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a prefabricated prestressed modular overpass bridge, including: arc-shaped prefabricated beams and connectors, and the arc-shaped prefabricated beams are arranged at intervals to form an arc-shaped bridge frame, the connectors are respectively arranged between two adjacent arc-shaped prefabricated beams, the connectors are arc-shaped curved I-beams, and the two sides of the arc-shaped prefabricated beams are respectively provided with the two sides of the connectors. The convex edge corresponding to the groove, the bottom of the curved prefabricated beam is provided with convex ribs to form a T-shaped cross-sectional structure, and several steel beams are arranged between adjacent two convex ribs for connection, and the two ends of the steel beam are respectively transversely The ribs run through and the ends are provided with nuts for limiting.

In a preferred embodiment of the present invention, the arc-shaped prefabricated beams and ribs are a conjoined concrete structure, and steel mesh is pre-embedded in the arc-shaped prefabricated beams and ribs.

In a preferred embodiment of the present invention, steel plates are respectively arranged on the outer sides of the convex edges, and the steel plates are welded and fixed to the steel mesh.

In a preferred embodiment of the utility model, the arc-shaped prefabricated beam is an integral structure or a segmented structure.

In a preferred embodiment of the present invention, when the arc-shaped prefabricated beam is a segmented structure, several positioning holes are respectively arranged at both ends of each segment of ribs, and the positioning holes between two adjacent segments of ribs are provided with pins. axis for positioning.

In a preferred embodiment of the utility model, when the arc-shaped prefabricated beam is an integral structure, lightening holes are provided in the ribs.

In a preferred embodiment of the utility model, the steel beam is a hollow steel pipe, and the two ends of the steel beam are respectively provided with external threads corresponding to the nuts.

In a preferred embodiment of the present invention, it also includes a guardrail, the bottom of the guardrail is provided with a C-shaped steel base, and the C-shaped steel base is set on the outer flange of the edge arc prefabricated beam.

In a preferred embodiment of the present invention, the C-shaped steel base and the steel plate on the corresponding convex edge are fixed by bolts, and the corresponding steel plates are provided with threaded holes corresponding to the bolts.

In a preferred embodiment of the utility model, the top surface of the connecting piece is flush with the top surface of the curved prefabricated beam.

The beneficial effects of the utility model are: a prefabricated prestressed modular overpass pointed out by the utility model, the curved prefabricated beams and connectors are customized in the factory, and then transported to the site for construction, which greatly shortens the construction period on site. It can be completed in a few weeks, reducing the impact of construction on traffic, and the prestressed concrete structure ensures the span of the overpass.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is a structural representation of a preferred embodiment of a prefabricated prestressed modular overpass of the present utility model;

Fig. 2 is a sectional view taken along line A-A of Fig. 1 .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1 ~ Fig. 2, the utility model embodiment comprises:

A prefabricated prestressed modular overpass bridge, comprising: curved prefabricated beams 1 and connectors 2, the curved prefabricated beams 1 are arranged at intervals in turn to form a curved bridge structure, and the connected parts 2 are respectively arranged on two adjacent Between the two arc-shaped prefabricated beams 1, the top surface of the connector 2 is flush with the top surface of the arc-shaped prefabricated beam 1 to ensure the flatness of the surface. If necessary, lay a layer of asphalt road surface to reduce the noise when the vehicle is running .

The connector 2 is an arc-shaped curved I-beam, and the two sides of the arc-shaped prefabricated beam are respectively provided with convex edges 11 corresponding to the grooves on both sides of the connector 2, and the convex edges 11 are embedded in the squares on both sides of the I-beam. In the groove, the stability of the structure is high.

The bottom of the arc-shaped prefabricated beam 1 is provided with ribs 8 to form a T-shaped cross-sectional structure, and the ribs 8 are used to strengthen the strength of the arc-shaped prefabricated beam 1, especially the load capacity. There are several steel beams 9, and the two ends of the steel beams 9 transversely penetrate the convex ribs 8 respectively, and the ends are provided with nuts 7 to limit the position, and perform transverse stretching to limit the position, avoiding the transverse separation between the curved prefabricated beams 1, and lifting The integrity of the structure.

The steel beam 9 is a hollow steel pipe for further weight reduction, and the two ends of the steel beam 9 are respectively provided with external threads corresponding to the nut 7 to facilitate the installation of the nut 7 .

The arc-shaped prefabricated beam 1 and the ribs 8 are a conjoined concrete structure, and the arc-shaped prefabricated beam 1 and the ribs 8 are pre-embedded with a reinforcement mesh 12, which has high structural strength. The width of the curved prefabricated beam 1 is set at 1 meter, which can be adjusted according to actual needs. It is prefabricated in the factory and then transported to the intersection for construction.

Steel plates 3 are arranged on the outer sides of the flanges 11, and the steel plates 3 and the steel mesh 12 are welded and fixed. The steel plates 3 are located in the grooves on both sides of the connector 2, which reduces the working pressure of the flanges 11 and improves the integrity of the structure. and strength.

The curved prefabricated beam 1 can adopt two structures, integral structure and segmented structure:

When the arc-shaped prefabricated beam 1 is a segmented structure, two upper and lower positioning holes 10 are respectively arranged at both ends of each segment of the ribs 8, and the positioning holes 10 between two adjacent segments of the ribs 8 are inserted using a pin Positioning reduces the production and transportation costs of the curved prefabricated beam 1;

When the arc-shaped prefabricated beam 1 is an integral structure, lightening holes are arranged in the ribs 8 to reduce the self-weight.

In order to improve safety, guardrails 4 also need to be installed on both sides of the overpass bridge. The bottom of the guardrail 4 is provided with a C-shaped steel base 6. The guardrail 4 adopts a steel structure, and the C-shaped steel base 6 is fixed by welding or bolts. Convenient, the C-shaped steel base 6 is arranged on the outer flange of the edge arc prefabricated beam, the C-shaped steel base 6 is stuck on the outer flange, and the structure is relatively stable, and the C-shaped steel base 6 is connected to the corresponding flange. The steel plate is fixed by bolt 5, and the structure is firm. The corresponding steel plate is provided with threaded holes corresponding to the bolt 5, which is convenient for installation, disassembly and maintenance.

To sum up, a prefabricated prestressed modular overpass proposed by the utility model especially adopts arc prefabricated beams 1 and connectors 2, without pouring and waiting at the construction site, less affected by bad weather, and short construction period , the impact on urban traffic can be minimized.

The above descriptions are only examples of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the utility model description, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. a kind of precast prestressed modularization viaduct characterized by comprising arc precast beam and connector, the arc Precast beam is sequentially arranged at intervals and forms arc bridge framework, and the connector is separately positioned on two adjacent arc precast beams Between, the connector is the I-steel of arc-shaped bend, and arc precast beam two sides are respectively arranged with recessed with connector two sides The bottom of the corresponding chimb of slot, the arc precast beam is provided with convex ribs and forms T section structure, between adjacent two convex ribs It is provided with several girder steels to be attached, the girder steel both ends extend transversely through convex ribs respectively and end is provided with nut and is limited.

2. precast prestressed modularization viaduct according to claim 1, which is characterized in that the arc precast beam and convex Muscle is the concrete structure of disjunctor, is embedded with steel mesh in the arc precast beam and convex ribs.

3. precast prestressed modularization viaduct according to claim 2, which is characterized in that set respectively on the outside of the chimb It is equipped with steel plate, the steel plate is welded and fixed with steel mesh.

4. precast prestressed modularization viaduct according to claim 1, which is characterized in that the arc precast beam is whole Body formula structure or segmentation structure.

5. precast prestressed modularization viaduct according to claim 1, which is characterized in that the arc precast beam is point When segmentation structure, every section of convex ribs both ends are respectively arranged with several location holes, and the location hole between adjacent two sections of convex ribs utilizes pin shaft It is positioned.

6. precast prestressed modularization viaduct according to claim 1, which is characterized in that the arc precast beam is whole When body formula structure, lightening hole is provided in convex ribs.

7. precast prestressed modularization viaduct according to claim 1, which is characterized in that the girder steel is hollow steel Pipe, the girder steel both ends are respectively arranged with external screw thread corresponding with nut.

8. precast prestressed modularization viaduct according to claim 3, which is characterized in that it further include guardrail, the shield The bottom on column is provided with C-shaped steel base, and the C-shaped steel base is arranged on the outside chimb of edge arc precast beam.

9. precast prestressed modularization viaduct according to claim 8, which is characterized in that the C-shaped steel base with it is right It answers the steel plate on chimb to be fixed by bolts, is provided with threaded hole corresponding with bolt on corresponding steel plate.

10. precast prestressed modularization viaduct according to claim 1, which is characterized in that the top surface of the connector It is flushed with the top surface of arc precast beam.