CN111778842B - A connection structure of steel plate beams - Google Patents

Abstract

The present invention discloses a connection structure of a steel plate beam, comprising two mutually matching connection parts, the two connection parts are located on two different steel plate beams, the connection parts comprise a step arranged at the end of the steel plate beam and a connection plate fixedly arranged on both sides of the step, the connection plates in the two connection parts correspond to each other, and the corresponding two connection plates are fixedly connected by bolts. The connection structure of the steel plate beam of the present invention has a simple structure and is convenient to connect, which can greatly simplify the construction process of the steel plate beam and reduce the construction cost.

Description

A connection structure of steel plate beams

Technical Field

The invention relates to the technical field of bridges, and in particular to a connection structure of steel plate beams.

Background Art

The steel plate beam in the steel plate composite bridge is a steel structural member welded by the upper flange steel plate, the steel web and the lower flange steel plate. For multi-span continuous steel plate composite beam bridges, the construction method is generally to erect the steel beam first, and then construct the concrete bridge deck. There are many methods for the construction of steel beams, such as support construction, top-pushing construction, etc. The support method is the most common construction method. The specific construction method is: the steel plate beam is usually processed into multiple segments in the factory, transported to the construction site for splicing to form a large segment beam body, and then the large segment beam body is hoisted to the bridge pier by a car crane. Finally, the segments are connected at the bridge position to form a continuous steel plate beam.

There are two traditional methods for steel plate beam construction. One is to set up temporary piers: take a 4-span continuous beam as an example, first hoist the beam body segment of the first span, supported on piers 1, 2, and the temporary piers of the second span; then hoist the beam body segment of the second span, supported on the temporary piers of the second span and pier 3, and splice the first span beam segment and the second span beam segment on the temporary pier of the second span; then hoist the beam body segment of the third span, supported on the temporary piers of the third span and pier 4, and splice the second span beam segment and the third span beam segment on the temporary pier of the third span; finally hoist the beam body segment of the fourth span, supported on the temporary piers of the fourth span and pier 4, and splice the third span beam segment and the fourth span beam segment on the temporary pier of the fourth span. This construction method requires the installation of temporary piers at the ends of each beam segment, and the temporary piers are removed after the steel beam is formed as a whole. The installation and removal of temporary piers require a certain amount of material and labor costs.

The other method is to set up double supports in the middle pier: Taking a two-span continuous beam as an example, first, two large segment steel beams are manufactured at the bridge location, and the length of the beam segment of each span is equal to the span of the bridge. During construction, each beam segment is hoisted and placed on two adjacent piers, and then the adjacent beams are connected to form a continuous structure. This construction method requires two rows of supports to be set up in the longitudinal direction of the upper part of the middle pier. In order to place the two rows of supports in the longitudinal direction, the top of the middle pier needs to be larger in the longitudinal direction than the size of only one row of supports, and the detailed structure is complicated. This construction method requires more supports and pier materials than other methods, and the cost is high.

Summary of the invention

The object of the present invention is to provide a connection structure of steel plate beams to solve the problems existing in the above-mentioned prior art, simplify the construction process of steel plate beams, and reduce construction costs.

To achieve the above object, the present invention provides the following solutions:

The present invention provides a connection structure of a steel plate beam, comprising two mutually matching connection parts, the two connection parts are located on two different steel plate beams, the connection parts include a step arranged at the end of the steel plate beam and a connection plate fixed on both sides of the step, the connection plates in the two connection parts correspond to each other one by one, and the corresponding two connection plates are fixedly connected by bolts.

Preferably, the connecting plate comprises an upper vertical plate, a horizontal plate and a lower vertical plate which are connected in sequence.

Preferably, arc transition plates are respectively arranged between the upper vertical plate and the horizontal plate, and between the horizontal plate and the lower vertical plate.

Preferably, the upper vertical plate, the horizontal plate, the lower vertical plate and the arc transition plate are all edge-wrapped steel plates.

Preferably, the upper vertical plate, the horizontal plate and the lower vertical plate are respectively welded to the steel plate beam.

Preferably, bolt holes are respectively provided on the upper vertical plate, the horizontal plate and the lower vertical plate.

Preferably, vertical stiffening plates and longitudinal stiffening plates respectively connected to the connecting plates are provided on the web of the steel plate beam.

Preferably, the connecting plate is flush with the surface of the step.

Compared with the prior art, the present invention has achieved the following technical effects:

The connection structure of the steel plate beam of the present invention has a simple structure and is convenient to connect, which can greatly simplify the construction process of the steel plate beam and reduce the construction cost.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of a two-span continuous beam using a connection structure of a steel plate beam according to the present invention;

FIG2 is a structural schematic diagram 1 of the connection structure of the steel plate beam of the present invention;

FIG3 is a second structural schematic diagram of the connection structure of the steel plate beam of the present invention;

FIG4 is a schematic structural diagram of a solution of a four-span continuous beam using the connection structure of the steel plate beam of the present invention;

FIG5 is a schematic structural diagram of another solution of a four-span continuous beam using the connection structure of the steel plate beam of the present invention;

Among them: 1. Pier No. 1; 2. Pier No. 2; 3. Pier No. 3; 4. First steel plate beam; 5. Second steel plate beam; 6. Third steel plate beam; 7. Pier No. 4; 8. Pier No. 5; 9. Fourth steel plate beam; 10. Vertical stiffening plate; 11. Longitudinal stiffening plate; 12. Arc transition plate; 13. Bolt hole; 14. Upper vertical plate; 15. Horizontal plate; 16. Lower vertical plate; 17. Bolts.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The object of the present invention is to provide a connection structure of steel plate beams to solve the problems existing in the above-mentioned prior art, simplify the construction process of steel plate beams, and reduce construction costs.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 to 5: This embodiment provides a connection structure of steel plate beams, including two mutually matching connection parts, one connection part is located at the end of the first steel plate beam 4, and the other connection part is located at the end of the second steel plate beam 5.

Taking the connection part on the first steel plate beam 4 as an example, the connection part includes a step arranged at the end of the first steel plate beam 4 and connecting plates fixed on both sides of the step. The connecting plates in the two connection parts correspond one to one, and the corresponding two connecting plates are fixedly connected by bolts 17.

Specifically, the connecting plate includes an upper vertical plate 14, an arc transition plate 12, a horizontal plate 15, an arc transition plate 12 and a lower vertical plate 16 connected in sequence. The provision of the arc transition plate 12 can avoid a sudden change in the cross section at the intersection of the upper vertical plate 14, the lower vertical plate 16 and the horizontal plate 15, which may cause excessive stress in this part. In this embodiment, the upper vertical plate 14, the horizontal plate 15, the lower vertical plate 16 and the arc transition plate 12 are all made of hemmed steel plates. The upper vertical plate 14, the horizontal plate 15 and the lower vertical plate 16 are welded to the steel plate beams respectively, and the upper vertical plate 14, the horizontal plate 15 and the lower vertical plate 16 are respectively provided with bolt holes 13.

In this embodiment, the connection part at the end of the first steel plate beam 4 plays a supporting role, while the connection part at the end of the second steel plate beam 5 plays a overlapping role. In order to facilitate the installation of the bolts 17 and the rapid splicing on site, the diameter of the bolt 17 hole 13 on the connecting plate at the end of the first steel plate beam 4 can be set to be 2mm larger than the diameter of the bolt 17 hole 13 on the connecting plate at the end of the second steel plate beam 5.

Vertical stiffening plates 10 and longitudinal stiffening plates 11 connected to the connection plates are arranged on the web of the steel plate beam. The arrangement of the vertical stiffening plates 10 and longitudinal stiffening plates 11 can prevent the web near the connection from being overstressed and causing local instability. The vertical stiffening plates 10 and longitudinal stiffening plates 11 are welded together at the intersection.

Figure 1 is a schematic diagram of the structure of a two-span continuous beam using the connection structure of the steel plate beams in this embodiment, including Pier No. 1 1, Pier No. 2 2, Pier No. 3 3, a first steel plate beam 4 and a second steel plate beam 5. The first steel plate beam 4 is mounted on Pier No. 1 and Pier No. 2 2, and the right end of the first steel plate beam 4 and the left end of the second steel plate beam 5 are respectively provided with connecting parts, that is, the right end of the first steel plate beam 4 and the left end of the second steel plate beam 5 are connected together by the connection structure of the steel plate beams in this embodiment, and the right end of the second steel plate beam 5 is mounted on Pier No. 3 3.

4 is a schematic structural diagram of a scheme of a four-span continuous beam adopting the connection structure of the steel plate beams of the present embodiment, comprising pier No. 1 1, pier No. 2 2, pier No. 3 3, pier No. 4 7, pier No. 5 8, a first steel plate beam 4, a second steel plate beam 5 and a third steel plate beam 6, wherein the first steel plate beam 4 is erected on pier No. 1 and pier No. 2 2, and the right end of the first steel plate beam 4, the left end of the second steel plate beam 5, the right end of the second steel plate beam 5 and the left end of the third steel plate beam 6 are respectively provided with connecting portions, that is, the right end of the first steel plate beam 4 and the left end of the second steel plate beam 5, the right end of the second steel plate beam 5 and the left end of the third steel plate beam 6 are respectively connected together by the connection structure of the steel plate beams in the present embodiment, the right end of the second steel plate beam 5 is erected on pier No. 3 3, and the third steel plate beam 6 is erected on pier No. 4 7 and pier No. 5 8.

5 is a schematic structural diagram of another scheme of a four-span continuous beam using the connection structure of the steel plate beam of this embodiment, including pier No. 1 1, pier No. 2 2, pier No. 3 3, pier No. 4 7, pier No. 5 8, a first steel plate beam 4, a second steel plate beam 5, a third steel plate beam 6 and a fourth steel plate beam 9. The first steel plate beam 4 is erected on pier No. 1 and pier No. 2 2, and the right end of the first steel plate beam 4, the left end of the second steel plate beam 5, the right end of the second steel plate beam 5, the left end of the third steel plate beam 6, and the fourth steel plate beam 9 are connected to the pier No. 1 1 and the pier No. 2 2. The right end of the plate beam 6 and the left end of the fourth steel plate beam 9 are respectively provided with connecting parts, that is, the right end of the first steel plate beam 4 and the left end of the second steel plate beam 5, the right end of the second steel plate beam 5 and the left end of the third steel plate beam 6, and the right end of the third steel plate beam 6 and the left end of the third steel plate beam 6 are respectively connected together by the connecting structure of the steel plate beams in this embodiment, the right end of the second steel plate beam 5 is mounted on the No. 3 pier 3, the third steel plate beam 6 is mounted on the No. 4 pier 7, and the fourth steel plate beam 9 is mounted on the No. 5 pier 8.

It should be noted that in this embodiment, the surface of the connecting plate is flush with the surface of the step at the end of the steel plate beam, but in actual application, in order to take into account the lateral limit connection of the two connected steel plate beams, it is also feasible to set the connecting plate to protrude or recessed on the surface of the step while ensuring that the two connecting parts can match.

In the description of the present invention, it should be noted that the terms "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims (4)

1. A connection structure of a steel plate beam, characterized in that: it comprises two mutually matching connection parts, the two connection parts are located on two different steel plate beams, the connection part comprises a step arranged at the end of the steel plate beam and a connection plate fixedly arranged on both sides of the step, the connection plates in the two connection parts correspond to each other, and the corresponding two connection plates are fixedly connected by bolts; The connecting plate comprises an upper vertical plate, a horizontal plate and a lower vertical plate which are connected in sequence; arc transition plates are respectively arranged between the upper vertical plate and the horizontal plate, and between the horizontal plate and the lower vertical plate; bolt holes are respectively arranged on the upper vertical plate, the horizontal plate and the lower vertical plate; A vertical stiffening plate and a longitudinal stiffening plate respectively connected to the connecting plate are arranged on the web of the steel plate beam, and the vertical stiffening plate and the longitudinal stiffening plate are welded together at the intersection. 2. The connection structure of the steel plate beam according to claim 1 is characterized in that the upper vertical plate, the horizontal plate, the lower vertical plate and the arc transition plate are all edge-wrapped steel plates. 3. The connection structure of the steel plate beam according to claim 1 is characterized in that the upper vertical plate, the horizontal plate and the lower vertical plate are respectively welded to the steel plate beam. 4. The connection structure of the steel plate beam according to claim 1 is characterized in that the connection plate is flush with the surface of the step.