CN111778842A - A connection structure of steel plate beams - Google Patents

Abstract

The invention discloses a connecting structure of steel plate beams, which comprises two mutually inosculated connecting parts, wherein the two connecting parts are positioned on two different steel plate beams, each connecting part comprises a step arranged at the end part of each steel plate beam and connecting plates fixedly arranged at two sides of the step, the connecting plates in the two connecting parts are in one-to-one correspondence, and the two corresponding connecting plates are fixedly connected through bolts. The connecting structure of the steel plate beam has the advantages of simple structure and convenient connection, can greatly simplify the construction process of the steel plate beam, and reduces the construction cost.

Description

A connection structure of steel plate beams

technical field

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

Background technique

Steel plate beams in steel plate composite bridges are steel structural members welded by upper flange steel plates, steel webs and lower flange steel plates. For multi-span continuous steel plate composite girder bridges, the construction method is generally to erect steel beams first, and then construct concrete bridge decks. Among them, there are many construction methods for steel beams, such as support method construction, jacking method construction and so on. Using the bracket method to construct the steel plate beam is the most common construction method. The specific construction method is as follows: the steel plate beam is usually processed into multiple sections in the factory, transported to the construction site for splicing to form a large-section beam body, and then a car hanging handle is used. The large segment beam is hoisted to the bridge pier, and finally the segments are connected at the bridge position to form a continuous steel plate beam.

There are two traditional steel plate beam construction methods. One is the method of erecting temporary piers: take a 4-span continuous beam as an example to illustrate, first hoist the beam segment of the first span, and support it on the No. 1 pier, No. 2 pier and the temporary pier of the second span; then hoist the second span The beam body segment of the second span is supported on the temporary pier and No. 3 pier of the second span, and the first span beam segment and the second span beam segment are spliced on the temporary pier of the second span; then the beam body segment of the third span is hoisted and supported on the third span On the three-span temporary pier and No. 4 pier, splicing the second-span beam segment and the third-span beam segment on the third-span temporary pier; finally hoist the fourth-span beam segment, which is supported on the fourth-span temporary pier and the 4th-span beam segment. On the No. pier, splicing the third-span beam section and the fourth-span beam section on the fourth-span temporary pier. This construction method requires temporary piers to be installed at the ends of each beam section, and the temporary piers are removed after the steel beams are formed as a whole. The installation and removal of temporary piers require a certain amount of material and labor costs.

The other is to set double supports in the middle pier: take the two-span continuous beam as an example to illustrate, first, two large-segment steel beams are fabricated at the bridge position, and the length of the beam body segment of each span is equal to the span of the bridge. During construction, each beam body segment is hoisted and placed on two adjacent piers, and then the adjacent beam bodies are connected to form a continuous connection structure. This construction method requires two rows of supports to be arranged on the upper part of the middle pier in the longitudinal bridge direction. In order to place the two rows of supports in the longitudinal bridge direction, the size of the top of the middle pier along the longitudinal bridge direction is required to be larger than that of only one row of supports. , the details are complex. This construction method requires more bearing and pier material than other methods, and the cost is high.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a connection structure of a steel plate beam, so as to solve the above problems existing in the prior art, simplify the construction process of the steel plate beam, and reduce the construction cost.

For achieving the above object, the present invention provides the following scheme:

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

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

Preferably, arc transition plates are respectively provided 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 edging steel plates.

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

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

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

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

The present invention has achieved the following technical effects with respect to the prior art:

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

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the structural representation of the two-span continuous beam adopting the connection structure of the steel plate beam of the present invention;

Fig. 2 is the structural representation one of the connection structure of the steel plate beam of the present invention;

Fig. 3 is the structural schematic diagram two of the connection structure of the steel plate beam of the present invention;

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

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 the present invention;

Among them: 1, No. 1 pier; 2, No. 2 pier; 3, No. 3 pier; 4, No. 1 steel plate beam; 5, No. 2 steel plate beam; 6, No. 3 steel plate beam; No. pier; 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 plate; 17. Bolts.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a connection structure of a steel plate beam, so as to solve the above problems existing in the prior art, simplify the construction process of the steel plate beam, and reduce the construction cost.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIGS. 1 to 5 : this embodiment provides a connection structure of a steel plate beam, including two connecting parts that match each other, one connecting part is located at the end of the first steel plate beam 4 , and the other connecting part is located at the first steel plate beam 4 . The ends of two steel plate beams 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 a connection plate fixed on both sides of the step, and the connection plates in the two connection parts correspond one-to-one. , 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 cross-section change at the intersection of the vertical plate 16 and the horizontal plate 15 is relatively sudden, which leads to excessive stress at this position. 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 edge-wrapped steel plates. The upper vertical plate 14 , the horizontal plate 15 and the lower vertical plate 16 are respectively welded with the steel plate beam, and the upper vertical plate 14 , the horizontal plate 15 and the lower vertical plate 16 are respectively provided with bolts 17 holes 13 .

In this embodiment, the connecting part of the end of the first steel plate beam 4 plays a supporting role, and the connecting part of the end of the second steel plate beam 5 plays a lap joint function. In order to facilitate the installation of the bolts 17 and the quick 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 2 mm 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 are arranged on the webs of the steel plate beams, which are respectively connected with the connecting plates. The arrangement of the vertical stiffening plate 10 and the longitudinal stiffening plate 11 can prevent the web near the connection portion from being overstressed and localized instability occurs. The vertical stiffening plate 10 and the longitudinal stiffening plate 11 are welded together at the intersection.

1 is a schematic structural diagram of a two-span continuous beam using the connection structure of steel plate beams in this embodiment, including No. 1 pier 1, No. 2 pier 2, No. 3 pier 3, a first steel plate beam 4 and a second steel plate beam 5 , the first steel plate beam 4 is erected on the first pier 1 and the second pier 2, 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 The left ends of the two steel plate beams 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 supported on the third pier 3 .

4 is a schematic structural diagram of a scheme of a four-span continuous beam using the connection structure of the steel plate beam of the present embodiment, including the first pier 1, the second pier 2, the third pier 3, the fourth pier 7, and the fifth pier 8 , the first steel plate beam 4, the second steel plate beam 5 and the third steel plate beam 6, the first steel plate beam 4 is erected on the first pier 1 and the second pier 2, the right end of the first steel plate beam 4, the second steel plate beam 5 The left end of the second steel plate beam 5 and the left end of the third steel plate beam 6 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 third steel plate beam 5. The left ends of the three steel plate beams 6 are respectively connected together by the connection structure of the steel plate beams in this embodiment, the right end of the second steel plate beam 5 is supported on the third pier 3, and the third steel plate beam 6 is erected on the fourth pier 7 and the fifth Trick 8 on.

FIG. 5 is a schematic structural diagram of another scheme of the four-span continuous beam using the connection structure of the steel plate beam of the present embodiment, including the first pier 1, the second pier 2, the third pier 3, the fourth pier 7, and the fifth pier 8. The first steel plate beam 4, the second steel plate beam 5, the third steel plate beam 6 and the fourth steel plate beam 9, the first steel plate beam 4 is erected on the first pier 1 and the second pier 2, the first steel plate beam 4 The right end, 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, the right end of the third steel plate beam 6 and the left end of the fourth steel plate beam 9 are respectively provided with connecting parts, that is, the first The right end of the 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, the right end of the third steel plate beam 6 and the left end of the third steel plate beam 6 pass through this embodiment respectively. The connection structure of the middle steel plate beams is connected together, the right end of the second steel plate beam 5 is erected on the third pier 3, the third steel plate beam 6 is erected on the fourth pier 7, and the fourth steel plate beam 9 is erected on the fifth pier 8 .

It should be noted that in this embodiment, the surfaces of the connecting plate and the step at the end of the steel plate beam are flush, but in practical application, in order to take into account the lateral limit connection of the two connected steel plate beams, it is necessary to ensure that the two connecting parts are On the basis of being able to fit, it is also feasible to set the connecting plate protruding or concave on the surface of the step.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on those shown in the accompanying drawings The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention . Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In this specification, specific examples are used to illustrate the principles and implementations of the present invention, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; The idea of the invention will have changes in the specific implementation manner and application range. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (8)

1. The utility model provides a connection structure of steel sheet roof beam which characterized in that: the connecting plate comprises two mutually matched connecting parts, wherein the two connecting parts are positioned on two different steel plate beams, the connecting parts comprise steps arranged at the end parts of the steel plate beams and connecting plates fixedly arranged on two sides of the steps, the two connecting plates in the connecting parts correspond to one another one by one, and the two corresponding connecting plates are fixedly connected through bolts.

2. The connecting structure of steel plate girders according to claim 1, characterized in that: the connecting plate comprises an upper vertical plate, a horizontal plate and a lower vertical plate which are connected in sequence.

3. The connecting structure of steel plate girders according to claim 2, characterized in that: 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.

4. The connecting structure of steel plate girders according to claim 3, 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.

5. The connecting structure of steel plate girders according to claim 2, characterized in that: the upper vertical plate, the horizontal plate and the lower vertical plate are respectively welded with the steel plate girder.

6. The connecting structure of steel plate girders according to claim 2, characterized in that: the upper vertical plate, the horizontal plate and the lower vertical plate are respectively provided with bolt holes.

7. The connecting structure of steel plate girders according to claim 1, characterized in that: and a web plate of the steel plate beam is provided with a vertical stiffening plate and a longitudinal stiffening plate which are respectively connected with the connecting plate.

8. The connecting structure of steel plate girders according to claim 1, characterized in that: the connecting plate is flush with the surface of the step.

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