CN205874944U - Double T type wave form steel web profiled steel sheet combination beam - Google Patents

Abstract

The embodiment of the utility model discloses a double T-shaped corrugated steel web-profiled steel plate composite beam to solve the problem that the existing corrugated steel web concrete composite beam is difficult to construct and the upper flange concrete slab is under the action of positive bending moment prone to cracking problems. The composite beam includes: a first corrugated steel web and a second corrugated steel web; a transverse connecting beam is fixedly connected between the first corrugated steel web and the second corrugated steel web; A profiled steel plate is fixedly connected between the first upper flange of the steel web and the second upper flange of the second corrugated steel web; steel bars or first steel mesh sheets are laid on the profiled steel plate; The first concrete layer is pre-cast on the profiled steel plate with the steel bar or the first steel mesh sheet. The utility model is suitable for composite beams of highway bridges and urban viaducts.

Description

A double T-shaped corrugated steel web-profiled steel composite beam

technical field

The utility model relates to the technical field of composite beams applicable to highway bridges and urban viaducts, in particular to a double T-shaped corrugated steel web-profiled steel composite beam.

Background technique

The traditional corrugated steel web concrete composite beam, as shown in Fig. 1a and Fig. 1b, consists of an upper flange concrete slab 1, a lower flange concrete slab 2 and two first corrugated steel webs 3 placed vertically or obliquely and The second corrugated steel web 4 is composed of corrugated steel webs of each limb and the steel plates of the upper and lower flanges, which need to be accurately positioned after being welded in the factory and transported to the construction site, which makes the construction difficult. In addition, when the upper and lower flange concrete slabs are poured, scaffolding and support formwork must be erected on site, and there are problems such as on-site operation and construction difficulty. On the other hand, the upper and lower flange concrete slabs are prone to cracking under the action of positive bending moments, and the cracks will reduce the bearing capacity, stiffness and durability of the structure. These problems have caused certain difficulties to the popularization and application of this kind of structure.

Contents of the invention

In view of this, the embodiment of the utility model provides a double T-shaped corrugated steel web-profiled steel plate composite beam to solve the problem that the existing corrugated steel web concrete composite beam is difficult to construct and the concrete slab on the upper flange is in positive bending. It is easy to crack under the action of torque.

The embodiment of the utility model provides a double T-shaped corrugated steel web-profiled steel composite beam, including:

A first corrugated steel web and a second corrugated steel web; a first upper flange is fixed to the top of the first corrugated steel web, and a second upper flange is fixed to the top of the second corrugated steel web;

The plate surfaces of the first corrugated steel web and the second corrugated steel web face each other and are arranged at intervals; a transverse connecting beam is fixedly connected between the first corrugated steel web and the second corrugated steel web;

A profiled steel plate is fixedly connected between the first upper flange and the second upper flange; a steel bar or a first reinforcement mesh is laid on the profiled steel plate;

A first concrete layer is pre-cast on the profiled steel plate on which the steel bar or the first steel mesh sheet is laid.

Optionally, the transverse connection beam fixedly connected between the first corrugated steel web and the second corrugated steel web is an I-shaped steel beam.

Optionally, pegs are respectively fixed on the first upper flange and the second upper flange;

The profiled steel plate is fixed on the first upper flange and the second upper flange by the pegs.

Optionally, a ∩-shaped steel bar shear key is embedded in the first concrete layer;

The end of the ∩-shaped steel bar shear key exposes the first concrete layer.

Optionally, a first lower flange is fixed to the bottom of the first corrugated steel web, and a second lower flange is fixed to the bottom of the second corrugated steel web;

A first stiffener is fixed between the first upper flange and the first lower flange, and the first stiffener is close to the plate surface of the first corrugated steel web; on the second upper A second stiffener is fixed between the flange and the second lower flange, and the second stiffener is in close contact with the plate surface of the second corrugated steel web;

One end of the transverse connection beam is supported on the first stiffener and fixed on the first corrugated steel web by bolts; the other end of the transverse connection beam is supported on the second stiffener, And be fixed on the second corrugated steel web by bolts.

Optionally, a second reinforcement mesh sheet is laid on the upper surface of the first concrete layer;

A second concrete layer is poured on the upper surface of the first concrete layer on which the second reinforcement mesh sheet is laid.

In the double T-shaped corrugated steel web-profiled steel composite beam provided by the embodiment of the utility model, a horizontal connecting beam is fixedly connected between the first corrugated steel web and the second corrugated steel web. A profiled steel plate is fixedly connected between the flange and the second upper flange, and a steel bar or a first steel mesh sheet is laid on the profiled steel plate. The first concrete layer is pre-cast on the shaped steel plate, so that when the double T-shaped corrugated steel web-profiled steel plate composite beam provided by the embodiment of the utility model is transported from the factory to the construction site, it can be pre-cast in the first concrete layer. Concrete pouring construction is carried out directly on the concrete layer, and there is no need to position the first corrugated steel web and the second corrugated steel web at the construction site, and it is not necessary to set up support formwork at the construction site, which greatly reduces on-site operations and construction costs. difficulty, so as to achieve the purpose of rapid construction of steel structure bridges; and, since the profiled steel plate is fixedly connected between the first upper flange and the second upper flange, the profiled steel plate is laid with steel bars or first Reinforced mesh, which not only increases the bearing capacity of the concrete layer, but also reduces the cracking of the concrete layer under the action of positive bending moment, avoids the exposure of concrete cracks, and significantly improves the durability of the structure.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Figure 1a is a schematic structural diagram of a traditional corrugated steel web concrete composite beam;

Figure 1b is a schematic structural diagram of another traditional corrugated steel web concrete composite beam;

Fig. 2 and Fig. 3 are the local structural schematic diagrams in the embodiment of the double T-shaped corrugated steel web-profiled steel composite beam of the present invention;

Fig. 4 and Fig. 5 are structural schematic diagrams of embodiments of the double T-shaped corrugated steel web-profiled steel composite beam of the present invention.

detailed description

The embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some 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 creative efforts belong to the scope of protection of the present utility model.

Referring to Fig. 2 to Fig. 5, the double T-shaped corrugated steel web-profiled steel composite girder of the embodiment of the present invention may include: a first corrugated steel web 3 and a second corrugated steel web 4; The top of the first corrugated steel web 3 is fixed with the first upper flange 31, and the top of the second corrugated steel web 4 is fixed with the second upper flange 41; the first corrugated steel web 3 and the second The plate surfaces of the corrugated steel webs 4 face each other and are arranged at intervals; a transverse connecting beam 5 is fixedly connected between the first corrugated steel webs 3 and the second corrugated steel webs 4; 31 and the second upper flange 41 are fixedly connected with a profiled steel plate 6; on the profiled steel plate 6, steel bars or the first steel mesh sheet 7 are laid; after the steel bars or the first steel mesh are laid A first concrete layer 8 is pre-cast on the profiled steel plate 6 of the sheet 7 .

The above structure of this embodiment can be prefabricated in a factory.

In this embodiment, the double T-shaped corrugated steel web means that the first and second two corrugated webs are fixedly connected together through a transverse connecting beam to form a double T-shaped beam. The profiled steel plate refers to a thin steel plate formed by cold pressing or cold rolling. The profiled steel plate can be pressed into corrugated, hyperbolic corrugated, ribbed, V-shaped, stiffened and so on. The profiled steel plate in this embodiment is preferably a corrugated profiled steel plate.

The first upper flange 31 and the second upper flange 41 can be respectively fixed on the tops of the first corrugated steel web 3 and the second corrugated steel web 4 by welding.

The first corrugated steel webs 3 and the second corrugated steel webs 4 can be arranged parallel to each other at intervals, or can be placed obliquely at a certain angle with each other.

In the double T-shaped corrugated steel web-profiled steel composite beam provided by the embodiment of the utility model, a horizontal connecting beam is fixedly connected between the first corrugated steel web and the second corrugated steel web. A profiled steel plate is fixedly connected between the flange and the second upper flange, and a steel bar or a first steel mesh sheet is laid on the profiled steel plate. The first concrete layer is pre-cast on the shaped steel plate, so that when the double T-shaped corrugated steel web-profiled steel plate composite beam provided by the embodiment of the utility model is transported from the factory to the construction site, it can be pre-cast in the first concrete layer. Concrete pouring construction is carried out directly on the concrete layer, and there is no need to position the first corrugated steel web and the second corrugated steel web at the construction site, and it is not necessary to set up support formwork at the construction site, which greatly reduces on-site operations and construction costs. difficulty, so as to achieve the purpose of rapid construction of steel structure bridges; and, since the profiled steel plate is fixedly connected between the first upper flange and the second upper flange, the profiled steel plate is laid with steel bars or first Reinforced mesh, which not only increases the bearing capacity of the concrete layer, but also reduces the cracking of the concrete layer under the action of positive bending moment, avoids the exposure of concrete cracks, and significantly improves the durability of the structure. Furthermore, two corrugated webs are connected through a transverse connecting beam, and the positioning, bolt connection and welding fixation can all be completed in the factory, with a high degree of industrialization and easy quality assurance.

In the aforementioned double T-shaped corrugated steel web-profiled steel composite girder embodiment, optionally, the transverse connecting beam 5 fixedly connected between the first corrugated steel web 3 and the second corrugated steel web 4 For I-beams. The transverse connection beam can be fixedly connected between the first corrugated web and the second corrugated web through high-strength bolts 13 .

In the aforementioned double T-shaped corrugated steel web-profiled steel plate composite beam embodiment, in order to enhance the connection strength of the profiled steel plate with the first upper flange 31 and the second upper flange 41, the first upper flange 41 can be The flange 31 and the second upper flange 41 are respectively fixed with studs 9; the profiled steel plate 6 is fixed on the first upper flange 31 and the second upper flange by the studs 9 41 on. The pegs 9 can be fixed on the first upper flange 31 and the second upper flange 41 by welding.

In the aforementioned double T-shaped corrugated steel web-profiled steel composite beam embodiment, on the one hand, in order to provide the interface shear force of the concrete layer, and on the other hand, in order to facilitate hoisting, the first concrete layer 8 can be embedded with ∩-shaped steel bar shear key 10; the end of the ∩-shaped steel bar shear key 10 exposes the first concrete layer 8, and the exposed part can be used as a lifting point for component hoisting.

In the aforementioned double T-shaped corrugated steel web-profiled steel composite girder embodiment, in order to enhance the stability of the overall structure of the double T-shaped corrugated steel web-profiled steel composite beam, the first corrugated steel web 3 The bottom can be fixed with a first lower flange 32, and the bottom of the second corrugated steel web 4 can be fixed with a second lower flange 42; fixed at the first upper flange 31 and the first lower flange 32 There is a first stiffener 33, and the first stiffener 33 is close to the plate surface of the first corrugated steel web 3; the second upper flange 41 and the second lower flange 42 are fixed with the first Two stiffeners 43, and the second stiffener 43 is close to the plate surface of the second corrugated steel web 4; one end of the transverse connection beam 5 is supported on the first stiffener 33, and is connected by a bolt It is fixed on the first corrugated steel web 3; the other end of the transverse connecting beam 5 is supported on the second stiffener 43, and is fixed on the second corrugated steel web 4 by bolts.

In this embodiment, the first corrugated steel web 3 and the first upper flange 31 at the top and the first lower flange 32 at the bottom together constitute the first corrugated web I-beam; the second corrugated steel web 4, the second upper flange 41 at its top and the second lower flange 42 at its bottom together form a second corrugated web I-beam.

In this embodiment, the transverse connecting beam 5, the first corrugated steel web 3, the second corrugated steel web 4, the first lower flange 32, the second lower flange 42, the first stiffener 33, and the second stiffener The position and connection relationship between 43 make the overall structure of the double T-shaped corrugated steel web-profiled steel composite beam have higher stability.

In the aforementioned double T-shaped corrugated steel web-profiled steel composite beam embodiment, after the double T-shaped corrugated steel web-profiled steel composite beam with the first concrete layer pre-cast is hoisted and transported to the construction site The second steel mesh sheet 11 can be directly laid on the upper surface of the first concrete layer 8, and the second concrete layer is formed by pouring on the upper surface of the first concrete layer 8 on which the second steel mesh sheet 11 is laid. 12. There is no need to perform positioning between the first corrugated steel web and the second corrugated steel web at the construction site, and it is not necessary to set up support formwork at the construction site, which greatly reduces the difficulty of site operations and construction.

The embodiment of the utility model can be applied to composite beams of highway bridges and urban viaducts.

Referring to Fig. 2 to Fig. 5, the construction method for making double T-shaped corrugated steel webs-profiled steel plate composite girders of the present invention may include:

In the factory, the construction steps including the following steps 101 to 106 are carried out:

Step 101 , fixing the first upper flange 31 on the top of the first corrugated steel web 3 , and fixing the second upper flange 41 on the top of the second corrugated steel web 4 .

In this embodiment, the double T-shaped corrugated steel web means that the first and second two corrugated webs are fixedly connected together through a transverse connecting beam to form a double T-shaped beam.

The first upper flange 31 and the second upper flange 41 can be respectively fixed on the tops of the first corrugated steel web 3 and the second corrugated steel web 4 by welding.

Step 102 , arranging the surfaces of the first corrugated steel web 3 and the second corrugated steel web 4 to face each other and to be spaced apart from each other.

In this embodiment, the first corrugated steel webs and the second corrugated steel webs may be arranged parallel to each other at intervals, or may be placed obliquely with each other at a certain angle.

Step 103 , fixedly connect the transverse connecting beam 5 between the first corrugated steel web 3 and the second corrugated steel web 4 .

In this embodiment, the transverse connection beam can be fixedly connected between the first corrugated web and the second corrugated web through high-strength bolts.

Step 104 , fixedly connecting the profiled steel plate 6 between the first upper flange 31 and the second upper flange 41 .

In this embodiment, the profiled steel plate 6 refers to a thin steel plate formed by cold pressing or cold rolling. The profiled steel plate can be pressed into corrugated, hyperbolic corrugated, ribbed, V-shaped, stiffened and so on. The profiled steel plate in this embodiment is preferably a corrugated profiled steel plate.

Step 105 , laying steel bars or the first steel mesh 7 on the profiled steel plate 6 .

Step 106 , precasting a first concrete layer 8 on the profiled steel plate 6 on which the steel bar or the first steel mesh sheet 7 is laid.

In the construction method provided by the embodiment of the utility model, the horizontal connection beam is fixedly connected between the first corrugated steel web and the second corrugated steel web, and the pressing is fixedly connected between the first upper flange and the second upper flange. steel plate, on the profiled steel plate laying steel bars or the first reinforcement mesh sheet, on the described profiled steel plate laying the steel bar or the first reinforcement mesh sheet precasting the first concrete layer, like this, when will according to this After the double T-shaped corrugated steel web-profiled steel composite beam manufactured by the construction method provided by the utility model embodiment is transported from the factory to the construction site, the concrete pouring construction can be directly carried out on the pre-cast first concrete layer, without the need for The positioning between the first corrugated steel web and the second corrugated steel web is carried out on the construction site, and there is no need to set up support formwork on the construction site, which greatly reduces the difficulty of on-site operation and construction, so as to achieve the purpose of rapid construction of steel structure bridges and, since the profiled steel plate is fixedly connected between the first upper flange and the second upper flange, the profiled steel plate is laid with steel bars or the first reinforcement mesh sheet, which increases the bearing capacity of the concrete layer It can also reduce the cracking of the concrete layer under the action of positive bending moment, avoid the exposure of concrete cracks, and significantly improve the durability of the structure. Furthermore, two corrugated webs are connected through a transverse connecting beam, and the positioning, bolt connection and welding fixation can all be completed in the factory, with a high degree of industrialization and easy quality assurance.

In the aforementioned construction method, the fixed connection of the transverse connection beam 5 between the first corrugated steel web 3 and the second corrugated steel web 4 includes: The fixed connection between the steel webs connects the I-beams horizontally.

In the aforementioned construction method, the fixedly connecting the profiled steel plate between the first upper flange and the second upper flange may include: connecting the first upper flange 31 with the second upper flange The pegs 9 are respectively fixed on the edge 41; the profiled steel plate 6 is set between the first upper flange 31 and the second upper flange 41, and the profiled steel plate 6 is fixed on the On the first upper flange 31 and on the second upper flange 41 .

In this embodiment, the pegs can be fixed on the first upper flange and the second upper flange by welding. The profiled steel plate is fixed on the first upper flange and the second upper flange by the pegs, which can strengthen the connection of the profiled steel plate with the first upper flange and the second upper flange strength.

In order to provide the interfacial shear force of the concrete layer and facilitate hoisting, in the aforementioned construction method, it may also include: precasting the first concrete layer 8 on the profiled steel plate on which the steel bar or the first steel mesh 7 is laid , the ∩-shaped steel bar shear key 10 is pre-embedded, so that after the first concrete layer is poured, the end of the ∩-shaped steel bar shear key 10 exposes the first concrete layer 8, and the exposed part can be used as a component Lifting point.

In order to enhance the stability of the overall structure of the double T-shaped corrugated steel web-profiled steel plate composite beam, in the aforementioned construction method, the step 101 may further include: fixing the first corrugated steel web 3 at the bottom The lower flange 32, the second lower flange 42 is fixed at the bottom of the second corrugated steel web 4; the first stiffener 33 is fixed between the first upper flange 31 and the first lower flange 32, And the first stiffener 33 is close to the plate surface of the first corrugated steel web 3; the second stiffener 43 is fixed between the second upper flange 41 and the second lower flange 42, and the The second stiffener 43 is in close contact with the surface of the second corrugated steel web 4 .

Wherein, the step 103: fixedly connecting the transverse connecting beam 5 between the first corrugated steel web 3 and the second corrugated steel web 4 includes: supporting one end of the transverse connecting beam 5 on the first stiffening Rib 33, and fixed on the first corrugated steel web 3 by bolts; the other end of the transverse connection beam 5 is supported on the second stiffener 43, and fixed on the second corrugated steel web by bolts On the web 4.

In this embodiment, the positions and The connection relationship makes the overall structure of the double T-shaped corrugated steel web-profiled steel composite beam have higher stability.

In the aforementioned construction method, the construction method further includes: after the first concrete layer 8 reaches a predetermined hardness, hoisting and transporting the components formed according to the steps 101 to 106 to the construction site as a whole, and after positioning, A second steel mesh sheet 11 is laid on the upper surface of the first concrete layer 8; a second concrete layer 12 is poured on the upper surface of the first concrete layer 8 on which the second steel mesh sheet 11 is laid. There is no need to perform positioning between the first corrugated steel web and the second corrugated steel web at the construction site, and it is not necessary to set up support formwork at the construction site, which greatly reduces the difficulty of site operations and construction.

The embodiment of the utility model can be applied to composite beams of highway bridges and urban viaducts.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed by the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (6)

1. double-T shaped Wavelike steel webplate-profiled sheet combination beam, it is characterised in that including:

First waveform steel web and the second Wavelike steel webplate；The top of described first waveform steel web is fixed with the first top flange, The top of described second Wavelike steel webplate is fixed with the second top flange；

The plate face of described first waveform steel web and the second Wavelike steel webplate is in opposite directions and spaced setting；In described first waveform It is fixedly connected with transverse strut between steel web and the second Wavelike steel webplate；

It is fixedly connected with profiled sheet between described first top flange and described second top flange；On described profiled sheet upper berth It is provided with reinforcing bar or the first reinforced mesh；

The described profiled sheet being equipped with described reinforcing bar or the first reinforced mesh has poured the first concrete layer in advance.

Double-T shaped Wavelike steel webplate-profiled sheet combination beam the most according to claim 1, it is characterised in that described first Between Wavelike steel webplate and the second Wavelike steel webplate, the fixing transverse strut connected is steel I-beam.

Double-T shaped Wavelike steel webplate-profiled sheet combination beam the most according to claim 1, it is characterised in that described first On top flange and it is respectively fixed with peg on the second top flange；

Described profiled sheet is fixed on described first top flange by described peg and on described second top flange.

Double-T shaped Wavelike steel webplate-profiled sheet combination beam the most according to claim 1, it is characterised in that described first Concrete layer is embedded with ∩ steel bar shear key；

Described first concrete layer is exposed in the end of described ∩ steel bar shear key.

Double-T shaped Wavelike steel webplate-profiled sheet combination beam the most according to claim 1, it is characterised in that described first wave The bottom of shape steel web is fixed with the first lower flange, and the bottom of described second Wavelike steel webplate is fixed with the second lower flange；

Between described first top flange and the first lower flange, it is fixed with the first ribbed stiffener, and described first ribbed stiffener is close to described The plate face of first waveform steel web；It is fixed with the second ribbed stiffener between described second top flange and the second lower flange, and described Second ribbed stiffener is close to the plate face of described second Wavelike steel webplate；

One end of described transverse strut is supported on described first ribbed stiffener, and is bolted on described first waveform steel On web；The other end of described transverse strut is supported on described second ribbed stiffener, and is bolted on described second On Wavelike steel webplate.

Double-T shaped Wavelike steel webplate-profiled sheet combination beam the most according to claim 1, it is characterised in that described first Concrete layer upper surface is equipped with the second reinforced mesh；

Upper surface at described first concrete layer being equipped with described second reinforced mesh has poured the second concrete layer.