Novel corrugated steel web composite beam

Abstract

The utility model relates to the field of composite beams, and particularly discloses a novel corrugated steel web composite beam which comprises a main beam assembly, the section of the main beam assembly is of a single-box single-chamber structure, the main beam assembly comprises a concrete top plate and a steel main beam, the steel main beam is of a groove type structure, and the steel main beam comprises a steel bottom plate, an upper flange plate and corrugated steel webs. The corrugated steel web is connected between the steel bottom plate and the upper flange plate in an abutting mode, the stiffening ribs are arranged on the side, facing the corrugated steel web, of the steel bottom plate, the overall section of the main beam of the single-box single-chamber structure can provide better integrity and stability for the composite beam, and the composite beam is more uniform and stable when bearing loads; the corrugated steel web not only can provide excellent shear resistance, but also can improve the overall rigidity and anti-seismic property of the structure through the unique corrugated structure, the bearing capacity of the steel bottom plate can be enhanced through the arrangement of the stiffening ribs, the steel bottom plate is prevented from deforming or cracking in the stress process, and the overall performance of the structure is improved.

Description

Technical Field

[0001] The utility model relates to the field of composite beam industry, in particular to a novel composite beam with corrugated steel webs. Background Art

[0002] Steel-concrete composite beam is a new type of structure developed on the basis of steel structure and concrete structure. It mainly resists the lifting and relative sliding of the two at the interface by setting shear connectors (studs, channel steel, bending bars, etc.) between the steel beam and the concrete flange plate, so that they can work together as a whole. Compared with reinforced concrete beams, steel-concrete composite beams can reduce the deadweight of the structure, reduce earthquake effects, reduce cross-sectional dimensions, increase effective use space, save formwork procedures and templates, shorten construction periods, and increase beam ductility. Compared with steel beams, it can reduce the amount of steel used, increase stiffness, increase stability and integrity, and enhance structural fire resistance and durability.

[0003] However, the safety and stability of existing composite beams are not high enough and still need to be improved. Utility Model Content

[0004] The utility model provides a novel corrugated steel web composite beam to solve the technical problem that the safety and stability of the composite beam in the prior art are not high enough.

[0005] In order to solve the above problems, the utility model provides a new type of corrugated steel web composite beam adopts the following technical scheme: it includes a main beam as a whole, the overall cross-section of the main beam is a single-box single-chamber structure, the main beam as a whole includes a concrete top plate and a steel main beam, the steel main beam is arranged as a trough structure, the steel main beam includes a steel bottom plate, an upper flange plate, and a corrugated steel web, the corrugated steel web and the upper flange plate respectively include two groups, the corrugated steel web is connected between the steel bottom plate and the upper flange plate, a stiffening rib is arranged on one side of the steel bottom plate facing the corrugated steel web and between the two groups of the corrugated steel webs, the stiffening rib includes a plurality of stiffening ribs, and the plurality of stiffening ribs are evenly distributed along the surface of the steel bottom plate.

[0006] Furthermore, a shear key is arranged on one side of the upper flange plate away from the corrugated steel web, and the same upper flange plate includes two groups of shear keys, the shear keys are provided with through holes, and through steel bars penetrate through the through holes.

[0007] Furthermore, the ratio of the concrete top plate width to the overall box bottom width of the main beam is 1:(0.4-0.6), the overall box bottom width of the main beam is equal to the top width of the steel main beam, the top width of the steel main beam is larger than the bottom width of the steel main beam, and the ratio of the top width of the steel main beam to the standard segment length of the steel main beam is 1:(0.4-0.6).

[0008] Furthermore, the ratio of the width of the concrete top plate to the overall box bottom width of the main beam is 1:0.54, and the ratio of the top width of the steel main beam to the standard segment length of the steel main beam is 1:0.53.

[0009] Furthermore, the ratio among the minimum thickness of the concrete top plate, the thickness of the concrete top plate at the pier top, and the thickness of the concrete top plate at the solid-web cross diaphragm is 1:(1.4-1.6):(2.4-2.6).

[0010] Furthermore, the ratio among the minimum thickness of the concrete top plate, the thickness of the concrete top plate at the pier top, and the thickness of the concrete top plate at the solid-web diaphragm is 1:1.56:2.5.

[0011] Furthermore, the concrete top slab is provided with a transverse slope of (1.5-3)%.

[0012] Furthermore, the cross slope is 2%.

[0013] The beneficial effects of a novel composite beam with corrugated steel web provided by the utility model are as follows: the overall cross-section of the main beam with a single-box single-chamber structure can provide the composite beam with better integrity and stability, and it is more uniform and stable when bearing loads; the corrugated steel web can not only provide excellent shear resistance, but also improve the overall stiffness and seismic resistance of the structure through its unique corrugated structure; the setting of the stiffening ribs can enhance the bearing capacity of the steel bottom plate, prevent it from deformation or cracking during the stress process, improve the overall performance of the structure, and thereby make the composite beam safer and more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0015] Figure 1 This is a structural schematic diagram of a new type of corrugated steel web composite beam of the utility model;

[0016] Figure 2 It is a structural schematic diagram of a steel main beam of a new type of corrugated steel web composite beam of the utility model;

[0017] Figure 3 The utility model is a structural schematic diagram of a shear key of a new type of corrugated steel web composite beam.

[0018] Description of reference numerals:

[0019] 1. Concrete top plate; 2. Steel main beam; 21. Steel bottom plate; 211. Ribs; 22. Upper flange plate; 23. Corrugated steel web; 24. Shear key; 241. Through hole; 242. Through steel bar. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0021] Any number of elements in the drawings is for illustration and not limitation, and any naming is for distinction only and does not have any limiting meaning.

[0022] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0023] The utility model provides a new type of corrugated steel web composite beam, such as Figures 1 to 3 As shown, it includes a main beam as a whole, and the overall cross-section of the main beam is a single-box single-chamber structure. The main beam as a whole includes a concrete top plate 1 and a steel main beam 2. The steel main beam 2 is set as a trough structure. The steel main beam 2 includes a steel bottom plate 21, an upper flange plate 22, and a corrugated steel web 23. The corrugated steel web 23 and the upper flange plate 22 respectively include two groups. The corrugated steel web 23 is connected between the steel bottom plate 21 and the upper flange plate 22. A stiffening rib 211 is arranged on one side of the steel bottom plate 21 facing the corrugated steel web 23 and between the two groups of the corrugated steel webs 23. The stiffening rib 211 includes a plurality of stiffening ribs 211, and the plurality of stiffening ribs 211 are evenly spaced along the surface of the steel bottom plate 21.

[0024] By adopting the above technical scheme, the overall cross-section of the main beam with a single-box single-chamber structure can provide the composite beam with better integrity and stability, and be more uniform and stable when bearing loads. The corrugated steel web 23 can not only provide excellent shear resistance, but also improve the overall stiffness and seismic resistance of the structure through its unique corrugated structure. The setting of the stiffening ribs 211 can enhance the bearing capacity of the steel bottom plate 21, prevent it from deformation or cracking during the stress process, improve the overall performance of the structure, and thus make the composite beam safer and more economical.

[0025] In this embodiment, a shear key 24 is provided on the side of the upper flange plate 22 away from the corrugated steel web 23. The same upper flange plate 22 includes two groups of shear keys 24. The shear key 24 is provided with a through hole 241. A through steel bar 242 runs through the through hole 241. The steel bar runs through the two groups of shear keys 24 on the same upper flange plate, which can ensure that the connection between the upper flange plate 22 and the concrete top plate 1 is more uniform and stable, which helps to reduce stress concentration and improve the integrity and stability of the structure. In this embodiment, the thickness of the upper flange plate 22 is 24 mm and the width is 750 mm.

[0026] In this embodiment, in order to ensure the coordination between the concrete top plate 1 and the box chamber and the balance of the overall structure, the ratio of the width of the concrete top plate 1 to the bottom width of the box chamber of the main beam as a whole is 1: (0.4-0.6), the bottom width of the box chamber of the main beam as a whole is equal to the top width of the steel main beam 2, the top width of the steel main beam 2 is greater than the bottom width of the steel main beam 2, and the ratio of the top width of the steel main beam 2 to the standard segment length of the steel main beam 2 is 1: (0.4-0.6), so that the bottom of the box chamber and the top of the steel main beam 2 can fit closely, thereby improving the integrity and rigidity of the structure. , and can effectively increase the stress performance of the steel main beam 2 at the segment connection and the stability of the overall structure. In this embodiment, the ratio of the width of the concrete top plate 1 to the bottom width of the box chamber of the main beam as a whole is 1:0.54, the ratio of the top width of the steel main beam 2 to the standard segment length of the steel main beam 2 is 1:0.53, the width of the concrete top plate 1 is 16.75m, the bottom width of the box chamber of the main beam as a whole is 9.0m, the top width of the steel main beam 2 is 9.0m, the bottom width of the steel main beam 2 is 8.65m, and the standard segment length of the steel main beam 2 is 4.8m.

[0027] In this embodiment, the ratio of the minimum thickness of the concrete top plate 1, the thickness of the concrete top plate 1 at the pier top, and the thickness of the concrete top plate 1 at the solid-web cross diaphragm is 1:(1.4-1.6):(2.4-2.6). The minimum thickness of the concrete top plate 1 ensures that the top plate has sufficient strength on the entire beam body to withstand the expected load. The pier top is the area where the stress of the beam body is relatively concentrated. Therefore, increasing the thickness of the concrete top plate 1 here can improve the local stiffness and bearing capacity of the structure and prevent damage caused by stress concentration. The solid-web cross diaphragm The diaphragm is an important component in the beam body, which is used to increase the lateral stiffness and stability of the beam body. Increasing the thickness of the concrete top slab 1 here can further improve the overall performance of the structure. In this embodiment, the ratio among the minimum thickness of the concrete top slab 1, the thickness of the concrete top slab 1 at the pier top, and the thickness of the concrete top slab 1 at the solid-web type diaphragm is 1:1.56:2.5. The minimum thickness of the concrete top slab 1 is 32 cm, the thickness of the concrete top slab 1 at the pier top is 50 cm, and the thickness of the concrete top slab 1 at the solid-web type diaphragm is 80 cm.

[0028] In this embodiment, the concrete top plate 1 is provided with a transverse slope of (1.5-3)%, which can better drain water and prevent water accumulation in the concrete top plate 1 from damaging the structure. Considering the drainage efficiency and the convenience of construction, in this embodiment, the transverse slope is 2%. It should be noted that the specific value of the transverse slope should be determined comprehensively based on factors such as the climatic conditions, rainfall, top plate materials and structural forms of the project site. In order to ensure smooth drainage, reasonable drainage facilities such as drainage ditches and drainage pipes can also be set on the concrete top plate 1.

[0029] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and other terms indicating orientation or position relationship are based on the orientation or position relationship shown in the drawings of this specification, which are only for the purpose of facilitating the explanation of the scheme of the utility model and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the utility model.

[0030] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A new type of corrugated steel web composite beam, characterized in that: It includes a main beam as a whole. The overall cross-section of the main beam is a single-box single-chamber structure. The main beam as a whole includes a concrete top plate and a steel main beam. The steel main beam is arranged as a trough structure. The steel main beam includes a steel bottom plate, an upper flange plate, and a corrugated steel web. The corrugated steel web and the upper flange plate each include two groups. The corrugated steel web is connected between the steel bottom plate and the upper flange plate. A stiffening rib is arranged on one side of the steel bottom plate facing the corrugated steel web and between the two groups of the corrugated steel webs. The stiffening rib includes a plurality of stiffening ribs, and the plurality of stiffening ribs are evenly spaced along the surface of the steel bottom plate.

2. The novel corrugated steel web composite beam according to claim 1 is characterized in that: A shear key is arranged on one side of the upper flange plate away from the corrugated steel web plate. The same upper flange plate includes two groups of shear keys. The shear keys are provided with through holes, and through steel bars are passed through the through holes.

3. The novel corrugated steel web composite beam according to claim 2 is characterized in that: The ratio of the width of the concrete top plate to the bottom width of the main beam box is 1:(0.4-0.6), the bottom width of the main beam box is equal to the top width of the steel main beam, the top width of the steel main beam is larger than the bottom width of the steel main beam, and the ratio of the top width of the steel main beam to the standard segment length of the steel main beam is 1:(0.4-0.6).

4. The novel corrugated steel web composite beam according to claim 3 is characterized in that: The ratio of the width of the concrete top plate to the overall box bottom width of the main beam is 1:0.54, and the ratio of the top width of the steel main beam to the standard segment length of the steel main beam is 1:0.

53.

5. The novel corrugated steel web composite beam according to claim 1, characterized in that: The ratio among the minimum thickness of the concrete top plate, the thickness of the concrete top plate at the pier top, and the thickness of the concrete top plate at the solid-web cross diaphragm is 1:(1.4-1.6):(2.4-2.6).

6. The novel corrugated steel web composite beam according to claim 5, characterized in that: The ratio among the minimum thickness of the concrete top plate, the thickness of the concrete top plate at the pier top, and the thickness of the concrete top plate at the solid-web diaphragm is 1:1.56:2.

5.

7. The novel corrugated steel web composite beam according to claim 1, characterized in that: The concrete top slab has a horizontal slope of (1.5-3)%.

8. The novel corrugated steel web composite beam according to claim 7, characterized in that: The cross slope is 2%.

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