AU2021410522A1

AU2021410522A1 - Steel beam for steel concrete synthetic beam and deck beam integrated prefabricated module

Info

Publication number: AU2021410522A1
Application number: AU2021410522A
Authority: AU
Inventors: Joo Ho JIN; Dong Joon Kim; Seong Jin Kim; Tae Jeung Kim; Koo Yun Park; Hee Sun SEO
Original assignee: Gaurian Corp; Kolon E&c Inc
Current assignee: Gaurian Corp; Kolon E&c Inc
Priority date: 2020-12-23
Filing date: 2021-12-21
Publication date: 2023-07-13
Also published as: WO2022139426A1

Abstract

The present invention relates to a steel beam for a steel concrete synthetic beam, the steel beam forming opposite side surfaces of a steel beam and including a first and a second beam module made of ready-made channel members and a lower plate connecting lower flanges of the first and the second beam module, whereby supply of materials is easy, a separate processing and molding can be minimized, a welding process can be omitted, and thus manufacturability and economy are excellent and structural performance is also excellent.

Description

Description Title of the Invention: STEEL BEAM FOR STEEL CONCRETE SYNTHETIC BEAM AND DECK BEAM INTEGRATED PREFABRICATED MODULE

Technical Field

[1] The present invention relates to a steel beam for a steel concrete composite beam, which includes: first and second beam modules composed of the channel members to form both sides of a steel beam; and a lower plate connecting lower flanges of the first and second beam modules, and which can facilitate material supply and demand, minimize additional processing and molding processes, and eliminate a welding process, thereby providing high manufacturability and cost-effectiveness and excellent structural performance. Background Art

[2] Tn a steel concrete construction site, a mold is installed according to the shape of a member, reinforced bars are placed, and concrete is poured into the mold to construct structural members. However, such a traditional steel concrete construction method is labor-intensive, difficult to ensure quality, and causes a delay of a construction period due to the installation and removal of temporarily construction materials. Additionally, a plurality of supporting bars are required for supporting the mold, and it is difficult for workers to move around.

[3] Tn order to overcome these issues, the application of a precast concrete construction method (PC method) is increasing as an alternative to traditional steel concrete construction.

[4] However, the PC method requires detailed planning to ensure that the weight of the materials does not exceed the maximum capacity of the lifting equipment, and significant crane setup

I time is required during the installation of major components.

Moreover, the production time for components is long, which can

hinder smooth supply.

[51 Therefore, recently, there has been a growing trend of

using a steel concrete composite structure that steel materials

instead of the temporary mold are used as a permanent mold.

[61 In particular, as a beam member, a steel concrete composite

beam in which a U-shaped steel beam with an open upper portion is

installed and the inside of the steel beam is filled with

concrete has been widely used. The steel beam serves as a

permanent mold and also functions as a main root and a strut of

the beam, thereby considerably reducing or eliminating internal

reinforcement placement.

[71 Such a steel concrete composite structure can reduce the

load on the lifting equipment by reducing the weight of the

components, decrease the crane setup time during the installation

of major components, and minimize the risk of joint cracks or

component damage since the joints are cast as a whole.

Additionally, the steel concrete composite structure allows

smooth material supply since the production time for the

components is not long, and facilitates changes in size and shape

of the components.

[81 Steel beams for steel concrete composite beams are mainly

manufactured by bending and welding steel plates (Korean Patent

Nos. 10-1458508 and 10-1456366, etc.).

[91 In a case in which steel plates are bent to manufacture

steel beams, thin steel plates are mainly bent by cold rolling.

This method allows for the production of components with desired

dimensions, but has a limitation in thickness of bendable plates.

In other words, if the steel plate is too thick, the material and processing costs increase significantly, leading to reduced cost effectiveness.

[10] On the other hand, if the steel plate is formed thin,

additional temporary materials is required to support the

concrete lateral pressure. Moreover, due to insufficient flexural

capacity, internal reinforcement placing amount must be increased

or additional steel beams must be placed, resulting in decreased

constructability.

[11] Furthermore, built-up beams manufactured by welding require

expensive automatic welding equipment, and there is a risk of

plastic deformation of steel materials during welding, and it is

difficult to manage welding quality.

[12] For slabs, the use of deck plates, which are permanent

molds, instead of the temporary mold is common. In particular, a

truss deck having a truss girder on the upper side of the deck

plate can be installed without the need for additional temporary

bars, thereby minimizing temporary construction work and

facilitating worker movement.

[13] Meanwhile, in a conventional steel concrete slab-beam

structure using steel concrete composite beams and deck plates,

steel beams are installed between columns or between girders

installed between columns. Then, deck plates are installed

between neighboring steel beams, and concrete is poured inside

the steel beams and on top of the deck plates for construction.

[14] In this case, the plurality of deck plates which are

stacked are placed on the upper portion of the steel beams, and

each deck plate is individually positioned and fixed to the steel

beams using welding or other methods.

[15] However, in this case, the steel beams and deck plates are

installed separately, and each individual deck plate needs to be positioned and fixed, and it takes a lot of construction time.

Additionally, the construction work of deck plates is performed

as high place work on the upper side of the steel beams, but it

may cause an accident such as worker falling, and the like.

Disclosure Technical Problem

[16] Accordingly, the present invention has been made in view of

the above-mentioned problems occurring in the related art, and it

is an object of the present invention to provide a steel beam for

a steel concrete composite beam capable of facilitating material

supply and demand, minimizing additional processing and molding

processes, and eliminating a welding process, thereby providing

high manufacturability and cost-effectiveness.

[17] It is another object of the present invention to provide a

steel beam for a steel concrete composite beam with excellent

structural performance.

[18] It is a further object of the present invention to provide

a steel beam for a steel concrete composite beam capable of

remarkably reducing construction time and secure worker safety

during steel composite concrete slab-beam construction.

Technical Solution

[19] To accomplish the above-mentioned objects, according to the

present invention, there is provided a steel beam for a steel

concrete composite beam including: a first beam module which

includes a channel member consisting of an upper flange, a lower

flange, and a web connecting the ends of the upper and lower

flanges; a second beam module which includes a channel member

consisting of an upper flange, a lower flange, and a web

connecting the ends of the upper and lower flanges, and is

provided to be spaced apart from the first beam module; and a lower plate which connects the lower flanges of the channel member of the first beam module and the channel member of the second beam module with each other.

[20] According to a preferred embodiment of the present

invention, the first beam module and the second beam module are

respectively composed of at least two layers of channel members

vertically connected to each other.

[21] According to a preferred embodiment of the present

invention, the lower plate is fixed to the lower surfaces of the

first beam module and the second beam module, and the lower plate

is secured to the lower flange of the channel member of the

second beam module by coupling bolts.

[22] According to a preferred embodiment of the present

invention, the upper and lower channel members of the first beam

module and the second beam module are coupled to each other by

coupling bolts, and the upper channel member of the first beam

module and the upper channel member of the second beam module can

be mutually connected through a tie plate of which both ends are

coupled to coupling bolts connected to the corresponding lower

flanges.

[23] According to a preferred embodiment of the present

invention, the tie plate includes a first bolt coupling hole and

a second bolt coupling hole, which are respectively formed on

both sides of the tie plate and to which the coupling bolts are

respectively fastened, the first bolt coupling hole is rotatably

coupled to the coupling bolt on the side of the first beam module,

and the second bolt coupling hole is opened at one side so as to

be joined to the coupling bolt of the second beam module by

rotation of the tie plate.

[24] According to a preferred embodiment of the present

invention, the channel members are formed to have inwardly

sloping inner surfaces such that the thickness decreases toward

the flange edges, and a washer member which is coupled to the

coupling bolts and installed on the inner surface of the flange

may be designed as a tapered washer with increasing thickness

towards the flange edge.

[25] In another aspect of the present invention, there is

provided a deck-beam integrated prefabricated module, which is to

construct a steel composite concrete slab-beam structure in which

deck plates are placed on the upper portions of a plurality of

steel beams arranged to be spaced apart from each other and

concrete is poured into the steel beams and on the upper side of

the deck plate, including: a deck plate; a first beam module,

which is fixed and coupled to a lower portion of one end portion

of the deck plate and corresponds to one side of the steel beam

divided into right and left sides; and a second beam module,

which is fixed and coupled to a lower portion of the other end

portion of the deck plate and corresponds to the other side of

the steel beam divided into right and left sides.

[26] According to a preferred embodiment of the present

invention, the first beam module and the second beam module

respectively include channel members, which include upper flanges

on which a deck plate is fixed, webs bent downwardly and

vertically from one end of each of the upper flanges, and lower

flanges bent horizontally from the lower ends of the webs, and

the first beam module is connected to the second beam module of

the adjacent prefabricated module by coupling the lower flanges,

thereby forming the steel beam.

[27] According to a preferred embodiment of the present

invention, a lower plate is coupled to the lower flange of either

the first beam module or the second beam module to interface with

the lower flange of the other beam module.

[28] In another aspect of the present invention, there is

provided a steel composite concrete slab-beam structure

construction method using the deck-beam integrated prefabricated

module, including the steps of: (a) preparing the deck-beam

integrated prefabricated module; (b) sequentially installing the

plurality of prefabricated modules in the transverse direction on

one side of pre-installed columns or girders installed between

the columns, and coupling a first beam module and a second beam

module of the neighboring prefabricated module with each other;

and (c) pouring concrete into the steel beam formed by the

neighboring first and second beam module and on the upper side of

the deck plate.

Advantageous Effects

[29] According to the present invention, the following effects

can be achieved.

[30] First, the present invention can provide a steel beam for a

steel concrete composite beam, which includes: the first and

second beam forming both sides of a steel beam, and the lower

plate connecting lower flanges of the first and second beam

modules. Especially the channel members are used to the first and

second beam modules as they are, so as to facilitate material

supply and demand, minimize additional processing and molding

processes, and eliminate a welding process, thereby providing

high manufacturability and cost-effectiveness.

[31] Second, in addition to using the channel members with

superior cross-sectional performance, the thickness of the lower plates can be freely selected according to the bending stress on the steel beams. Therefore, the present invention enables excellent structural performance and economical cross-section formation.

[32] Third, in a case in which beam modules are constructed by

connecting two or more channel members vertically, the beam

modules can be applied even to steel beams with large depth.

[33] Fourth, in a case in which a prefabricated module is formed

by integrally forming the first and second beam modules, which

are divided into right and left parts, the present invention can

greatly reduce a construction period of time since the first and

second beam modules which form the plurality of deck plates and

steel beams can be constructed collectively. In addition, since

the deck plate installation work can be performed in a factory or

on an on-site workshop in advance, ensuring excellent worker

safety. Additionally, Since the deck plates are installed

together with the steel beams by equipment at the construction

site, there is no limitation in size of the deck plates and it is

easy to apply them to long-span slabs.

Description of Drawings

[34] FIG. 1 is a perspective view illustrating a steel beam for

a steel concrete composite beam according to a first embodiment

of the present invention.

[35] FIG. 2 is a perspective view illustrating a steel beam with

concrete poured inside.

[36] FIG. 3 is a perspective view illustrating a steel beam for

a steel concrete composite beam according to a second embodiment

of the present invention.

[37] FIG. 4 is a perspective view illustrating a prefabricated

module with which a separable steel beam and a deck plate are integrated.

[38] FIG. 5 is a perspective view illustrating a connection

relationship of neighboring prefabricated modules.

[39] FIG. 6 is a perspective view illustrating a connection

state of neighboring prefabricated modules.

[40] FIGS. 7 and 8 are sectional views illustrating states

before and after the connection of the separable steel beams.

[41] FIG. 9 is a perspective view illustrating an example of tie

plates connected.

[42] FIG. 10 is a perspective view illustrating the tie plates.

[43] FIGS. 11 to 13 are views illustrating a connection process

of the tie plates.

[44] FIG. 14 is a sectional view illustrating a connection

relationship of beam modules according to an embodiment of the

present invention.

[45] FIG. 15 is a sectional view illustrating the connection

state of the beam modules illustrated in Figure 14.

[46] FIG. 16 is a sectional view illustrating a connection

relationship of beam modules according to another embodiment of

the present invention.

[47] FIG. 17 is a sectional view illustrating the connection

state of the beam modules illustrated in Figure 16.

[48] FIG. 18 is a perspective view illustrating an installation

process of neighboring prefabricated modules.

Best Mode

[49] In order to achieve the above objects of the present

invention, the steel beam for a steel concrete composite beam

according to the present invention includes: a first beam module

which includes a channel member consisting of an upper flange, a

lower flange, and a web connecting the ends of the upper and lower flanges; a second beam module which includes a channel member consisting of an upper flange, a lower flange, and a web connecting the ends of the upper and lower flanges, and is provided to be spaced apart from the first beam module; and a lower plate which connects the lower flanges of the channel member of the first beam module and the channel member of the second beam module with each other.

Mode for Invention

[50] FIG. 1 is a perspective view illustrating a steel beam for

a steel concrete composite beam according to a first embodiment

of the present invention, and FIG. 2 is a perspective view

illustrating a steel beam with concrete poured inside.

[51] As illustrated in FIGS. 1 and 2, the steel beam for a steel

concrete composite beam according to the present invention

includes: a first beam module 5 which includes a channel member

consisting of an upper flange 51, a lower flange 52, and a web

53 connecting the ends of the upper and lower flanges 51 and 52;

a second beam module 6 which includes a channel member 60

consisting of an upper flange 61, a lower flange 62, and a web 63

connecting the ends of the upper and lower flanges 61 and 62, and

is provided to be spaced apart from the first beam module 5; and

a lower plate 7 which connects the lower flanges 52 and 62 of the

channel member 50 of the first beam module 5 and the channel

member 60 of the second beam module 6 with each other.

[52] The present invention is to provide a steel beam for a

steel concrete composite beam capable of facilitating material

supply and demand, minimizing additional processing and molding

processes, and eliminating a welding process, thereby providing

high manufacturability and cost-effectiveness and excellent

structural performance.

[531 The present invention consists of the first beam module 5

and the second beam module 6, which are configured as a pair, and

the lower plate 7 connecting the lower portions of the first beam

module 5 and the second beam module 6.

[54] The first beam module 5 and the second beam module 6 form

both sides of a steel beam 4, and respectively include channel

members 50 and 60.

[55] The channel member 50 which forms the first beam module 5

is composed of an upper flange 51, a lower flange 52, and a web

53 connecting the ends of the upper and lower flanges 51 and 52,

so as to be formed in a 'C'-shaped cross section.

[56] Similarly, the channel member 60 which forms the second

beam module 6 is composed of an upper flange 61, a lower flange

62, and a web 63 connecting the ends of the upper and lower

flanges 61 and 62, so as to be formed in a 'C'-shaped cross

section.

[57] The channel members 50 and 60 are rolled steel sections,

which are structural steel materials produced by hot rolling, and

are called a 'C'-shaped steel section.

[58] The rolled steel sections are thin but have excellent

cross-sectional performance, and are low in material costs and

easy in material supply and demand due to mass production.

[59] Therefore, when the steel beam 4 is manufactured, since the

channel members 50 and 60 having the 'C'-shaped cross section can

be used directly without additional processing, the steel beam 4

can be manufactured without a welding process, thereby resulting

in economic benefits.

[60] Furthermore, since the steel beams are supplied under the

made-to-order production system, material loss can be greatly

reduced.

[61] The first beam module 5 and the second beam module 6 are

horizontally offset from each other in the cross-section, so as

to form a space for pouring concrete inside.

[62] The channel members 50 and 60 which respectively form the

first beam module 5 and the second beam module 6 can make the

upper flanges 51 and 61 and lower flanges 52 and 62 oriented

outward.

[63] However, the steel beam 4 may also be used as a permanent

mold. Therefore, for usability and integration with the internal

concrete (C), it is desirable to arrange the upper flanges 51 and

61 and lower flanges 52 and 62 symmetrically to face the inside

of the members.

[64]

[65] Lower portions of the first beam module 5 and the second

beam module 6 are connected by the lower plate 7, so the steel

beam 4 generally has a U-shaped cross-section.

[66] The lower plate 7 can be used as a flat plate without

additional bending, and can be cut to have an appropriate width

depending on the width of the steel beam 4.

[67] The lower plate 7 is assembled separately from the first

beam module 5 and the second beam module 6. Therefore, the

thickness of the lower plate 7 can be freely selected according

to the bending stress on the steel beam 4, thereby enabling

economical cross-section formation.

[68] To enhance the integration with the concrete (C), a shear

studs (ST) may be attached to the inner surfaces of the channel

members 50 and 60.

[69]

[70] FIG. 3 is a perspective view illustrating a steel beam for

a steel concrete composite beam according to a second embodiment of the present invention.

[71] As illustrated in FIG. 3, the first beam module 5 and the

second beam module 6 may be respectively composed of at least two

layers of channel members 50a and 50b, and 60a and 60b vertically

connected to each other.

[72] The present invention utilizes channel members, which are

steel beam materials produced in mass production at a factory.

However, the factory-produced channel members are limited in size.

[73] Therefore, in a case in which steel beam 4 with a large

depth are required, one beam module 5 or 6 can be formed by

vertically joining channel members.

[74] Accordingly, it is possible to form steel beams 4 with

various depths by combining different types of steel beam

materials.

[75] The flanges 51a and 52b of the channel members 50a and 50b,

which are vertically joined, of the first beam module 5 are

embedded in the concrete (C) poured inside the steel beam 4,

thereby enhancing structural performance by increasing

integration with the concrete (C).

[76] In the same way, the flanges 61a and 62b of the channel

members 60a and 60b, which are vertically joined, of the second

beam module 6 are embedded in the concrete (C) poured inside the

steel beam 4, thereby enhancing structural performance by

increasing integration with the concrete (C).

[77]

[78] FIG. 4 is a perspective view illustrating a prefabricated

module with which a separable steel beam and a deck plate are

integrated, FIG. 5 is a perspective view illustrating a

connection relationship of neighboring prefabricated modules, FIG.

6 is a perspective view illustrating a connection state of neighboring prefabricated modules, and FIGS. 7 and 8 are sectional views illustrating states before and after the connection of the separable steel beams.

[79] As illustrated in FIGS. 4 to 8, the lower plate 7 is fixed

to the lower surfaces of the first beam module 5 and the second

beam module 6. The lower plate 7 can be secured to the lower

flange 62 of the channel member 60 of the second beam module 6 by

coupling bolts (B).

[80] When a slab is constructed on the top of the beam, deck

plates, which are a permanent mold, are often used instead of a

temporary mold.

[81] In the traditional steel concrete slab-beam structure using

steel concrete composite beams and deck plates, a construction

method includes the steps of: first installing steel beams

between the columns or between the girders installed between the

columns; installing deck plates between the neighboring steel

beams, and pouring concrete inside the beams and on top of the

deck plates.

[82] In this case, the deck plates are installed through the

steps of: placing the plurality of dec plates stacked with

multiple layers; installing the deck plates at their installation

positions; and fixing the deck plates to the steel beams by tack

welding or the like.

[83] In this case, since the steel beams and deck plates are

separately installed and each deck plate needs to be positioned

individually, the construction process takes a long time.

Moreover, since the installation work of deck plates is performed

at a high place above the steel beam, there is a risk of falling

accident of a worker.

[84] Therefore, unlike the conventional method where the steel beams and deck plates are separately constructed, the present invention integrates the first beam module 5 and the second beam module 6, which are divided into right and left modules, with the deck plate 8 so as to form a prefabricated module 3 (FIG. 4).

[85] Accordingly, when the prefabricated modules 3 having the

first beam module 5 and the second beam module 6 are sequentially

installed at both ends of the deck plate 8, the first beam module

and the second beam module 6 are joined to the second beam

module 6 and the first beam module 5 of an adjacent prefabricated

modules 3, thereby forming a steel beam 4 (see FIGS. 5 and 6).

[86] In this case, the prefabricated module 3 can be installed

in a state in which the lower plate 7 is prefabricated to the

lower surface of the first beam module 5. After that, the lower

plate 7 is joined to the lower flange 62 of the channel member 60

of the second beam module 6 via coupling bolts (B) on the site in

a state in which the second beam module 6 of the prefabricated

module 3 is held on the top of the lower plate 7, thereby joining

the second beam module 6 to the lower plate 7 (see FIGS. 7 and 8).

[87] As described above, when the prefabricated modules 3 having

the divided steel beams 4 are used, all of the prefabricated

modules 3 in which the first and second beam modules 5 and 6 of

the steel beam 4 are integrated with the plurality of deck plates

8 can be constructed collectively. Therefore, the number of times

of lifting can be reduced remarkably, and the construction period

of time can be also considerably reduced.

[88] Especially, since the deck plate installation, which has a

risk that may cause a falling accident, is carried out in advance

at a factory or on a ground workshop, the present invention

guarantee excellent work safety.

[89] Moreover, in the conventional deck plate construction method, workers had to consider the weight they can handle as they individually carry out the installation of deck plates. That is, the conventional method has a limitation in size of the individual deck plate, and it is difficult to apply the deck plates to long-span slabs.

[90] In contrast, the present invention can eliminate the work

that workers have to install the deck plates on site.

Additionally, since the deck plates 8 are installed in

conjunction with the steel beam 4 by equipment, there is no

limitation in size of the deck plate 8, and the deck plate can be

applied to long-span slabs.

[91]

[92] The lower plate 7 can be prefabricated to the first beam

module 5 by welding or bolt connection.

[93] In this case, one-way bolts can be used to fasten the

coupling bolts (B) in one direction at the lower portion of the

steel beam 4.

[94]

[95] FIG. 9 is a perspective view illustrating an example of tie

plates connected.

[96] As illustrated in FIG. 9, the upper and lower channel

members 50a and 50b, and 60a and 60b of the first beam module 5

and the second beam module 6 are coupled to each other by

coupling bolts (B), and the upper channel member 50b of the first

beam module 5 and the upper channel member 60b of the second beam

module 6 can be mutually connected through a tie plate 9 of which

both ends are coupled to coupling bolts (B) connected to the

corresponding lower flanges 52b and 62b.

[97] In a case of the steel beam 4 with the U-shaped cross

section, right and left webs may be separated by the load during the deck plate work or by lateral pressure during concrete pouring.

[98] Therefore, in a case in which the beam modules 5 and 6 are

formed by stacking the 'C'-shaped channel members in multiple

layers, the right and left beam modules 5 and 6 are supported by

the lower flanges 52b and 62b of the upper channel members 50b

and 60b which are provided in the middle of the beam modules 5

and 6, thereby preventing the steel beams 4 from being separated.

[99] Accordingly, both ends of the tie plate 9 are respectively

fixed to the coupling bolts (B) joined to couple the upper and

lower channel members 50a and 50b, and 60a and 60b, so as to

support the web of the steel beam 4 without welding.

[100]

[101] FIG. 10 is a perspective view illustrating the tie plates,

and FIGS. 11 to 13 are views illustrating a connection process of

the tie plates.

[102] As illustrated in FIGS. 10 to 13, the tie plate 9 includes

a first bolt coupling hole 91 and a second bolt coupling hole 92,

which are respectively formed on both sides of the tie plate and

to which the coupling bolts (B) are respectively fastened. The

first bolt coupling hole 91 is rotatably coupled to the coupling

bolt (B) on the side of the first beam module 5. The second bolt

coupling hole 92 may be opened at one side so as to be joined to

the coupling bolt (B) of the second beam module 6 by rotation of

the tie plate 9.

[103] In a case in which the steel beam 4 is formed in a right

and left division type and is applied to the prefabricated module

3 integrated with the deck plate 8, the tie plate 9 may be

installed after the neighboring right and left prefabricated

modules 3 are installed.

[104] Alternatively, to prevent the omission of installation of

the tie plate 9 and facilitate material management, the tie plate

9 may be prefabricated to the prefabricated module 3 during the

manufacturing stage. For this purpose, the first bolt coupling

hole 91 and the second bolt coupling hole 92 are respectively

formed on both sides of the tie plate 9, and the first bolt

coupling hole 91 may be coupled to the coupling bolt (B) fixing

the upper and lower flanges 51a and 52b of the first beam module

5.

[105] In other words, the tie plate 9 may be prefabricated to the

first beam module 5 before installing the prefabricated module 3.

At this time, the second beam module 6 of the prefabricated

module 3 is joined only to the coupling bolts (B) for coupling of

the upper and lower flange 61a and 61b.

[106] Since the tie plate 9 may be interfered when the

prefabricated module 3 is installed, the first bolt coupling hole

91 of the tie plate 9 may be rotatably coupled to the coupling

bolt (B) fixed to the flanges 51a and 52b of the first beam

module 5, such that the neighboring prefabricated module 3 can be

installed in a state in which the tie plate 9 is rotated toward

the first beam module 5. (FIG. 11). Thereafter, when the tie

plate 9 is rotated toward the coupling bolt (B) which is coupled

to the flanges 61a and 62b of the second beam module 6, the

second bolt coupling hole 92 can be coupled to the coupling bolt

(B) (FIGS. 12 and 13).

[107] To enable this, the second bolt coupling hole 92 is

configured to be opened at one side, such that the coupling bolt

(B) can be inserted and caught.

[108] In order to couple the second bolt coupling hole 92 of the

tie plate 9 to the coupling bolt (B) of the second beam module 6 in a state in which the coupling bolt (B) is coupled in advance, the coupling bolt (B) of the second beam module 6 is installed without being fully tightened, and then is fully tightened after the second bolt coupling hole 92 of the tie plate 9 is coupled.

[109] Of course, the remaining coupling bolts (B) with which the

end portion of the tie plate 9 is not tightened later are pre

tightened to securely fix the upper and lower channel members.

[110]

[111] As illustrated in FIGS. 7 and 8, the channel members 50,

a, 50b, 60, 60a, and 60b are formed to have inwardly sloping

inner surfaces such that the thickness decreases toward the

flange edges. A washer member (W) which is coupled to the

coupling bolts (B) and installed on the inner surface of the

flange may be designed as a tapered washer with increasing

thickness towards the flange edge.

[112] The channel member may be a 'C'-shaped steel beam having a

sloping thickness in which the thickness of the upper flange or

lower flange gradually decreases toward the outside.

[113] In this case, it is difficult to firmly secure the coupling

bolt (B) or the nut attached to the coupling bolt (B) to the

flange, causing inadequate fixation.

[114] Therefore, in a case in which the flange to which the

coupling bolt (B) is fastened is sloped, the washer member (W) of

which one side is sloped to have a slope corresponding to the

slope of the flange is used, such that the coupling bolt (B) can

firmly fasten the upper and lower flanges of the channel member.

[1151

[116] Next, a deck-beam integrated prefabricated module according

to the present invention is to construct a steel composite

concrete slab-beam structure in which deck plates 8 are placed on the upper portions of a plurality of steel beams 4 arranged to be spaced apart from each other and concrete (C) is poured into the steel beams 4 and above the deck plate 8. The deck-beam integrated prefabricated module includes: the deck plate 8; a first beam module 5, which is fixed and coupled to a lower portion of one end portion of the deck plate 8 and corresponds to one side of the steel beam 4 divided into right and left sides; and a second beam module 6, which is fixed and coupled to a lower portion of the other end portion of the deck plate 8 and corresponds to the other side of the steel beam 4 divided into right and left sides (FIGS. 4 to 6, and other figures).

[117] The deck-beam integrated prefabricated module 3 of the

present invention is to construct a steel composite concrete

slab-beam structure utilizing the steel beams 4 and deck plates 8

as a permanent mold.

[118] The steel beam 4 is divided into right and left sides,

namely, divided into the first beam module 5 corresponding to one

side and the second beam module 6 corresponding to the other side,

and the steel beam 4 and the deck plate 8 are integrally

configured.

[119] After arranging the first beam module 5 on one side and the

second beam module 6 on the other side with a gap between the

first beam module 5 and the second beam module 6, the deck plate

8 is placed on the upper portions of the first beam module 5 and

the second beam module 6 to form the deck-beam integrated

prefabricated module 3.

[120] In other words, multiple deck plates 8 are installed on the

upper portions of the divided beam modules 5 and 6 in advance on

a ground workshop or at a factory, and then, are fixed integrally

by welding.

[121] After one prefabricated module 3 is installed, the adjacent

prefabricated modules 3 can be sequentially installed. In this

case, the first beam module 5 of the adjacent prefabricated

module 3 is installed in close contact with the second beam

module 6 of the one prefabricated module 3, such that the

adjacent first beam module 5 and second beam module 6 can be

coupled with each other.

[122] In other words, when the adjacent beam modules 5 and 6 of

the adjacent prefabricated modules 3 are coupled to form a steel

beam 4 with a U-shaped cross-section.

[123] The deck-beam integrated prefabricated module 3 of the

present invention constitutes the same system as the conventional

steel beam-deck plate system in a state in which it is completely

assembled.

[124] The present invention can reduce the number of times of

lifting and shorten the construction period of time since the

prefabricated modules 3 in which the plurality of deck plates 8

and the beam modules 5 and 6 are integrated.

[125] Specifically, since installation work of the deck plate 8

is performed in advance in a factory or on-site, it ensures

excellent work safety. Furthermore, since the deck plates 8 are

installed together with the steel beams 4 by equipment, there is

no limitation in size of the deck plate 8, and it is easy to

apply long-span slabs. Therefore, it is advantageous to apply it

to high-load long-span structures such as logistics warehouses.

[1261

[127] FIG. 14 is a sectional view illustrating a connection

relationship of beam modules according to an embodiment of the

present invention, FIG. 15 is a sectional view illustrating the

connection state of the beam modules illustrated in Figure 14,

FIG. 16 is a sectional view illustrating a connection

relationship of beam modules according to another embodiment of

the present invention, and FIG. 17 is a sectional view

illustrating the connection state of the beam modules illustrated

in Figure 16.

[128] As illustrated in FIGS. 14 to 17, the first beam module 5

and the second beam module 6 respectively include channel members

and 60, which include upper flanges 51 and 61 on which a deck

plate 8 is fixed, webs 53 and 63 bent downwardly and vertically

from one end of each of the upper flanges 51 and 61, and lower

flanges 52 and 62 bent horizontally from the lower ends of the

webs 53 and 63. The first beam module 5 is connected to the

second beam module 6 of the adjacent prefabricated module 3 by

coupling the lower flanges 52 and 62, thereby forming the steel

beam 4.

[129] The first beam module 5 and the second beam module 6 may

include channel members 50 and 60 which include upper flanges 51

and 61, webs 53 and 63, and lower flanges 52 and 62.

[130] Hereinafter, referring to FIGS. 14 and 15, an example is

provided where the second beam module 6 of prefabricated module 3

and the first beam module 5 of the adjacent prefabricated module

3 are installed in close contact to form the steel beam 4.

[131] The upper flanges 51 and 61 is a portion where the end of

the deck plate 8 is placed and fixed, and may be bent inward or

outward of the steel beam 4.

[132] The lower flanges 52 and 62 are formed by bending inward of

the steel beam 4 and are connected to the lower flanges 52 and 62

of the adjacent beam modules 5 and 6.

[133] The first beam module 5 and the second beam module 6 can be

shaped symmetrically in the left and right directions (FIG. 14).

[134] In this case, the inner ends of the lower flange 52 and 62

may be bent upward to form connecting pieces 521 and 621, and the

left and right connecting pieces 521 and 621 can be joined

together with bolts (B) or the like to form the steel beam 4 (FIG.

).

[135] Alternatively, as illustrated in FIGS. 16 and 17, the lower

flange 52 of one beam module (referred to as the first beam

module 5 in the drawing) installed previously is elongated, and

the lower flange 62 of the other beam module (referred to as the

second beam module 6 in the drawing) installed later can be

formed relatively shorter, approximately the same length as the

upper flange 61. Moreover, the lower flange 62 of the other beam

module 6 may be held on the lower flange 52 of the one beam

module 5, and may be coupled via bolts (B) or the likes. In this

case, since the lower flange 62 of the beam module 6 installed

later is placed on the lower flange 52 of the beam module 5

installed previously, the installation height of the

prefabricated module 3 installed later can be adjusted accurately.

[136] A shear studs (ST) for integration with slab concrete may

be attached to the upper surface of the upper flanges 51 and 61.

[137]

[138] As described in FIGS. 7 and 8, a lower plate 7 may be

coupled to the lower flange 52 or 62 of either the first beam

module 5 or the second beam module 6 to interface with the lower

flange 62 or 52 of the other beam module 6 or 5.

[139] As illustrated in FIG. 14, in a case in which the bolt (B)

is joined horizontally in a state in which the connecting pieces

521 and 621 of adjacent beam modules 5 and 6 are in a closely

fitted state, it may be difficult to accurately align the heights

of the connecting pieces 521 and 621

[140] Therefore, as illustrated in FIG. 16, the later installed

beam module 6 can be placed after the lower flange 52 of the

initially installed beam module 5 is elongated. In this case, it

is very inefficient in terms of component manufacturing and

management since the shapes of the first beam module 5 and the

second beam module 6 are different from each other.

[141] Therefore, in order to manufacture the first beam module 5

and the second beam module 6 in the same specifications and place

the later installed beam module 6, a separate lower plate 7 may

be joined to the lower flange 52 of one side.

[142] The lower plate 7 can be secured to the lower flanges 52

and 62 of both beam modules 5 and 6 using bolts (B).

[143] The lower plate 7 may be closely installed on the upper

surface of the lower flanges 52 and 62. In this case, it is

desirable to install the lower plate 7 in close contact with the

lower surface of the lower flanges 52 and 62 since the lower

plate 7 must be installed after the right and left prefabricated

modules 3 are installed.

[144] In other words, in a state in which the lower plate 7 is

previously joined to the lower surface of the lower flange 52 of

the one beam module (referred to as the first beam module 5 in

the drawing), the prefabricated module 3 of one side is installed,

and then, the later installed prefabricated module 3 with the

beam module (referred to as the second beam module 6 in the

drawing) can be placed and coupled on the upper surface of the

lower plate 7.

[145] The lower plate 7 may serve as the lower flange of the

steel beam 4, and the lower flanges 52 and 62 of the steel beam 4

may function as the lower root of the beam. In this case, the

thickness of the lower plate 7 may be adjusted freely. Therefore, the beam module 3 may have a thickness that can support the shearing force of the webs 53 and 63, and the lower plate 7 can select the thickness based on tensile force due to bending moments, thereby enabling an economical design.

[146]

[147] FIG. 18 is a perspective view illustrating an installation

process of neighboring prefabricated modules.

[148] A steel composite concrete slab-beam structure construction

method using the deck-beam integrated prefabricated module

according to the present invention relates to a method for

constructing a steel composite concrete slab-beam structure using

using the deck-beam integrated prefabricated module.

[149] In the present invention, first, (a) the deck-beam

integrated prefabricated module 3 is prepared.

[150] In step (a), the prefabricated module 3 is assembled at a

factory or an on-site fabrication facility (FIG. 4).

[151] The first beam module 5 and the second beam module 6 are

arranged at the left and right to be spaced apart from each other,

and the deck plate 8 is placed on the upper portion and is fixed

by tack welding or the like so as to assemble the prefabricated

module 3.

[152] Preferably, the deck plate 8 is a truss deck having a truss

girder attached to the upper side.

[153] In a case in which the prefabricated module 3 is

manufactured at a factory, the prefabricated module 3 can be

directly lifted and installed on a transportation vehicle without

on-site staging. Accordingly, it is economical since reducing the

operation time of lifting equipment and reducing the construction

period.

[154]

[155] Next, in step (b), the plurality of prefabricated modules 3

are sequentially installed in the transverse direction on one

side of pre-installed columns 1 or girders 2 installed between

the columns 1, and then, a first beam module 5 and a second beam

module 6 of the neighboring prefabricated module 3 are coupled

with each other (FIG. 18).

[156] In other words, after the columns 1 and the girders 2 are

installed, the prefabricated modules 3 are sequentially installed

between the columns 1 or between the girders 2. The beam modules

and 6 of adjacent prefabricated modules 3 are closely fitted

together and coupled to form the steel beam 4.

[157] For the outermost parts of the structure, only the steel

beam 4 without the deck plate 8 can be assembled to complete the

steel beam 4.

[158] Traditionally, it took several hours to install the steel

beam 4 and perform installation of the deck plate 8, but with the

present invention, it takes only about five to seven minutes to

install a single prefabricated module 3, thereby significantly

reducing construction time.

[159]

[160] Finally, in step (c), concrete (C) is poured into the steel

beam 4 formed by the neighboring first and second beam module 5

and 6 and on the upper side of the deck plate 8.

[161] Therefore, after the prefabricated module 3 is installed,

the upper reinforcement bars for the slabs and the beams are

placed, and concrete (C) is poured into the steel beam 4 formed

by the neighboring first and second beam module 5 and 6 and on

the upper side of the deck plate 8, thereby completing the steel

composite concrete slab-beam structure.

Industrial Applicability

[162] The steel beam for a steel concrete composite beam

according to the present invention can apply the channel members

to the first and second beam modules as they are, so can

facilitate material supply and demand, minimize additional

processing and molding processes, and eliminate a welding process,

thereby providing high manufacturability and cost-effectiveness

and excellent structural performance.

Claims

Claims

[Claim 1]

A steel beam for a steel concrete composite beam comprising: a first beam module (5) which includes a channel member (50) consisting of an upper flange (51), a lower flange (52), and a web (53) connecting the ends of the upper and lower flanges (51, 52); a second beam module (6) which includes a channel member (60) consisting of an upper flange (61), a lower flange (62), and a web (63) connecting the ends of the upper and lower flanges (61, 62), and is provided to be spaced apart from the first beam module (5); and a lower plate (7) which connects the lower flanges (52, 62) of the channel member (50) of the first beam module (5) and the channel member (60) of the second beam module (6) with each other.
[Claim 2]

The steel beam according to claim 1, wherein the first beam module (5) and the second beam module (6) are respectively composed of at least two layers of channel members (50a, 50b, 60a, b) vertically connected to each other.
[Claim 3]

The steel beam according to claim 1, wherein the lower plate (7) is fixed to the lower surfaces of the first beam module (5) and the second beam module (6), and the lower plate (7) is secured to the lower flange (62) of the channel member (60) of the second beam module (6) by coupling bolts (B).
[Claim 4]

The steel beam according to claim 2, wherein the upper and

lower channel members (50a, 50b, 60a, 60b) of the first beam

module (5) and the second beam module (6) are coupled to each

other by coupling bolts (B), and the upper channel member (50b)

of the first beam module (5) and the upper channel member (60b)

of the second beam module (6) can be mutually connected through a

tie plate (9) of which both ends are coupled to coupling bolts

(B) connected to the corresponding lower flanges (52b, 62b).
[Claim 5]

The steel beam according to claim 2, wherein the tie plate

(9) includes a first bolt coupling hole (91) and a second bolt

coupling hole (92), which are respectively formed on both sides

of the tie plate and to which the coupling bolts (B) are

respectively fastened, the first bolt coupling hole (91) is

rotatably coupled to the coupling bolt (B) on the side of the

first beam module (5), and the second bolt coupling hole (92) is

opened at one side so as to be joined to the coupling bolt (B) of

the second beam module (6) by rotation of the tie plate (9).
[Claim 6]

The steel beam according to claim 2, wherein the channel

members are formed to have inwardly sloping inner surfaces such

that the thickness decreases toward the flange edges, and a

washer member (W) which is coupled to the coupling bolts (B) and

installed on the inner surface of the flange may be designed as a

tapered washer with increasing thickness towards the flange edge.
[Claim 7]

A deck-beam integrated prefabricated module which is to

construct a steel composite concrete slab-beam structure in which deck plates (8) are placed on the upper portions of a plurality of steel beams (4) arranged to be spaced apart from each other and concrete (C) is poured into the steel beams (4) and on the upper side of the deck plate (8), comprising: a deck plate (8); a first beam module (5), which is fixed and coupled to a lower portion of one end portion of the deck plate (8) and corresponds to one side of the steel beam (4) divided into right and left sides; and a second beam module (6), which is fixed and coupled to a lower portion of the other end portion of the deck plate (8) and corresponds to the other side of the steel beam (4) divided into right and left sides.
[Claim 8]

The deck-beam integrated prefabricated module according to

claim 7, wherein the first beam module (5) and the second beam

module (6) respectively include channel members (50, 60), which

include upper flanges (51, 61) on which a deck plate (8) is fixed,

webs (53, 63) bent downwardly and vertically from one end of each

of the upper flanges (51, 61), lower flanges (52, 62) bent

horizontally from the lower ends of the webs (53, 63), and the

first beam module (5) is connected to the second beam module (6)

of the adjacent prefabricated module (3) by coupling the lower

flanges (52, 62), thereby forming the steel beam (4).
[Claim 9]

The deck-beam integrated prefabricated module according to

claim 8, wherein a lower plate (7) is coupled to the lower flange

(52, 62) of either the first beam module (5) or the second beam module (6) to interface with the lower flange (62, 52) of the other beam module (6, 5).
[Claim 10]

A steel composite concrete slab-beam structure construction

method using the deck-beam integrated prefabricated module

according to claim 7, comprising the steps of:

(a) preparing the deck-beam integrated prefabricated module

(3) according to claim 7;

(b) sequentially installing the plurality of prefabricated

modules (3) in the transverse direction on one side of pre

installed columns (1) or girders (2) installed between the

columns (1), and coupling a first beam module (5) and a second

beam module (6) of the neighboring prefabricated module (3) with

each other; and

(c) pouring concrete (C) into the steel beam (4) formed by

the neighboring first and second beam module (5, 6) and on the

upper side of the deck plate (8).