KR101512944B1

KR101512944B1 - super composite beam assembly

Info

Publication number: KR101512944B1
Application number: KR1020140112252A
Authority: KR
Inventors: 강병구; 이한진
Original assignee: 강병구; 이한진
Priority date: 2014-08-27
Filing date: 2014-08-27
Publication date: 2015-04-16
Also published as: WO2016032215A1

Abstract

The present invention relates to a web plate comprising a pair of web plates spaced apart from each other to form a side plate of a composite beam; A pair of upper flanges that respectively engage with the upper end of the web plate in the shape of a section steel; A lower plate having end flanges vertically bent at both ends, the end flanges being disposed to abut the lower end of the web plate to become a bottom plate of the composite beam; A plurality of through holes formed in the upper side of the web plates and the upper flanges and in the lower side of the web plates and in the end flanges respectively to form upper and lower flanges of the web plates, A first fastening bolt for fastening the end flanges to each other in a horizontal direction; And a first fastening nut. According to the present invention, the composite plate can be assembled using the first fastening bolt and the first fastening nut separately from the web plate and the lower plate, so that the cross-section and thickness of the composite can be variously changed, The arrangement and the workability can be ensured.

Description

Super composite beam assembly}

The present invention relates to a composite beam, and more particularly to a composite large composite beam.

The synthetic bowls currently used in domestic and foreign countries are almost dependent on cold forming. This method is a method of producing a product by putting a coil wound around the main use material in a molding machine, which is widely used in order to minimize the loss of the material and to achieve rapid production.

However, this method uses a non-standard size material rather than a product of a standardized size, which leads to an increase in production cost and financial cost due to an increase in cost due to stock acquisition, excessive investment of the machine, and the like.

Also, most of the products have the exclusive production right for the above reasons, and the price of the product is relatively high due to the application of the profit without the competition.

In the case of a conventional single molding machine, there is a limit to the production of the product. Therefore, when the order is placed at the same time, it is very difficult to observe the actual delivery date.

In addition, although the conventional cold-formed product is used by welding, a distortion of the plate during cold forming may occur, and it is difficult to produce various products when welding is used.

In recent years, the transfer girder, which is necessary for a complex structure such as a rampart structure, a transition layer, and an upper wall structure, such as a residential complex or a large dormitory, And design criteria are not clear. Therefore, even if designing the beam in the form of theoretically possible form or designing in simple form, it is often designed to form a form that is difficult for human to construct.

This causes the designer to overestimate the stress analysis of the load transmitted to the transverse beam by the upper bearing wall. In addition to the above reasons, the cross section of the transverse beam becomes larger due to various reasons of working conditions, In addition, there is also a transition of the shape.

Figs. 1 and 2 are sectional views showing a conventional transition beam, and Figs. 3 and 4 are sectional views showing a conventional composite beam.

For example, if the theoretical beam is not designed to be able to be installed in order to secure a space for passing the pipe in the state where the beam size can not be adjusted as in the case of FIG. 1, or if the stride is 500 A beam having a length of more than 2,000 mm may be designed in a beam that is only mm.

It is difficult to fix the reinforcing bars and precisely match the thickness of the concrete cladding even if the reinforcing bars are previously assembled from outside and put into the molds.

This type of beam is mainly reflected in the structural design, so it is necessary to develop a transition beam that can guarantee the ease of design and construction.

In addition, the existing concrete-filled composite beams (see FIG. 3), which are mainly used for the RC span beams and long span sections, have a beam width of 300 to 400 mm due to limitations in structural design, Most of the products have a height of 1,000 mm or more. Most of these large beams have a web or flange thickness of 12 mm or more and are applied to most of the designs.

In addition, since the thick steel plate (12t or more) is used to form the beam, it can not be formed by molding or bending, and most of the forms are produced by welding the web and flange. In addition, when the height of the beam is high, there is not enough room for the person to enter and weld the inside of the web because the width is narrow with two webs for filling the concrete.

If it is impossible to weld the inside of the web, it is necessary to weld only one side of the web, but completely dissolve the member and the welding rod. It is necessary to perform submerged arc welding for submerged arc welding. No) It is not possible to weld both sides of a composite web with two webs at the same time, so only one web should be welded and the other web welded. In this case, due to the difference in the welding heat cooling time between the welded side of the welded part and the welded part after the welded part firstly, the warped deformation due to heat is seriously caused to the welded side first.

In this way, the welding method of the existing concrete composite beam is large in the deformation due to welding heat during automatic welding, and when it is required to be corrected due to welding defects, it needs to be corrected by the work force. Since the height of the beam is large, Modification is practically impossible.

In addition, in the case of H-beams, it is possible to modify the deformation mechanically by using a knife which can correct the deformation by arranging the rollers on both the upper and lower flanges and the web. On the other hand, The rollers can not be inserted into the inside of the web so that the web can not be mechanically rotated.

For this reason, the conventional synthesis can not be mechanically modified, and the modification to the deformation is an old-fashioned way of making the shape by applying heat to the deformation part by the manpower and quenching with water. It is a reality.

In addition, a conventional composite type beam (see FIG. 3) in which the inside of the web is not welded and welded only to the outside of the web is mainly used, but a semi-automatic type welding method in which relatively less heat is generated, The product is manufactured by applying the welding method which minimizes the thermal deformation.

In this case, if the thickness of the web is thick, it may be troublesome to weld two or three times in order to obtain the welding leg length according to the regulations. In spite of the very large type of receiving the heavy load, The ultrasonic inspection (UT: ULTRA SONIC TESTING) test can not be applied.

To improve the upper and lower flanges of the web (refer to Fig. 4), it is necessary to weld several times to the improvement part in order to obtain the UT inspection result by not welding the heat at one time. In the case where the welded web is welded at a time, it is deformed due to high temperature and it is not easy to produce using the improved weld.

If you overcome these reasons and produce, you will get a rejection part in the UT inspection part. If you modify the welding part, you will dig out the surface of the bad welding part by gauging and fix the back plate inside the web, It is impossible to fix the welding defect because the back plate can not be fixed to the inside of the web.

Since the ultrasound inspection result can not be obtained, it is inevitable to conduct a magnetic particle test (M.T: MAGNETIC TESTING) which inspects only the appearance of the welded portion.

Because the inside of the web can not be welded, even if only one side of the web is manufactured in compliance with the welding regulations, the user or the owner may feel uneasy.

In addition, since the height of the beam web is very long, the width is fixed by arranging the width fixing angles to fix the width to the inside of the beam to fix the web plate, and the width is also fixed. In many cases, the welding process is often poor, and this is also very unreasonable to manufacture, since only the surface of the upper opening of the beam can be welded.

Korean Registered Patent No. 1404515 (Apr. 201, 201), "3-Piece Hybrid Beam and Its Fabrication Method" Korean Registered Patent No. 1186267 (2012. 09.20), "Hybrid Composite"

SUMMARY OF THE INVENTION An object of the present invention is to provide a prefabricated large composite beam capable of ensuring effective arrangement and workability of a transition beam.

Another object of the present invention is to provide an assembled large composite beam capable of improving the irrationality of the transition structure of the RC structure and improving and supplementing the disadvantages of the conventional concrete filled composite beam and effectively coping with the long span building.

In order to accomplish the above object, a prefabricated large composite view according to an embodiment of the present invention includes a pair of web plates spaced apart from each other to form a side plate of a composite beam; A pair of upper flanges that respectively engage with the upper end of the web plate in the shape of a section steel; A lower plate having end flanges vertically bent at both ends, the end flanges being disposed to abut the lower end of the web plate to become a bottom plate of the composite beam; A plurality of through holes formed in the upper side of the web plates and the upper flanges and in the lower side of the web plates and in the end flanges respectively to form upper and lower flanges of the web plates, A first fastening bolt for fastening the end flanges to each other in a horizontal direction; And a first fastening nut.

Here, the head of the first fastening bolt faces outward, and the first fastening nut can engage with the first fastening bolt from the inside.

Further, the lower plate may further include a pair of fixing plates for tensioning the wire on the lower side.

In addition, the end flange may be bent toward the lower side of the composite beam.

Further, the end flange abutting the lower side of the web plate may be arranged to abut on the inside of the web plate.

In addition, between the upper end of the web plate and the upper flange, a first filler plate may be further included in the longitudinal direction for tensile reinforcement.

Further, the web plates may further include a second filler plate in the longitudinal direction for tensile reinforcement, respectively, outside the lower portions of the web plates.

Further, on the outer side of the second filler plate, a d-shaped steel or a -shaped steel may be further included in the longitudinal direction for lower reinforcement.

In addition, a plurality of brackets and a fixing plate may be further provided on the upper portion of the web plates to prevent the wing.

A pair of first reinforcing steel members longitudinally joined to the inside of a central portion of the web plates in a shape of a steel as a structural member; And a first horizontal plate coupled to the first reinforced steel in a horizontal direction, wherein the second bolt and the second bolt fasten the first reinforced steel and the web plate to each other in the horizontal direction, And a third fastening bolt and a third fastening nut for fastening the first reinforcement steel and the first horizontal plate in a direction perpendicular to each other.

Further, the lower plate may separately include two divided lower plates each having a pair of end flanges, each of the divided lower plates may be formed such that the outer end flange is bent toward the lower side of the composite beam, The flange may further include a fourth fastening bolt and a fourth fastening nut that are bent toward the upper side of the synthetic bobbin and fasten the inner end flanges to each other in the horizontal direction.

In addition, the end flange can be bent toward the upper side of the composite beam.

In addition, the lower plate may include a pair of second reinforcing steel members which are longitudinally joined to the inside of a lower portion of the web plates in the shape of a steel as a structural member; And a second fastening bolt for fastening the second reinforcing steel and the second horizontal plate to each other in the vertical direction, and a fifth fastening nut for fastening the second reinforcing steel and the second horizontal plate to each other in the vertical direction .

According to the assembled large composite bow according to the embodiment of the present invention,

First, the web plate and the lower plate are separately provided, and the composite beam can be assembled using the first fastening bolt and the first fastening nut, so that the cross-section and thickness of the composite beam can be variously changed, .

Second, the upper flange and the lower plate are joined by the first fastening bolt and the first fastening nut, thereby eliminating the cause of deformation caused by welding, which is a conventional composite welding method. can do.

Third, the head of the first fastening bolt faces outward, and the first fastening nut is coupled with the first fastening bolt from the inside, so that the finish can be maintained neat from the outside.

Fourth, by folding the end flange toward the lower side of the composite beam, the joint between the first fastening bolt and the first fastening nut can be fixed from the outside of the composite bracket, so that it can be easily applied.

Fifth, when the end flange is bent toward the lower side of the composite beam and the fusing plate is disposed, the outer steel can protect the steel wire when the wire tension is reinforced or the steel wire is reinforced, and the construction state of the steel wire can be confirmed from the outside, It is easy to review.

Sixth. In order to reinforce the tensile strength and cross-sectional performance, a first filler plate is applied to the upper end of the composite beam and a second filler plate is inserted at the center of the composite beam to reinforce the cross- While minimizing cross-sectional performance.

Seventh, the lower portion of the web plate may be reinforced by including a longitudinal section or a longitudinal section in the longitudinal direction.

Eighth, a plurality of brackets and a fixing plate are provided inside the upper portion of the web plate to prevent the assembled large composite bow from spreading.

Ninth, it is possible to arrange the first reinforcing steel in the entire lengthwise direction of the composite beam inside the center portion of the web plate to meet the limit of the width-to-thickness ratio of the packed composite member compression steel member subjected to warping with respect to the height of the composite beam, It is possible to easily arrange the width of the composite beam by disposing the first horizontal plate which is coupled in the horizontal direction.

In the tenth, it is possible to carry out both the primary assembly, which forms the basic form of the composite beam, and the secondary assembly, which processes the column and composite beams to be assembled in the field at the same time.

1 and 2 are sectional views showing a conventional transition beam.
3 and 4 are sectional views showing a conventional composite beam.
5 is a cross-sectional view illustrating a large-size composite composite beam according to an embodiment of the present invention.
6 is an exploded cross-sectional view of the assembled composite beam shown in Fig.
7 is a cross-sectional view of a large-sized composite composite beam according to another embodiment of the present invention.
FIG. 8 is a side view of a composite large composite beam according to another embodiment of the present invention.
9 is a cross-sectional view illustrating a large-sized composite composite beam according to another embodiment of the present invention.
FIG. 10 is a cross-sectional view showing a large-sized composite composite beam according to another embodiment of the present invention.
11 is a cross-sectional view showing a composite large-size composite beam according to another embodiment of the present invention.
12 is an exploded sectional view of the assembled composite beam shown in Fig.
13 is a cross-sectional view of a large-sized composite composite beam according to another embodiment of the present invention.
FIG. 14 is a cross-sectional view of a composite large-size composite beam according to another embodiment of the present invention.
15 is an exploded cross-sectional view of the assembled composite beam shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.

Fig. 5 is a cross-sectional view showing a large-sized composite composite beam according to an embodiment of the present invention, Fig. 6 is a exploded sectional view of the composite composite beam shown in Fig. 5, Fig. 7 is a cross- 8 is a side view showing a large-sized composite composite beam according to another embodiment of the present invention, and FIG. 9 is a sectional view showing a large-sized composite composite beam according to another embodiment of the present invention.

5 to 7, the assembled large composite bow CB includes a pair of web plates 100, a pair of upper flanges 200, a lower plate 300, And includes a fastening bolt 400 and a first fastening nut 500. The prefabricated composite beams CB fill concrete in the interior of the pair of web plates 100 and the bottom plate 300, which are external structural members in the field.

The pair of web plates 100 are spaced apart from each other to form a side plate of the composite beam. The pair of upper flanges 200 are respectively coupled to the outside of the upper end of the web plate 100 in the form of a-shaped steel.

The lower plate 300 has end flanges 310 vertically bent at both ends and an end flange 310 is disposed to abut the lower end of the web plate 100 so as to be a bottom plate of the composite beam. The end flange 310 abutting the underside of the web plate 100 may be disposed to abut on the inside of the web plate 100.

The end flange 310 may be bent toward the underside of the composite. The end flange 310 is bent toward the lower side of the synthetic bobbin to facilitate fastening of the first fastening bolt 400 and the first fastening nut 500, which will be described later.

The lower plate 200 may be provided with a plurality of stud bolts S as required. When the lower plate 200 is manufactured to a standard size, bending and molding can be simplified, and thus the fabrication can be increased.

The thicknesses of the two web plates 100 and the lower plate 300 are different from each other so that unnecessary use of the steel material can be avoided and economic efficiency can be secured.

The first fastening bolt 400 and the first fastening nut 500 have a plurality of through holes 100a formed in the upper side of the web plates 100 and a plurality of through holes 100b formed in the upper flanges 200, The upper side of the web plates 100 and the upper flanges 200 are fastened to each other in the horizontal direction through the holes 200a.

The first fastening bolt 400 and the first fastening nut 500 have a plurality of through holes 100b formed in the lower side of the web plates 100 and a plurality of through holes 100b formed in the end flanges 310, Through holes 310a to fasten the lower and end flanges 310 of the web plates 100 horizontally to each other.

The first fastening bolt 400 and the first fastening nut 500 may be used for high strength bolts for construction purposes. The amount of the first fastening bolt 400 and the first fastening nut 500 may be increased by increasing the load of the composite bolt or by increasing the interval between the web plate 100 and the upper flange 200 It is possible to increase the workability and safety.

Here, the head of the first fastening bolt 400 faces outward, and the first fastening nut 500 is coupled to the first fastening bolt 400 from the inside. The head of the first fastening bolt 400 is directed outward and the first fastening nut 500 is coupled with the first fastening bolt 400 from the inside so that the finish can be maintained neat from the outside.

Meanwhile, as shown in FIGS. 7 and 8, the lower plate 300 may further include a pair of fixing plates 600 for wire tension on the lower side. The wire can be tensioned by inserting and fixing the wire into the through hole 600a formed in the fixing plate 600. [

8 and 9, a first filler plate 610 may be further provided between the upper end of the web plate 100 and the upper flange 200 in the longitudinal direction for tensile reinforcement.

In addition, the web plates 100 may further include a second filler plate 620 in the longitudinal direction for tensile reinforcement.

8, the first filler plate 610 is provided at the end E of the beam and the second filler plate 620 is provided at the center C of the beam. The fixation of the fixation plate 600 described above with reference to FIGS. 7 and 8 is secured to the fixed portion of the second filler plate 620, that is, the strong rib, which is a portion where the steel is concentrated.

As shown in FIG. 9A, the second filler plate 620 may further include a longitudinal section 710 in the longitudinal direction for lower reinforcement, as shown in FIG. 9 (b) And may further include a longitudinal section 720 in the longitudinal direction.

5 and 6, the web plates 100 further include a plurality of brackets 810 and a fixing plate 820 to prevent flare.

The plurality of brackets 810 are fixed toward the inside of the composite beam and the fixing plate 820 is coupled to the brackets 810 facing each other by the first fastening bolt 400 and the first fastening nut 500 .

5 and 6, the assembled large composite bow CB further includes a pair of first reinforcing bars 910 and a first horizontal plate 920, and the second fastening bolts 931 and A second fastening nut 932, a third fastening bolt 941 and a third fastening nut 942. [

The pair of first reinforcing sections 910 are longitudinally coupled to the inside of the central portion of the web plates 100 in the shape of a steel as a structural member and the first horizontal plate 920 is joined to the first reinforcing section 910 And is coupled in the horizontal direction.

The second fastening bolt 931 and the second fastening nut 932 are inserted through the through hole 910a formed in the first reinforced steel pipe 910 and the through hole 100c formed in the web plate 100, (910) and the web plate (100) to each other in the horizontal direction.

The third fastening bolt 941 and the third fastening nut 942 are fastened through the through hole 910b formed in the first reinforced steel pipe 910 and the through hole 920a formed in the first horizontal plate 920, The section steel 910 and the first horizontal plate 920 are fastened to each other in the vertical direction.

FIG. 10 is a cross-sectional view showing a large-sized composite composite beam according to another embodiment of the present invention.

Referring to FIG. 10, the lower plate 300 separately includes two divided lower plates 300 'each having a pair of end flanges 311' and 312 ', unlike the above-described embodiment.

Here, the outer end flange 311 'of each divided lower plate 300' is bent toward the lower side of the composite beam, and the inner end flange 312 'is bent toward the upper side of the composite beam.

The fourth fastening bolt 313 'and the fourth fastening nut 314' fasten the inner end flanges 312 'horizontally to each other.

Fig. 11 is a cross-sectional view of a large-sized composite composite beam according to another embodiment of the present invention, Fig. 12 is a exploded sectional view of the composite composite beam shown in Fig. 11, to be.

11 and 12, unlike the above-described embodiment, the end flange 310 is bent toward the upper side of the composite beam. Here, as shown in FIG. 13, the lower plate 300 may further include a pair of fixing plates 600 for wire tension, as required.

FIG. 14 is a cross-sectional view of a composite large-size composite beam according to another embodiment of the present invention, and FIG. 15 is an exploded cross-sectional view of the composite composite beam shown in FIG.

Referring to FIGS. 14 and 15, the lower plate 300 includes a pair of second reinforcing steel 320 and a second horizontal plate 330 separately from the previously described embodiment.

The pair of second reinforced steel strips 320 are longitudinally joined to the inside of the lower portion of the web plates 100 in the shape of a steel as a structural member. The second horizontal plate 330 is coupled horizontally with the second reinforced steel 320.

The fifth fastening bolt 340 and the fifth fastening nut 350 are inserted through the through hole 320a formed in the second reinforcing steel 320 and the through hole 330a formed in the second horizontal plate 330, And the section steel 320 and the second horizontal plate 330 are fastened to each other in the vertical direction.

Another through hole 320b is formed in the second reinforced steel 320 so as to be coupled to the web plate 100 by the first fastening bolt 400 and the first fastening nut 500. [

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

100 ... web plate 200 ... upper flange
300 ... lower plate 400 ... first fastening bolt
500 ... second fastening bolt

Claims

A pair of web plates spaced apart from each other to form a side plate of the composite beam;
A pair of upper flanges that respectively engage with the upper end of the web plate in the shape of a section steel;
A lower plate having end flanges vertically bent at both ends, the end flanges being disposed to abut the lower end of the web plate to become a bottom plate of the composite beam;
A plurality of through holes formed in the upper side of the web plates and the upper flanges and in the lower side of the web plates and in the end flanges respectively to form upper and lower flanges of the web plates, A first fastening bolt and a first fastening nut for fastening the end flanges to each other in a horizontal direction;
A pair of first reinforcing steel members longitudinally joined to the inside of a central portion of the web plates in the shape of a steel as a structural member;
A first horizontal plate coupled to the first reinforcing steel in a horizontal direction;
A second fastening bolt and a second fastening nut for fastening the first reinforced steel and the web plate in a horizontal direction; And
And a third fastening bolt for fastening the first reinforcing steel and the first horizontal plate in a direction perpendicular to the first fastening bolt and the third fastening nut.

The method according to claim 1,
Wherein the head of the first fastening bolt faces outward and the first fastening nut engages with the first fastening bolt from the inside.

The method according to claim 1,
Wherein the lower plate comprises:
And a pair of fixing plates for tensioning the wire on the lower side.

The method according to claim 1,
And the end flange is bent toward the lower side of the composite beam.

The method of claim 4,
The end flange, which abuts the underside of the web plate,
And is disposed in contact with the inside of the web plate.

The method according to claim 1,
Between the upper end of the web plate and the upper flange,
And further comprises a first filler plate in the longitudinal direction for tensile reinforcement.

The method according to claim 1,
On the outside of the lower portion of the web plates,
And further comprises a second filler plate in the longitudinal direction for tensile reinforcement.

The method of claim 7,
On the outside of the second filler plate,
And further comprises a longitudinal section or a longitudinal section for the lower reinforcement.

The method according to claim 1,
Inside the upper portion of the web plates,
Further comprising a plurality of brackets and a fixing plate for preventing the wing from spreading.

delete

The method according to claim 1,
The lower plate separately includes two divided lower plates each having a pair of end flanges,
Each divided lower plate has,
The end flange on the outer side is bent toward the lower side of the composite beam and the inner side flange is bent toward the upper side of the composite beam,
Further comprising a fourth fastening bolt and a fourth fastening nut for fastening the inner end flanges to each other in a horizontal direction.

The method according to claim 1,
And the end flange is bent toward the upper side of the composite beam.

The method of claim 12,
Wherein the lower plate comprises:
A pair of second reinforcing steel members longitudinally joined to an inner lower portion of the web plates in the shape of a steel as a structural member; And
And a second horizontal plate coupled to the second reinforcing steel in a horizontal direction,
Further comprising a fifth fastening bolt and a fifth fastening nut for fastening the second reinforcing steel and the second horizontal plate in a perpendicular direction to each other.