KR101273156B1 - Composite structure of corugated steel plate web-psc composite girder with cover type connect member - Google Patents

Abstract

PURPOSE: A composite structure of concrete and a corrugated steel web plate of a corrugated steel web plate prestressed concrete synthetic girder using a cover type connection member is provided to efficiently supplement a structural property of the corrugated steel web plate which is weak in bending and to conveniently connect the corrugated steel web plate and the concrete. CONSTITUTION: A composite structure of concrete and a corrugated steel web plate of a corrugated steel web plate prestressed concrete synthetic girder using a cover type connection member comprises a corrugated steel web plate(10), upper and lower concrete(30,40), and a cover type connection member(20). The upper and lower concrete is individually placed on the upper end and the lower end of the corrugated steel web plate. The cover type connection member fixes the upper end and the lower end of the corrugated steel web plate in a longitudinal direction and is integrally embedded in the concrete and the upper and lower end of the corrugated steel web plate.

Description

Composite structure of corugated steel plate web-PSC composite girder with cover type connect member}

The present invention relates to an abdominal corrugated steel sheet prestressed concrete composite girder (Composite Girder), and more specifically I-shaped or T that composites concrete on the upper and lower sides of an abdominal corrugated steel sheet using a corrugated steel sheet as an abdominal (Web) member In the form of a composite girder such as a female shape, a closed single box type, and a multiple box type, a cover-type connecting member having various shapes to constrain the upper and lower ends of the abdominal corrugated sheet in the longitudinal direction when the abdominal corrugated sheet and concrete are combined. To prevent the occurrence of distortion due to the characteristics of the shape of the abdominal corrugated steel sheet, the composite of the abdominal corrugated steel sheet prestressed concrete using the cover type connecting member that can perform the role of the bending stress stiffener and the role of the shear connecting member at the same time A composite structure of an abdominal corrugated steel plate of girder and concrete.

Absorption corrugated steel sheet Prestressed concrete (PSC) composite structure used in bridges is a structure that reduces the weight of the mold, which is the superstructure of the bridge, by 20-30% by replacing the abdominal member of the superstructure with lightweight corrugated steel. The bending moment is to resist the upper and lower concrete, and the shear force is to resist the corrugated steel plate of the abdomen. It has the accordion effect that can effectively introduce prestress into concrete as it is freely flowing steel sheet without any additional stiffness. To take advantage of this Due to the reduced weight of the mold, the cross-section and scale of the bridge substructure can also be significantly reduced. In addition, it is possible to shorten the air and reduce the construction cost by improving the field workability by omitting the abdominal reinforcing bar and concrete work which require the most foam.

As a background technology of the present invention, Patent Registration No. 0561510 "Synthetic structure in which corrugated steel sheet and concrete are combined with base steel and stud in abdominal corrugated steel sheet PS composite structure" (Patent Document 1). In the background art, as shown in Figure 6, in the upper structural form of the abdominal corrugated steel sheet and the PS concrete is attached to the abdominal corrugated steel plate and concrete, the longitudinally shaped steel in the upper and lower ends of the abdominal corrugated steel sheet (A-shaped steel) (8) is coupled to the left and right symmetry, but the coupling bolt (9) in each joint surface of the abdominal corrugated steel plate (1) in contact with the vertical portion of the non-reversed steel (A-shaped steel) (8) (A-shaped steel) (8) and the abdominal corrugated steel sheet (1) to be a unitary structure and a number of studs (3) are joined to the horizontal plane of the base-shaped steel (A-shaped steel) (8) by welding the abdominal corrugated steel sheet (1) We propose a composite structure of the abdominal corrugated steel sheet and concrete, characterized in that the upper and lower ends of the) and the base steel (a-shaped steel) (8) and the stud (3) are integrally embedded.

However, the background art is to install two separate studs (3) on two base steel (8) provided separately from each other on the left and right sides of the abdominal corrugated sheet symmetrically on both left and right sides. The base steel (A-shaped steel) (8) is not integral to each other, but behaves separately and is not effective at all against warping and bending stresses. It is a structure to be done. In particular, the abdominal corrugated steel sheet is a structure that is unfavorable to warpage and bending stress, and if the coupling connection member such as the base steel (8) can clearly compensate for it, it acts as a more efficient structure in the whole bridge. It can be a connection structure that can be together, but there is a limit that does not reliably satisfy this as described above with the background art.

Patent Registration No.0561510

The present invention is to solve the above problems, in the composite girder using a corrugated steel sheet as the abdominal member and composite the concrete on the upper and lower ends of the abdominal corrugated sheet, various cross-sectional shapes when the abdominal corrugated sheet and concrete are combined A cover member made of a shaped steel with a shape that covers the top and bottom of the abdominal corrugated sheet like a cap in the longitudinal direction, effectively complementing the structural characteristics of the abdominal corrugated sheet, which is particularly susceptible to warpage, and at the same time, the abdominal corrugated sheet and concrete The purpose is to provide a composite structure of the abdominal corrugated steel sheet and concrete of the composite composite girder of the abdominal corrugated steel sheet to be easily combined.

The present invention consists of steel and abdominal corrugated steel sheet having a curved shape in a regular form, the upper and lower concrete synthesized on the upper and lower, and the upper or lower or upper and lower ends of the abdominal corrugated steel in the longitudinal direction Absorption corrugated pre-stressed concrete using a cover-type connecting member, characterized in that the upper and lower or upper and lower ends and the cover-type connecting member integrally embedded in the upper and lower concrete, respectively, Provides composite structure of abdominal corrugated steel plate of composite girder and concrete.

In addition, the cover connecting member may be composed of a U-shaped cover connecting member having a U-shaped cross section, H-shaped cover connecting member having an H-shaped cross section, and the like for studs, connecting holes, restraint bars for shear connection. You can choose to use it.

According to the present invention, a cover-type connecting member covering the upper and lower ends of the abdominal corrugated steel sheet with a single U-shaped or C-shaped steel as a cap is bound to the abdominal corrugated steel plate with bolts and nuts, which is vulnerable to warpage and bending stress. In addition to complementing the structural characteristics of the abdominal corrugated steel sheet effectively, the cover type connecting member is composed of a single member, and the abdominal corrugated steel sheet can be easily fixed as a bolt and a nut, thereby simplifying the manufacturing process and reducing costs. This is a very useful effect.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a partially cutaway perspective view of a first embodiment of the abdominal corrugated steel sheet prestressed concrete composite girder having a cover-type connecting member of the present invention,
Figure 2 is a perspective view showing a coupling state of the lid-type connection member of Figure 1,
3A is a cross-sectional view of FIG. 1;
3B is a cross-sectional view of another embodiment of FIG. 3A;
Figure 4a is a cross-sectional view of a second embodiment of the abdominal corrugated steel sheet prestressed concrete composite girder having a cover-type connecting member of the present invention,
4B is a cross-sectional view of another embodiment of FIG. 4A;
5 is a cross-sectional view of one embodiment of the abdominal corrugated steel sheet prestressed concrete composite box girder of the present invention,
Figure 6 is a partially separated perspective view of a conventional base steel (a-shaped steel) and the stud is coupled to the corrugated steel sheet.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

 Hereinafter, the technical structure of the present invention will be described in detail with reference to the preferred embodiments.

The composite structure of the abdominal corrugated steel sheet and concrete of the abdominal corrugated steel sheet prestressed concrete composite girder using the cover-type connection member of the present invention is the concrete (30) and the upper and lower portions of the composite In synthesizing the (40), by coupling the cover type connecting member 20 of various shapes in the longitudinal direction at the top or bottom or top and bottom of the abdominal corrugated steel sheet 10, the top or bottom of the abdominal corrugated steel sheet 10 or The upper and lower ends and the cover type connecting member 20 are integrally embedded together in concrete, and the abdominal corrugated steel sheet 10 and concrete are irrespective of a shape such as an I-shape, a T-shape, a closed single box, and a multi-box shape. It can be applied to all composite girders, such as a composite beam girder or a composite box girder of a beam type that synthesizes (30) and 40.

1 is a partially cutaway perspective view of a first embodiment of the abdominal corrugated steel sheet prestressed concrete composite girder having a cover-type connection member of the present invention, Figure 2 is a perspective view showing a coupling state of the cover-type connection member of FIG.

1 and 2, the composite structure of the abdominal corrugated steel sheet and concrete of the abdominal corrugated steel sheet prestressed concrete composite girder using the cover-type connecting member of the present invention, the abdominal corrugated steel sheet 10 and its upper and lower ends In synthesizing the concrete 30, 40 respectively configured in the, the cover-shaped connecting member 20 of various shapes are coupled longitudinally at the upper and lower ends of the abdominal corrugated steel sheet 10, the abdominal corrugated steel sheet 10 The top or bottom of the cover-type connecting member 20 will be embedded together in one piece of concrete.

Cover type connecting member 20 is configured in a variety of shapes so that the upper and lower ends of the abdominal corrugated steel sheet 10 is coupled to each other in the longitudinal direction.

The shape of the cover type connecting member 20 may be composed of a U-shaped cover member 210 having a U-shaped cross-section, a H-shaped cover member 220 having an H-shaped cross section.

3A is a cross-sectional view of FIG. 1, and FIG. 3B is a cross-sectional view of another embodiment of FIG. 3A.

As shown in Figure 3a, the U-shaped cover member 210 is formed in the U-shape cross-sectional shape, it is coupled so that the top, bottom of the abdominal corrugated steel sheet 10 is inserted into the concave portion. The U-shaped cover member 210 is composed of a horizontal member 211 forming a horizontal plane on the top and two parallel vertical members 212 configured to be coupled vertically downward of the horizontal member 211. The horizontal member 211 is in contact with the upper and lower portions of the abdominal corrugated steel sheet 10 in the concave portion, the horizontal member 212 of both sides to be in contact with each surface of the abdominal corrugated steel sheet 10, the irregularities are repeated. And each side of the abdominal corrugated steel sheet 10 which abuts on both horizontal members 212 as bolts 50.

As described above, by coupling the coupling bolt 50 to each surface of the abdominal corrugated steel plate 10 which is in contact with the vertical member 212 of the U-shaped connecting member 210, the upper or lower end of the abdominal corrugated steel plate 10 and The U-shaped cover member 210 is to be embedded together in one piece of concrete. Studs 225 are attached to both outer surfaces of the vertical member 212 at regular intervals so that the abdominal corrugated steel sheet 10 and the upper and lower concrete 30 and 40 may be configured to act as shear connectors. have.

In addition, the horizontal member 211 may be configured to be formed through the first connection hole 215 at a predetermined interval, as described above, the c-shaped cover member 210 in the concrete 30, 40 is made of Since the first connection hole 215 is formed through the concrete, and the concrete continues through the first connection hole 215, the first connection hole 215 is eventually connected to the concrete 30 and 40 with the c-shaped cover. Constraining the member 210 together in all directions, which can secure the effect of binding the entire structure of the abdominal corrugated steel sheet 10 and the concrete 30, 40 into a stronger structure.

In addition, as shown in Figure 3b, the horizontal member 211 may be formed in the same width as the width of the vertical member 212 is configured in parallel, both ends are more than the width of the vertical member 212 is configured in parallel It may be configured to protrude. This increases the length of the horizontal member 211 embedded in the upper and lower concrete 30, 40 in the transverse direction so that a larger or thicker cross-section of the concrete 30, 40 structure or the width of the transverse direction is very large. In order to be able to be combined sufficiently stable even in a wide concrete 30, 40 structure.

FIG. 4A is a cross-sectional view of a second embodiment of a double wave steel plate prestressed concrete composite girder having a lid-shaped connecting member of the present invention, and FIG. 4B is a cross-sectional view of another embodiment of FIG. 4A.

As shown in Figure 4a, the H-shaped connecting member 220 is composed of a web 221 and the flanges (222a, 222b) formed on the left and right sides of the web 221 in the center to have an H-shaped cross section It is formed to have a concave opening on the bottom in the state where the web 221 is horizontal, and the upper and lower ends of the abdominal corrugated steel sheet are respectively inserted into the opening. In addition, the other one side flange (222a) (222b) that is not inserted into the upper, lower end of the abdominal corrugated steel sheet 10 may be formed to be formed through the second connection holes (223a) (223b) at a predetermined interval, which is concrete In order to make the 30 and 40 penetrate through the second connecting holes 223a and 223b, they are formed in a continuous unit which is not disconnected by the flanges 222a and 222b of the H-shaped connecting member 220. to be. As described above, the H-shaped connecting member 220 in the concrete 30 and 40 has a second connection hole 223a and 223b therethrough, so that the concrete continues through the second connection hole 223a and 223b. Therefore, in the end, the second connecting holes 223a and 223b constrain the concrete 30 and 40 and the H-shaped connecting member 220 together in all directions, which means that the abdominal corrugated steel sheet 10 and It is possible to secure the effect of binding the entire structure of the concrete 30, 40 in a stronger structure more strongly.

In addition, a stud 225 is attached to the outer surface of the flanges (222a, 222b) at regular intervals so as to act as a shear connector when the abdominal corrugated steel plate 10 and the upper and lower concrete 30, 40 are coupled. It can also be configured.

In addition, as shown in Figure 4b, the second connection hole (223a, 223b) of the flanges (222a, 222b) may be coupled to the constrained reinforcing bars 224 of a predetermined length through. The second connecting hole (223a) (223b) to form a restraint reinforcing bar 224 to act as a separate shear connector, the abdominal corrugated steel plate 10 made of steel and the upper and lower concrete (30, 40) Can lead to full synthesis of the liver. Constrained reinforcing bars 224 having a predetermined length are positioned through the second connecting holes 223a and 223b, respectively, and are configured by combining various known methods such as welding.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: abdominal corrugated steel sheet
20: cover type connecting member
210: U-shaped cover connecting member
211: horizontal member
212 vertical member
215: first connector
220: H-shaped connecting member
221 web
222a, 222b: flange
223a, 223b: second connection hole
224: restraint bars
225: stud
30: Upper concrete
40: Lower concrete
50: Bolt

Claims (9)

Abdominal corrugated steel sheet 10 composed of steel and having a curved shape in a regular shape, upper and lower concretes 30 and 40 synthesized on the upper and lower portions thereof, and an upper end of the abdominal corrugated steel sheet 10. Or is composed of a cover type connecting member 20 for restraining the lower or upper and lower ends in the longitudinal direction,
The cover type connecting member 20 is formed of a H-shaped connecting member 220 having an H-shaped cross section composed of flanges 222a and 222b respectively formed on the left and right sides of the web 221 and the web 221. The upper, lower, or upper and lower ends of the abdominal corrugated steel sheet 10 are inserted into and coupled to a space formed on one side of the web 221 and the flanges 222a and 222b, respectively.
Second connection holes 223a and 223b are formed at both ends of the flange 222a and 222b on the other side of the cover-type connecting member 20 which are not coupled to the upper and lower ends of the abdominal corrugated steel sheet 10. The restraint reinforcing bars 224 having a predetermined length are coupled to the second connection holes 223a and 223b of the flanges 222a and 222b.
An upper concrete 30 or a lower concrete 40 or an upper and lower concrete 30 are integrally formed with the upper and lower or upper cover bottoms of the abdominal corrugated steel sheet 10 and the abdominal corrugated steel sheet 10. A composite structure of the abdominal corrugated steel sheet and concrete of the abdominal corrugated steel sheet prestressed concrete composite girder using a cover-type connecting member, each embedded in (40). delete delete delete delete delete delete delete delete

Images