KR100872959B1 - Tsc beam formed with folded in top flanges - Google Patents

Abstract

A TSC beam with an upper flange folded inward is provided to use exclusively for the production of a pillar by transforming a little the cross section of a TSC beam under production in a factory and to utilize as a TSCIV beam according to circumstances. A TSC beam with an upper flange folded inward comprises an upward opening cross section manufactured by joining symmetrically two cross sections which are formed in the C-shape with an upper flange(5), a lower flange(9) and a web(10), and a space capable of being filled with concrete when placing a slab through an opening space is provided in the upward opening cross section, and has a trench shaped cross section by forming an Y-shaped projection(6a) by putting L-shaped projections into contact with each other at the end of the lower flange, and welding integrally at the outside of the lower flange of the Y-shaped projection.

Description

The TSC beam (TSC beam) with the upper flange folded inward {TSC beam formed with folded in top flanges}

The shape of the TSC beam applied to the current practice in the steel concrete beam utilizing the combined strength of steel and concrete is four types from FIG. 1 to FIG. 3. However, despite the fact that the columns suitable for joining these TSC beams have not been developed, it is difficult to construct a separate steel section for the production of steel composite columns (plant length is 120 m, Is two places) is burdensome. Therefore, the purpose of the TSC IV beam is to transform the beam cross-section of the current factory to the production of the column by modifying it slightly, and to use it as a TSC IV beam (Fig. 4) in some cases.

The most preferred form of column section is quadrilateral. However, since the size of pillars varies depending on the floor, floor load, and number of floors of the building, it is impossible to order pillars of any desired size. Therefore, if the existing TSC III beam (3) is used, it is possible to form the columns by using the TSC beams already in the factory. Therefore, it is a technical task of the present invention to find a new TSC beam cross-section which is a material capable of producing a quadrangular prism without greatly changing the existing equipment for producing the formed TSC beam.

When the a-shaped projections 6 corresponding to the upper bottleneck of the upper flange 5 on the left and right sides of the cross section of the TSC III beam (FIG. 3) being manufactured by cold-forming the hot-rolled coil are removed, The half cross section of the TSC IV beam 4 is formed by the vertical web 10, the upper flange 5 and the lower flange 5, (9), and the end of the lower flange of the C-shaped cross section is provided with a small " And the two halves are continuously welded to each other with the projections facing each other and the lower flange facing each other. As a result, a pair of a-shaped protrusions 6 meet each other at the center of the lower flange of the box-shaped section with the upper part opened, and the Y-shaped protrusions 6a are formed. Therefore, when viewed in large scale, it forms a trench form with projections that integrate two large c-shaped sections.

The side jaws (upper flange (5)) used when laying the truss deck for the floor slab in the steel concrete composite beam are subjected to compressive stress due to the bending stress when receiving the weight of the bottom concrete and the concrete filled in the web during construction. In this process, the left and right webs 6 (left and right vertical plates) and the upper flange are prevented from buckling or changing the gap between the openings, and in the process of installing the deck, ). The main function of the upper type shear connector is to prevent the TSC IV beam and the upper slab (8) from receiving a load and causing a bending moment to slip on each other, thereby functioning as a shear connection member to form a steel composite joint.

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Cold molding is a product that can be ordered uniformly for each project and more than any amount. Therefore, if the cross-sectional shape of beam can be applied to columns, it is advantageous to produce more efficiently. This TSC Ⅳ beam (4) has a quadrangular cross-sectional shape, so that when the two are facing each other, the most preferred quadrilateral cross-section can be obtained.

Unlike the TSC Ⅱ beam (2), the top flange is not protruded to the outside but hidden inside. It is easy to be joined with the column of narrow standard (minimum width 27cm) and the torsional effect of the beam due to eccentric floor load is reduced during the installation. Since the flange 5 is embedded in the concrete slab 8, the amount of refractory covering is reduced as in the case of the TSC III beam 3 (FIG. 8).

1 is a cross-sectional view of a TSC I beam,

2 is a cross-sectional view of a TSC II beam,

3 is a cross-sectional view of a TSC III beam,

4 is a cross-sectional view of a TSC IV beam,

FIG. 5 shows the types of TSC beams currently being produced,

Figure 6 shows the shape of the preferred column cross-

7 is a perspective view of a steel concrete composite beam using a TSC IV beam,

Fig. 8 shows the amount of refractory covering depending on the type of the TSC beam.

<Brief Description of Symbols and Terms of the Drawings>

1: TSC I beam 2: TSC II beam

3: TSCII beam 4: TSCII beam

5: upper flange 6: a-shaped projection

6a: Y-shaped projection 7:

8: Slab 9: Lower flange

10: web

Claims (2)

A top open flange 5, a bottom flange 9, and a web 10 having a U-shaped cross section and an upper open end face formed by symmetrically combining two end faces; The upper open end face is configured as a space in which the upper flange is narrower than the lower flange and the concrete can be filled when the slab (8) is poured through the open space; Like projections 6a are formed on the lower flange end portions so as to abut each other to form Y-shaped projections 6a, and the projections 6a are integrally formed by welding at the outer side of the lower flange 9 of the Y- The TSC is folded into. 2. The method according to claim 1, characterized in that the upper flange (5) is welded at constant intervals with a C-shaped shear connector (7) for acting as a unit with the concrete slab.