KR101119050B1 - structure for filling-up a steel reinforced concrete on H shaped section steel in slab bridge - Google Patents

Abstract

The present invention relates to a H-shaped steel buried structure capable of reinforcing bar with fewer fasteners in order to strengthen the strength of H-shaped steel and concrete. The H-beam buried structure according to the present invention combines a pair of support bars intersected at right angles with a pair of circular support bars inserted into two fasteners spaced at regular intervals in order to reinforce the bars to H-beams using a clamp. Afterwards, one or more of the main steel bars parallel to the supporting steel bars and intersected at right angles to the supporting steel bars are knotted and fixed to the supporting steel bars by thin wires, and then concrete is formed into the formwork after forming the formwork. . According to this structure, the bending stress strength is always increased, the tensile force is increased, the work process efficiency is improved, the work process time is saved, and the labor cost can be reduced.

Guard, H-beam, Reinforced Concrete Separator

Description

Structure for filling-up a steel reinforced concrete on H shaped section steel in slab bridge}

The present invention relates to a H-shaped steel buried structure, and more particularly to a H-shaped steel buried structure capable of reinforcing bar with fewer fasteners in order to strengthen the strength of the H-shaped steel and concrete.

In general, railway bridges are high-level structures made by laying railroad tracks so that trains can pass through rivers, lakes, straits or other traffic routes or structures.

The upper types currently applied to the improvement of aging railway bridges include H-shaped steel reclaimed slab bridges, steel reinforced concrete (SRC) bridge bridges, and steel composite bridges using general steel composite plate girders. Short, large fixed load and excellent dynamic performance, but it requires lower reinforcement due to the increase of upper self weight, slab curing period, crane work is impossible, and the rebar reinforcement is excessively required.

Slab bridge is broadly referred to as flat, and is also called floor slab or top plate. In the general reinforced concrete structure, the surroundings are surrounded by beams, and the load applied to the slab is shared by the surrounding beams and the force flows to each column. In normal structures with spans of 4 to 5 m, the floor thickness is about 15 cm. Reinforced concrete slabs, called flat slabs, are placed directly on columns without support by beams, which are specially arranged so that the bending strength of the floor is maintained to a safe degree.

H-beam buried slab bridge has excellent load capacity, large fixed load, and excellent dynamic performance, but it needs lower reinforcement due to the increase of upper weight, slab curing period and beam manufacturing period, and the lack of construction ability. There is a fear that the quality of the in-hab slab construction surface is deteriorated, and the rebar reinforcement is difficult.

SRC haro bridge is concrete which is embedded in cross beam and mold inside of haro bridge.It is low in shape but short in application area, weak in load capacity, small fixed load, and lower reinforcement is smaller than H-beam buried sleeve bridge and slab bridge. Period and beam manufacturing period are required, and the rigidity is small, the vibration and deflection are large, and the thickness of the bottom plate is thin.

Therefore, the rebar reinforcement has been solved in a number of ways to solve the difficulties. One conventional structure among them is shown in FIG.

1 is a view showing a conventional H-beam buried structure, (a) is a perspective view and (b) is a sectional view.

As can be seen in Figure 1, the conventional H-beam buried structure is a main reinforcing bar into each of the machined fixtures after processing a number of fasteners (not reference number) on the wall surface of the grooves of the H-shaped steel 10 upper and lower Insert (20). Then, a plurality of auxiliary rebars 40 are put into the main reinforcing bar 20 and the main rebar 20 is pulled to overlap one end of the main reinforcing bar 20 and the other end of the main reinforcing bar 20 and the plurality of auxiliary reinforcing bars 40 are H type. One end of the main reinforcing bar 20 and the other end of the main reinforcing bar 20 to be tightly bound with a thin wire 70 to be in close contact with the steel 10 is fixed to the H-shaped steel (10).

In the state in which the auxiliary reinforcing bar 40 is in close contact with the H-shaped steel 10, after forming the formwork, the concrete 60 is poured into the formwork as shown in FIG.

However, in the conventional H-beam buried structure as described above, in the reinforcement of the reinforcement, the work to close the auxiliary reinforcing bar 40 to the H-shaped steel 10 had to be manually operated by human force, so the work efficiency is lowered, and a lot of manpower This was a factor in the rise of labor costs. In addition, since a number of fasteners are machined on the groove walls of the H-shaped steel 10, the lower and lower grooves have a significant effect on the bending stress of the H-shaped steel 10, thereby acting as a major factor of cracking.

Accordingly, the present invention has been invented to solve the above-mentioned problems, and clamps one support bar that intersects at right angles with a pair of circular support bars inserted into two fasteners among one or more fasteners spaced at regular intervals. After each form is fixed to the supporting rods, the concrete can be cast into the form after forming the form by fastening the supporting rods with thin wires to the one or more cast irons parallel to the supporting rods and crossing at right angles to the supporting rods. It is an object of the present invention to provide a structure having a configuration that allows it.

The H-shaped steel buried structure of the present invention has an H-shaped steel member having one or more fasteners formed on the upper and lower recessed walls along the longitudinal direction to reinforce the reinforcing bars, and each of which is inserted into the fasteners and has a locking jaw. One or more circular support bars that are inserted into the fastening jaws into a fixture formed on one groove wall and intersect at right angles to a pair of circular support bars of one or more circular support bars on the wall of one groove of the H-shaped steel At the same time, the support bars arranged in the longitudinal direction of the H-beams and the pair of circular support bars of one or more circular support bars at the other groove wall surface of the H-beams and at the same time Another supporting reinforcement arranged in the longitudinal direction of the steel, and a turnover type Among the one or more main bars and one or more main bars arranged between the pair of circular support bars and having one end perpendicular to the one support bar and at the same time parallel to the longitudinal direction of the pair of circular support bars And one or more clamps for engaging and securing one circular support bar and one support bar.

In the H-shaped steel buried structure of the present invention, the clamp has a circular inner groove so that a pair of inclined hook members and an inclined hook member for holding the outer circumferential surface of the circular support reinforcement by the inner groove are supported at right angles to the circular support bars. A receiving member for accommodating the reinforcing bars, a support bolt protruding from the upper bottom surface of the receiving member for compressing the supporting reinforcing bars, a threaded portion that penetrates the bottom surface of the receiving member and is integral with the supporting bolt, and a screw part and a pair The screw member is formed on the hollow inner surface and is composed of a screw housing unit integrated with the clamp, and a nut integrated with the screw unit to exert a pressure force as a screw head.

When the circular support reinforcement is initially inserted in the H-shaped steel buried structure of the present invention, the locking jaw formed on the circumferential surfaces of the circular support rebars is inserted into the recessed wall of the groove of the H-shaped steel and the following circular support reinforcement is inserted. By inserting the locking jaw formed on the circumferential surface of the circular support bars to hang on the right wall of the groove of the H-shaped steel, so that the locking jaw formed on the circumferential surface of the circular supporting bars alternately hangs on the groove wall of the H-shaped steel. It is characterized by.

In the H-shaped steel buried structure of the present invention, the combination of the circular support bars and the support bars and the combination of the support bars and the auxiliary bars are made of thin wires.

According to the H-shaped steel buried structure of the present invention, due to the smaller number of fasteners, the flexural stress strength is enhanced, work process efficiency and product quality are improved, and work process time can be saved, thus reducing labor costs. Exert.

Hereinafter, the configuration of the H-shaped steel buried structure of the present invention and the effect exerted according to the accompanying drawings will be described in detail.

Figure 2 is a view showing the H-shaped steel buried structure of the present invention, (a) is a perspective view, (b) is a cross-sectional view AA 'of Figure 2 (a), (c) between a pair of circular supporting bars (D) is an enlarged perspective view of part B of FIG. 2 (a), (e) is an enlarged perspective view of part C of FIG. 2 (a), and (f) is It is a perspective view which shows a clamp, (g) is an enlarged perspective view of the part D of FIG.2 (c), (h) is a figure which shows the engagement state of a pin and a stripper ring.

Reinforcing bars are reinforced to the H-shaped steel 10 for the purpose of strengthening the bending strength of the H-shaped steel 10 and the concrete joint.

Referring to Figure 2, the H-beam buried structure of the present invention includes an H-beam steel (10). Then, in order to reinforce the reinforcing bar to the H-shaped steel 10, the groove wall surface of the upper and lower h-shaped steel 10 is processed several fixtures in the longitudinal direction. Accordingly, the H-filled buried structure of the present invention has a much smaller number of fasteners than the conventional structure as shown in FIG. 1, so that cracks and ruptures due to bending stress are lessened. This makes the bending strength of the H-shaped steel much more strengthened than the conventional one.

One or more circular support bars 30 are inserted into the fixtures formed on the recessed wall surfaces of the H-shaped steel 10. Each of the circular support bars 30 has a diameter smaller than a diameter of a fixture formed on the groove wall of the H and 10 of the H-shaped steel 10 in a circular shape, and formed on the groove walls of the H and the steel 10. In the case of being inserted into the fixture, a predetermined engaging jaw 31 is formed on the circumferential surface so that only a predetermined depth is inserted.

Circular support reinforcement 30 is inserted into the fixtures formed on the groove wall surface of the upper and lower h-shaped steel (10). At this time, the engaging jaw 31 formed on the circumferential surface of the circular support reinforcing bars 30 in the groove wall surface of the H-shaped steel 10 is inserted so as to alternately take as shown in Fig. 2 (b) and 2 (c). do. In other words, when the first circular support reinforcing bar 30 is inserted, the locking jaw 31 formed on some circumferential surfaces of the circular support reinforcing bars 30 is inserted into the groove left wall surface of the H-shaped steel 10, When the second circular support reinforcing bar 30 is inserted, the locking jaw 31 formed on some circumferential surfaces of the circular support reinforcing bars 30 is inserted into the groove right wall surface of the H-shaped steel 10.

The circular support reinforcing bars 30 are inserted into the fastening jaw 31 into the fasteners formed on the groove walls of the upper and lower recesses of the H-shaped steel 10, and then the H-shaped steel member with respect to the locking jaws 31 of the circular supporting reinforcing bars 30. (10) One concave portion of the concave portions 34 'of the locking jaw 32 (FIG. 2 (g)) of the circular support reinforcing bar 30 protruding from the fixture formed on the opposite wall surface of the upper and lower grooves ( 34 ') and pins 33 on both sides of the 34') and the pins 33 are inserted into the stopper ring 34 as shown in FIG. 2 (h). The other side of the recess symmetrical to the hooking jaw 31 of the circular support reinforcement (30) is to be formed.

On the contrary, in the groove wall of the upper portion of the H-shaped steel 10, the locking jaw 31 formed on the circumferential surface of the circular support bars 30 inserted into the fixtures formed on the groove wall of the H-shaped steel 10 is mutually different from each other. The latching jaw 31 formed on the circumferential surfaces of the circular support bars 30 so as to be symmetrically opposed is continuously inserted into the groove wall of the H-shaped steel 10 alternately.

After coupling the H-shaped steel 10 and the circular supporting bars 30, a pair of the circular supporting bars 30 of the one or more circular supporting bars 30 at one groove wall of the H-steel 10. At one pair of circular support bars 30 so that one support bar 41 intersects at right angles to the pair of circular support bars 30 using a clamp 50. One support reinforcement 41 is fixed to one end of the circular support reinforcement 30 in which the predetermined locking step 31 is formed.

In the H-shaped steel buried structure of the present invention, as shown in FIG. 2 (f), the clamp 50 has a circular inner groove, and a pair of inclined hooks to grab the outer circumferential surface of the circular support rebar 30 by the inner groove. Pressing the receiving member 52 and the supporting reinforcing bar 41 and the receiving reinforcing bar 41 for receiving a right-angled intersection supporting bar 41 with respect to the circular supporting bar 30 between the members 51 and the inclined hook members 51. For this purpose, the support bolt 53 protrudes from the upper bottom surface of the receiving member 52, the threaded portion 54 penetrating the bottom surface of the receiving member 52 and integrated with the supporting reinforcing bar 41, and the threaded portion 54. The screw member is formed on the hollow inner surface and is coupled with the clamp 50, and the nut 55 which is integral with the screw portion 54 and exerts a pressure force as a screw head. It consists of.

In other words, first, the nut 55 is loosened so that the free space of the receiving member 52 of the clamp 50 is sufficient, and the supporting reinforcing bar 41 is seated on the receiving member 52 of the clamp 50, and then the clamp ( Insert the upper outer circumferential surface of the circular support reinforcement 30 into the inner groove of the pair of inclined hook members 51 of 50, and after insertion, the nut 55 is inserted into the threaded portion 54 of the clamp 50 and the nut 55 Rotate). As the nut 55 rotates, the threaded portion 54 rises along the threaded member of the threaded housing 56, and the support bolt 53 is raised by the rise of the threaded portion 54, resulting in the support bolt 53. Pressing the support bar 41 and applying more force to the nut 55 to rotate the support bar 41 raises the circular support bar 30, which is placed at a right angle intersection thereon, and the circular beam 30 is clamped. It comes in close contact with the inner groove of the pair of inclined hook members 51 of 50. Then, the circular support reinforcing bar 30 and the support reinforcing bar 41 are firmly adhered to each other by the clamp 50 to be coupled to each other.

Subsequently, after the pair of circular support bars 30 and the support bars 41 are tightly fixed by using the clamp 50, the one end of each of the one or more cast bars 20 is used by the thin wire 70. ) And the supporting reinforcing bar 41 is knotted and tied to each other to fix the main reinforcing bar 20 to the supporting reinforcing bar 41. At this time, the one or more cast bars 20 are in a turnover type, and one end of the cast bar 20 of the turnover type crosses at a right angle with respect to one support bar 41 and at the same time a pair of circular support bars It is arranged to be parallel to the longitudinal direction of the (30).

In this way one or more cast bars 20 are arranged to be knotted and secured to the support bars 41 by a wire 70 that is continuously thin in the longitudinal direction of the H-shaped steel 10. The number of cast irons 20 that are knotted between the pair of support bars 41 by the thin wire 70 between the pair of circular support bars 30 and fixed to the circular support bars 30 is shown in FIG. c) five as shown in the figure.

When the reinforcement of the reinforcing bar 20 of the main reinforcing bar 20, the circular supporting bar 30, the auxiliary reinforcing bar 40 and the supporting bar 41 is completed to the H-shaped steel 10 on the groove wall of the H-shaped steel 10 The main reinforcing bar 20, the auxiliary reinforcing bar 40 and the supporting reinforcing bar 41 are reinforced on the other recess wall surface of the H-shaped steel 10 in the manner described above. In other words, the other end of the pair of circular support bars 30 is fixedly coupled to the other ends of the pair of circular support bars 30 by using the clamp 50, and then the wires to the other end of the turn-over cast iron 20. Using 70 to be knotted to the other one of the supporting reinforcing bars (41) to be fixed. In addition, the other end of each of the turnover type cast rebars 20 crosses at right angles with respect to one support reinforcing bar 41 while being arranged to be parallel to the longitudinal direction of the pair of circular support reinforcing bars 30. The wire 70 is knotted and tied to the supporting reinforcing bar 41 and is fixed.

The main reinforcing bars 20 in the longitudinal direction of the H-shaped steel 10 after fixing and coupling a plurality of turn-over cast steel bars 20 to the H-shaped steel 10 on both upper and lower groove walls of the H-shaped steel 10. Inserting several auxiliary reinforcing bars (40) into the field and then knotting one or more auxiliary reinforcing bars (40) using a wire (70) to one or more turnover type main reinforcing bars (20) to tie the auxiliary reinforcing bars (40) Fixing to the cast steel (20).

In particular, the plurality of auxiliary reinforcing bars 40 are continuously arranged in the longitudinal direction of the H-shaped steel 10 in the height direction of the H-shaped steel 10 as shown in FIG. In other words, the support arranged up and down by thin wires 70 intersecting the supporting bars 41 arranged up and down and several auxiliary bars 40 extending in the longitudinal direction of the H-shaped steel 10. It is knotted and fixed at every intersection with the plurality of auxiliary rebars 40 extending in the longitudinal direction of the reinforcing bars 41 and the H-shaped steel 10.

When the reinforcement of the main reinforcing bar 20 and the auxiliary reinforcing bar 40 is completed in the H-shaped steel 10, the concrete as shown in FIG. 2 (b) is formed in a form formed after forming a form around the H-shaped steel 10. Pour it.

1 is a view showing a conventional H-beam buried structure, (a) is a perspective view and (b) is a sectional view.

Figure 2 is a view showing the H-shaped steel buried structure of the present invention, (a) is a perspective view, (b) is a cross-sectional view AA 'of Figure 2 (a), (c) between a pair of circular supporting bars (D) is an enlarged perspective view of part B of FIG. 2 (a), (e) is an enlarged perspective view of part C of FIG. 2 (a), and (f) is It is a perspective view which shows a clamp, (g) is an enlarged perspective view of the part D of FIG.2 (c), (h) is a figure which shows the engagement state of a pin and a stripper ring.

≪ Brief Description of Drawings &

 10: H shaped steel 20: cast steel

 30: circular support reinforcement 31: locking jaw

 40: auxiliary reinforcing bar 41: support reinforcing bar

 50: clamp 51: inclined ribs member

 52; Receiving member 53: support bolt

 54: threaded portion 55: nut

 56: threaded housing

Claims (4)

H-shaped steel 10 having one or more fasteners formed on the upper and lower recessed walls along the longitudinal direction to reinforce the reinforcing bars, One or more circular support reinforcing bars 30 respectively inserted into the fixtures and having a locking jaw 31 to be inserted to the locking jaw 31 into the fixture formed on one recess wall of the H-shaped steel 10; One arranged at the same time in the longitudinal direction of the H-shaped steel 10 while crossing at right angles to a pair of the circular supporting reinforcing bars 30 of the circular supporting reinforcement 30 in the groove wall of the H-shaped steel 10 Support bars (41), On the other groove wall surface of the H-shaped steel 10 is arranged perpendicularly to the pair of the circular supporting reinforcing bars 30 of the circular supporting reinforcement 30 and at the same time arranged in the longitudinal direction of the H-shaped steel 10 The other supporting reinforcing bar 41, It is of turnover type and is arranged so that one end of the pair of circular support bars 30 crosses at right angles to one support bar 41 while being parallel to the longitudinal direction of the pair of circular support bars 30 at the same time. One or more cast iron bars 20, An H-shaped steel buried structure comprising one or more clamps (50) for coupling and fixing one circular support bar (30) and one support bar (41) among the circular support bars (30). The method of claim 1, The clamp 50 has a circular inner groove so that the pair of inclined hook members 51 and the inclined hook members 51 for grabbing the outer circumferential surface of the circular support rebar 30 by the inner grooves. Receiving member 52 for accommodating right angle intersection support reinforcement 41 with respect to 30, and support bolt 53 protruding from the upper bottom surface of receiving member 52 for crimping support reinforcement 41. And a threaded portion 54 which penetrates the bottom surface of the receiving member 52 and is integral with the support bolt 53, and a threaded member that is paired with the threaded portion 54 is formed on the hollow inner surface, and the clamp 50 and An H-shaped steel buried structure comprising an integrally threaded housing 56 and a nut 55 that is integral with the threaded portion 54 and exerts a pressure force as a threaded head. The method of claim 1, When the circular support reinforcing bar 30 is initially inserted, the locking jaw 31 formed on the circumferential surfaces of the circular support reinforcing bars 30 is inserted into the groove left wall of the H-shaped steel 10 and the next circular supporting reinforcing bar is When inserting the 30, the engaging jaw 31 formed on the circumferential surfaces of the circular support bars 30 is inserted into the groove right wall surface of the H-shaped steel 10 so that the circumferential surfaces of the circular support bars 30 are inserted. H-shaped steel filling structure, characterized in that the engaging jaw 31 is formed to alternately hang on the groove wall surface of the H-shaped steel (10). The method of claim 1, H-shaped steel buried structure, characterized in that the coupling of the supporting bars (30) and the support bars (41) and the coupling of the support bars (41) and the auxiliary bars (40) made of a thin wire (70).

Images