KR20190055367A - Hybrid Beam System for Underground Parking Using Post Tension - Google Patents

Abstract

According to one aspect of the present invention, a hybrid beam system for an underground parking lot using post tension includes: a pillar having an extension part integrally extended on a side surface of an upper portion; at least one steel beam having a plate board at an end portion coupled to one side surface of the extension part; and a tension hardware connecting the plate boards coupled to the extension parts facing each other to each other to generate tension force to the pillar.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a hybrid system for an underground parking lot utilizing a post tension,

The present invention relates to a hybrid beam system for an underground parking lot utilizing post tension, and more particularly, to a hybrid beam system using a post tension, The present invention relates to a hybrid beam system for an underground parking lot utilizing a post tension that can be joined to a vehicle.

In the conventional architectural structure, a single structure using a material such as a column and a beam, such as a reinforced concrete structure, a steel structure or a steel-reinforced concrete structure, is generally used, and this single structure forms each of the specialized fields . The double reinforced concrete structure is structurally or economically most commonly used to reinforce reinforcing bars with strong tensile force to concrete that is strong to compressive force but very weak to tensile strength. This reinforced concrete structure has many advantages Nevertheless, since the section and weight of the member are large, and concrete must be poured and cured in accordance with the progress of the construction, the construction period is much consumed, and uniform construction is difficult and thorough management is required.

In addition, since the steel structure is made of a steel material excellent in strength and ductility as compared with reinforced concrete, it can absorb a large amount of strain energy caused by an earthquake, wind, impact, etc., and is advantageous for high- On the other hand, the member is easily buckled with respect to the compressive force, and the strength and deformation are liable to occur due to the high temperature at the time of welding, which is liable to be rusted by moisture. However, in recent years, the size of a building has been increased in size and has been made into a superstructure. In the case of a single structure having the above-described structure, the structure is unsuitable for the needs of a building, It was also disadvantageous in terms of quality.

For this reason, researches are being actively conducted on a new composite structure that merely takes advantages in each structural system in order to improve the structural performance and shorten the air shortage and labor costs.

In such a composite structure, the column member is used as an economical and efficient reinforced concrete to receive a compressive force due to a large compressive force, and a steel member is advantageous in that the member is less durable than a reinforced concrete member in view length and weight do.

It is very important to design a composite structure in which a reinforced concrete column and a steel beam meet in a composite structure using reinforced concrete columns and steel beams. Reinforced concrete and steel are materials whose material properties are different from each other. The part where the two members are joined is an important part that transmits the stress acting on the structure, which is an important part affecting the safety of the entire structural system. Therefore, design proposals for composite structures of reinforced concrete columns and steel beams have been presented through many studies.

Generally, in the conventional connection of the reinforced concrete column and the composite structure of the steel frame installed in the underground parking lot, a cross-shaped steel beam is installed on the reinforced concrete column, a main pole of the column is arranged on the four corners of the reinforced concrete column, A method of laying a hole in the web and restraining the main body of the column was used.

However, in this method, the precise hole position is set in the web of the steel beam, the hole is pierced, and the shear reinforcement of the column is inserted into the hole. However, the work is difficult and complicated to carry out on the construction site.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a reinforced concrete pillar, which is two different members installed in an underground parking lot utilizing post tension, The present invention is to provide a hybrid beam system for an underground parking lot utilizing post tension.

In order to accomplish the above object, according to one aspect of the present invention, there is provided a hybrid beam system for an underground parking lot utilizing a post tension, comprising: a column having an extension extending integrally from an upper side; At least one steel beam having a plate plate at an end thereof and a tension plate for connecting the plate plates coupled to the extending portions facing each other to each other to generate tension on the column.

The column extends from at least one side of the upper portion of the body and is coupled to an end of the steel beam. The column extends from the body and the extending portion, And a concrete pouring into the body and the extension part after the steel beam is coupled to the end of the extension part.

The extending portion may further include an engaging reinforcing bar fixed through the end portion of the column and the steel frame to connect the column and the steel frame to each other.

Wherein the tension steel has a fixing tube connected to both end portions of the steel frame and formed to penetrate the column, a fixing steel pipe penetrating the inside of the fixing tube and improving the strength of the column by a tension force, And a fixing device for fixing the fixing hardware which is provided in each of the fixing devices.

The fixing device may include a tension device coupled to both ends of the fixing hardware to generate a tension force by pulling the fixing hardware and a fixing device for fixing the fixing hardware in which the tension device is generated by the tension device.

According to the hybrid beam system for an underground parking lot utilizing the post tension according to the present invention, when a reinforcing concrete column, which is two different members, is combined with a steel beam, It can be installed.

And, since the post tension is applied to the column, the compressive stress of the concrete is formed because the tension is applied, and the column is formed more firmly.

1 is a sectional view showing a hybrid beam system for an underground parking lot utilizing post tension according to an embodiment of the present invention;
2 is a side sectional view showing a state where a column and a steel beam are joined according to an embodiment of the present invention;
3 is a side cross-sectional view showing a state in which a column and a steel frame are joined by tightening a tension steel according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view illustrating a state in which a tension metal is fixed according to an embodiment of the present invention. FIG.
Fig. 5 is a perspective view showing a state where the tension metal shown in Fig. 4 is fixed. Fig.
6 is a flowchart showing a method of joining a hybrid beam system for an underground parking lot utilizing post tension according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a hybrid beam system for an underground parking lot utilizing a post tension according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side sectional view showing a hybrid beam system for an underground parking lot utilizing a post tension according to an embodiment of the present invention. FIG. 2 is a side sectional view showing a state where a column and a steel frame are joined according to an embodiment of the present invention. And FIG. 3 is a cross-sectional side view showing a state in which a column and a steel frame are joined by straining a tension steel according to an embodiment of the present invention.

1 to 3, the hybrid beam system for an underground parking lot utilizing post tension according to an embodiment of the present invention includes a column 100 and a steel beam 200 formed of reinforcing concrete, which are two different members The tension metal piece 500 is inserted using a post tension so as to be more firmly and conveniently joined.

The joining system for joining the column 100 formed of reinforcing concrete, which is two different members, with the steel beam 200 comprises a column 100 having an extension 120 integrally extending from the upper side, At least one steel frame beam 200 having a plate plate 210 at an end coupled to one side of the plate 120 and the plate plate 210 coupled to the extending portion 120 facing each other are connected to each other (500) for generating tension on the column (100).

The column 100 includes a body 110 extending from the ground, an extension 120 extending from at least one side of the upper portion of the body 110 and coupled with an end of the steel beam 200, A reinforcing bar 130 provided inside the body 110 and the extension 120 to reinforce the strength of the column 100 and a reinforcing bar 130 attached to the end of the extension 120 to connect the steel bar 200 And a concrete 140 pushed into the body 110 and the extension 120 after it is formed.

The reinforcing bars 130 and the concrete 140 are integrally formed with the external force against the external force of the reinforcing bars 130 and the reinforcing bars 130, . The body 110 is the same as the reinforced concrete column 100 which is used in a general construction site and can be installed in the field or can be pre-manufactured in the factory.

The reinforcing bars 130 may be repeatedly installed at regular intervals with a plurality of vertical main bars in a vertical direction and a front-end reinforcing bars 130 horizontally surrounding a vertical main bar within the body 110.

The extension part 120 may be formed to have a predetermined length on the upper side of the body 110. The extension part 120 may be formed to extend from four opposite side faces depending on the position in the building, May be formed to extend from two side surfaces at an angle of 90 degrees, or may be formed to extend from three side surfaces such as a T-shape.

In addition, a plurality of horizontal main windings and a plurality of shear reinforcing bars 130 vertically surrounding the horizontal main windings may be repeatedly installed at predetermined intervals within the extension part 120.

The extension part 120 may further include a coupling reinforcing bar 130 fixed to the column 100 and the end of the steel beam 200 to connect the column 100 and the steel beam 200 to each other .

The coupling steel bar 130 may be omitted for connecting the column 100 and the steel bar 200 in order to use the tension steel 500.

The coupling bars 130 may connect the steel beams 200 facing each other with the pillars 100 interposed therebetween to ensure the integrity with the pillars 100. In order for the coupling steel bar 130 to be connected to the steel bar 200, the coupling steel bar 130 and the tension bar 500 are inserted into the plate plate 210 provided at the end of the steel bar 200, At least one through hole 211 may be provided.

The combined reinforcing bar 130 may be formed of a reinforcing bar 130 having the same or larger diameter than the reinforcing bars 130 used for the column 100. Both ends of the reinforcing bar 130 may be formed of a non- (Not shown) may be spirally coupled.

The coupling bars 130 may be formed to have a predetermined length to penetrate the plate 100 and the plates 210 coupled to both ends of the extension 120 at the same time.

The fixed iron piece 400 includes the column 100 and penetrates through the coupling steel bars 130 facing each other to join the column 100 and the steel steel bar 200 to each other. And a fixing nut threadedly engaged with the spiral groove formed at the end of the coupling bar 130 protruding from the other side of the column 100 through the through-

The fixing nut may be formed of a high-tension nut so as not to be detached after being coupled to the coupling reinforcement 130, and may be finished by welding or the like after being coupled.

The fixing nut may be provided on both sides of the coupling bar 130 passing through the steel bar 200. At this time, each of the fixing nuts is fastened to the coupling bar 130 passing through the steel bar 200 provided on both sides of the column 100, and the ends of the steel bar 200 are fixed .

In order to fix the coupling reinforcement 130, the coupling reinforcement 130 may be replaced with a coupler that is coupled to the outside of the plate 210 in place of the fixed hardware 400, have.

The steel plate 200 may be provided with plate plates 210 at both ends thereof and the plate plate 210 may be welded to the steel plate 200 and fastened with high tension bolts.

The steel frame 200 may be disposed between the extended portions 120 of the adjacent columns 100. The steel frame 200 may be disposed on the side of the adjacent columns 100, (100) are connected in a shape of a +, a, and a, and generally an H-shaped steel can be used.

Generally, the upper and lower portions of the steel frame 200 are defined as flanges, and the portions connecting the upper and lower flanges are defined as wafers. As in the case of the column 100, the steel frame 200 may be manufactured through welding or the like in a required form at a work site, or may be manufactured in a factory in advance in a form necessary for a work site.

In addition, since the steel beam 200 is not disposed to penetrate the inside of the column 100, interference between the vertical main beam inside the body 110 and the steel beam 200 does not occur. Accordingly, it is also possible to uniformly distribute the vertical main beam over the entire surface without concentrating on the four corners of the column 100 as in the prior art.

When the steel bar 200 and the column 100 are joined by the coupling steel bar 130 as described above, the reinforcing bar 130 is inserted into the extending portion 120 and the body 110 and the extending portion 120 The concrete 140 may be installed in the reinforcing bar 130 so that the reinforcing bars 130 together with the reinforcing bar 130 may have a binding force by the concrete 140.

At this time, the steel frame 200 may be provided with a slab 700 on the upper portion thereof, and the reinforcing bars 130 may be disposed on the slab 700 when the reinforcing bars 130 are inserted into the extending portion 120 .

The tension steel 500 includes a fixing tube 510 connected to both end portions of the steel beam 200 and formed to penetrate the column 100 and a fixing tube 510 penetrating the fixing tube 510, A fixing device 511 for improving the strength of the column 100 and a fixing device 600 for fixing the fixing hardware 511 provided at both ends of the fixing pipe 510 have.

The fixing pipe 510 may be a sheath for inserting the fixture 511 before filling the concrete 140 with the column 100. [ The fixing pipe 510 is installed in the process of placing the reinforcing bars 130 when the pillars 100 are manufactured. In the process of installing the concrete 140, the fixing pipe 510 is partially damaged due to the insertion pressure of the concrete 140 or the impact of the vibrator. Or a predetermined strength is maintained so that a defect does not occur in the joint portion.

Both ends of the fixing tube 510 may be coupled to the plate plate 210 of the steel frame 200 coupled to the end of the column 100. The fixing plates 510 may be connected to both ends of the fixing plate 510, And may be coupled to the through hole 211 provided in the base 210 to be opened.

In addition, the fixing tube 510 may be elastically deformed to be fluidly variable by the tension of the fixation hardware 511 accommodated therein. In this case, the fixing tube 510 may be formed of a material in which a plurality of pipes are connected to each other or a material having fluidity in order to be flexible.

The fixing tube 510 may have a rigid structure to prevent the concrete 140 from being introduced into the fixing tube 510.

The fixture 511 may be formed of a steel wire that flows into the fixing tube 510, and a plurality of steel wires may be twisted and arranged at equal intervals or may be formed of a steel bar having a large diameter.

The fixing steel piece 511 may be cured by pouring the concrete 140 before or after the concrete 140 is installed in the column 100 and may be fixed through the fixing pipe 510 have.

The fixing metal piece 511 may be fluidly changed when a tension force is applied by the fixing device 600. The fixing metal piece 511 may penetrate the plate plate 210 of the steel beam 200 provided at both ends of the column 100 . At this time, the fixing hardware 511 may be fixed by the fixing device 600 after passing through the steel beam 200, or may be subjected to a tensile force after the concrete 140 is cured.

4 to 5, the fixing device 600 includes a tension device 610 coupled to both ends of the fixing hardware 511 and pulling the fixing hardware 511 to generate a tension force, And a fixing device 620 that fixes the fixing hardware 511 in which the tension force is generated by the fixing device 610.

The tension device 610 is installed at one end of the fixing hardware 511 in order to apply a tensile force to the fixing hardware 511 when the concrete 140 is cured after piling the column 100 having the fixing tube 510, As shown in FIG.

The tension device 610 is formed to penetrate the fixing hardware 511 to pull the fixing hardware 511 and apply a tensile force to the column 100 so that a compressive stress is generated in the concrete 140 It is possible to reduce the creep in which the plastic deformation occurs in the member receiving the load for a long time.

The tension device 610 may be formed of various tension devices 610 by applying tension to the concrete 140 by pulling the fixing hardware 511 by hydraulic pressure or a motor.

The fixing device 620 may fix the fixing hardware 511 at both ends so that the tension force is not released when the fixing hardware 511 is tensed by the tension device 610.

The fixing device 620 is coupled to the tension nut 621 to fix the tension nut 621 fixed to the plate plate 210 and the fixing hardware 511 passing through the tension nut 621 And may include a fixture 622.

The tension nut 621 is fixed to the plate 210 and the center is formed at the same position as the through hole 211 and is opened so that the fixing hardware 511 can pass through. The tension nut 621 may be formed in a conical shape to be coupled with the fixing body 622.

The fixing body 622 may be formed in a shape such that its outer circumferential surface surrounds the tension nut 621 and may be spirally coupled to the tension nut 621. The inner circumferential surface of the fixing body 622 may be conically shaped to protrude toward the tension nut 621 And can be received within the tension nut 621.

The fixing body 622 is formed so that its center is opened so as to pass through the fixing hardware 511 like the tension nut 621 and the inner circumferential surface of the conical shape is coupled with the tension nut 621, Can be more firmly fixed.

When the fixing metal piece 511 is tensioned, the fixing metal piece 511 can be filled with grout so that the fixing force is maintained in a fixed state.

The slab 700 is poured as a concrete 140 on the column 100 and the steel frame 200 and can mainly form a bottom surface of the building and the concrete 140 placed on the slab 700 And is lower in strength than the concrete 140 placed in the column 100. In order to economically construct the entire building structure, the column 100, which is a vertical member, is first laid with a high strength concrete 140 in a range of about 27 MPa to 50 MPa, and then the slab 700, which is a horizontal member, It can be installed with low strength concrete (140) in the range of 36 MPa. The strength ratio of the concrete 140 placed in the body 110 and the concrete 140 placed in the slab 700 can be set within a range of about 1.2 to 1.4 times.

6 is a flowchart illustrating a method of joining a hybrid beam system for an underground parking lot utilizing post tension according to an embodiment of the present invention.

6, in order to join the hybrid beam system for an underground parking lot utilizing the post tension according to an embodiment of the present invention, a reinforcing bar 130 forming the body 110 of the column 100 may be fitted And a mold 900 for placing the concrete 140 in the reinforcing bar 130 may be installed.

In order to form an extension 120 protruding from the upper side of the column 100, a mold 900 is installed horizontally at the top of the mold 900 and a mold 900 is installed to fix the mold 900. [ And the bottom 800 can be installed at the bottom.

The mold 900 may be installed up to a position where the extension 120 is in contact with the steel frame 200 and may be installed up to the side of the extension 120 to form the extension 120 .

A steel beam 200 may be disposed at an end of the form 900 to allow the steel beam 200 to be joined to an end of the extending portion 120.

When the steel frame 200 is joined, a slab 700 mold 900 may be provided between a plurality of steel frame beams 200 forming a bottom.

The reinforcing bar 130 and the fixing pipe 510 may be installed to penetrate the plate 210 of the steel frame 200 installed to face each other with the column 100 interposed therebetween.

At this time, the coupling bars 130 may be coupled through the through holes 211 formed in the plate 210.

The fixing steel piece 400 may be installed at the end of the coupling steel bar 130 passing through the plate plate 210 to fix the coupling steel bar 130.

After fixing fixture 511 passes through fixing pipe 510, both end portions of fixing fixture 511 can be fixed through plate plate 210.

The reinforcing bar 130 may be attached to the extension 120 by bonding the steel bars 200 to the pillars 100 after the coupling bars 130 and the fixing steel bars 511 are disposed.

At this time, a reinforcing bar 130 forming a floor may be placed on the slab 700 at the same time as the extension portion 120.

The concrete 140 can be installed in the extension part 120 and the body 110 and the concrete 140 having a strength lower than that of the column 100 can be installed in the slab 700. [

When the concrete 140 is cured, the fixing steel 511 may be tensed through the fixing device 600 and then fixed to form a compressive stress in the concrete 140.

While the present invention has been described with respect to a hybrid beam system for an underground parking lot utilizing post tension according to an embodiment of the present invention, the spirit of the present invention is not limited to the embodiments disclosed herein. Those skilled in the art, who understands the spirit of the present invention, can readily suggest other embodiments by adding, changing, deleting, adding, or the like of components within the scope of the same idea, I would say.

100: column 110: body
120: extension part 130: reinforcing bar
140: concrete 200: steel frame
210: plate plate 300:
400: Fixed hardware 500: Tension hardware
510: Fixing tube 511: Fixing hardware
600: fixing device 610: tension device
620: Fixing device

Claims (5)

A column having an extension extending integrally from the upper side,
At least one steel beam having a plate at an end coupled to one side of the extension,
And a strain gauge for generating a tension force on the column by connecting the plate plates coupled to the extending portions facing each other. The hybrid beam system for a underground parking lot utilizing the post tension
The method according to claim 1,
The column includes a body extending from the ground,
The extension extending from at least one side of the upper portion of the body and coupled with an end of the steel beam,
A reinforcing bar provided inside the body and the extension to reinforce the strength of the column,
And a concrete installed in the body and the extension part after the steel beam is coupled to the end of the extension part. The hybrid beam system for underground parking system utilizing the post tension
The method according to claim 1,
Wherein the extension part further comprises a coupling reinforcing bar fixed through the end of the column and the steel beam to connect the column and the steel beam to each other.
The method according to claim 1,
Wherein the tension steel has a fixing tube connected to both ends of the steel beam and formed to penetrate the column,
A fixing steel pipe formed through the inside of the fixing pipe to improve the strength of the column by a tension force,
And a fixing device provided at both ends of the fixing tube for fixing the fixing steel material having a tensile force generated therefrom.
5. The method of claim 4,
The fixing device includes a tension device coupled to both ends of the fixing hardware and pulling the fixing hardware to generate a tension force,
And a fixing device for fixing the fixing hardware in which a tension force is generated by the tension device. The hybrid beam system for an underground parking lot utilizing a post tension

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