KR20100121864A - Joint structure of pc beam for use in construction of building using prc integrating method - Google Patents

Abstract

PURPOSE: A consecutive joint structure of a PC beam used for a construction structure using a PRC integrating method is provided to effectively transfer and distribute a load and to reduce the amount of required materials. CONSTITUTION: A consecutive joint structure of a PC beam used for a construction structure using a PRC integrating method is as follows. A central joint part and a top joint part are formed in a PC column. PC beams(20) are placed in the central and top joint parts and are coupled to each other using coupling steel bars(70). Coupling grooves(21) are formed in the ends of the PC beams. Mounting grooves(22) are formed in the coupling grooves toward the outer end. The coupling steel bars are inserted into the mounting grooves.

Description

Joint structure of PC beam for use in construction of building using PRC integrating method}

According to the present invention, after the pillars, beams, and slabs of a building structure, such as an underground parking lot, are manufactured by the PC method, the PC pillars moved to the site are installed on the foundation floor, and the PC pillars are installed on the PC floor. Binding and installation of the beam, and the construction by the PRC compounding method that is constructed by topping concrete (PC Slab) in the state of binding the PC slab (PC Slab) is installed In the structure, by improving the binding structure of the PC beams connected to both sides of the PC columns, it is possible to secure the safety when placing the coated concrete and realize the continuity between the PC beams, while improving the reinforcing reinforcement and fixing effect of the joints. It is about the binding structure of PC beam that can improve the construction quality of the structure.

In general, the PC method for constructing a large-space building, such as a large store or a factory, which requires a long span, is combined with a double tee slab, a hollow core slab, or HCS. There is a Precast Reinforced Concrete Layer Construction Method, and the PrC method using Half PC Slab is applied to a medium-sized building with heavy loads such as an underground parking lot.

The PRC compounding method is a method of converting reinforced concrete ramen (PC) into a precast concrete (PC), and the PC members such as PC columns, PC beams, and half slabs manufactured at the factory are transported to the site and doubled. In the assembled state, it is a method of integrating the structure by pouring concrete on the joint between the members and the upper surface of the half slab in the field.

In addition, various construction methods that increase the span between the pillars and the pillars in the near-industry to induce safe parking and secure the radius of rotation of the vehicle at the same time, while reducing the cost of construction by reducing the required amount of PC pillars and PC beams This is the trend that is being proposed.

That is, according to Korean Patent No. 10-0807395, an intermediate support plate protruding integrally formed on both sides of the intermediate part of the PC concrete pillar to protrude so as to mount the beam constituting the beam of the basement layer, and a plurality of fitting bolts embedded in the intermediate support plate and protruding upwards And a plurality of through fitting holes inserted into the fitting bolts at the steps of both ends, and the inverted half beams are fitted and fixed to the fitting bolts and fixed to the intermediate support plate, and the upper portion of the PC concrete pillar. Both ends of the upper support plate is formed integrally protruding on both sides to protrude the beam constituting the beam of the roof layer, a plurality of fitting bolts embedded in the upper support plate and protruded to the top, and through-holes inserted into the fitting bolt The fitting hole is fitted to the fitting bolt and fixed to the upper mounting plate by a nut. The structure and construction of a rectangular half beam, in which the rectangular half beams are fixed, while the rectangular half beams with grooves formed at both ends and the grooves of the rectangular lower beams surround the vertical reinforcing bars exposed at a predetermined length from the center of the PC concrete column to the upper part thereof are fixed. I have suggested a method.

The structure and construction method of the basement frame structure of the underground parking lot is equipped with fixing means in the upper support plate and the roof layer beam of the PC concrete pillar to solve the safety problem, and at the same time, the basement beam and the slab are joined using the inverted half beam. To reduce the cost and secure the constructability.

However, the PC beam used in the basement frame structure as described above has a structure and method that depends on the fixing force through coupling with the fitting bolt protruding from the upper support plate and the intermediate support plate of the PC pillar, resulting in a very small cross section. It has a serious vulnerability.

That is, in the above-described PC beam, the PC beam for constructing the basement layer is placed on both ends of the PC beams adjacent to each other on the intermediate support plate of the PC pillar, but in this process, the fitting bolts of the PC pillar are fitted to the PC beam. The PC pillar and the PC beam are coupled to each other by screwing the nut into the fitting bolt exposed through the fitting hole and exposed through the fitting hole. However, in the above-described coupling method, the load of a car or the like acting on the PC slab. Since the focusing action on the coupling portion of the fitting bolt and the fitting hole has shown a serious problem in the safety of the corresponding part, and if the error occurs in the construction there is a fitting bolt is to go out without entering the fitting hole.

In order to compensate for this, there is a need to implement various additional means or to perform continuous and repetitive maintenance and repair work.

In addition, in the case of the PC beam for constituting the basement layer as described above, each of the PC beam is separated and coupled to both sides of the PC column, when a single heavy beam is transferred to the PC beam by a slab in a row arranged in series Since all of the loads are transferred, the distribution of loads hardly occurs, which also has a fatal defect in structural safety.

Although there is a serious problem with the structural safety as described above, inevitably, the above-described coupling structure was inevitably adopted. This is because of the construction method, because the above-mentioned PC pillars will have a length including both the basement layer and the roof layer, so the above-mentioned PC beams must be combined in a separate state from both sides of the PC column. As it is combined in a separate and separated state, it was inevitable to include such fatal structural safety problems.

Accordingly, the conventional PC pillar inevitably forms a wide and thick protrusion of the intermediate support plate so that the secure coupling and construction of the PC beam can be made, but another problem caused by the intermediate support plate as described above, namely, the upper part for fixing the PC beam Since the support plate and the intermediate support plate are integrally protruded from the PC pillar, they are not good in appearance. The protruding upper support plate and the intermediate support plate are space invasion to the ceiling of the structure. And there is an urgent need for improved structures and construction methods for PC beams.

The present invention has been made to solve the problems as described above, each forming a fastening groove in the end of the PC beam disposed on both sides of the PC pillar having the intermediate coupling portion and the upper coupling portion of the concrete non-molded portion, the PC from the fastening groove Forming each of the settled grooves open toward the ends of the beam, inserting a separate binding bar to connect the settling grooves of the PC beam facing each other, and screwing the fastening nut to the end of the binding bar protruding into the fastening groove By forming

Due to the effect of connecting the independent beams to each other by the binding bars, various safety accidents occurring in the construction process of the structure can be prevented in advance, and the continuity between the beams can be realized to further improve the physical safety and construction quality of the structure. It is an object of the present invention to provide a continuous binding structure of PC beams used in a building structure by the PPC composite method of the fastening reinforcing bar and the role of reinforcing bars and at the same time improve the fixing effect. will be.

The present invention for achieving the object as described above, the PC pillar to form the intermediate coupling portion and the upper coupling portion formed by the unmolded concrete, the PC seeing the mutual coupling placed on the intermediate coupling portion and the upper coupling portion It is configured to be mutually fastened by separate binding bars,

By forming the fastening groove at the end of the PC beam and respectively forming the settled grooves penetrating toward the outer end from the fastening groove, the binding reinforcing bar to the settle groove of the PC beam facing each other on the PC pillar. Inserted from the top to the bottom end of the binding reinforcing bar projecting to the inside of the fastening groove is to be configured so that the combined mutual coupling between the PC beam by screwing a separate fastening nut.

The present invention, because the solid binding and connection between the PC beam is made can prevent safety accidents or poor construction during the connection work and concrete topping process of the PC slab, so that both ends of the PC beam mounted on the PC column are bound to each other Although the binding force of the PC beam is very excellent, the integrated construction of the PC column and the PC beam is achieved, and the physical construction safety is excellent as the binding reinforcing bar plays a role of reinforcing the reinforcing bar.

In addition, as the opposite ends of neighboring PC beams are connected to each other by binding bars, integral construction of the entire structure is achieved, thereby effectively transferring and distributing loads, thereby increasing design intervals for PC columns and PC beams. It is possible to reduce the required number and to reduce the material used, which is very economical.

The terms or words used in this specification and claims are not to be construed as being limited to the common or dictionary meanings, and the inventors may appropriately define the concept of terms in order to explain their invention in the best way. Based on the principle, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of the frame of the building structure according to the present invention, Figure 2 is a perspective view of the PC beam of the present invention coupled to the PC pillar, Figure 3 is an enlarged end perspective view of the PC beam of the present invention.

As shown in the figure, the building structure according to the present invention moves a factory manufactured PC column 10, a PC beam 20, and a PC slab 30 to the site, and a fixed installation step for the PC column 10 and the PC beam ( Through the binding step of 20) and the binding step for the PC slab 30, the construction is completed through the concrete topping of the joint between the PC members and the upper surface of the PC slab 30. That is, the PC members are manufactured by the PC method, which is a factory manufacturing method, and the process of joining the PC members to each other is performed by the RC method, so that the PRC composite method is performed by these PC members. .

At this time, the PC pillar 10 is a concrete member having reinforcing bars embedded therein along a vertical longitudinal direction, and the concrete unmolded state in which the embedded bars are exposed in the middle part and the upper part of the PC pillar 10. The female intermediate coupling part 11 and the upper coupling part 12 will be provided. In addition, in the above illustration, only a single intermediate coupling part 11 is formed, but this case corresponds to a case where only a single basement layer and a roof layer are formed, and when a structure is to be constructed to have a multilayer basement layer. What is necessary is just to form the said intermediate | middle coupling part 11 further at a uniform space | interval, and the space | interval and number of these intermediate | middle coupling parts 11 will be determined according to the height and the number of floors of the structure to be constructed.

The intermediate coupling portion 11 and the upper coupling portion 12 of the PC pillar 10 is the end of the PC beam 20 for constructing the basement layer and the roof layer is connected, the above-described PC beam 20 The end of the binding is to be made to the two beams 20, the ends of which are opposed to each other with respect to the PC pillar 10 through a separate binding bar 70.

That is, in the state in which the ends of the PC beams 20 adjacent to each other on the intermediate coupling portion 11 and the upper coupling portion 12 of the PC pillar 10 are placed at the same time as shown in FIGS. 4 and 5. What is necessary is just to insert and fix the separate binding reinforcing bar 70 from the upper side through the settle groove part 22 formed in the edge part of the PC beam 20 from the upper side to the lower side.

Here, the PC beam 20 is formed with a fastening groove 21 having a concave groove at an end portion, and a settle groove portion 22 penetrating toward the end surface from the fastening groove 21 is formed. When the binding bars 70 are simultaneously inserted into the settled groove portions 22 for two PC beams 20 facing each other, the binding bars 70 have different ends. It protrudes into the fastening groove 21 of the PC beam 20.

Accordingly, when the fastening nut 71 is screwed in the state in which a separate washer plate 72 is inserted into the binding reinforcing bar 70 protruding into the fastening groove 21 as described above, they face each other as described above. The two PC beams 20 are to form a state connected to each other.

In particular, the fastening reinforcing bar 70 is easy to assemble the fastening nut 71 because the threaded portion 73 is formed at both ends, and is inserted into the fastening bar 70 to be in close contact with the inner surface of the fastening groove 21. Washer plate 72 is to be fastened to each other by the total area of the washer plate 72 while preventing the concrete-shaped PC beam 20 is damaged by the fastening nut 71 is rotationally coupled as described above. Since it serves to expand, more secure fastening and fixing can be made.

After fixing the PC slab 30 using the above-described PC beam 20 in this state, the fastening portion between the PC pillar 10 and the PC beam 20 and the bottom layer on the upper surface of the PC slab 30 are formed. When forming the overlay concrete layer 60 to form, as shown in Figure 6, the binding reinforcing bar 70 is completely embedded in the overlay concrete layer 60 while the PC beam 20 on both sides in a continuous direction It is to play the role of uniting.

In particular, the settle groove portion 22 formed in the PC beam 20 is most ideally formed to a depth corresponding to half of the total thickness of the PC beam 20, the settle groove portion 22 having the depth as described above Binding reinforcement (70) inserted into the) will have the result of connecting the center of the PC beam 20 in succession, so that the load or vibration acting in the transverse or longitudinal direction of the PC beam 20 without the most unloaded load It will be a position to stably support and unite it.

Accordingly, the binding structure of the PC beam 20, which is the separation component by the binding bar 70 as described above, serves to serve as a reinforcing bar in these coupling portions while realizing the continuous structure of the PC beam 20. It is very effective because it can maintain strong and excellent physical rigidity between structures.

In particular, the binding reinforcing bar 70 is a solid assembly is made only by the process of fastening simply by inserting downward from the upper side of the PC beam (20) facing each other is excellent in workability and excellent installation and fixing force.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the present invention as defined by the appended claims. Examples should be understood.

1 is a perspective view of a skeleton of a building structure according to the present invention

Figure 2 is a perspective view of the PC bonded to the PC pillar of the present invention

3 is an end enlarged perspective view of a PC beam of the present invention;

Figure 4 is a plan view of the PC bonded to the PC pillar of the present invention

Figure 5 is a side cross-sectional view of the PC beam coupled to the PC pillar of the present invention

Figure 6 is a cross-sectional view of the overlaid concrete construction state in the state of the PC beam coupled to the PC pillar of the present invention

Explanation of symbols on the main parts of the drawings

10: PC pillar 11: intermediate coupling portion

12: upper coupling part

20: PC Bo 21: fastening groove

22: settle groove

30: PC slab

60: overlay concrete layer

70: fastening bar 71: fastening nut

72: washer plate 73: screw portion

Claims (4)

After manufacturing the PC pillar 10, PC beam 20 and PC slab 30 from the factory and transported to the site, the joints between the PC pillar 10, the PC beam 20 and the PC slab 30 bound to each other and In the building structure by the PPC composite method comprising the step of topping the concrete over the top of the PC slab (30), The PC pillar 10 is formed with an intermediate coupling portion 11 and an upper coupling portion 12 formed by unmolding concrete, and placed on the intermediate coupling portion 11 and the upper coupling portion 12 facing each other. Being configured to be a PC beam 20 is fastened to each other by a separate binding bar 70, The PC beam 20 forms a fastening groove 21 at an end portion and forms a settled groove portion 22 penetrated toward the outer end from the fastening groove 21, respectively, so that each end is placed on the PC pillar 10. The binding reinforcing bar 70 of the PC beams 20 facing each other is inserted into the bottom of the binding reinforcing bar 70 from the top to the end of the binding reinforcing bar 70 protruding inwardly of the fastening groove 21. Continuously fastening structure of the PC beam used in the building structure by the PPC composite method, characterized in that the coupling to the separate fastening nut 71 is configured to form an integrated mutual binding between the PC beam (20). The method of claim 1, In the binding reinforcing bar 70 protruding into the fastening groove 21, the fastening nut 71 is engaged with a separate washer plate 72 inserted therein, thereby rotating the fastening nut 71. The continuous binding structure of the PC beam used for the building structure by the PPC composite method, characterized in that it is configured to prevent breakage). The method of claim 1, The binding reinforcing bar 70 is formed by forming a threaded portion 73 for screwing the fastening nut 71 at both ends thereof, and the continuous binding structure of the PC beam used in the building structure by the PPC composite method. . The method of claim 1, Settlement groove portion 22 of the PC beam 20 is used in the building structure by the composite composite PC method, characterized in that the upper portion of the open configuration of the binding reinforcing bar 70 is configured to be easily inserted from above Continuous tie structure of PC beam.

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