KR20100121863A - Joint structure of pc beam for use in construction of building using prc integrating method - Google Patents

Abstract

PURPOSE: A joint structure of a PC beam used for a construction structure using a PRC integrating method are provided to improve cost efficiency by reducing the amount of required materials. CONSTITUTION: A joint structure of a PC beam(20) used for a construction structure using a PRC integrating method is composed as follows. A central coupling unit and a top coupling unit are formed so that main steel bars(13) formed inside a PC column(10) can be exposed. The end of the PC beam placed on the top and central coupling units is coupled to the main steel bars using C-shaped coupling members(50). Insertion holes(24) are formed in the ends of the PC beam.

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, it is about the binding structure of the PC beam to improve the construction quality of the structure as well as to ensure the safety of the cast-in-place concrete by improving the binding structure of the PC beam connected to both sides of the PC pillar.

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. The upper support plate protruding integrally formed 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 upwards, and through fitting holes inserted into the fitting bolts at both ends The fitting holes are fitted to the fitting bolts and fixed with nuts to be seated on the upper support plate. 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 provided with fixing means on the upper support plate and the roof layer beam of the PC concrete pillar to solve the safety problem, and by using the inverted half beam to strongly join the basement beam and the slab. It has the effect of reducing costs and securing height between floors.

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 to 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 is reduced. As it is concentrated on the coupling part of the fitting bolt and the fitting hole, it represents a serious problem in the safety of the corresponding part, and in order to compensate for this, additional measures or additional and continuous maintenance and repair work are carried out. Is there.

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.

Therefore, the conventional PC pillar inevitably forms a wide and thick protrusion of the intermediate support plate, so that the secure bonding and construction of the PC beam is made, but another problem by the intermediate support plate as described above, that is, the upper paper for fixing the PC beam Since the fingerboard and the intermediate support plate have a shape protruding integrally from the PC pillar, they are not aesthetically pleasing. As the above-mentioned protruding upper support plate and the intermediate support plate have a space invasion to the ceiling of the structure, the coupling part with the PC pillar And there is an urgent need for improved structures and construction methods for PC beams.

The present invention is to solve the problems described above, 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 unmolded portion to expose the embedded reinforcing steel bar of "⊃" shape By binding the PC beam directly to the PC reinforcing bar through the binding member or by connecting the ends of the PC beams to each other through a separate reinforcing connector, the PC beams are firmly and effectively connected to and connected from the PC pillars.

It is possible to prevent various safety accidents occurring in the construction process of the structure in advance, and through the solid and excellent binding force of the PC pillar and PC beam, the physical safety of the finished structure and the construction quality can be further improved. It is an object of the present invention to provide a binding structure of a PC beam to be used in a building structure by the composite method.

The present invention for achieving the object as described above, after manufacturing the PC column and the PC beam and PC slab to the site, and then moved to the site, the joint between the PC column and the PC beam and PC slab and the upper surface of the PC slab In the building structure by the PPC composite method comprising the step of topping the concrete,

In the PC pillar, the intermediate coupling portion and the upper coupling portion formed by unmolding concrete are formed to expose the main reinforcing bars, and the ends of the PC beams placed on the intermediate coupling portion and the upper coupling portion are formed in the shape of "⊃". The member is configured to bind with the main reinforcing bar of the PC pillar, and the insertion hole for inserting the end portion of the binding member of the "⊃" shape to the end of the PC beam, and the upper end of the PC beam groove portion to expose the insertion hole Formed by the insertion of the main reinforcing bar of the PC column is inserted into the insertion hole in the state that is accommodated inside the binding member is fixed to form the end of the binding member protruding into the groove portion is configured to achieve a solid binding to the PC pillar and the PC beam. .

According to the present invention, since the solid connection and connection between the PC pillar and the PC beam are made, it is possible to prevent safety accidents or poor construction during the connection work of the PC slab and the concrete topping process, and the cast iron and the PC beam exposed from the PC pillar are bound. Therefore, the binding force of the PC beam is very excellent, but the joint construction of the PC column and the PC beam is made, so the physical construction safety is excellent.

In addition, since the opposite ends of neighboring PC beams are connected to each other by the main reinforcing bars of the PC column and separate reinforcing connecting members, the entire structure is integrated and thus the load transmission and distribution are effectively performed. It is very economical because the number of design requirements and the number of materials used can be reduced while the design interval is wider.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with 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 a frame of a building structure according to the present invention, Figure 2 is a perspective view of the state of the PC beam coupled to the PC pillar of the present invention, Figure 3 is a plan view of the state of the PC beam coupled to the PC pillar of the present invention 4 is a side cross-sectional view of the PC beam coupled to the PC pole 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 in which the main reinforcing bar 13 is embedded in the vertical longitudinal direction, and the embedded main reinforcing bar 13 is exposed in the middle part and the upper part of the PC column 10. It is to have an intermediate coupling portion 11 and the upper coupling portion 12 which is a concrete unmolded portion. 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 direct coupling with the cast iron 13 in the exposed state in the intermediate coupling portion 11 and the upper coupling portion 12 through a separate binding member (50).

That is, the "⊃" character with the insertion hole 24 formed at the end of the PC beam 20 while the end of the PC beam 20 is placed on the intermediate coupling part 11 and the upper coupling part 12. Insert both ends of the binding member 50 in the form, so that the main reinforcing bar 13 of the PC pillar 10 is located inside the binding member 50. In addition, the upper end of the PC beam 20 is formed with a groove portion 23 through which the insertion hole 24 is exposed, and the binding member 50 into which the both ends are inserted through the insertion hole 24 is the groove portion. (23) Since it is to be protruded inwardly, by securing a separate nut 51 to the binding member 50 in the protruding state, it is possible to obtain a solid binding force for the PC pillar 10 and the PC beam 20.

At this time, the binding member 50 is made of a bent metal rod body, both ends should be formed with a screw for fastening the nut (51).

In addition, when the nut 51 is coupled to the end of the binding member 50 as described above, the nut 51 rotates to be in close contact with the inner surface of the end side of the groove 23, and is bound according to the rotational force of the nut 51. The member 50 is subjected to a force to move in the direction of the PC beam 20 and eventually the binding member 50 will have a firm fixing force in close contact with the main reinforcing bar (13). Here, by additionally inserting the washer in a variety of forms before screwing the nut 51 to the binding member 50, as well as preventing loosening of the nut 51, the concrete cured PC beam 20 is a metal material It can be prevented from being broken by the nut 51.

Accordingly, when the PC pillar 10 and the PC beam 20 are firmly bound to each other by the binding member 50 having a “⊃” shape as described above, the connection of the PC slab 30 is based on a stable fixing force between them. In this process, the PC beam 20 may be prevented from flowing or being conducted, and thus a safe operation may be performed. As illustrated in FIG. 5, the concrete to be coated by topping at the joint between the PC pillar 10 and the PC beam 20 is illustrated. When the layer 60 is formed, as the overlay concrete layer 60 is cured, the PC pillar 10 and the PC beam 20 are joined to each other in a state of being integrated, and a binding member embedded in the junction ( 50) strongly secures and supports the PC pillar 10 and the PC beam 20, so that cracks or breakage occurring at these joints can be prevented.

FIG. 6 and a cross-sectional view of FIG. 7 show another embodiment of the binding structure of the present invention, and a nut such as electricity as a means for fixing the “상기” shaped binding member 50. Instead of using 51), the reinforcing bars in the PC beam 20 used to form the PC beam 20 and the binding member 50 can be directly connected to secure more powerful connection and fixing force. It is.

That is, the PC beam 20 is essentially having a reinforcing bar 25 embedded therein, the reinforcing bar 25 is to the inside of the groove 23 formed in the upper end of the PC beam 20 When the binding member 50 is inserted into the insertion groove 24 so that the end of the binding member 50 protrudes into the groove portion 23 in the protruding state, the protruding members face each other in the groove portion 23. The ends of the reinforcing bar 25 and the binding member 50 may be connected and fixed to each other through the coupling 52.

At this time, the coupling 52 is made of a metal tubular body, respectively, the ends of the reinforcing bar 25 and the binding member 50 through the two ends of the coupling 52, respectively, or these reinforcing bars 25 In the state where the end of the coupling member 50 is inserted into the coupling 52, it is possible to use a separate compression means (which may use a manual compressor if necessary) to operate strongly by hydraulic or pneumatic pressure. When the coupling 52 is compressed, the reinforcing bar 25 and the binding member 50 are able to maintain a firm connection and coupling state by the coupling 52 to be compressed.

Therefore, the binding member 50 as described above serves to directly connect the reinforcing bars 25 of the PC reinforcement 13 and the PC beam 20 of the PC pillar 10, these PC pillar 10 And the PC beam 20 is a very excellent structural safety because the transfer and distribution of the load smoothly according to the integrated joint construction.

8 is a cross-sectional view of the top and the side cross-sectional view of Figure 9 shows another embodiment for binding the PC column 10 and the PC beam 20, the outer end from the groove portion 23 of the PC beam 20 As the reinforcing hole 26 of the penetrating form is further formed on the side of the insertion hole 24 which is penetrated toward the other, as the reinforcing holes 26 insert a separate reinforcing connecting member 53 into neighboring PC beams ( 20) it is possible to further increase the bonding force between.

That is, even though the PC pillar 10 and the PC beam 20 are bound by the binding member 50 having a “⊃” shape as in the above-described embodiment, the PC beam 20 is connected to the PC pillar 10. Since only the main reinforcing bar 13 of the state is bound to the PC beam 20 disposed on both sides of the PC pillar 10 is to be kept separated from each other.

Accordingly, when the PC beams 20 through which the reinforcing holes 26 are additionally formed are disposed to face each other at the intermediate coupling portion 11 or the upper coupling portion 12 of the PC pillar 10, The reinforcing holes 26 of neighboring PC beams 20 are continuously positioned in a straight shape.

Therefore, as described above, both ends of the separate reinforcing connecting member 53, that is, the reinforcing connecting member 53 made of reinforcement, are inserted into the reinforcing holes 26 of the fish beams 20 disposed on both sides of the PC pillar 10 as described above. In the case of forming the overlaid concrete layer 60 described above, the reinforcement connecting member 53 serves to directly connect neighboring PC beams 20 to each other so that each PC beam 20 is more robust. It will have a single and stable connection structure.

In this case, in consideration of the length of the reinforcing connecting member 53, it is preferable to extend the groove 23 formed on the upper surface of the PC beam 20 along the longitudinal direction, and as the length of the reinforcing connecting member 53 is longer, Cohesion between neighboring PC beams 20 will be increased. Furthermore, even if the groove 23 is formed long, the groove 23 is filled by the concrete layer 60 in the process of site casting, so that the physical strength of the PC beam 20 itself is not weakened. will be.

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

Figure 3 is a plan view of the PC bonded to the PC pillar of the present invention

Figure 4 is a side cross-sectional view of the PC beam coupled to the PC pillar of the present invention

Figure 5 is a side cross-sectional view of the bonded state of the PC beam construction of the PC pillar of the present invention

6 is a plan view of another embodiment in which the PC beam of the present invention is bound;

7 is a side cross-sectional view of FIG. 6

8 is a plan view of another embodiment in which the PC beam of the present invention is bound;

9 is a side cross-sectional view of FIG. 8.

Explanation of symbols on the main parts of the drawings

10: PC pillar 11: intermediate coupling portion

12: upper coupling portion 13: cast steel

20: pcbo 23: home

24: insertion hole 25: rebar

26: reinforcement

30: PC slab

50: binding member 51: nut

52: coupling 53: reinforcing connector

60: overlay concrete layer

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 of an intermediate coupling portion 11 and an upper coupling portion 12 formed by unmolding concrete to expose the cast iron 13 therein, the intermediate coupling portion 11 and the upper coupling portion. An end of the PC beam 20 placed on the (12) is configured to be bound with the main reinforcing bar 13 of the PC pillar 10 by the binding member 50 of the "⊃" shape, The PC beam 20 forms an insertion hole 24 for inserting an end portion of the binding member 50 having a “⊃” shape at an end thereof, and the insertion hole 24 is exposed at the upper end of the PC beam 20. The groove 23 is formed, and both ends of the binding member 50 are inserted into the insertion beam 24 at the ends of the PC beam 20 so that the main reinforcing bar 13 of the PC pillar 10 is positioned inside the binding member 50. By firmly forming the ends of the binding member 50 protruding inwardly of the groove portion 23 with the PC beam 20 to be firmly coupled to the PC pillar 10 and the PC beam 20 by A binding structure of a PC beam used in a building structure by a PCC composite method, characterized in that it is configured to be built. The method of claim 1, The binding member 50 is cast iron by the fastening force of the nut 51 that is in close contact with the inner surface of the groove 23 by screwing the nut 51 to the binding member 50 protruding into the groove 23. (13) and the binding structure of the PC beam used in the building structure by the PPC composite method, characterized in that it is configured to maintain a firm coupling state. The method of claim 1, The groove 23 of the PC beam 20 is configured such that the end of the binding member 50 and the reinforcing bar 25 embedded in the PC beam 20 face each other so as to protrude to each other. A binding structure of a PC beam used in a building structure by the PI composite method, characterized in that the reinforcing bar (25) is fixed by coupling (52). The method of claim 1, The PC beam 20 forms a reinforcing hole 26 that penetrates the side cross-section of the PC beam 20 from the groove portion 23, and is disposed on both sides of the PC pillar 10 to face each other. By inserting a separate reinforcing connector (53) in the reinforcing hole 26 of the PIA beams characterized in that configured to be integrally connected in the transverse direction by the neighboring PC beams (20) Binding structure of PC beam used for building structure by seed compounding method.

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