JP2002256620A - Building and method for constructing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily form a building with a reinforced concrete-constructed stud, in which axial force does not work. SOLUTION: A column material 7 is disposed in upright onto a floor face 9 under the state in which a level set bolt 13 is arranged between the lower end section 7b of the column material 7 and the floor face 9, a beam is built under the state in which the beam is unified with the upper end section of the column material 7 between the mutual upper end sections of columns positioned, holding the column material 7, the level set bolt 13 is screwed into a tapped hole 12, a section between the lower end section 7b of the column material 7 and the floor face 9 is separated, and the stud 6 and a plane of structure with the stud 6 are formed by filling the section between the lower end section 7b of the column material 7 and the floor face 9 with grout concrete 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a building having a structure in which a stud that does not bear an axial force is disposed between pillars, and a building suitable for use in an apartment house or the like. It is.

[0002]

2. Description of the Related Art When a pure ramen structure is employed in forming an RC house, there is a problem in that large columns and beams protrude into the dwelling units, thereby reducing the degree of freedom of the plan. For this reason, recently, various construction methods for eliminating pillars and beams in dwelling units have been developed in order to enable a free plan.

[0003] One of them is to adopt a tube structure in which a cylindrical outer frame is provided on the outer periphery of a building, and an inner frame is provided inside the outer frame so as to surround a void at the center of the building. A structure has been proposed in which the column span of the peripheral body is reduced to about half (about 3 m) of the column span of the outer peripheral body (for example, about 6 m).

[0004] When the column span is reduced in this way, the rigidity and the proof strength of the building can be increased. However, since the span of the beam is short, brittle shear failure may occur in the beam. Therefore, in order to prevent the beam from being sheared, such a tube structure requires the use of X-shaped reinforcing bars for the beam. However, although the X-type reinforcement has a high shear strength, the arrangement of the reinforcement is very complicated, and there is a great problem in construction.

[0005] In order not to use the X-shaped reinforcing bars for the beams, it is conceivable to weaken the columns to yield the columns. However,
If the columns supporting the load of the building are yielded, the load cannot be supported.

Therefore, it has been considered that every other column receiving a load is provided in the inner peripheral frame of the tube structure, and a stud to which no axial force acts is provided between these columns. By adopting such a structure, in the event of an earthquake, the studs yield before the beam, reducing the possibility of brittle shear failure in the beam, and using X-type reinforcement for the beam. This can be unnecessary.

[0007]

However, when the pillar is made of steel, it is easy to adopt a structure in which no axial force acts on the pillar. However, when the pillar is made of reinforced concrete, It has been difficult to realize such a structure. In view of such circumstances, it is an object of the present invention to provide a method capable of easily constructing a building having a reinforced concrete stud in which axial force does not act, and a building realizing such a structure. I do.

[0008]

Means for Solving the Problems To solve the above problems, the present invention employs the following means. The method for building a building according to claim 1, wherein the building has a reinforced concrete construction surface in which a stud that does not bear an axial force is disposed between the columns. On the floor surface located at a position, the column material is erected with the spacer arranged between the lower end portion and the floor surface, and a beam is provided between the upper end portions of the columns. Erected in a state of being integrated with the upper end of the column, removing the spacer, separating the lower end of the column and the floor, and between the lower end of the column and the floor. The structure surface is formed by filling a grout material into the surface.

According to a second aspect of the present invention, there is provided the building construction method according to the first aspect, wherein a bolt is used as the spacer, and the bolt is screwed into a screw hole provided at a lower end of the pillar. The bolt is screwed into the screw hole in order to remove the spacer while the spacer is attached.

According to a third aspect of the present invention, there is provided a method for constructing a building, comprising: a cylindrical outer peripheral frame formed along an outer peripheral portion; and a reinforced concrete inner peripheral frame provided inside the outer peripheral frame. A stud is arranged between the pillars constituting the inner peripheral frame, and the stud is configured to have a reinforced concrete pillar material, and the pillar material has an upper end portion at an upper end portion of the pillar. While being joined to the beam erected between them,
The lower end thereof is provided in a state separated from the floor surface located between the columns, and the grout material is filled between the lower end of the column material and the floor surface. It is characterized by having.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 9 is a diagram showing an embodiment of the present invention, in which reference numeral 1 indicates a building. This building 1 is a high-rise building made of reinforced concrete, and is used for applications such as an apartment house. In building 1,
A cylindrical outer peripheral body 2 is formed along the outer peripheral portion, and a void 3 is formed inside the outer peripheral body 2. Further, a void 3 is formed inside the outer peripheral body 2 so as to surround the void 3. The inner peripheral frame 4 is formed so as to be positioned.

As shown in the drawing, an outer frame 2 and an inner frame 4 are respectively composed of column spans S1 and S2 having predetermined dimensions.
However, the column span S of the inner peripheral frame 4 is
2 is about 1/2 of the column span S1 of the outer frame.
Here, the inner peripheral frame 4 is a column 5 for bearing a building load.
And the studs 6 that do not bear the axial force are arranged alternately.

FIG. 8 is a diagram showing a situation when the structure of the inner peripheral frame 4 is formed. As shown in FIG.
The studs 6 disposed between the pillars 5 are formed by using a pillar material 7 which is a precast member made of reinforced concrete. The lower end portion 7b and the floor surface 9 are arranged so that the lower end portion 7b and the floor surface 9 are separated from each other while being joined to the beam 8 erected between the portions 5a. And grout concrete (grout material) 10 is filled in between them. FIG. 1 shows an enlarged view of the condition of the lower end of the stud 6.

Next, a method of constructing the structure of the inner peripheral frame 4 in the building 1 will be described with reference to FIGS. First, as shown in FIG. 2, the columns 5 are erected at predetermined positions on the floor surface 9, and the pillar members 7 forming the studs 6 are provided on the floor surface 9 located between the columns 5. At its lower end 7b
And the floor 9 is erected. here,
As shown in an enlarged manner in FIG.
A screw hole 12 is provided, and a level set bolt 13 is screwed into the screw hole 12. Here, the level set bolt 1 is projected from the lower end portion 7b of the column member 7 downward by a predetermined dimension, so that the level set bolt 1
3 functions as a spacer, thereby separating the lower end 7b of the column member 7 from the floor surface 9.

Next, as shown in FIG. 4, a beam 8 is formed by placing concrete between the upper end portions 5a of the pillars 5 located with the studs 6 interposed therebetween. At this time, the space between the upper end of the stud 6 and the beam 8 is also integrated. After the beams 8 are formed in this way, as shown in FIG. 5, the columns 5 are erected on the floor 9 supported by the beams 8, and the column members 7 are interposed between the columns 5 and 5.
Is erected in a state similar to the state shown in FIG. Also,
At this time, the level set bolt 13 (see FIG. 4) at the lower end 7b of the column member 7 located below the standing column member 7 is loosened and screwed into the screw hole 12. As a result, FIG.
As shown in the enlarged view, the lower end portion 7b of the column member 7 and the floor surface 9 located thereunder are separated from each other,
As shown in FIG. 5, the column member 7 is suspended from the beam 8 above it.

Further, as shown in FIG. 7, the upper ends 5 of the pillars 5, 5 located on the upper floor of the pillar 7 suspended from the beam 8.
a, concrete is cast between the a and 5a to form a beam 8, and a column member 7 disposed between the columns 5 and 5 is formed.
Is integrated with the beam 8. Then, as shown in FIG. 8, the column set 7 is similarly loosened by loosening the level set bolt (see FIG. 7) and screwed into the screw hole 12 as shown in FIG. Is suspended from the beam 8 above it. After that, the grout concrete 10 is filled between the pillar material 7 below the floor and the floor surface 9 to form the stud 6. By repeating the above procedure, the structure of the inner peripheral frame 4 is sequentially formed from below to above.

In the above-described method of forming the surface of the inner peripheral frame 4 (building method), the level setting bolts 13 provided at the lower end 7b of the column 7 function as spacers, so that the column 7 After forming a gap between the floor member 9 and the upper end portion 7a of the column member 7 and the beam 8 located above the column member 7, a level set bolt 13 as a spacer is attached to the column member 7. Screw it into the lower end 7b
Since the lower end 7b of the column 7 is separated from the floor 9 and the grout concrete 10 is filled between the lower end 7b of the column 7 and the floor 9, the reinforced concrete structure is used. The stud 6 can be a bent pillar that does not easily bear the axial force. This allows the stud 6 to yield before the beam 8 as a bent column during an earthquake, thereby obtaining a damper effect. Thereby, it is possible to prevent brittle shear failure from occurring in the beam 8, eliminate the need to apply X-type reinforcing bars to the beam 8, and reduce the construction cost of the building 1 and the construction period.

Further, since the level set bolt 13 is used as a spacer, the column member 7 can be easily suspended from the beam 8 by removing the level set bolt 13 into the screw hole 12 (removing the spacer). It has good workability.

Further, in the above-mentioned building 1, a stud 6 is provided between the pillars 5 of the inner peripheral frame 4 and a column member 7 constituting the stud 6 is separated from the floor 9 by a space. Since the grout concrete 10 is filled during this time, the axial force is not transmitted from the beam 8 to the stud 6. Thereby, the stud 6 can be made to function as a bent pillar, and the damper effect can be obtained by yielding the stud 6 prior to the beam 8 during an earthquake. Thereby, the construction cost related to the shear reinforcement of the beam 8 can be reduced and the labor can be saved, and as a result, the construction cost of the entire building 1 can be reduced, the workability can be improved, and the construction period can be shortened. Furthermore, compared with the case of using a general vibration damping material such as extremely mild steel, it is possible to improve the earthquake resistance at low cost.

In the above embodiment, when the column member 7 is erected, the lower end portion 7b of the column member 7 and the floor surface 9 are replaced by a spacer of another form instead of the level set bolt 13. You may make it separate.

[0021]

As described above, according to the building construction method of the present invention, when the stud is formed, the lower end of the pillar is provided by the spacer provided between the lower end of the pillar and the floor surface. The floor is separated from the floor, and the grout is filled between the lower end of the column and the floor, so that the reinforced concrete stud is a bent column that does not easily bear the axial force. Can be. This allows the stud to function as a bent column that does not support the load, and allows the bent column to yield before the beam during an earthquake. Thereby, it is possible to prevent brittle shear failure from occurring in the beam, eliminate the need to apply X-type reinforcing bars to the beam, and reduce the construction cost of the building.

In this case, if the level set bolt is used as the spacer, the removal of the spacer can be completed easily by screwing the level set bolt into the screw hole, and the workability is good.

Further, in the building of the present invention, a stud is provided between the pillars of the inner peripheral frame, and a pillar material constituting the stud is separated from a floor surface, and a grout material is interposed therebetween. Because of the filled configuration, it is possible to prevent the axial force from the beam from being transmitted to the stud. As a result, the studs can function as bent columns, and in the event of an earthquake, the studs can be yielded prior to the beams to obtain a damper effect, thereby reducing construction costs related to shear reinforcement of the beams and saving labor for work. Therefore, the construction cost of the entire building can be reduced, the workability can be improved, and the construction period can be shortened. Furthermore, compared with the case of using a general vibration damping material such as extremely mild steel, it is possible to improve the earthquake resistance at low cost.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing an embodiment of the present invention, and is an enlarged elevational view showing a lower end portion of a stud installed on an inner peripheral frame of a building.

FIG. 2 is an elevational view showing one process when constructing the surface of the inner peripheral frame of the building of the present invention.

FIG. 3 is an enlarged elevational view showing a lower end of the stud in FIG. 2;

FIG. 4 is an elevation view showing the next step of FIG. 2;

FIG. 5 is an elevation view showing the next step of FIG. 4.

FIG. 6 is an enlarged elevational view showing a lower end portion of the stud in FIG. 4;

FIG. 7 is an elevation view showing the next step of FIG. 5.

FIG. 8 is an elevation view showing the next step of FIG. 7;

FIG. 9 is a plan view of the building of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 2 Outer frame 4 Inner frame 5 Pillar 6 Stud 7 Pillar 7a Upper end 7b Lower end 8 Beam 9 Floor 10 Grout concrete (Grout material) 12 Screw hole 13 Level set bolt

Claims (3)

[Claims] 1. A method for constructing a building having a reinforced concrete structure in which studs that do not bear an axial force are disposed between pillars, wherein a floor is located between the pillars. The column is erected with the spacers disposed between its lower end and the floor, and a beam is integrated with the upper end of the column between the upper ends of the columns. In this state, the spacer is removed, the lower end of the pillar is separated from the floor, and the grout is filled between the lower end of the pillar and the floor. A method for building a building, characterized in that the building surface is formed. 2. The building construction method according to claim 1, wherein a bolt is used as the spacer, and the bolt is screwed into a screw hole provided at a lower end of the pillar, and the spacer is removed. The method of constructing a building, wherein the bolt is screwed into the screw hole. 3. A column and a column comprising a cylindrical outer peripheral body formed along an outer peripheral portion, and a reinforced concrete inner peripheral body provided inside the outer peripheral body. A stud is disposed between the stud and the stud, and the stud has a reinforced concrete pillar, and the pillar has a top end formed by a beam erected between the top ends of the pillars. And the lower end thereof is provided in a state of being separated from the floor surface located between the columns, and between the lower end of the column material and the floor surface. Is a building filled with grout.