JP2005146574A - Reinforcing structure of unit building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily build a mid-to-high-rise unit building. <P>SOLUTION: In this reinforcing structure of the unit building 1 composed of a building unit group 10A with a plurality of building units 10 joined horizontal and vertical directions, a reinforcing frame 20 is provided around the building unit group 10A, and the building unit group 10A and the reinforcing frame 20 are connected to each other. Further, the reinforcing frame 20 is provided with vibration control devices 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a reinforcing structure for a unit building.

As described in Patent Document 1, in a three-story unit building composed of a plurality of building units, there is one in which strength against horizontal load and vertical load is improved by adding a reinforcing frame in the wall surface of the building unit.

As described in Patent Document 2, there is a middle-layer unit building including a plurality of building units in which a steel column is set up outside the building unit and the building unit is connected to the steel column.
JP 56-139930 JP 54-31912

When building a middle-rise unit building using the prior art of Patent Document 1, it is necessary to reinforce the pillars and beams of the building unit and add a reinforcing frame each time the building scale increases. The size of the building is determined by the range in which the pillars and beams of the building unit can be strengthened and the range in which the reinforcement frame can be installed. Also, every time a column or beam is strengthened or a reinforcing frame is installed, the number of building units increases, and the production efficiency of building units deteriorates.

When building a middle-rise unit building using the prior art of Patent Document 2, the load borne by the steel column is very large, and the steel column requires a large cross-sectional strength.

  An object of the present invention is to simply construct a middle-rise unit building.

The invention of claim 1 is a reinforcing structure of a unit building composed of a building unit group in which a plurality of building units are joined in a horizontal direction and a vertical direction, and a reinforcing frame is provided around the building unit group. The group and the reinforcing frame are connected, and a vibration damping device is provided on the reinforcing frame.

According to a second aspect of the present invention, in the first aspect of the present invention, the vibration damping device is further interposed between the structural members of the reinforcing frame.

(Claim 1)
(a) Apart from the building units that constitute the floor plan of the unit building, a reinforcing frame that bears the horizontal load of the building was installed around the building unit group.

(b) The pillars and beams of the building unit will mainly bear only vertical loads. In general,
The load borne by the pillars and beams of the building unit is almost horizontal. Therefore, by placing the horizontal load on the reinforcing frame, the load on the building unit can be greatly reduced, and it is not necessary to reinforce the pillars and beams of the building unit even if the size of the building is increased.

(c) The reinforcing frame bears only the horizontal load, and this horizontal load can be reduced by the presence of the vibration damping device. Accordingly, the required strength of the reinforcing frame can be reduced, and the cross section of the constituent material of the reinforcing frame can be reduced, so that the area occupied by the building unit can be increased.

(d) A standard building unit for low-rise buildings can be used to construct a middle-rise unit building, and the application range of the building unit can be expanded without reducing production efficiency. Further, the cross-sectional performance of the columns and beams constituting the reinforcing frame can be reduced by the effect of the vibration damping device, and the steel material cost of the middle-layer unit building can be reduced.

(Claim 2)
(e) Since the vibration damping device is interposed between the structural members of the reinforcement frame, the vibration damping device can be installed in a space-saving and effective manner on the reinforcement frame, and the horizontal load borne by the reinforcement frame can be reduced.

1 is a perspective view showing a building unit and a reinforcing frame, FIG. 2 is a perspective view showing a reinforced unit building, FIG. 3 is an oil damper, (A) is a perspective view of an oil damper attached state, and FIG.
) Is a cross-sectional view of the oil damper, FIG. 4 is a friction damper, (A) is a perspective view of the friction damper mounted state, (B) is a cross-sectional view of the friction damper, and (C) is CC of (B). It is sectional drawing which follows a line.

As shown in FIGS. 1 and 2, the unit building 1 includes a building unit group 10A in which a plurality of building units 10 are joined in a horizontal direction and a vertical direction, and a reinforcing frame 2 around the building unit group 10A.
0 is provided to connect the building unit group 10 </ b> A and the reinforcing frame 20, and the damping device 30 is provided to the reinforcing frame 20.

The building unit 10 is composed of a frame structure having a rigid frame structure in which, for example, four columns 11 made of square steel pipes, floor beams 12 made of shape steel, and ceiling beams 13 made of shape steel are joined in a box shape. Building unit 1
After being produced at the factory, 0 is transported to the construction site, and on the foundations pre-installed on the construction site,
Installed with a crane. The building unit 10 is connected to another building unit 10 adjacent in the horizontal direction and the vertical direction on the foundation, for example, to construct a building unit group 10A of a fifth floor building.

The reinforcing frame 20 is made of, for example, a column 21 made of H-shaped steel or the like, a beam 22 made of H-shaped steel or the like joined in a box shape, and reinforced by a middle column 23 made of square steel pipe or a diagonal member 24 made of shaped steel. It consists of a frame structure with a ramen structure. The reinforcing frame 20 is constructed on a foundation at a construction site.

Either the building unit group 10A or the reinforcement frame 20 may be preceded. The building unit group 10 </ b> A may be constructed first, the reinforcement frame 20 may be constructed around the building unit group 10 </ b> A, and each building unit 10 of the building unit group 10 </ b> A may be connected to the reinforcement frame 20. On the other hand, the reinforcement frame 20 is constructed first, the building unit group 10A is constructed by suspending each building unit 10 inside the reinforcement frame 20, and each building unit 10 of the building unit group 10A is connected to the reinforcement frame 20 But it ’s okay.

The vibration damping device 30 is interposed between, for example, the pillar 21 and the beam 22 that are components of the reinforcing frame 20. At this time, the oil damper 30A shown in FIG.
The oil damper 30 </ b> A is an assembly of a cylinder 31 and a piston rod 32, and the cylinder 31 is fixed by a piston 33 fixed to the tip of the piston rod 32 inserted into the cylinder 31.
The oil chamber 34 is divided into two parts, and a damping force generation valve (not shown) is provided in an oil passage provided in the piston 33 so that the two oil chambers 34 can communicate with each other.

The attachment portion 31A of the cylinder 31 of the oil damper 30A is, for example, the column 21 of the reinforcing frame 20.
When the attachment portion 32A of the piston rod 32 is attached to the beam 22, for example, the reinforcing frame 2
When the zero column 21 and the beam 22 vibrate due to, for example, seismic force and the cylinder 31 and the piston rod 32 are relatively displaced, the oil in the oil chamber 34 moves through a damping force generation valve or the like, and is attenuated by this oil flow resistance. A damping force generated by a force generation valve or the like suppresses external vibrations, and consequently reduces a horizontal load acting on the reinforcing frame 20.

The vibration damping device 30 may employ the friction damper 30B shown in FIG. Friction damper 30B
The center plate 41 is sandwiched between two side plates 42, and a friction plate 43 is interposed between the plates 41, 42, so that the elongated holes 44 of the center plate 41 and the holes 45 of the side plate 42 are inserted. The center plate 41, the side plate 42, and the friction plate 43 are connected to the disc spring 47 and the washer 48A by a nut 46A that is passed through the bolt 46 and fastened to the bolt 46.
, 48B.

When the attachment portion 41A of the center plate 41 of the friction damper 30B is attached to, for example, the column 21 of the reinforcing frame 20, and the attachment portion 42A of the side plate 42 is attached to, for example, the beam 22, the column 21 and beam 22 of the reinforcing frame 20 When the center plate 41 and the side plate 42 are displaced relative to each other, the displacement energy is consumed by the friction of the friction plate 43 to suppress the external vibration, and thus the horizontal load acting on the reinforcing frame 20 is reduced.

According to the present embodiment, the following operational effects can be obtained.
(a) Apart from the building unit 10 constituting the floor plan of the unit building 1, a reinforcing frame 20 bearing a horizontal load as a building is installed around the building unit group 10A.

(b) The pillar 11 and the beams 12 and 13 of the building unit 10 mainly bear only a vertical load. In general, the load borne by the pillar 11 and the beams 12 and 13 of the building unit 10 is almost a horizontal load. Therefore, by placing the horizontal load on the reinforcing frame 20, the load on the building unit 10 can be greatly reduced, and the pillar 11 and the beams 12 and 13 of the building unit 10 are strengthened even if the size of the building is increased. There is no need to do it.

(c) The reinforcing frame 20 bears only a horizontal load, and this horizontal load is reduced by the presence of the vibration damping device 30. Accordingly, the required strength of the reinforcing frame 20 can be reduced, and the cross-section of the constituent materials (columns 21, beams 22, middle columns 23, diagonal members 24) of the reinforcing frame 20 can be reduced. Can do.

(d) The standard building unit 10 for low-rise building can be used to build the middle-rise unit building 1, and the application range of the building unit 10 can be expanded without reducing the production efficiency. Further, due to the effect of the vibration damping device 30, the pillar 21, the beam 22, the middle pillar 23, which constitute the reinforcing frame 20
The cross-sectional performance of the diagonal member 24 can be reduced, and the steel frame material cost of the middle-layer unit building 1 can be reduced.

(e) The vibration damping device 30 is made up of the components of the reinforcing frame 20 (column 21, beam 22, middle column 23, diagonal member 24).
), The vibration damping device 30 can be installed in a space-saving and effective manner with respect to the reinforcing frame 20, and the horizontal load borne by the reinforcing frame 20 can be reduced.

The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. Included in the invention. For example, the reinforcing frame is not limited to the ramen structure but may be a truss structure or the like.

FIG. 1 is a perspective view showing a building unit and a reinforcing frame. FIG. 2 is a perspective view showing a reinforced unit building. 3A and 3B show the oil damper, FIG. 3A is a perspective view of the oil damper mounted state, and FIG. 3B is a cross-sectional view of the oil damper. 4A and 4B show the friction damper, where FIG. 4A is a perspective view of the friction damper attached, FIG. 4B is a sectional view of the friction damper, and FIG. 4C is a sectional view taken along the line CC in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Unit building 10 Building unit 10A Building unit group 20 Reinforcement frame 21, 22, 23, 24 Component 30 Damping device

Claims (2)

A unit building reinforcement structure composed of a group of building units obtained by joining a plurality of building units in a horizontal direction and a vertical direction,
A reinforcing structure for a unit building, wherein a reinforcing frame is provided around the building unit group, the building unit group and the reinforcing frame are connected, and a vibration damping device is provided on the reinforcing frame. The reinforcing structure of a unit building according to claim 1, wherein the vibration damping device is interposed between structural members of a reinforcing frame.

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