JPH11311038A - Vibration control method for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve vibration control force at a low cost by arranging prestress cables and a viscous body in the prescribed state in communicating spaces provided in foundation piles, columns and a beam. SOLUTION: A first prestress cable 15 fixed with its upper end section to the right apex A' of a building is inserted into the space section 12a of a beam 12, it is inserted into the space section 11a of a column 11 via a pulley 17, and it is guided into the space section 13a of a foundation pile 13 through a base section 14. A second prestress cable 16 fixed with its upper end section to the left apex B' of the building is inserted into the space section 12a, it is inserted into the space section 11'a of a column 11' via a pulley 18, and it is guided into the space section 13'a of a foundation pile 13' through the base section 14. Vane-shaped resistors 20 are fitted to the vertical sections of the cables 15, 16 at the prescribed intervals, and a viscous body 19 such as asphalt is sealed in the space sections. The frictional force with the viscous body 19 is increased by the vane-shaped resistors 20, shakes at the time of an earthquake can be effectively damped, and the cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control method for a building.

[0002]

2. Description of the Related Art From the experience of having suffered enormous damage due to a large earthquake, it is urgent to take countermeasures against vibrations in buildings. At present, various seismic control methods are being studied and put into practice. In these seismic control methods, it is of course important that they are technically superior, but they are not practically applicable if they require a large amount of construction cost, so it is important that the construction cost does not increase significantly. However, many of the conventionally-developed seismic control methods pose a problem in that the construction cost rises.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional situation, and is intended to provide a building control system capable of obtaining an excellent vibration control effect without significantly increasing the construction cost. The purpose is to provide a seismic method.

[0004]

As a means for achieving this object, the present invention provides a space part communicating with the inside of a foundation pile, a pillar or a beam of a building, and inserts a prestress cable into this space part. And at least one end is fixed,
The gist of the present invention is a vibration control method for a building in which a viscous material such as asphalt is sealed in the space and a blade-shaped resistor is attached to the prestressed cable at regular intervals.

[0005]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a column constituting a building frame, reference numeral 2 denotes a beam, reference numeral 3 denotes a foundation pile, and spaces 1a, 2a, and 3a are provided in communication with these.

Reference numerals 5 and 6 denote symmetrically provided prestressed cables. In FIG. 1, the first prestressed cable 5 has an upper end fixed to the right apex A of the building and a space 2a of the beam 2. Through the pulley 7 provided at the left end part, it is drawn into the space part 1a of the left column 1, and further penetrates the base part 4 and is introduced into the space part 3a of the foundation pile 3, and the lower end part is the base pile. 3 is fixed to the distal end portion C. On the other hand, the second prestress cable 6 has an upper end fixed to the left top B of the building, passes through the space 2 a of the beam 2, and passes through the pulley 8 provided at the right end of the right pillar 1 ′. Space 1'a
And is further introduced through the base 4 into the space 3'a of the foundation pile 3 ', and the lower end is fixed to the tip D of the foundation pile 3'. A viscous body 9 such as highly viscous asphalt is enclosed in the communicating space.

The first and second prestressed cables 5 and 6 exert a tensile force on the building, exert a counterforce when the building shakes during an earthquake, and reduce the shaking of the building. it can. The viscous body 9 generates a frictional force with respect to the movement of the first and second prestressed cables 5 and 6, and attenuates these movements to attenuate the shaking of the building.

FIG. 2 shows another embodiment of the present invention. The basic structure is the same as that of FIG. 1, that is, the first prestressed cable 15 has an upper end on the right top A 'of the building.
And is drawn into the space 11a of the left column 11 through the space 12a of the beam 12 via the pulley 17 provided at the left end of the space 12a, and further, to the base 14
And is introduced into the space 13a of the foundation pile 13,
The lower end is not fixed unlike in FIG. on the other hand,
The second prestress cable 16 has an upper end fixed to the left top B ′ of the building, passes through the space 12 a of the beam 12, and passes through a pulley 18 provided at the right end to form a right pillar 11 ′.
Is introduced into the space 13'a of the foundation pile 13 'through the base portion 14, but the lower end thereof is not fixed. A viscous body 19 such as asphalt is sealed in the communicating space as described above. In this case, as shown in FIG.
The blade-shaped resistors 20 are attached to the vertical portions of the fifth and second prestress cables 16 at regular intervals. Various shapes such as a disk shape and a square plate shape can be considered as the shape of the resistor 20 in order to change its resistance.

The first and second prestressed cables 15,
In the case of the viscous body 1, although the lower end is not fixed to the tip of the foundation piles 13, 13 ′, a large number of blade-shaped resistors 20 are attached to the vertical part as described above.
9 and the frictional force increases. This is for applying a large damping force to shaking during an earthquake, and it is more effective not to fix the lower ends of the first and second prestressed cables 15 and 16.

[0010]

As described above, according to the present invention,
At least one end is fixed by inserting a prestressed cable into the pillars, beams and foundation piles of the building, and a viscous material such as asphalt is sealed so that a tensile force can be applied, greatly increasing the construction cost. It is less expensive than conventional seismic control methods, and provides excellent vibration control effects by suppressing building rocking, horizontal and vertical movements during an earthquake. In addition, by attaching a blade-shaped resistor at predetermined intervals to the prestress cable, frictional resistance with the viscous body can be increased, and the shaking of the building can be effectively attenuated.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention.

FIG. 2 is a schematic view showing another embodiment of the present invention.

FIG. 3 is a partial explanatory view showing an example in which a blade-shaped resistor is attached to a prestressed cable.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Column 2 ... Beam 3 ... Foundation pile 4 ... Base part 5 ... First prestressed cable 6 ... Second prestressed cable 7, 8 ... Pulley 9 ... Viscous body 11 ... Column 12 ... Beam 13 ... Foundation pile 14 ... Base part 15... First prestressed cable 16.

Claims (1)

[Claims] 1. A space portion communicating with the inside of a foundation pile, a pillar, or a beam of a building is provided, a prestressed cable is inserted into the space portion, and at least one end thereof is fixed, and a viscous material such as asphalt is fixed to the space portion. And a blade-shaped resistor attached to the prestressed cable at regular intervals.