JP2528213B2 - PC plate mounting structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a mounting portion structure in which a PC plate (precast concrete plate) is mounted on a steel framework to form an outer wall of a curtain wall, a partition wall, or the like. is there.

[Conventional technology]

Conventionally, a structure shown in FIG. 31 has been known as a PC plate mounting portion structure (for example, see Japanese Utility Model Publication No. 54-20806). In this structure, a plurality of lower parts of the PC plate 101 are overlapped between the mounting bracket 102 integrally mounted on the PC plate 101 and the mounting pedestal 115 fixed to the lower beam member 105a of the steel frame. With the sheet metal 104a intervening, the mounting bracket
The lower beam member is obtained by inserting a bolt 113 into the 102, the deposit 104a, and the mounting pedestal 115 and screwing a nut 114a into the screw.
It is attached to 105a, and the upper part of the PC plate 101 is this PC plate 1
Insert the anchor bolt 103 embedded in 01 into the upper beam member 1
The fitting metal fitting 106 that is welded to 05b
The nuts 114b are fastened to the upper and lower beam members 105b via the sliding members 104b made of neoprene rubber on the front and back surfaces thereof. In this configuration, the mounting metal fitting 102 and the fitting metal fitting 106 have through holes formed therein as through holes for the bolts 103 and 113, the inner diameters of which are considerably larger than the bolt diameter, and the nuts 114a and 114b are mounted on the mounting metal fitting 102 and the fitting metal fitting. 106 is tightened by a relatively loose tightening force that does not come off, so that the PC plate 101 is attached to the beam member 105b so that the layer shear force acting on the beam member 105b tends to shift in the acting direction. Therefore, when the layer shear force acts on the steel frame set, interlayer displacement of the steel frame set is positively permitted, and the steel frame set shifts in the acting direction of the layer shear force at the mounting portion and causes interlayer displacement. Cause

[Problems to be Solved by the Invention]

In the steel plate building with a PC plate formed by the conventional PC plate mounting portion structure, since the PC plate 101 is mounted so as to positively allow the deformation of the beam member 105a, against the seismic force Is resisted only by the steel frame, and the above PC version 10
1 is attached to the above-mentioned steel framework only for the purpose of shielding, wind-shielding, sound-insulating and heat-insulating.

For this reason, PC made of reinforced concrete and having relatively high rigidity
The plate 101 is not effectively used as a structural member for earthquake resistance (vibration resistance), and the cross-sectional size of the steel frame framework becomes unnecessarily large, which causes a cost increase.

The present invention has been made in view of such circumstances, and by effectively utilizing the rigidity of the PC plate, it is possible to reduce the required cross section of the frame member, and to reduce the cost of the entire building. It is an object of the present invention to provide a PC plate mounting structure capable of achieving the required seismic resistance of the entire building on which the PC plate is mounted.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in claim 1 of the present invention, a PC plate, a frame member to which the PC plate is attached, are arranged between the both, and both are connected to each other. Displacement suppressing means, the PC plate and the frame member are arranged so as to face each other in a direction orthogonal to the direction of action of the layer shearing force acting on the PC plate, the displacement suppressing means, protruding formation on the PC plate The sliding part, the joint fitting fixed to the frame member, and the pressing beam member screwed to the PC plate, the pressing beam member,
It is made of an elastic material, and its middle part is placed in contact with the fitting in the state where the fitting is pressed against the sliding part, and the sliding part and the presser are held up to a predetermined value of the layer shear force. It prevents the relative displacement between the PC plate and the frame member due to the sliding frictional resistance between the beam member and the joint metal fitting, and is screwed to the PC plate so as to allow the relative displacement when the above predetermined value is exceeded. It has a different structure.

Further, according to claim 2, the PC plate, the frame member to which the PC plate is attached, and the displacement suppressing means arranged between the both and connecting the both to each other are provided, and the PC plate and the frame member are the PC plate. Are arranged to face each other in the direction orthogonal to the action direction of the layer shear force acting on, the displacement suppressing means, a plurality of anchor bolts provided so as to protrude from the PC plate, provided in the frame member, An anchor bolt is formed through a joint portion that is arranged through, and a nut that is screwed into the anchor bolt, the joint portion is fixed to the frame member,
Joint fittings slidably contacting the sliding parts of the PC plate, and one or more auxiliary members stacked on the fittings so as to slidably contact the sliding parts of the PC plate independently of each other. A stopper surface is formed on the auxiliary metal fitting so that the layer shearing force is sequentially transmitted from the joint metal fitting to the adjacent auxiliary metal fitting when the inner metal fitting moves and hits the auxiliary metal fitting. Along with this auxiliary metal fitting, a long hole that allows relative displacement of the anchor bolt in the acting direction of the layer shearing force is formed, and the nuts of the anchor bolts for mounting the joint metal fitting and the auxiliary metal fitting are Up to the prescribed value of, the relative displacement between the PC plate and the frame member is prevented from occurring due to the sliding frictional resistance between the above-mentioned metal fittings and the sliding portion, and when the prescribed value is exceeded, the relative displacement is permitted to occur. With being tightened, Respectively constructed as has been tightened so as to correspond to the story shear of different values.

According to a third aspect of the present invention, in the second aspect, the auxiliary metal fitting is formed long in the acting direction of the layer shearing force, and another auxiliary metal fitting or a joint metal fitting adjacent to one side is relatively moved in the intermediate direction at the intermediate direction. A recess for accommodating as much as possible is formed, and an inner surface of the recess constitutes a stop surface.

In claim 4, according to claim 2 or claim 3,
One of the gaps between the end surface of the fitting and the abutment surface of the auxiliary fitting adjacent to this fitting, and the gap between the end surface of this auxiliary fitting and the abutment surface of another auxiliary fitting adjacent to this auxiliary fitting, or Both were configured to be filled with a shock absorbing member.

According to the present invention, there is provided a PC plate, a frame member to which the PC plate is attached, and displacement restraint means arranged between the two members and connecting the both members to each other. The PC plate and the frame member act on the PC plate. Are arranged to face each other in a direction orthogonal to the acting direction of the layer shearing force, and the displacement suppressing means comprises a force applying means and a pressure control means for controlling the operation of the force applying means. The pressure control means, the relative displacement in the acting direction of the layer shear force between both the PC plate and the frame member, or the acting force and the acting direction of the force applying means so that the relative external force in the acting direction becomes zero. Configured to control and.

In a sixth aspect, in the fifth aspect, the force applying means is composed of a pair of hydraulic cylinders, and an anchor bolt is provided on the PC plate so as to project therefrom, and the anchor bolt penetrates the joint fitting fixed to the frame member. By doing the above PC
The plate and the frame member are connected to each other, and the joint fitting is formed with an elongated hole that allows the anchor bolt to move in the working direction of the layer shear force, and the joint fitting and the hydraulic cylinder are The pressing force from the pair of hydraulic cylinders is arranged so as to act on the joint fitting in directions opposite to each other in the acting direction.

According to a seventh aspect, in the fifth aspect, the force applying means is composed of a pair of hydraulic cylinders, and the PC plate and the skeleton member have the hydraulic cylinder fixed to one side and a protrusion formed on the other side. The protrusion and the hydraulic cylinder are arranged such that the pressing forces from the pair of hydraulic cylinders act on the protrusion in directions opposite to each other in the acting direction.

[Action]

According to the configuration of claim 1, when the layer shear force acts on the frame member due to an earthquake or the like, the sliding friction resistance between the sliding portion and the press beam member and the joint metal fitting is increased until the layer shear force reaches a predetermined value. The frame member and the PC plate are integrated by the force, and the PC plate effectively functions as a resistance element against the layer shear force. On the other hand, when a layer shear force of a predetermined value or more acts, relative displacement occurs between the PC plate and the frame member, and due to this, an excessive force acts on the PC plate and the PC plate is destroyed. The energy of the shearing force is converted into thermal energy and consumed by the sliding of the sliding part, the presser beam member and the joint fitting at this time, and the damping action against the vibration such as earthquake is caused. Is demonstrated.

According to the structure of the second aspect, the relative displacement between the joint metal fitting and the PC plate and the relative displacement between the auxiliary metal fitting and the PC plate are generated according to the layer shear forces of different magnitudes. Therefore, when a relatively small layer shear force is applied, only the relative displacement between the joint fitting and the PC plate occurs, so that the effect of reduction is obtained according to the small force. And the relative displacement of the PC plate causes a damping effect according to a large force. Also in this case, each bracket and PC
Until the relative displacement of the plate occurs, the frame member and the PC plate are integrated, and the PC plate effectively functions as a resistance element against the layer shear force.

According to the configuration of the above-mentioned claim 3, the structure in which the layer shear force is sequentially transmitted from the joint metal fitting to the adjacent auxiliary metal fitting is a simple structure in which the joint metal fitting or the auxiliary metal fitting is arranged in the recess formed in the auxiliary metal fitting. Can be achieved.

According to the structure of the above-mentioned claim 4, when the frame member and the PC plate are relatively moved, a damping action by so-called hysteresis damping due to the deformation of the shock absorbing member is exhibited. Therefore, the damping of the layer shear force is effectively performed by the damping action due to the friction between the metal fittings and the PC plate and the damping action due to the deformation resistance of the impact absorbing member. Further, if it is configured so that only the damping action of the shock absorbing member is exerted, it is possible to obtain a structure advantageous as a structure for damping minute vibrations such as wind.

According to the configuration of claim 5, when the layer shear force acts on the frame member due to an earthquake or the like, the relative displacement between the PC plate and the frame member, or the magnitude and direction of the action force that causes the relative displacement. Based on the above, the relative displacement amount or the force for eliminating the acting force is applied to the frame member or the PC plate by the pressing means.

According to the configurations of claims 6 and 7, it is possible to achieve the operation according to claim 5 with a simple configuration using a pair of hydraulic cylinders as pressurizing means.

〔Example〕

First Embodiment In FIGS. 1 and 2, the main body portion 11 of the PC plate 1 is formed in the same shape and size as the conventional one.
A mounting bracket 2 is attached to the lower portion of the PC plate 1 and an anchor bolt 3 is attached to the upper portion thereof so as to project to the rear surface 12 side (right side in FIG. 1, front side in FIG. 2).

The mounting bracket 2 has an anchor plate 22 on the front side (left side in FIG. 1) and two reinforcing ribs 23 on the rear side (right side in FIG. 1) of the body 21 having an L-shaped cross section. It is made by welding. The PC plate 1 with the anchor plate 22 welded to the anchor bar 13 or the main bar (not shown)
It is embedded inside, and is thereby fixed integrally to this PC version 1. A sliding member 4 is passed through the base of the protruding end 31 of the anchor bolt 3, and the sliding member 4 is attached to the PC plate 1 so that its surface 41 slightly projects from the inner surface 12 of the PC plate 1. Embedded fixed. As a result, the surface 41 is arranged parallel to the rear surface 12 of the PC plate 1.

On the other hand, a joint member 6 is attached to the beam member (frame member) 5 of the steel frame made of H-shaped steel on the outer surface side of the building. The fitting 6 is formed in an L-shape that is upright from the hanging piece portion 61 and the horizontal piece portion 62, and the horizontal piece portion 62 is welded to the upper surface of the beam member 5 so that the hanging piece portion is formed.
61 is provided so as to hang down on the outer surface side of the building. An elongated hole 611 (see FIG. 2) through which the protruding end 31 of the anchor bolt 3 penetrates is formed through the hanging piece 61, and the elongated hole 611 has a predetermined length on both sides in the longitudinal direction of the beam member 5. The joint metal fitting 6 and the anchor bolt 3 are configured to be relatively movable along the elongated hole 611.
The long hole 611 is set to a length sufficient to allow a predetermined value (for example, 1/200 of the floor height of the building) of displacement as an interlayer displacement to be described later.

The PC plate 1 is attached to the beam member 5 at the upper and lower portions thereof, the mounting metal fittings 2 are welded to the upper surface of the lower beam member 5a of the beam member 5 vertically adjacent to each other at the lower portion, and the anchor bolt 3 is attached to the upper beam at the upper portion. It is fixed to the joint metal fitting 6 of the member 5b by the nut 32, thereby forming an outer wall that shields between the upper and lower beam members 5a and 5b (see the dashed line in FIG. 4).

As shown in FIG. 3, the upper part of the PC plate 1 has a hanging piece 61.
With the front surface 612 and the surface 41 of the sliding member 4 in contact with each other, they are pre-tightened with a predetermined tightening torque by the nut 32 in a direction in which they are in close contact with each other, and thereby the position is fixed to the beam member 5b. The nut 32 is attached to the front surface of the hanging piece 61 up to a predetermined value in the layer shear force Q (see FIG. 2) acting on the beam member 5 when an earthquake occurs.
Due to the sliding frictional resistance force between the 612 and the surface 41 of the sliding member 4, the acting direction of the layer shear force (left and right direction in FIG. 2)
On the other hand, the tightening torque is set so that the PC plate 1 and the beam member 5b exert an axial compressive force to the extent that the relative displacement is prevented from occurring. That is, the front surface 612 of the joint fitting 6 is pressed against the front surface 41 of the sliding member 4 and a surface pressure corresponding to the tightening force torque acts between them, and a contact obtained by multiplying the surface pressure and the friction coefficient between the two is applied. The nut 32 is tightened so that the frictional resistance becomes equal to a predetermined layer shearing force Qy (see FIG. 6) described later.

That is, as shown in FIG. 5, when the layer shearing force Q acts on the upper beam member 5b, the lower portion of the PC plate 1 is moved to the lower beam member.
The PC plate 1 itself tends to resist the layer shearing force Q due to the resistance to deformation in the plane direction because it is rigidly connected to the 5a by welding. However, since the upper portion of the PC plate 1 is attached by friction bonding between the hanging piece portion 61 and the sliding member 4, when a layer shearing force exceeding the frictional resistance force acts, both contact surfaces slip. The upper beam member 5b
Moves in the acting direction of the layer shear force, and a relative displacement (interlayer displacement) δ occurs between the two.

This will be explained based on FIG. 6 showing the relationship between the bed shear force and the bed displacement δ.
During the period up to Qy, the PC plate 1 itself deforms and the interlayer displacement of δ ₁ occurs together with the beam member 5b (see line OA in FIG. 6).
However, when the layer shear force value Qy is exceeded, the layer shear force becomes larger than the friction resistance force between the hanging piece portion 61 and the sliding member 4, so that slippage occurs between them. In this case, only the beam member 5b moves to δ ₂ and is in balance with the resistance of the steel frame assembly itself (see line AB in FIG. 6). And when the layer shear force acts in the opposite direction,
As indicated by the line segment BC in FIG. 6, the change in the interlayer displacement is also in the opposite direction, and then the process of the line segment AB is repeated through the line segments DC and DE. PC version 1 depending on the inclination of the line segment OA
The spring constant K _{0 of} is represented.

In this embodiment, the rigidity of the mounting portion is set so that the spring constant K ₀ is about 10 times or more the value of the PC plate in the case of the conventional mounting portion structure shown in FIG. For example, in the case of the above-mentioned conventional mounting structure, the spring constant per PC plate is approximately 3000 kg / cm or less (see the measurement example of FIG. 28 described later), while in this embodiment it is 30000 kg / cm. The rigidity of the mounting portion is set as described above.

In a building in which the PC plate 1 is attached to the beam member 5 by the above-described structure of the attachment portion, the upper beam member 5b due to seismic motion
When the layer shear force Q acts on, the layer shear force value becomes Qy.
Until reaching (see Fig. 6), the frictional force of the joint fitting 6 and the sliding member causes the beam member 5 which is a steel framework to be integrated with the PC plate 1, whereby the PC plate 1 is sheared by the above layers. It effectively functions as a resistance element against force.
As a result, it is possible to obtain the rigidity effect, that is, the effect of shortening the natural vibration period T of the building to reduce the seismic response (displacement) of the building (FIG. 7).

On the other hand, when the layer shear force value exceeds the above Qy, slippage occurs between the joint fitting 6 and the sliding member 4 (upper beam member 5b and PC plate 1).
(Relative displacement) occurs, which prevents the PC plate 1 from being destroyed. Moreover, since the energy of the layer shear force is converted into thermal energy and consumed by the sliding of the fitting 6 and the sliding member 4, a damping action against vibration such as an earthquake is exhibited. Become.

Therefore, in the conventional structure where the mounting part structure allows free interlaminar displacement of the beam member, the PC plate is less available as an opposing element to the layer shear force. However, in the structure according to this embodiment, as described above, the PC plate 1 effectively functions as the resistance element. Therefore, the amount of the steel frame framing corresponding to the rigidity of the PC plate 1 is increased. It is possible to reduce the rigidity. Therefore, it is possible to reduce the required cross section of the steel frame, and as a result, it is possible to reduce the construction cost of the entire building.

Moreover, when a relative displacement occurs between the joint fitting 6 and the sliding member 4, the sliding movement of the joint fitting 6 and the sliding member 4 exerts a damping action against vibration such as an earthquake as described above.
This has the advantage that vibration can be suppressed early.

Mounting bracket 2 which is the lower mounting portion in the first embodiment
Another aspect of the above will be described below.

I. The mounting bracket 2 has two reinforcing ribs 23,
However, the number is not limited to this, and may be one, three, or more.

B. The mounting bracket 2 is formed by welding the angle member and the plate member together, but is not limited to this, and may be integrally formed by casting, for example.

C. As shown in FIG. 8, the mounting member 2a may be configured such that the anchor plate 22a and the reinforcing rib 23a are formed longer than those shown in FIG. As a result, the lower beam member 5a and the PC plate 1a can be connected more firmly. Further, in this case, by attaching the face plates 24a orthogonal to each other to the reinforcing ribs 23a, the mounting bracket 2
The PC plate 1a may be prevented from falling sideways at the attachment portion between the a and the lower beam member 5a.

D. As shown in FIG. 9, a main body portion 11b of the PC plate 1b and a portion 23b corresponding to the reinforcing rib 23a shown in FIG. 8 are integrally formed, and the metal fitting 2b is embedded in the lower portion of the reinforcing portion 23b.
The lower beam member 5a and the lower beam member 5a may be welded to each other. The thickness of the reinforcing portion 23b, that is, the range in which the PC plate 1b is formed in the width direction may be a part or the entire width of the PC plate 1b.

Second Embodiment FIGS. 10 and 11 show a second embodiment of the upper mounting portion between the upper beam member 5b and the PC plate 1c. In each of the second to fifth embodiments described below, the lower mounting portion has the same structure as that of the first embodiment, and only the mounting portion is changed.

The PC plate 1c in the second embodiment has one joint fitting.
A pair of anchor bolts 3c are provided at a predetermined interval with respect to 6c, and a sliding member 4c is embedded in the central portion between the pair of anchor bolts 3c. Above anchor bolt
3c penetrates both ends of the pressing beam member 7, and the pressing beam member 7 is attached by a nut 32. A pressing portion 71 is formed at the center of the pressing beam member 7 so as to project toward the PC plate 1c, and the hanging piece portion 61c of the joint metal fitting 6c is sandwiched between the pressing portion 71 and the sliding member 4c. There is. Ie nut 3
By tightening 2, the pressing portion 71 presses the hanging piece portion 61c toward the sliding member 4c side, whereby both the hanging piece portion 61c and the sliding member 4c are subjected to a predetermined surface pressure. Are in close contact with each other.

Also in such a structure of the second embodiment, it is possible to obtain the same effects as those of the structure of the first embodiment. That is, until the layer shear force reaches a predetermined value, the sliding member 4c
And the frictional force of the hanging piece 61c and the upper beam member 5b and PC
Since the plate 1c is integrated with the plate 1c, the PC plate 1c effectively acts as a resistance element against the layer shearing force, whereby a rigidity effect is obtained. On the other hand, if the layer shear force above a certain value works,
Relative displacement occurs between the PC plate 1c and the upper beam member 5b, which prevents the PC plate 1c from being broken and causes the sliding member 4c to move.
The sliding action of the hanging piece 61c exerts a damping action against vibration.

Third Embodiment A third embodiment is shown in FIGS. 12 to 14. In the third embodiment, the joint portion is composed of a joint metal fitting 6d welded to the beam member 5b and an auxiliary metal fitting 7d. The PC plate 1d includes an anchor bolt 30d for the joint metal fitting 6d and the auxiliary metal fitting. A pair of anchor bolts 31d for 7d and sliding members 40d, 41d are provided at the bases of the anchor bolts 30d, 31d.

The auxiliary metal fitting 7d is a plate-shaped member formed long in the acting direction of the layer shearing force (left and right direction in FIG. 13 and FIG. 14), and the joint metal fitting 6d is movable at the middle portion in the acting direction. The recess 71d is accommodated, and the elongated holes 72d through which the anchor bolt 31d penetrates are formed at both ends. In the recess 71d, the sliding member 40d
Is a long hole 71 that is arranged so as to be relatively movable in the action direction.
1d is formed penetratingly, and both end faces (stop faces) 712d of the recess 71d in the working direction are formed so as to stop with the joint fitting 6d.

That is, when the layer shear force first acts on the sliding surface between the joint metal fitting 6d and the sliding member 40d, the joint metal fitting 6d slips and hits the end surface 712d, and then the layer shear force is applied to the auxiliary metal fitting 7d. It is configured to be transmitted via this to act on the sliding surface between the auxiliary metal fitting 7d and the sliding member 41d. The nut 32d of the anchor bolt 30d and the nut 33d of the anchor bolt 31d are tightened with different tightening torques, so that two types of frictional resistance different from each other are generated. For example, the tightening torque of the nut 32d of the joint metal fitting 6d may be set to a frictional resistance force corresponding to small and medium earthquakes, and the tightening torques of the nuts 33d on both sides may be set to a frictional resistance force corresponding to a large earthquake.

According to this structure, the slip between the joint metal fitting 6d and the sliding member 40d and the slip between the auxiliary metal fitting 7d and the sliding member 41d occur in accordance with the layer shear forces of different magnitudes. Therefore, when a relatively small shear force acts (small and medium earthquake motion), slippage occurs between the joint fitting 6d and the sliding member 40d, so that an effect of reducing the force corresponding to the small force is obtained, and a large shear force ( When a large earthquake motion) acts, slippage is further generated between the auxiliary metal fitting 7d and the sliding member 41d, and a damping effect corresponding to a large force is obtained. Also in this case, the beam member 5b and the PC plate 1d are integrated into the PC plate 1d until the sliding occurs between the metal fittings 6d, 7d and the sliding members 40d, 41d.
Effectively functions as a resistance element against the layer shearing force, which provides a rigidity effect.

That is, in the structures of the first and second embodiments, slippage of the PC plate occurs with reference to the set single layer shear force value Qy, so that, for example, a seismic motion of either small or medium earthquakes or large earthquakes is generated. Although the damping action can be exerted only against the above, according to the structure of the third embodiment, the damping action can be exerted against a plurality of seismic motions as described above. Therefore, this point is more advantageous than the first or second embodiment.

Other aspects of the third embodiment will be described below.

I. In the third embodiment, the joint portion is configured by combining one auxiliary metal fitting 7d in addition to the joint metal fitting 6d, but the invention is not limited to this. For example, as shown in FIG. 15, two auxiliary metal fittings 7d, 7
It may be configured by combining e, or three or four auxiliary metal fittings. In this case, it is possible to obtain a damping effect against three types, four types, or five types of earthquake motions.

B. A vibration absorbing member made of a viscoelastic material or a plastic material may be filled in the gap between the joint fitting 6d and the recess end surface 712d of the auxiliary fitting 7d in the third embodiment. Also, instead of simply filling, as shown in Fig. 16, for example, the fitting 6d
The vibration absorbing member 81 by the position fixing plate 61d on the side
May be attached to the joint metal fitting 6d side, and the vibration absorbing member 81 may be disposed so that the tip edge of the vibration absorbing member 81 contacts the recess end surface 712d. In this case, by making the tightening torque of the nut 32d relatively small, or by tightening it through a thrust bearing, the vibration absorbing member for the vibration of a small amplitude can be obtained.
A damping effect due to the deformation resistance of 81 can be obtained, and it is possible to prevent vibration of the building due to wind or movable mechanical equipment.

Fourth Embodiment A fourth embodiment is shown in FIGS. 17 and 18.
The PC plate 1f according to the fourth embodiment is provided with a pair of reaction force portions 14f so that the reaction force portions 14f project toward the beam member 5b.
The bases of the hydraulic cylinders 91 are fixed in position so that the pair of hydraulic cylinders 91 face each other, and the tip ends of the rods of the hydraulic cylinders 91 are brought into contact with both side ends of the joint fitting 6. The hydraulic cylinders 91 on both sides of the joint fitting 6 are connected to a hydraulic pump 92 as shown in FIG. 19, and the hydraulic pump 92 is controlled by the control means 93. The control means 93 is connected to the interlayer displacement sensor 94, and controls the drive of the hydraulic pump 92 so as to cancel the relative displacement based on the relative displacement from the interlayer displacement sensor 94.

According to this 4th Example, the force which resists interlayer displacement can be actively added, and the passive action by the frictional resistance force of the joint metal fitting 6 and the sliding member 4 is assisted, and vibration of a building is assisted. It can be reduced more effectively. That is, up to a predetermined value of the layer shear force due to an earthquake or the like, the PC plate 1f and the beam member 5b are integrated by the frictional resistance force of the joint fitting 6 and the sliding member 4, whereby a rigidity effect can be obtained. Then, when the layer shear force exceeds the predetermined value and a relative displacement occurs between the PC plate 1f and the beam member 5b, a pressing force of the hydraulic cylinder 91 acts in a direction to eliminate the displacement, thereby causing a seismic motion. A damping effect is exhibited. At this time, since the sliding action of the joint fitting 6 and the sliding member 4 also exerts the damping action against the earthquake motion, the damping action effectively suppresses the earthquake motion.

Other aspects of the fourth embodiment will be described below.

I. In the fourth embodiment described above, the hydraulic pump 92 is controlled based on the interlayer displacement detected by the interlayer sensor 94, but the present invention is not limited to this, and the relative pressure is calculated based on the interlayer shear force detected by a sensor such as a load cell. The hydraulic pump may be controlled to counteract the force.

B. In the fourth embodiment, one joint fitting is sandwiched from both sides by a pair of hydraulic cylinders, but the invention is not limited to this. For example, as shown in FIG. 20, the base portions of the fittings are oriented so as to face opposite directions. A pair of hydraulic cylinders 91a fixed to the reaction force portion 14g of the PC plate 1g are arranged between the pair of joint fittings 6, and the rod tips of the pair of hydraulic cylinders 91a are attached to the end surfaces of the joint fittings 6 facing each other. You may comprise so that it may contact.

C. In the fourth embodiment, the nut and the anchor bolt may be simply connected. According to this, a force is applied to the joint fitting by the pair of hydraulic cylinders so as to directly reduce the interlayer displacement or the layer shear force, so that a damping effect on the earthquake motion is obtained. That is, the first
In the structure of the embodiment, the damping action is exerted by the sliding of the joint fitting and the sliding member, whereas in the above-mentioned structure, the damping action is exerted by the pressure applied by the hydraulic cylinder.

D. Although the hydraulic cylinder is used as the force applying means in the fourth embodiment, the invention is not limited to this, and an air cylinder or a mechanical jack may be used.

Fifth Embodiment FIG. 21 and FIG. 22 show a fifth embodiment.
In the PC plate 1h in the fifth embodiment, the pressure acting portion 15h is provided integrally with the PC plate 1h so as to project to the beam member 5b side. The beam member 5b has a pair of reaction force portions 51h.
Are welded at a predetermined interval, and a pair of hydraulic cylinders 91b are fixed to the reaction force portion 51h so as to face each other, and the force applying portion 15h and the pair of hydraulic cylinders 91b are connected to each other by a rod tip of the hydraulic cylinder 91b. Thus, the force acting portion 15h is arranged so as to be sandwiched.

The pair of hydraulic cylinders 91b in the fifth embodiment are
The hydraulic pump has a control means 93 as in the fourth embodiment.
(See FIG. 19), so that a force that directly reduces the interlayer displacement or the layer shear force acts on the force acting portion 15h. Thus, the vibration of the building can be directly reduced by using the hydraulic cylinder 91b as a displacement suppressing means.

Sixth Embodiment A sixth embodiment is shown in FIGS. 23 and 24.
The sixth embodiment shows a case where the PC plate is attached to the beam members 5c and 5d as a partition wall, not as an outer wall. In this case, the upper beam member 5c is welded so that the joint plate 6i hangs on its lower end surface, and the PC plate 1i
, A set of two anchor plates 3i is integrally attached to the upper end of the anchor plate.
It is attached by screwing a nut 33i into a bolt 32i penetrating an elongated hole 31i formed through 3i. The nut 33i is tightened with a predetermined tightening torque as in the first embodiment.

Further, the lower beam member 5d and the PC plate 1i are integrally embedded in the PC plate 1i, and the mounting bracket 2i protruding from the lower end surface is rigidly connected to the lower beam member 5d by welding. .

In the sixth embodiment, even when the PC plate 1i is attached to the beam members 5c and 5d as a partition wall, up to a predetermined layer shear force value Qy (see FIG. 6), the steel frame shaft is not supported against this layer shear force. In addition to the set, the PC plate 1i also effectively resists, and when the layer shear force value Qy is exceeded, slippage occurs between the joint plate 6i and the anchor plate 3i.

That is, in the sixth embodiment, the PC version 1i as a partition wall
In the attachment portion with the beam members 5c, 5d, the same effect as that of the first embodiment, that is, the rigidity effect against the layer shear force such as an earthquake and the damping effect against the vibration can be obtained.

Seventh embodiment Figures 25 and 26 show a PC plate 1j as a partition wall.
And another example of the structure of the attachment portion of the beam member 5e
An example is shown. This seventh embodiment is an outer wall
It shows a case corresponding to the third embodiment (see FIGS. 13 and 14) in the case of using the PC version, and shows a configuration that exerts a damping effect on a plurality of types of seismic motions.

In the seventh embodiment, the joint portion is composed of a joint metal fitting 6j welded to the beam member 5e and an auxiliary metal fitting 7j, and
The PC plate 1j is integrally provided with an anchor plate 3j to which the both metal fittings 6j and 7j are attached.

The auxiliary metal fitting 7j is a plate-shaped member that is formed long in the acting direction of the layer shearing force (left and right direction in FIG. 25 and FIG. 26), and the joint metal fitting 6j can be moved in the intermediate direction at the intermediate portion thereof. A recess 71j for accommodating is formed. Further, the anchor plate 3j is formed with elongated holes 32j, 33j through which three bolts 30j, 31j for connecting the joint metal fitting 6j and the both ends of the auxiliary metal fitting 7j are arranged. Then, a nut 34j is screwed into the bolt 30j and a nut 35j is screwed into the bolt 31j, and these nuts 34j and 35j are tightened with different predetermined tightening torques.

In the seventh embodiment, when the layer shearing force of a predetermined value or more first acts on the contact surface between the joint metal fitting 6j and the anchor plate 3j, the joint metal fitting 6j slides and hits the end surface of the recess 71j of the auxiliary metal fitting 7j. Next, the layer shearing force is transmitted to the contact surface between the auxiliary metal fitting 7j and the anchor plate 3j via the auxiliary metal fitting 7j. Therefore, according to the seventh embodiment, as in the third embodiment, it is possible to obtain the damping effect for two types of seismic motions. Further, by using a vibration absorbing member such as viscoelastic or plastic material, it is possible to obtain a damping effect even for vibration of a small amplitude.

Eighth Embodiment FIG. 27 shows an eighth embodiment corresponding to the fourth embodiment (see FIG. 20) when the PC plate 1i is used as the partition wall and is used as the outer wall. That is,
In the eighth embodiment, a pair of hydraulic cylinders 91c, the rod tips of which contact the anchor plate 3i, between the mounting portions on both upper sides of the PC plate 1i which are connected to each other by the anchor plate 3i and the joint plate 6i. As described above, the pair of hydraulic cylinders 91c are arranged in mutually opposite directions and are fixed to the reaction force portion 51f provided on the upper beam member 5j.

Then, an unillustrated hydraulic pump connected to the hydraulic cylinder 91c causes interlayer displacement in the anchor plate 3i,
Alternatively, it is possible to obtain the same effect as that of the fourth embodiment at the mounting portion of the PC plate 1i as the partition wall and the beam member 5f by controlling the operation so as to cancel the layer shearing force acting on the anchor plate 3i. You can That is, for example, when a relative displacement occurs between the PC plate 1f and the beam member 5b due to a layer shearing force such as an earthquake, a pressing force of the hydraulic cylinder 91 acts in a direction to eliminate the displacement, thereby damaging the earthquake motion. The action is demonstrated.

Other aspects common to the first to eighth embodiments will be described below.

I. In the above-described embodiment, the case where one anchor bolt is arranged through one elongated hole is shown, but the present invention is not limited to this. For example, two or more anchor bolts are arranged through one elongated hole. May be.

B. In the above embodiment, one set of the elongated hole and the anchor bolt is provided for one mounting portion, but the present invention is not limited to this. For example, two or more sets are provided for one mounting portion. You may do it.

C. In the above embodiment, the example in which the nut is simply screwed into the anchor bolt with a predetermined tightening torque is shown.
Not limited to this, for example, a spring washer may be interposed, a split pin may be inserted, or a double nut may be used to prevent rotation of the nut. Alternatively, the nut may be tightened with a predetermined tightening torque, and then the nut and the anchor bolt may be welded to prevent loosening.

D. In the above embodiment, the joint fitting is configured by using an L-shaped member, but the present invention is not limited to this, and may be configured by using, for example, a channel member.

E. In the above embodiment, the mounting bracket at the bottom of the PC plate is rigidly connected by welding to the lower beam member, but the invention is not limited to this, and the same mounting structure as the upper part is applied to the lower part of the PC plate. Good.

[Calculation example]

The mounting structure according to the present invention and the conventional mounting structure (first
(Fig. 31) was used to calculate the elastic response of two 17-story steel frame buildings using typical seismic waves (El Centro NS waves). The mounting structure according to the first embodiment shown in FIG. 1 was used as the mounting structure according to the present invention, and the layer shear force value Qy was set to 30000 kg. For both PC plates, a general PC curtain wall member with a width of 1.7 m, a height of 3.6 m, and a thickness of 15 cm was assumed. In addition, in calculating the elastic response, the spring constant of the PC plate in the case of the conventional mounting structure was obtained by a load test. As a result, the spring constant in the case of the conventional mounting structure is 3000 per PC plate as shown in Fig. 28.
It was kg / cm. Also, when the spring constant in the case of the mounting structure of the present application is calculated, it is approximately 30000k per PC plate.
It becomes g / cm. The result of the elastic response calculation is shown in FIG.
According to this result, in the conventional mounting structure, the top displacement of the building is affected by the seismic acceleration as shown by the broken line X in FIG. It increases almost in proportion. The elasticity limit is exceeded at about 140 Gal (see the dashed line Y in Fig. 1). On the other hand, in the mounting structure of the present application, as shown by the curve Z in the figure, at 300 GAL corresponding to a large earthquake, the top displacement of about 1/2 of the elastic limit is sufficient, and the elastic response is almost 1/100. It is 4.
The top displacement in the conventional mounting structure is the elastic response value (see the broken line X) as shown by the two-dot chain line X'in FIG.
The response value is almost the same as, and the seismic effect due to this structure is not recognized. Therefore, it can be said that the mounting structure of the present application can reduce the vibration of the building more than the conventional mounting structure.

From this effect, in the design example with the mounting part structure of the present application,
The steel frame weight of the steel frame can be reduced by almost 5%.

FIG. 30 shows a constant spring constant in the mounting structure of the present application.
The seismic response calculation results when the layer shear force value Qy set for K ₀ is changed are shown. According to this,
It can be seen that there is a Qy value (Qyo) that minimizes the displacement. Therefore, the layer shear force value corresponding to the spring constant K ₀ setting
Qy should be set as the above Qyo.

〔The invention's effect〕

As described above, the PC according to claim 1 of the present invention
According to the plate mounting structure, by effectively utilizing the rigidity of the PC plate as a resistance element against vibrations such as earthquakes, it is possible to reduce the strength of the frame member by that amount, which reduces the required cross section of the frame member. And cost reduction can be achieved. Moreover, it is possible to exert the necessary seismic strength with the PC plate and the frame members as a whole with the PC plate attached, and between the PC plate and the frame members for layer shear forces above a predetermined value. Due to slippage,
It is possible to reliably prevent an excessive external force from acting on the PC plate, and it is possible to reliably prevent the damage.
Moreover, since the slippage between the PC plate and the frame member exerts a damping action against vibration such as earthquake motion, the vibration transmitted to the building can be suppressed early.

According to the PC plate mounting portion structure of the second aspect, the relative displacement between the joint metal plate and the PC plate and the relative displacement between the auxiliary metal plate and the PC plate are generated according to the layer shearing forces of different magnitudes. Therefore, it is possible to effectively exhibit a damping action in response to a plurality of types of vibrations such as earthquake motions and suppress the vibrations.

According to the PC plate mounting portion structure of claim 3, claim 2
In the structure described, it is possible to achieve a structure in which the layer shear force is sequentially transmitted from the joint fitting to the adjacent auxiliary fitting with a simple structure.

According to the PC plate mounting portion structure of claim 4,
Alternatively, in the structure described in 3, the damping action due to the friction between the metal fittings and the PC plate, or alternatively, the damping action due to the deformation resistance of the shock absorbing member is exhibited. Therefore, vibrations can be suppressed more effectively by exhibiting these actions together. On the other hand, if only the damping action of the shock absorbing member is exerted, it becomes an advantageous structure as a structure for damping the micro-vibration such as wind.

According to the PC plate mounting portion structure described in claim 5, the force for extinguishing this force is applied by the pressing means based on the magnitude of the layer shear force, etc., so that vibrations such as earthquakes can be more reliably achieved. Can be suppressed.

According to the PC plate mounting portion structure of the sixth or seventh aspect, the operation according to the fifth aspect can be achieved with a simple configuration using the pair of hydraulic cylinders as the pressurizing means.

[Brief description of drawings]

1 is a cross-sectional explanatory view taken along the line AA in FIG. 2, FIG. 2 is a rear explanatory view showing a first embodiment of the mounting portion structure of the present invention, and FIG. 3 is an upper mounting portion in FIG. Enlarged sectional view of the fourth
Figure is a front explanatory view of the steel frame of the building, Fig. 5 is a front explanatory view schematically showing the behavior when a layer shear force is applied to one PC plate, and Fig. 6 is a restoring force characteristic of the PC plate Explanatory drawing showing
FIG. 8 is a diagram showing the relationship between the natural vibration period of the building and the seismic response, FIG. 8 is a sectional explanatory diagram showing another aspect of the lower mounting portion of the first embodiment, and FIG. 9 is a sectional explanatory diagram showing still another aspect. , FIG. 10 is a sectional explanatory view taken along the line BB of FIG. 11, and FIG.
An embodiment corresponding to FIG. 3, FIG. 12 is an equivalent view of FIG. 3 showing a third embodiment, FIG. 13 is an explanatory cross-sectional view taken along the line CC of FIG. 12, and FIG. 14 is FIG. 15 is a sectional view taken along line D-D of FIG. 15, FIG. 15 is a view corresponding to FIG. 14 showing another aspect of the third embodiment, and FIG. 16 is an enlarged sectional explanation of the concave end face of the auxiliary metal fitting showing another aspect. FIG. 17, FIG. 17 is a view corresponding to FIG. 13 of the fourth embodiment, and FIG. 18 is a cross-sectional explanatory view taken along the line EE of FIG.
FIG. 19 is a front explanatory view showing the control of the hydraulic cylinder of the fourth embodiment, FIG. 20 is a view corresponding to FIG. 18 showing another aspect of the fourth embodiment, and FIG. 21 is a PC plate of the fifth embodiment. 22 is a cross-sectional explanatory view taken along the line FF of FIG. 21, and FIG.
FIG. 24 is a front explanatory view showing an embodiment, FIG. 24 is a sectional explanatory view taken along the line GG of FIG. 23, FIG. 25 is a front explanatory view showing a seventh embodiment, and FIG. 26 is HH of FIG. Cross-sectional explanatory view at the line,
Fig. 27 is a front explanatory view showing the eighth embodiment, Fig. 28 is a relationship diagram between horizontal load and horizontal displacement, Fig. 29 is a relationship diagram between earthquake acceleration and top displacement, and Fig. 30 is layer shear. FIG. 31 is a diagram showing the relationship between force and displacement of the top portion, and FIG. 31 is a diagram corresponding to FIG. 1 showing a conventional mounting portion structure. 1,1a-1j ... PC version, 2,2a-2i ... Lower mounting bracket, 3,3a-3c ...
Anchor bolts, 4,4c, 40d, 41d ... Sliding members, 5, 5a-5e ...
Beam members, 6,6c, 6d ... Fittings, 6i, 6j ... Fitting plates,
7d, 7e… Auxiliary metal fittings, 30d, 31d… Anchor bolts, 30j, 31j,
32i… Bolts, 32, 32d, 33d, 33i, 34j, 35j… Nuts, 31i, 7
2d, 611, 711d ... elongated hole, 81 ... shock absorbing member, 91, 91a to 91c ...
Hydraulic cylinder, 93 ... Control means, 712 ... End surface of recess.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Kano 5-14-19 Yakeyama Chuo, Kure City, Hiroshima Prefecture (56) Reference JP-A-1-146081 (JP, A) JP-A-2-112569 (JP , A) Actual opening 3-78811 (JP, U) Actual opening 62-203312 (JP, U) Actual opening 53-18648 (JP, Y2)

Claims (7)

(57) [Claims] 1. A PC plate and a frame member for mounting the PC plate,
It has a displacement suppressing means arranged between the two and connecting the both, and the PC plate and the frame member are arranged to face each other in a direction orthogonal to the action direction of the layer shearing force acting on the PC plate. The displacement suppressing means is composed of a sliding portion protrudingly formed on the PC plate, a joint fitting fixed to the frame member, and a press beam member screwed to the PC plate, and the press beam member is It is made of an elastic material, and its middle part is placed in contact with the fitting in the state where the fitting is pressed against the sliding part, and the sliding part and the presser are held up to a predetermined value of the layer shear force. It prevents the relative displacement between the PC plate and the frame member due to the sliding frictional resistance between the beam member and the joint metal fitting, and is screwed to the PC plate so as to allow the relative displacement when the above predetermined value is exceeded. PC that is characterized by
Plate mounting structure. 2. A PC plate and a frame member for mounting the PC plate,
It has a displacement suppressing means arranged between the two and connecting the both, and the PC plate and the frame member are arranged to face each other in a direction orthogonal to the action direction of the layer shearing force acting on the PC plate. , The displacement suppressing means, a plurality of anchor bolts provided so as to protrude from the PC plate, a joint portion provided in the frame member, the anchor bolts are arranged through,
It is composed of a nut screwed to the anchor bolt,
The joint portion is fixed to the frame member, and the joint fitting slidably in contact with the sliding portion of the PC plate is slidably in contact with the sliding portion of the PC plate independently of each other. It is composed of one or a plurality of auxiliary metal fittings stacked on the joint metal fitting, and when the inner fitting metal fitting moves and hits the auxiliary metal fitting, the layer shearing force is sequentially applied from this joint metal fitting to the adjacent auxiliary metal fittings. While the stop surface is formed so as to be transmitted, the auxiliary metal fitting has a through hole formed to allow relative displacement of the anchor bolt in the acting direction of the layer shear force.
The nuts of the anchor bolts to which the fittings and auxiliary fittings are attached have a relative displacement between the PC plate and the frame member due to the sliding frictional resistance between the fittings and the sliding portion up to a predetermined value of the layer shear force. PC plate mounting characterized in that it is tightened so as to prevent the occurrence of the above, and when the above specified value is exceeded, the relative displacement is allowed to occur and at the same time, it is tightened so as to correspond to layer shear forces of different values. Part structure. 3. The auxiliary metal fitting is formed to be long in the acting direction of the layer shearing force, and a concave portion for accommodating another auxiliary metal fitting or joint fitting adjacent to one side in the middle portion thereof so as to be relatively movable in the acting direction. 3. The PC plate mounting portion structure according to claim 2, wherein the PC plate mounting portion structure is formed, and the stopper surface is constituted by the inner surface of the recess. 4. A gap between an end surface of the joint fitting and an abutting surface of an auxiliary fitting adjacent to the joint fitting, and an end surface of the auxiliary fitting and a stopping surface of another auxiliary fitting adjacent to the auxiliary fitting. The PC plate mounting portion structure according to claim 2 or 3, wherein one or both of the gaps are filled with a shock absorbing member. 5. A PC plate and a frame member for mounting the PC plate,
It has a displacement suppressing means arranged between the two and connecting the both, and the PC plate and the frame member are arranged to face each other in a direction orthogonal to the action direction of the layer shearing force acting on the PC plate. The displacement suppressing means is composed of a force applying means and a pressure controlling means for controlling the operation of the force applying means, and the pressure controlling means is a layer shear force between both the PC plate and the frame member. PC plate mounting characterized by being configured to control the acting force and the acting direction of the force applying means so that the relative displacement in the acting direction or the relative external force in the acting direction becomes zero. Part structure. 6. A pressurizing means is composed of a pair of hydraulic cylinders, an anchor bolt is provided on the PC plate so as to project, and the anchor bolt penetrates a joint fitting fixed to a frame member to provide the PC. The plate and the frame member are connected to each other, and the joint fitting is formed with an elongated hole that allows the anchor bolt to move in the working direction of the layer shear force, and the joint fitting and the hydraulic cylinder are 6. The PC plate mounting portion structure according to claim 5, wherein the pressing force from the pair of hydraulic cylinders is arranged so as to act on the joint fitting in directions opposite to each other in the acting direction. 7. The force applying means is composed of a pair of hydraulic cylinders, and one of the PC plate and the frame member is fixed to the hydraulic cylinder and the other is formed with a protrusion. 6. The PC according to claim 5, wherein the hydraulic cylinders are arranged such that pressing forces from the pair of hydraulic cylinders act on the protrusions in directions opposite to each other in the acting direction. Plate mounting structure.