JPH1181504A - Internal wall structure with joint member interposed therebetween and fitting method of joint member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an internal wall structure with joint members interposed therebetween, which functions as a vibration isolation wall and sufficiently prevents fire spreading as a fireproof partition wall even when the internal wall with a slit is deformed at a large earthquake, in a building provided with a vibration isolation floor. SOLUTION: In a building provided with a vibration isolation floor 4, a horizontal slit 5 is formed at the middle of the internal wall 1 of the vibration isolation floor 4 to isolate the upper wall 6 of the slit 5 from the lower wall 7, and frame panels 8, 9 are fitted to the upper and lower ends of the upper and lower walls 6, 7 respectively. A joint member A is stuck to a fixed member B set to either one of the frame panels and put between both upper and lower frame panels 8, 9 like a sandwich.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an inner wall having a joint member interposed therebetween in a base-isolated building and a method of attaching the joint member to the inner wall.

[0002]

2. Description of the Related Art In a building having a seismic isolation floor, a large horizontal displacement may occur between an upper floor and an isolated floor during an earthquake. It is necessary to provide a slit in the inner wall of the seismic isolation floor in such a building, for example, an inner wall (fireproof wall) partitioned by fire such as an elevator hall or a core wall around a staircase. When a large horizontal displacement occurs in the slit on the inner wall due to the earthquake, there is a risk of fire spreading from the slit when a fire occurs.

[0003]

Conventionally, however, no clear processing structure for the slit portion has been developed to deal with earthquakes and fires. Although an expansion wall in which a flame-retardant thin plate is slightly or perpendicularly interposed in the slit part has been proposed, if a large displacement occurs during an earthquake, the thin plate may be damaged, causing a fire. It was difficult to sufficiently prevent the spread of fire. In the case where a thin plate needs to be replaced, it is very difficult to remove the thin plate.

[0004]

[Object of the present invention] The present invention has been made to solve the above-mentioned problems. In a building having a seismic isolation floor,
To provide a structure of an inner wall interposed with joint members that can function as a seismic isolation wall and sufficiently prevent a fire from spreading even if the inner wall having a slit is deformed during a large earthquake. is there.

[0005]

In order to achieve the above object, a structure of an inner wall of a seismic isolation building according to the present invention, in which a joint member is interposed, is provided in a building having a seismic isolation floor. A horizontal slit is provided in the middle of the slit, the upper wall and lower wall of this slit are insulated, and frame panels are attached to the upper and lower ends of the upper and lower walls, respectively, to a fixing member fixed to one of the frame panels. The joint member is fixed, and the joint member is sandwiched between the upper and lower frame panels.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. <A> Inner Wall 1 (FIGS. 1 and 2) The inner wall 1 is a fire-resistant or non-proof wall, such as an elevator hall or a core wall around a staircase room, which is used as a fire-resistant compartment for partitioning between rooms. In a building having a seismic isolation floor 4 provided with a seismic isolation device 3 in the center of a pillar 2, a horizontal slit 5 is provided in the middle of an inner wall 1 of the seismic isolation floor 4, and an upper wall 6 and a lower wall 7 of the slit 5 are provided. And is insulated. Therefore, the structure 1 above the seismic isolation floor 4
Since the seismic force is not transmitted to the inner wall 1 of 9, no crack is generated. In the figure, reference numeral 20 denotes a lower structure.

<B> Frame Panels 8, 9 (FIGS. 3 to 5) Each of the upper and lower frame panels 8, 9 is a panel formed by bending a nonflammable metal plate. They are arranged in series in the length direction. The upper frame panel 8 is attached to the lower end of the upper wall 6 of the slit section 5, and the lower frame panel 9 is attached to the upper end of the lower wall 7 via a rib plate 10 and a reinforcing bar 11, respectively. Since the frame panels 8 and 9 are provided above and below the slit portion 5 with an interval therebetween, the joint member A described later can be accurately mounted.

<C> Joint member A (FIGS. 1 to 5) The joint member A is attached between a pair of upper and lower frame panels 8 and 9 in the slit portion 5 of the inner wall 1, and the joint member A is provided at the time of an earthquake.
The upper and lower walls 6 and 7 have a seismic isolation function that easily deforms and follows when the upper and lower walls 6 and 7 are deformed. The structure of the joint member A is such that the side and bottom of the core material 12 of rock wool felt are made of a non-combustible material 13
The outer surface is reinforced with a reinforcing film 14 such as an aluminum glass cloth, and the upper surface and side surfaces are adhered with a refractory board 15 or a noncombustible steel plate or a plastic plate to be integrally formed. Since the joint member A is configured as described above,
It has elasticity and is easily detachable between the frame panels 8 and 9. Also, the adhesion to the frame panels 8 and 9 is good. The cross-sectional size of the joint member A is set to a size (for example, the width is 1/2 to 1/4 of the wall thickness) corresponding to the wall thickness and the size of the slit 5, and a member having a fixed length (for example, 90 cm) is slit. 5 are arranged in series in the length direction without any gap. For the joint member A,
At the time of molding, long bolts 16 are previously set horizontally at predetermined intervals.

[0009] Instead of the joint member A, a hard rubber material can be used. In this case, an insertion hole for the long bolt 16 is provided in advance in the rubber material.

<D> Fixing member B (FIGS. 3 and 4) The fixing member B is a member for fixing the joint member A. In the illustrated example, the fixing member B is arranged in series in the longitudinal direction of the upper frame panel 8. , Welding W or an adhesive. In the fixing member B,
Insertion hole 1 for inserting long bolt 16 attached to joint member A
7 are provided at predetermined intervals. The fixing member B is not limited to the illustrated rectangular member, and various types of mold members can be used. Further, by setting the cross section of the member B to be smaller than the thickness of the joint member A, the joint member A can be deformed and slid while being in close contact with the frame panels 8 and 9.

<E> Structure of the inner wall 1 with the joint member A interposed therebetween (FIG. 4) In a building having the seismic isolation floor 4, a horizontal slit 5 is provided in the middle of the inner wall 1 of the seismic isolation floor 4. 5 upper wall 6
And the lower wall 7 are insulated. An upper frame panel 8 is attached to a lower end of the upper wall 6, and a lower frame panel 9 is attached to an upper end of the lower wall 7, respectively. At this time, a fixing member B for fixing the joint member A is attached to one of the frame panels. For the joint member A,
A long bolt 16 is previously inserted and attached at a predetermined interval, and the joint member A is sandwiched between the upper and lower frame panels 8 and 9, and the long bolt 16 of the joint member A penetrates the fixing member B. It has a sandwich-like structure fixed by nuts 18 on the outer side of the member B. Since the inner wall 1 is configured as described above, it can exhibit the effect as a seismic isolation wall at the time of an earthquake, and can prevent fire spread as a fire prevention partition wall at the time of a fire.

<F> Embodiment (1) of attaching joint member A to inner wall 1 (FIG. 4) A horizontal slit 5 is provided in the middle of the inner wall 1 of the base-isolated floor 4, and the upper wall 6 of the slit 5 is provided. And the lower wall 7 are insulated. In advance,
The fixing member B is fixed to one of the upper frame panel 8 and the lower frame panel 9. Next, the upper frame panel 8 is attached to the lower end of the upper wall 6 of the slit 5, and the lower frame panel 9 is attached to the upper end of the lower wall 7 via a reinforcing bar 11. Next, the filler G is filled between the upper frame panel 8 and the upper wall 6 and between the lower frame panel 9 and the lower wall 7, and the joint member A is sandwiched between the upper and lower frame panels 8 and 9. The long bolt 16 set on the joint member A penetrates the fixing member B and is fixed by the nut 18. In the above-described mounting sequence, the filler G may be filled between the frame panels 8 and 9 and the walls 6 and 7 after the joint member A is fixed to the fixing member B. Thereby, the work of attaching the joint member A can be performed quickly and easily.

<G> Embodiment of Method of Attaching Joint Member A to Inner Wall 1 (2) (FIGS. 3 and 4) A fixing member B is fixed to the upper frame panel 8. Next, the long bolt 16 of the joint member A is passed through the insertion hole 17 of the fixing member B so that the back surface 25 of the joint member A comes into contact with the upper frame panel 8, and is fixed by the nut 18. Next, the upper frame panel 8 to which the joint member A is fixed is attached to the lower end of the upper wall 6 of the slit 5 via the rib plate 10 and the reinforcing bar 11. Next, the lower frame panel 9 is attached to the upper end of the lower wall 7 via the rib plate 10 and the reinforcing bar 11 in a state where the lower frame panel 9 is pressed against the abdominal surface 24 of the joint member A, and then the upper and lower frame panels 8 and 9 are vertically moved. Mortar G is filled between the walls 6 and 7. Thereby, the work of attaching the joint member A can be performed easily, reliably, and firmly.

<H> Embodiment of mounting method of joint member A to inner wall 1 (3) This mounting method is similar to that of Embodiment (2) of <G> when FIG. 3 is viewed upside down. This is a method of attaching the member A. The fixing member B is fixed to the lower frame panel 9. Next, the back surface 25 of the joint member A is brought into contact with the lower frame panel 9, and the joint member A is fixed to the fixing member B with the long bolt 16. Next, the lower frame panel 9 to which the joint member A is fixed is attached to the upper end of the lower wall 7 of the slit 5 via a rib plate 10 or the like. Next, the upper frame panel 8 is attached to the lower end of the upper wall 6 via the rib plate 10 or the like with the upper frame panel 8 pressed against the abdominal surface 24 of the joint member A. , 7 are filled with mortar G. Thereby, the work of attaching the joint member A can be performed easily, reliably, and firmly.

<4> Embodiment of Method of Attaching Joint Member A to Inner Wall 1 (4) (FIG. 4) A fixing member B is fixed to one of the upper and lower frame panels 8 and 9 in advance. The back surface 25 of the joint member A is brought into contact with the one frame panel, for example, the upper frame panel 8, and the joint member A is fixed to the fixing member B with the long bolt 16, and then the other frame panel, that is, the lower frame panel 9 to the joint member A
To form a sandwich which is pressed against the abdominal surface 24 and compressed. Next, the above sandwich upper and lower frame panels 8, 9
Is inserted into the slit 5 and attached to the upper and lower ends of the upper and lower walls 6, 7 via the rib plate 10 or the like, and then the mortar G is filled between the upper and lower frame panels 8, 9 and the upper and lower walls 6, 7. . Thereby, the efficiency of the work of attaching the joint member A is greatly improved.

<Nu> Function of inner wall 1 at the time of earthquake (FIGS. 1 and 5) When an earthquake occurs, upper structure 19
Horizontal displacement occurs between the lower structure 20 and the lower structure 20, that is, in the slit portion 5 of the inner wall 1 and the seismic isolation device 3 of the column 2. At this time, the joint member A interposed in the slit portion 5 of the inner wall 1 undergoes shear deformation, and the abdominal surface 24 of the joint member A slides on the lower frame panel 9 to perform a seismic isolation function.

<R> Function of the inner wall 1 in the event of a fire
Since the joint member A is in close contact with the upper and lower frame panels 8 and 9, flames and smoke are not transmitted to another room or another floor. Therefore, the inner wall 1 can function sufficiently as a fire protection partition wall.

[0018]

As described above, the present invention has the following effects. <B> In the event of an earthquake, the joint member interposed in the slit on the inner wall deforms and slides to function as a seismic isolation,
Since no large seismic force is transmitted to the upper structure, the inner wall for fire protection and fire protection is not damaged. <B> In the event of a fire, the joint members interposed on the inner wall are always in close contact with the frame panels on the upper and lower walls of the slit, so that it is possible to prevent fire from spreading to another room or another floor. <C> Since the joint member is made of an elastic material, if replacement is necessary, the nut can be easily detached by removing the nut of the fixing member and pulling out the bolt and the joint member main body.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a structure of a building having a seismic isolation floor (viewed from arrows a to a in FIG. 2).

FIG. 2 is a partial plan view of the seismic isolation floor (as viewed from arrows b to b in FIG. 1).

FIG. 3 is an explanatory view showing one embodiment of a method of attaching a joint member to an inner wall.

FIG. 4 is a longitudinal sectional view showing one embodiment of the structure of the inner wall with the joint member interposed.

FIG. 5 is a longitudinal sectional view showing a deformed state of an inner wall of a base-isolated floor during an earthquake.

Front page continued (51) Int.Cl. ⁶ identifications FI E04B 2/56 604 E04B 2/56 604B 605 605Z 621 621A 621W 621Y 643 643A E04H 9/02 321 E04H 9/02 321E

Claims (5)

[Claims] In a building having a base-isolated floor, a horizontal slit is provided in the middle of the inner wall of the base-isolated floor, and the upper and lower walls of the slit are insulated from each other. A frame member attached to each end, a joint member fixed to a fixing member fixed to one of the frame panels, and a joint member mounted in a sandwich shape between the upper and lower frame panels; The structure of the inner wall interposed. 2. In a building having a seismic isolation floor, a horizontal slit is provided in the middle of the inner wall of the seismic isolation floor to insulate the upper wall and the lower wall of the slit. A fixing member is fixed to one of the frame panels, the upper and lower frame panels are attached to the upper and lower ends of the upper and lower walls of the slit, respectively, and a filler is filled between the upper and lower frame panels and the upper and lower walls. The joint member is attached to a fixing member fixed to one of the frame panels, and the joint member is fixed to one of the frame panels. 3. In a building having a base-isolated floor, a horizontal slit is provided in the middle of the inner wall of the base-isolated floor, and the upper and lower walls of the slit are insulated and fixed to the upper frame panel in advance. While fixing the member, the back surface of the joint member is brought into contact with the upper frame panel, and the joint member is fixed to the fixing member with bolts. Next, the upper frame panel to which the joint member is fixed is placed on the slit. Attach it to the lower end of the wall, and then attach the lower frame panel to the upper end of the lower wall in a state where the lower frame panel is pressed against the abdominal surface of the joint member and then fill the space between the upper and lower frame panels with the upper and lower walls. A method of attaching a joint member, characterized in that: 4. In a building having a seismic isolation floor, a horizontal slit is provided in the middle of the inner wall of the seismic isolation floor, and the upper and lower walls of the slit are insulated and fixed to a lower frame panel in advance. While fixing the member, the back surface of the joint member is brought into contact with the lower frame panel, and the joint member is fixed to the fixing member with bolts. Next, the lower frame panel to which the joint member is fixed is placed under the slit. Attach it to the upper end of the wall, and then attach the upper frame panel to the lower end of the upper wall in a state where the upper frame panel is pressed against the abdominal surface of the joint member and then fill the space between the upper and lower frame panels and the upper and lower walls with a filler. A method of attaching a joint member, characterized in that: 5. A building having a base-isolated floor, wherein a horizontal slit is provided in the middle of the inner wall of the base-isolated floor, and the upper and lower walls of the slit are insulated from each other. A fixing member is fixed to one of the frame panels, the back surface of the joint member is brought into contact with the one frame panel, and the joint member is fixed to the fixing member with bolts. Next, the sandwich upper and lower frame panels are inserted into the slits and attached to the upper and lower ends of the upper and lower walls. A method of attaching a joint member, characterized by filling a filler between the joints.