JP2002348990A - Earthquake resistant structure of house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earthquake resistant structure of a house for facilitating design by equalizing a structural calculation in a full two-story house case and a setback case. SOLUTION: In a yield strength element 10 with brace materials 13 and 14 arranged in both end parts of a wall of a second floor part, first and second vertical directional members 15 and 16 are straddlingly arranged on a tie beam 50 and a second floor beam 51. In a yield strength element 11 with brace materials 13 and 14 arranged in both end parts of a wall of a first floor part, an upper part is chipped from an intermediate part of a second vertical directional member 42. Thus, since a behavior of the tie beam 50 and the second floor beam 51 becomes the same in the full two-story house case and the setback case, the structural calculation can be equalized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic structure for a two-story wooden house.

[0002]

2. Description of the Related Art In general, in a two-story house having a load-bearing wall structure, a load-bearing element having the same structure is often used for the second floor and the first floor. As this kind of load-bearing element (1), for example, as shown in FIG. 7, there is a structure in which brace members (3) and (3) are erected on a rectangular frame (2). And 1
In the floor portion, the load-bearing elements are arranged between the base and the second floor beam, and in the second floor portion, between the second floor beam and the hut beam.

[0003]

However, when the load bearing elements (1), (1),... Having the above structure are arranged on the second floor and the first floor, as shown in FIG. In the case of the total second floor where the wall lines of the parts are aligned, and in the case where the wall of the second floor is set back more than the wall of the first floor as shown in FIG. 9,
The way of applying the force is different, and the behavior of the second floor beam (5) and the hut beam (6) against the shaking of the earthquake is different. That is,
In the case of the second floor in total, the second-floor floor beam (5) and the hut beam (6) are unlikely to be bent by the load-bearing elements (1), (1), ... on the second floor and the first floor, but they were set back. In the case, the lower side of the bearing element (1) (1) of the second floor part becomes a large room, and the second floor floor beam (5) is likely to bend, and accordingly, the hut beam.
(6) also becomes easy to bend. Therefore, in the case of the second floor and the case of setback, the structure calculation must be performed separately, and the design is complicated.

Accordingly, the present invention is to provide a seismic structure for a house which can solve the above-mentioned disadvantages, make the structural calculation the same for the second floor and the case of setback, and facilitate the design. With the goal.

[0005]

In order to solve the above-mentioned problems, an earthquake-resistant structure according to the present invention comprises a pair of longitudinal members and one of the two longitudinal members from the upper end of the first longitudinal member to the other. Of the first longitudinal member arranged toward the middle of the second longitudinal member
In a house provided in a wall with a load-bearing element comprising a brace material and a second brace material similarly arranged from an intermediate portion of the second longitudinal member to a lower end portion of the first longitudinal member, In the load-bearing element of the second floor, the first and second vertical members are arranged across the upper and lower horizontal members, but in the load-bearing element of the first floor, the second vertical member It is characterized in that a portion above the middle portion is missing.

More specifically, these bearing elements are provided substantially directly below both longitudinal members of the bearing element on the second floor, such that both longitudinal members of the bearing element on the first floor are located. In addition, the load-bearing elements of the second-floor portion are arranged at both ends of the wall of the second-floor portion, and the load-bearing elements of the first-floor portion are arranged such that the second vertical member is closer to the center of the wall than the first vertical member. At the both ends of the wall of the first floor.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the seismic structure of a two-story wooden house according to an embodiment of the present invention, as shown in FIGS. 1 and 2, the strength elements having different structures in the walls of the second floor and the first floor, respectively. (10) and (11) are provided.

As shown in FIG. 3, the load-bearing element (10) of the second floor portion is, for example, a rectangular frame (12) made of channel steel.
And a pair of brace materials (1
3) (14). The frame (12) includes a pair of left and right vertical members (15) and (16) and a pair of upper and lower horizontal members (17) and (18) connecting between upper and lower ends of the two vertical members (15) and (16). ). And one of the first frames in this frame (12).
Between the upper end of the longitudinal member (15) and the upper first lateral member (17), and between the lower end of the first longitudinal member (15) and the lower second lateral member (18). The first fixing members (20) and (20) are attached to each other, and the second fixing member (21) is attached to an intermediate portion of the other second longitudinal member (16). These fixing members (20), (20), (21) are used for fixing the brace members (13, 14). In the drawing, (22) is the first vertical member (1
This is a reinforcing crosspiece that is attached across the intermediate portion of 5) and the second fixing member (21).

One of the first brace members (13) extends from the upper end of the first longitudinal member (15), ie, the upper first fixing member (20) to the middle of the second longitudinal member (16), ie, the second longitudinal member (16). The other second brace material (14) is disposed obliquely toward the fixing material (21),
Are also arranged obliquely from the second fixing member (21) toward the lower end of the first longitudinal member (15), that is, toward the lower first fixing member (20), whereby the frame (12) , Brace members (13) and (14) are arranged in a square shape.

[0010] The load-bearing element (10) (10) thus constructed
As shown in FIGS. 1 and 2, the two longitudinal members (15)
(16) ... The upper and lower horizontal members, that is, the hut beam (50) and the second floor beam (5)
It is arranged on both ends of the wall of the second floor so as to straddle 1). As a result, the upper and lower beams (50) and (51) and the pair of
By (10) and (10), a square-shaped ramen frame utilizing the bending rigidity of the upper and lower beams (50) and (51) is formed on the second floor.

When arranging the load bearing element (10), the first longitudinal member (15) is connected to the hut beam (50) and the second floor beam (51).
And is fixed to a structural column (not shown) straddling. Also, without fixing to the structural column in this way, the first longitudinal member (15)
It may be itself a structural pillar.

On the other hand, as shown in FIG. 4, a load bearing element (11) on the first floor comprises a frame (40) made of, for example, a channel steel, and a pair of brace members (13) provided on the frame (40). )(14)
Consists of The frame (40) includes a pair of longitudinal members (41) (4
2) and a horizontal member (43) connecting between the lower ends of the vertical members (41) and (42).
Compared to the frame (12) of (0), the structure is such that the upper part of the second vertical member and most of the first horizontal member are missing. Then, one of the first frames in this frame (40)
The first fixing member (45) extends across the upper end of the vertical member (41) and the lower end of the first vertical member (41) and the horizontal member (43).
(45) are respectively attached, and a second fixing member (46) is attached to the upper end of the other second longitudinal member (42). These fixing members (45), (45), (46) are used for fixing the brace members (13, 14). In the figure, reference numeral (48) denotes a reinforcing crosspiece which is attached between the intermediate portion of the first longitudinal member (41) and the second fixing member (46).

Regarding the brace members (13) and (14), the first brace member (13) is the same as the first-strength element (10).
The upper end of the longitudinal member (41), that is, the upper first fixing member (45)
From the upper end of the second longitudinal member (42), that is, the second fixing member (4).
The second brace material (14) is disposed diagonally toward 6).
Are also arranged obliquely from the second fixing member (46) toward the lower end of the first longitudinal member (41), that is, toward the lower first fixing member (45), whereby the frame (40) , Brace members (13) and (14) are arranged in a square shape.

The load-bearing elements (11) and (11) thus constructed
As shown in FIGS. 1 and 2, the second longitudinal member (4
2) With (42) positioned closer to the center of the wall than the first vertical members (41) and (41), only the first vertical members (41) and (41) are vertically It is arranged at both ends of the wall on the first floor so as to straddle the floor beam (51) and the base (53) on the foundation (52). In this arrangement, both longitudinal members (41), (42) of the load bearing elements (11) (11) of the first floor portion are connected to the load bearing elements (10) (10) of the second floor portion.
Are positioned almost immediately below the two vertical members (15, 16).
As a result, a cantilevered load-bearing wall is formed on the first floor from the foundation (52).

When arranging the load-bearing element (11), as shown in FIG. 5, the first longitudinal member (41) is connected to a structural column straddling the second floor floor beam (51) and the base (53). It is fixed to (60).
Further, instead of being fixed to the structural column, the first vertical member (41) itself may be used as the structural column.

However, in this state, the bearing wall (1)
1) In particular, it is easy for out-of-plane buckling that the portion of the second fixing member (46) escapes out of plane. Therefore, an opening frame (61) is provided across the second floor beam (51) and the base (53), and the opening frame (61) is provided.
By fixing the second longitudinal member (42) to the outside, out-of-plane buckling is prevented. The lower end of the opening frame (61) is
The upper end is attached to the L-shaped fitting (62) fixed to (53), and the upper end is fixed to the L-shaped fitting (63) with a long hole fixed to the floor beam (51) on the second floor.
It is attached to the second floor beam (51) with a gap and is slidable in the vertical direction, so that the vertical movement of the second floor beam (51) is not restricted.

As described above, in this earthquake-resistant structure,
A combined use of a ramen frame and a load-bearing wall is used, such as using a ramen frame for the second floor and a load-bearing wall for the first floor.

By adopting such an earthquake-resistant structure, as shown in FIG.
In the case of the floor and the case where the wall of the second floor is set back more than the wall of the first floor as shown in FIG. 51) and hut beam (50) behave almost the same.

That is, in the case of a total of two floors, since the bearing elements (11) and (11) of the first floor part lack the upper part from the middle part of the second vertical members (42) and (42), When set back, the lower part of the load bearing element (10) (10) ... of the second floor part becomes a large room, so in any case, the middle part of the second floor floor beam (51) is supported. There is no state.
Therefore, the force is applied in the same manner between the case of the second floor and the case of the set back as shown in FIG.
(51) and hut beam (50) will behave similarly to the quake of an earthquake. Thereby, the structure calculation can be made the same between the case of the second floor and the case of the setback, thereby facilitating the design.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention.

[0021]

As is apparent from the above description, by adopting the earthquake-resistant structure of the present invention, the case of the second floor in which the wall lines of the second floor and the first floor are aligned and the wall of the second floor are provided. In the case where is set back more than the wall on the first floor portion, it is possible to make the second floor floor beam, the hut beam and the like behave almost in the same manner against the shaking such as an earthquake by applying the same force. Therefore, the structure calculation can be made the same between the case of the second floor and the case of the setback to facilitate the design.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an earthquake-resistant structure in the case of a total of two floors.

FIG. 2 is a schematic diagram showing an earthquake-resistant structure when the second floor portion is set back.

FIG. 3 is a view showing a load-bearing element of a second floor portion.

FIG. 4 is a view showing a bearing element of a first floor portion.

FIG. 5 is a diagram showing an arrangement state of a load bearing element in a first floor portion.

FIG. 6 is a diagram showing how a force is applied to a shake such as an earthquake.

FIG. 7 is a diagram showing an example of a conventional load-bearing element.

FIG. 8 is a schematic diagram showing a conventional earthquake-resistant structure for a total of two floors.

FIG. 9 is a schematic view showing a conventional earthquake-resistant structure when the second floor portion is set back.

[Explanation of symbols]

 (10) Strength element of second floor part (11) Strength element of first floor part (13) First brace material (14) Second brace material (15) (41) First longitudinal member (16) (42) ) 2nd longitudinal member (50) Hut beam (horizontal member) (51) 2nd floor floor beam (horizontal member) (53) Base (horizontal member)

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takuya Nakabayashi 1-88, Oyodonaka, Kita-ku, Osaka Sekisui House Co., Ltd. F-term (reference) 2E002 EA01 EA02 EB03 EB12 FA02 FA03 FB15 HA02 HB01 JA01 JA03 JB01 LA03 MA12 2E025 AA01 AA13

Claims (3)

[Claims] 1. A pair of longitudinal members, and a first member disposed from an upper end of one first longitudinal member of the two longitudinal members to an intermediate portion of the other second longitudinal member. In a house provided in a wall with a load-bearing element comprising a brace material and a second brace material also arranged from an intermediate portion of the second longitudinal member to a lower end of the first longitudinal member, 2 In the load-bearing element of the floor portion, the first and second vertical members are arranged straddling the upper and lower horizontal members, but in the load-bearing element of the first floor portion, the intermediate members of the second vertical member are provided. The earthquake-resistant structure of a house, characterized by lacking the upper part of the house. 2. The load-bearing element according to claim 1, wherein the load-bearing elements of the first-floor part are located substantially directly below both longitudinal members of the load-bearing element of the second floor. Seismic structure of residential house. 3. The load-bearing element of the second floor part is arranged at both ends of the wall of the second floor part, and the load-bearing element of the first floor part has a second longitudinal member which is higher than the first longitudinal member. 3. The earthquake-resistant structure of a house according to claim 1 or 2, wherein the structure is disposed at both ends of the wall on the first floor so as to be located near the center of the wall.