JP3980984B2 - Seismic reinforcement structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seismic reinforcement structure in a building having a rectangular space surrounded by a pair of adjacent beams and a pair of columns, such as a ramen structure building.
[0002]
[Prior art]
Conventionally, as such an earthquake-proof reinforcement structure, as shown in FIGS. 6 to 10 , it is constructed in a rectangular space a surrounded by a pair of adjacent upper and lower beams b1 and b2 and a pair of left and right columns c1 and c2. A plurality of anchor bolts e1, e1a,... Are arranged on each of the formation surfaces d1, d2,... Of the rectangular space a in the pair of beams b1, b2 and the pair of columns c1, c2, and the base ends thereof are arranged on the beam b1. , B2 and pillars c1, c2 are embedded. On the other hand, the frame members g1, g2,... Are arranged at positions opposed to the formation surfaces d1, d2,... Of the rectangular space a in the beams b1, b2 and the columns c1, c2, and the beams b1, b2 in the frame members g1, g2,. Embedded bolts i1, i2, i1a, i2a,... Are vertically projected on the surfaces facing the columns c1 and c2.
Then, either before or after the installation of the frame members g1, g2,..., The split reinforcement reinforcing spiral bars f1, f2,... Are placed, and finally the mortar m is injected and placed, so that the beams b1, b2 and the pillars. Frame members g1, g2,... are integrated with c1, c2.
The frame members g1, g2,... Are composed of an elongated plate portion j and a pair of side plate portions k1, k2 integrally formed on both long side portions of the elongated plate portion j, and one side plate portion k1 is formed as an elongated plate portion. j is vertically protruded with respect to j, and the central portion of the other side plate portion k2 is integrally fixed to the other long side portion of the elongated plate portion j perpendicularly to the elongated plate portion j. It is formed in an h shape. In the frame members g1, g2,..., The other side plate portion k2 protrudes from the other side to the formation surfaces d1, d2,... Of the rectangular space a and is perpendicular to the formation surfaces d1, d2,. Are arranged.
In addition, two braces v1 and v2 inclined in opposite directions are provided in the frame members g1, g2,..., And the upper ends of the braces v1 and v2 are connected to the upper frame member g1 and the frame members g3, g4 on both sides. The lower ends of the brackets n1 and n2 provided at the intersections are fixed to the bracket n3 provided at the center of the lower frame member g2.
[0003]
For earthquakes up to a certain seismic intensity, the two braces v1 and v2 are seismically reinforced, and when an earthquake exceeding the allowable seismic intensity occurs, one of the pair of braces v1 and v2 has a tensile force and the other has a compressive force. Acts to absorb the energy by controlling the braces v1 and v2 to yield or compressive yield, thereby controlling the shaking of the building.
[0004]
We do not conduct prior art searches at the research and development stage or application stage, and do not know the prior art documents to be described.
[0005]
[Problems to be solved by the invention]
However, the above conventional method has a problem that must be solved as follows.
(1) It is necessary to perform the troublesome work of integrally fixing the embedded bolts i1, i2, i1a, i2a, etc. to the frame members g1, g2,.
(2) There are anchor bolts e1, e1a, and embedded bolts i1, i2, i1a, i2a ... between the frame members g1, g2 ... and the formation surfaces d1, d2, ..., and the side plate k1 inside the rectangular space a. , K2 is projected, the overall thickness h is increased, the rectangular space a is narrowed, and as a result, the lighting area is reduced, and the protruding portions from the beams b1 and b2 and the columns c1 and c2 look great. Is bad.
[0006]
[Means for Solving the Problems]
In the present invention, in view of the problems (1) and (2) based on the above prior art, a rectangular frame is arranged in a rectangular space formed by a pair of adjacent upper and lower beams and a pair of left and right columns. The brace is arranged in the frame body, and the anchor bolt penetrating the frame member constituting the frame body is driven into the formation surface of the rectangular space in the beam and the column so that the bolt head of the anchor bolt is separated from the frame member. The filler is injected into the gap between the frame member and the forming surface, and the frame member has an elongated plate portion and a pair of side plate portions projecting vertically from both long side portions of the elongated plate portion. A plurality of reinforcing plates in a recess formed by a portion and a side plate portion, both ends thereof are integrated with the side plate portion and arranged in the longitudinal direction of the elongated plate portion, and a fixing filler placed in the recess is provided. by dividing into a plurality of chunks by the reinforcing plate, driving of the anchor bolt The problem of (1) above was solved by completing the installation work only by the work, the installation work of the frame member and the placement work of the filler, and the rectangular space was injected into the gap at the width of the side plate portion. Only the dimension including the thickness of the filler is made narrower, and the projecting part from the beam and column is made smaller to solve the problem (2).
Also, the bolt bolt head and the frame member of the anchor bolt are separated from each other, and the frame member is not fastened and integrated with the beam and the column with the anchor bolt, but the anchor bolt is used as the fixing filler and the fixing filler is used as the frame member. By integrating them, the anchor bolt is integrated with the frame member, so that the frame member is integrated with the beam and the column.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view showing a seismic reinforcement structure according to the present invention, FIGS. 2 and 3 are sectional views taken along lines XX and YY of FIG. 1, and FIGS. It is a principal part enlarged view.
A rectangular frame 1 composed of four frame members 1a, 1b, 1c, 1d is disposed in a rectangular space A formed by a pair of adjacent upper and lower beams B1, B2 and a pair of left and right columns C1, C2. The anchor bolts 2, 2a... Penetrating each frame member 1a, 1b, 1c, 1d are connected to the lower surface of the upper beam B1, the upper surface of the lower beam B2, and the opposing inner surfaces of the pair of columns C1, C2, that is, the rectangular space A. Are formed on the formation surfaces D1, D2,.
Each frame member 1a, 1b, 1c, 1d has an elongated plate portion 3 opposed to the rectangular space forming surfaces D1, D2,..., And is perpendicular to the inner side of the rectangular space A from both long sides of the elongated plate portion 3. Has a pair of side plate portions 4 and 4a projecting from each other , and through the elongated plate portion 3, the insertion holes 5, 5a... Of the anchor bolts 2, 2a. The bolt heads 6, 6a ... of the anchor bolts 2, 2a ... are separated from the elongated plate portion 3.
Further, a plurality of reinforcing plates 7, 7a,... Are arranged at predetermined intervals in the longitudinal direction of the elongated plate portion 3 on the side opposite to the formation surfaces D1, D2,. Both end portions of 7a ... are integrated with the side plate portions 4 and 4a.
Then, in the gap between the frame members 1a, 1b, 1c, 1d and the forming surfaces D1, D2,..., For example, a filler M having fluidity but curing and curing properties when poured, such as mortar, and A wire mesh 9 is installed in the recess 8 formed by the elongated plate portion 3 and the side plate portions 4 and 4a in the frame members 1a, 1b, 1c, and 1d, and the fixing filler 10 similar to the filler M is hit. Has been established.
[0008]
Two braces 11, 11a are arranged in a V shape in the frame members 1a, 1b, and the upper ends of the braces 11, 11a are crossed between the upper frame member 1 and the frame members 1c, 1d on both sides. The lower ends of the brackets 12 and 12a provided on the bracket 12b are fixed to the bracket 12b provided at the center of the lower frame member 1b.
The form of the braces 11, 11a is not limited to the V-shape, and although not shown, it may be a mountain type, an X type, a mansard type, or the like.
[0010]
Next, the seismic reinforcement method according to the present invention will be described.
(1) An anchor bolt in which the frame body 1 composed of the frame members 1a, 1b, 1c, 1d is disposed in the rectangular space A and then penetrates the insertion holes 5, 5a,... Of each frame member 1a, 1b, 1c, 1d. 2, 2 a... Are driven into the formation surfaces D 1, D 2... Of the beams B 1, B 2 and the pillars C 1, C 2, and then a filler M is driven into the gaps between the frame members 1 a, 1 b, 1 c, 1 d .
(2) After the wire mesh 9 is installed in the recess 8 in each frame member 1a, 1b, 1c, 1d, the fixing filler 10 is driven.
(3) The upper and lower ends of the braces 11, 11a are fixed to brackets 12, 12a, 12b provided at the intersection of the upper frame member 1 and the frame members 1c, 1d on both sides and the center of the lower frame member 1b. Set up.
[0011]
Next, the operation of the seismic reinforcement structure according to the present invention will be described.
When a building shakes due to an earthquake, etc., the shape of the rectangular space A is maintained by the pair of braces 11, 11a to improve the seismic performance of the building. However, when an earthquake exceeding the allowable seismic intensity occurs, one of the pair of braces 11, 11a A tensile force acts on the other side and a compressive force acts on the other side, and the braces 11, 11a yield or compressive yield to control the shaking of the building.
[0012]
【The invention's effect】
In short, the present invention arranges a rectangular frame 1 in a rectangular space A formed by a pair of adjacent upper and lower beams B1 and B2 and a pair of left and right columns C1 and C2, and braces 11 in the frame 1. 11a can be seismically reinforced by the frame 1 and the braces 11, 11a, and the braces 11, 11a can be tensile-yielded or compressed-yield by the tensile / compressive force acting on the braces 11, 11a. It is possible to provide a function of consuming the energy input to the building as earthquake motion and reducing damage to the structural body as much as possible.
Further, anchor bolts 2, 2 a... Penetrating through the frame members 1 a, 1 b, 1 c, 1 d constituting the frame body 1 are formed on the formation surfaces D 1, D 2... Of the rectangular space A in the beams B 1, B 2 and the columns C 1, C 2. implanted anchor bolts 2, 2a ... bolt head 6,6a of ... as is separated to the frame member 1a, 1b, 1c, 1d, the frame member 1a, 1b, 1c, 1d is the frame member is an elongated plate portion 3 When, the elongated plate portion 3 on both sides long sides a pair of side plate portions which protrude perpendicularly from the section 4, has a 4a, a plurality elongated plate portion 3 and the side plate portions 4, recess 8 formed by 4a The reinforcing plates 7, 7 a ... Are arranged in the longitudinal direction of the elongated plate portion 3 with both side portions integrated with the side plate portions 4, 4 a , and the fixing filler 10 placed in the concave portion 8 is placed in the reinforcing plate 7. , since the division by 7a ... into a plurality of chunks, the anchor bolt 2, 2a ... the fixing filler 10, fixing the filling material 10 that respectively integrated with the frame member 1a, 1b, 1c, 1d The anchor bolts 2, 2a, and the frame members 1a, 1b, 1c, 1d are integrated without the need to fasten the frame members 1a, 1b, 1c, 1d to the formation surfaces D1, D2,. It can be made .
The anchor bolts 2, 2a ... and the frame members 1a, 1b, 1c, 1d are non-contact and can prevent slippage between the anchor bolts 2, 2a ... and the frame members 1a, 1b, 1c, 1d during an earthquake. The integrity of the seismic reinforcement structure according to the present invention on the housing side can be improved.
Further, since the filler M is injected into the gaps between the frame members 1a, 1b, 1c, 1d and the formation surfaces D1, D2,..., The positioning of the frame body 1 in the rectangular space A can be performed reliably.
[0013]
A plurality of reinforcing plates 7, 7a,... Are arranged in the longitudinal direction of the elongated plate portion 3 with both ends thereof integrated with the side plate portions 4, 4a in the recesses 8 of the frame members 1a, 1b, 1c, 1d . Since the fixing filler 10 placed in the recess 8 is divided into a plurality of lumps by the reinforcing plates 7, 7a , etc., the lumps of the fixing filler 10 are not cracked or crushed by the action of an external force. The strength of the frame members 1a, 1b, 1c, 1d itself can be improved.
[Brief description of the drawings]
FIG. 1 is a front view showing a seismic reinforcement structure according to the present invention.
2 is a cross-sectional view taken along line X1-X1 in FIG.
3 is a cross-sectional view taken along line Y1-Y1 in FIG.
4 is an enlarged view of a main part of FIG.
FIG. 5 is an enlarged view of a main part of FIG. 3;
FIG. 6 is a front view showing a conventional seismic reinforcement structure.
7 is a cross-sectional view taken along line X2-X2 in FIG .
8 is a cross-sectional view taken along the line Y2-Y2 of FIG .
9 is an enlarged view of a main part of FIG .
10 is an enlarged view of a main part of FIG .
[Explanation of symbols]
1 frame
1a, 1b, 1c, 1d Frame member 2, 2a ... Anchor bolt 3 Elongated plate portion 4, 4a Side plate portion 6, 6a ... Bolt head 7, 7a ... Reinforcement plate 8 Recess
10 Fixing filler
11, 11a Brace A Rectangular space B1, B2 Beam C1, C2 Column D1, D2 ... Forming surface M Filler

Claims (1)

An anchor bolt that arranges a rectangular frame body in a rectangular space formed by a pair of adjacent upper and lower beams and a pair of left and right pillars, and also places braces in the frame body and penetrates the frame member constituting the frame body Is inserted into the formation surface of the rectangular space in the beam and the column so that the bolt head of the anchor bolt is separated from the frame member, and the filler is injected into the gap between the frame member and the formation surface. above and section has a pair of side plate portions which protrude perpendicularly from both sides long side portions of said sub long plate portion, a plurality of reinforcing plates to the elongated plate portion and a recess formed in the side plate portion, both ends A seismic reinforcement structure characterized in that the fixing fillers integrated with the side plate portions and arranged in the longitudinal direction of the elongated plate portions and divided in the recesses are divided into a plurality of blocks by the reinforcing plate .

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