JP2003003672A - Reinforcing method for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing method for a building, which dispenses with the removal of a wall board, a ceiling board, etc., in a room, enables reinforcing work under a state wherein the building is inhabited, and allows the execution of work at a relatively low cost. SOLUTION: An L-shaped reinforcing frame 10, which is composed of a vertical frame material 11 and a horizontal frame material 12 provided protrusively at a lower end of the material 11, is arranged on an outer periphery of the building; the material 12 of the reinforcing frame 10 is buried in concrete 13 underground; and the material 11 is fixed to a skeleton 1 of the building by a bolt 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing method for reinforcing various buildings such as a wooden building and a steel structure building, especially an existing building with a seismic structure.

[0002]

2. Description of the Related Art Conventionally, for reinforcing an existing building to make it an earthquake-resistant structure, triangular reinforcing metal fittings have been used at the corners of vertical members such as columns and horizontal members such as beams that constitute the building frame. Although this method is used for mounting, this method requires a large number of mounting points and requires the removal of indoor wall boards and ceiling boards, which takes a lot of time and labor and increases construction costs. In addition, in the case of residential buildings, there was a problem that they could not live during construction.

The present invention provides a method of reinforcing a building which does not require removal of indoor wall boards, ceiling boards, etc., enables reinforcement work while allowing living in the building, and can reduce construction costs as much as possible. With the goal.

[0004]

The invention according to claim 1 is
An L-shaped reinforcing frame 10 composed of a vertical frame member 11 and a horizontal frame member 12 protruding from the lower end of the vertical frame member 11 is arranged on the outer periphery of the building, and the horizontal frame member 12 of the reinforcing frame 10 is concretely ground. Thirteen
And the vertical frame member 11 is fixed to the frame 1 of the building with bolts 15.

According to the second aspect of the present invention, an L-shaped reinforcing frame 10 composed of a vertical frame member 11 and a horizontal frame member 12 protruding from the lower end of the vertical frame member 11 is provided at least at two locations on the outer periphery of the building. The horizontal frame members 12 of the reinforcing frames 10 are arranged so as to be positioned in directions orthogonal to each other, and the horizontal frame members 12 of each reinforcing frame 10 are embedded in the concrete 13 in the ground, and each reinforcing frame 1
The vertical frame member 11 of 0 is fixed to the body 1 of the building with the bolt 15.

According to the third aspect of the present invention, there is provided a reinforcing frame 20 or 30 comprising a vertical frame member 11 and a plurality of horizontal frame members 12 projecting horizontally from each other at an interval of 90 degrees at a lower end portion thereof.
This reinforcement frame 2 is placed at least at one location on the outer periphery of the building.
It is characterized in that 0 or 30 horizontal frame members 12 are embedded in concrete in the ground, and vertical frame members 11 are fixed to the body 1 of the building with bolts 15.

A fourth aspect of the present invention relates to the method for reinforcing a building according to any one of the first to third aspects, and includes a reinforcing frame 10, 20 or 30.
The vertical frame member 11 and the horizontal frame member 12 are interlocked and connected with the diagonal frame member 16 to reinforce the reinforcing frame 10, 20 or 30.

A fifth aspect of the present invention is the method for reinforcing a building according to any of the first to fourth aspects, wherein the reinforcing frame 10, 20 or 30 is provided with a required space between the vertical frame member 11 and the outer wall 9 of the building. The outer wall required portion through which the bolt 15 is inserted is cut off, and the spacer 14 is interposed between the cut portion 17 and the vertical frame members 11 of the reinforcing frames 10, 20, 30. It is characterized in that the bolt 15 is passed through the spacer 14 so as to be inserted into the body 1 side.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an existing building which has been subjected to the reinforcing method of the present invention, and is a cross-sectional plan view taken along the line X--X in FIG. 2, and FIG. 2 is a vertical sectional front view of the building. This building is wooden 3
In a story, the skeleton 1 is generally fixed on a foundation 2 in a state in which a lower horizontal pillar 3 is framed in a peripheral frame shape, and the peripheral horizontal frame-shaped lower horizontal pillar 3 ... is provided with four corner pillars 4 on the four corners. And the studs 5 are erected between the corner pillars 4 ...
Beams 6, 7 and 8 are laterally laid on each other at required heights, and an outer wall material 9 is provided on an outer surface of the body 1.

An embodiment of the method of the present invention for reinforcing this building will be described. First, L consisting of a vertical frame member 11 and a horizontal frame member 12 protruding from the lower end of the vertical frame member 11.
As shown in FIG. 1, the horizontal frame members 12 and 12 of the reinforcing frames 10 of both sides are arranged at two positions on the front side of the outer periphery of the building as shown in FIG. , The horizontal frame members 12 of the reinforcing frames 10 are embedded in the concrete 13 in the ground, and the vertical frame members 11 of the reinforcing frames 10 are attached to the building frame 1 of the building. The bolts 15 are fixed via the spacers 14. In FIG. 1, the lower side is the front side and the upper side is the rear (rear) side.

The above reinforcing method will be described in more detail. For example, H-shaped steel is used to form the vertical frame member 11 and the horizontal frame member 12 to the required lengths, and the horizontal frame member is provided at one end of the vertical frame member 11. Material 1
2 are arranged at right angles and joined by welding, for example, to form the L-shaped reinforcing frame 10. The ratio of the lengths of the vertical frame member 11 and the horizontal frame member 12 can be set as desired, for example, 3 ... 1 or 5 ... 1. Further, as shown by phantom lines in FIG. 3, the diagonal frame member 16 is interposed and connected between the vertical frame member 11 and the horizontal frame member 12 of the reinforcing frame 10 by welding or the like to reinforce the L-shaped reinforcing frame 10. By doing so, the reinforcing frame 10 can be made more robust.

The vertical frame material 11 of each reinforcing frame 10 is arranged at a distance of, for example, about 3 to 5 cm from the outer wall 9 of the building. This is because the reinforcing frame 10 is semi-permanently installed, so that the vertical frame material 11 is arranged at an appropriate distance from the building outer wall 9 to perform repair work on the outer wall of the building, for example, every 10 years. In that case, the construction will not be hindered.

In this case, the spacer 14 is interposed between the vertical frame member 11 of each reinforcing frame 10 and the building frame 1. As the spacer 14, as shown in FIG. Disk 1 made of metal with a hole that can be inserted
It is advisable to stack a required number of 4a. In addition, the spacer 14 is used as the vertical frame member 1 of the building frame 1 and each reinforcing frame 10.
When interposing it with 1, the required portion of the outer wall 9 through which the bolt 15 is passed through, for example, the pillar 5 of the frame 1 is cut into, for example, a circular shape as shown in FIG. The spacer 14 is interposed between the vertical frame member 11 and the vertical frame member 11. Then, the bolt 15 is passed through the bolt insertion hole 18 of the vertical frame member 11 into the spacer 14 and is inserted into the bolt insertion hole 19 of the column 5, so that the bolt 15 The nut 20 is screwed into the tip from the indoor side of the building and tightened. The cut portion 17 of the outer wall 9
If left as it is, rainwater will infiltrate, so it is necessary to finally fill and close it with caulking material or the like.

When the horizontal frame member 12 of each reinforcing frame 10 is embedded in the concrete 13 in the ground, the ground is excavated to form a hole having a required size and depth, and the horizontal direction of the reinforcing frame 10 is formed in this hole. After inserting the frame material 12, the concrete 13
2, so that the lower ends of the horizontal frame member 12 and the vertical frame member 11 are embedded in the concrete 13 as shown in FIG. This concrete 13 is, as will be described later,
Lateral load A or A'or B or B'acting on the body 1
Form a counterweight to counter the.

In the existing building reinforced as described above, the ground G sways due to the occurrence of an earthquake, and
When a lateral load A or A'is applied to the frame 1 of the building as shown in Fig. 2, the lateral load A or A'is applied to both L-shaped reinforcing frames 10 installed on the front side and the right side of the outer periphery of the building. , 10 and each reinforcing frame 10 has a horizontal frame member 12 at the lower end.
Since the side is buried in the concrete 13, the reinforcing frames 10, 10 prevent the frame 1 from being damaged or collapsed by the lateral load A or A '. In this case, lateral load A
Or, for A ', an L-shaped reinforcing frame 10 installed on the right side of the outer periphery of the building (that is, the reinforcing frame 10 in which the horizontal frame member 12 is arranged parallel to the direction of the lateral load A or A'). Since it has a more stable structure, the lateral load A or A'can be sufficiently and effectively received by the L-shaped reinforcing frame 10 installed on the right side surface side.

Further, as shown in FIG. 1, the lateral load A or A '.
When a lateral load B or B ′ in a direction orthogonal to the direction acts on the frame 1, the lateral load B or B ′ is also applied to both the L-shaped reinforcing frames 10 installed on the front side and the right side of the outer periphery of the building. Since it is supported by 19, the damage and collapse of the skeleton 1 due to the lateral load B or BA 'are prevented by these reinforcing frames 10, 10. In this case, with respect to the lateral load B or B ′, an L-shaped reinforcing frame 10 (a reinforcing member in which the horizontal frame member 12 is arranged in parallel with the direction of the lateral load B or B ′) is installed on the front side of the outer periphery of the building. Since the frame 10) has a more stable structure, the lateral load B or B'can be sufficiently and effectively received by the L-shaped reinforcing frame 10 installed on the front side.

In particular, in this reinforcing structure, the horizontal frame member 12 and the vertical frame member 11 lower end portion of each L-shaped reinforcing frame 10 are embedded in the concrete 13.
Since 3 functions as a counterweight against the lateral load A or A ', B or B', even if the lateral load A or A ', B or B'is considerably large, the body 1 collapses in the worst case. The situation of can be avoided. Further, in this case, as shown by the phantom line in FIG. 3, the diagonal frame member 16 is interposed and connected between the vertical frame member 11 and the horizontal frame member 12 of the reinforcing frame 10 of each L-shaped reinforcing frame 10. By placing each L
The character-shaped reinforcing frame 10 can exhibit a sufficient supporting force for the lateral loads A or A'and B or B '.

In the embodiment shown in FIG. 4, in the reinforcing method of the embodiment shown in FIGS. 1 and 2, the L-shaped reinforcing frame 10 is installed at two positions on the front side of the building outer periphery and on either the left or right side. On the other hand, the same L-shaped reinforcing frame 10 is installed at four positions on the front side, the rear side, and the left and right side surfaces of the outer periphery of the building. Is the same as the embodiment of FIGS. 1 and 2. However, in the embodiment of FIG. 4, the vertical frame members 11 of the respective reinforcing frames 10 installed on the left and right side surfaces of the outer periphery of the building are bolted to the beams 6, 7 and 8 of the frame 1 via the spacers 14, respectively. The points are slightly different. According to the reinforcing method in which the reinforcing frame 10 is installed on the front, rear, left, and right sides of the outer periphery of the building, the reinforcing frame 10 and the concrete 13 (counterweight) burying the lower end portion of the reinforcing frame 10 are arranged on the front, rear, left, and right sides of the outer periphery of the building with good balance. As a result, the building is effectively and sufficiently reinforced.

FIG. 5A shows a vertical frame member 11 and three horizontal frame members 12, 12, 12 which are provided at the lower end of the vertical frame member 11 so as to project horizontally at intervals of 90 degrees. (B) of the figure shows a vertical frame member 11 and two horizontal frame members 12 and 12 that are provided at the lower end of the vertical frame member 11 so as to project horizontally at intervals of 90 degrees. A reinforcing frame 20 made of, is shown. The reinforcing frames 30 and 20 are both vertical frame members 11.
And that one horizontal frame member 12 is formed in an L shape,
It is similar to the reinforcing frame 10. Also, these reinforcing frames 3
Also in the case of 0 and 20, as shown by phantom lines in (A) and (B) of FIG. 5, a diagonal frame member 16 is interposed between the vertical frame member 11 and each horizontal frame member 12, By reinforcing the L-shaped reinforcing frame portion, a more robust reinforcing frame structure can be obtained.

6 and 7 show a method of reinforcing an existing building using the reinforcing frame 30 shown in FIG. 5 (A). That is, in this reinforcing method, the reinforcing frame 30 is arranged on one of the right and left side surfaces (in this case, the right side surface side) of the outer periphery of the building as shown in FIG. 6, and the three horizontal frame members 12 of the reinforcing frame 10,
Each of 12 and 12 is embedded in the concrete 13 in the ground, and the vertical frame material 11 is fixed to the pillar 5 of the building frame 1, for example, by the bolts 15 via the spacers 14.

In the existing building reinforced as described above, when the ground G sways due to an earthquake and a lateral load A or A'applies to the building frame 1 as shown in FIG. 6, this lateral load A Or, in A ', the horizontal frame member 12 at the lower end is concrete 1
3 is supported by a reinforcing frame 30 embedded in the horizontal frame member 12. In this case, for the lateral load A or A ', the horizontal frame member 12 on the side parallel to the direction of the lateral load A or A', Since the L-shaped reinforcing frame portion formed by the vertical frame member 11 has a more stable structure, the lateral load A or A ′ is sufficiently and effectively received by the L-shaped reinforcing frame portion, and Damage and collapse are prevented.

When a lateral load B or B ′ in a direction orthogonal to the lateral load A or A ′ acts on the body 1, the lateral load B or B ′ is also supported by the same reinforcing frame 30, In this case, with respect to the lateral load B or B ′, the reverse frame formed by the two horizontal frame members 12 and 12 located on the side parallel to the direction of the lateral load B or B ′ and the vertical frame member 11. T
Since the reinforcing frame portion (see FIG. 5 (A) in FIG. 5) has a more stable structure, the inverse T-shaped reinforcing frame portion receives the lateral load B or B ′ sufficiently and effectively, and damage or damage to the frame 1 can occur. Collapse will be prevented. The other functions other than this are the same as the reinforcing method using the reinforcing frame 10 shown in FIGS. 1 and 2.

As described above, according to the reinforcing method using the reinforcing frame 30 in which the three horizontal frame members 12, 12, 12 are horizontally projected at the lower end of the vertical frame member 11 at intervals of 90 degrees. , By installing the reinforcing frame 30 at one place on the outer periphery of the building, the lateral load A or A ′ due to the rolling motion at the time of the earthquake occurs.
Also, since the lateral load B or B ′ in the direction orthogonal to this can be counteracted, there is an advantage that the construction is simple and the cost can be reduced. In addition, as shown in FIG. 5B, a reinforcing frame 20 formed by projecting two horizontal frame members 12 and 12 horizontally around each other at an interval of 90 degrees at the lower end of the vertical frame member 11 is provided on the outer periphery of the building. Even when it is installed at one place, it is possible to obtain substantially the same operational effect as the reinforcing frame 30.

8 and 9, the reinforcing frames 20 shown in FIG. 5B are arranged on the left and right side surfaces of the outer periphery of the building, and the two horizontal frame members 12, 12 of each reinforcing frame 20 are respectively grounded. The vertical frame member 11 is embedded in the concrete 13 and fixed to the pillar 5 of the building frame 1, for example, by the bolts 15 via the spacers 14. The operation and effect of the reinforcing method of this embodiment are almost the same as those of the reinforcing method of the reinforcing frame 30 shown in FIGS. 6 and 7.

In the above embodiment, the reinforcing frames 10, 20,
Although an example in which the vertical frame member 11 and the horizontal frame member 12 of 30 are made of H-shaped steel has been described, the vertical frame member 11 and the horizontal frame member 12 are not limited to the H-shaped steel, but may be rectangular steel or round steel. It can be formed of various steel materials such as steel and channel steel. Also, the slant frame member 16 can be made of various steel materials. In addition, in this embodiment, as a bolt for fixing the vertical frame member 11 of the reinforcing frame 10 to the body 1,
Although the bolt 15 that requires the nut 20 has been illustrated, the present invention is not limited to such a bolt 15, and a coach bolt (coach screw) that does not require a nut and can be screwed in itself may be used.

In the above embodiments, the method of reinforcing a wooden building has been described, but the building to be reinforced may be a steel structure building or a reinforced concrete building. In addition, the vertical frame members 11 of the reinforcing frames 10, 20, and 30 are the columns 4 of the frame 1.
It is not limited to 5 and can be fixed to the beams 6, 7 and 8 with bolts.

[0027]

According to the reinforcing method of the invention of claim 1, an L-shaped reinforcing frame composed of a vertical frame member and a horizontal frame member is arranged on the outer periphery of the building, and the horizontal frame member of each reinforcing frame is underground. Since it is a method of fixing the vertical frame material of each reinforcing frame to the building frame with bolts while embedding it in concrete, when the ground shakes due to an earthquake and a lateral load acts on the building frame, the lateral load is The horizontal frame member side is supported by a reinforcing frame embedded in concrete in the ground, thus preventing damage or collapse of the skeleton. In this case, the concrete in which the horizontal frame material of the reinforcing frame is embedded functions as a counterweight that faces the lateral load,
Even if the lateral load is quite large, it is possible to avoid the worst case in which the body collapses. Also, with this reinforcement method,
There is no need to remove indoor wall boards, ceiling boards, etc., and reinforcement work can be performed while living in a building, and the construction cost can be reduced.

In the reinforcing method of the invention according to claim 2, an L-shaped reinforcing frame composed of a vertical frame member and a horizontal frame member is provided at least at two positions on the outer periphery of the building, and the horizontal frame members of the reinforcing frames are orthogonal to each other. The horizontal frame material of each reinforcement frame is embedded in the concrete in the ground, and the vertical frame material of each reinforcement frame is fixed to the building frame with bolts. When the building is shaken and a lateral load is applied to the body of the building in a direction parallel to the horizontal frame material of one reinforcing frame, the lateral load is supported by the reinforcing frames installed in at least two locations on the outer circumference of the building. Of these reinforcing frames, a reinforcing frame having a horizontal frame member positioned in parallel with the direction of the lateral load has a more stable structure, and the lateral frame is sufficiently received by the reinforcing frame having the stable structure. Also, when a lateral load in a direction orthogonal to the lateral load is applied to the body, this lateral load also becomes
Although supported by a plurality of reinforcing frames around the building, other reinforcing frames having horizontal frame members extending parallel to the direction of the lateral load have a more stable structure and can be sufficiently received by the reinforcing frame of the stable structure. Therefore, damage or collapse of the body is effectively prevented.

According to a third aspect of the reinforcing method of the present invention, a reinforcing frame composed of a vertical frame member and a plurality of horizontal frame members projecting horizontally around each other at 90 ° intervals is provided at the lower end of the vertical frame member. A method of arranging the reinforcing frame at least at one location on the outer periphery, embedding the horizontal frame material of the reinforcing frame in the ground in the ground, and fixing the vertical frame material to the frame of the building with bolts. If it is installed at a location, it can withstand lateral load due to rolling in the event of an earthquake and lateral load in a direction orthogonal to this lateral load, so that the reinforcement work can be further simplified and the construction cost can be further reduced.

As in the reinforcing method of the invention according to claim 4,
If an oblique frame member is interposed between the vertical frame member and the horizontal frame member of the reinforcing frame, the L-shaped reinforcing frame itself can be reinforced and a more robust reinforcing frame can be obtained.

As in the reinforcing method of the invention according to claim 5,
The reinforcing frame is arranged so that a required space is provided between the vertical frame material and the outer wall of the building, the outer wall required portion through which the bolt is passed is cut, and the cut portion and the vertical frame material of the reinforcing material are If a spacer is interposed between the vertical frame members and the bolts are passed through the spacer and inserted into the body side, when repairing the outer wall of the building, that work will not be hindered. The repair work becomes easy.

[Brief description of drawings]

FIG. 1 shows an existing building that has been subjected to the reinforcing method of the present invention, and is a cross-sectional view taken along line XX of FIG.

FIG. 2 is a vertical sectional view of a building.

FIG. 3 is an enlarged perspective view showing the reinforcing frame shown in FIGS. 1 and 2, and showing how to attach the vertical frame member of the reinforcing frame to the body side.

FIG. 4 is a cross-sectional view of a building similar to FIG. 1, showing another embodiment of the method of the present invention.

5A is a perspective view of a reinforcing frame in which three horizontal frame members are projectingly provided at a lower end portion of the vertical frame member, and FIG. 5B is a perspective view of a reinforcing frame member at a lower end portion of the vertical frame member.
It is a perspective view of the reinforcement frame which provided the one horizontal frame material.

6 is a transverse sectional view of a building similar to FIG. 1 illustrating a reinforcing method by using the reinforcing frame shown in FIG. 5A, Y in FIG.
It is a cross-sectional view taken along the line Y.

7 is a vertical cross-sectional view of the building shown in FIG.

8 is a transverse sectional view of a building similar to FIG. 6 illustrating a reinforcing method using the reinforcing frame shown in FIG. 5B, Z in FIG.
It is a cross-sectional view taken along the line Z.

9 is a vertical cross-sectional view of the building shown in FIG.

[Explanation of symbols]

1 Building frame 9 outer wall 10, 20, 30 Reinforcement frame 11 Vertical frame material 12 Horizontal frame material 13 concrete 14 Spacer 15 volts 16 diagonal frame material 17 Excision of outer wall

Claims (5)

[Claims] 1. An L-shaped reinforcing frame composed of a vertical frame member and a horizontal frame member protruding from the lower end of the vertical frame member is arranged on the outer periphery of the building,
A method of reinforcing a building in which the horizontal frame material of this reinforcing frame is embedded in concrete in the ground and the vertical frame material is fixed to the body of the building with bolts. 2. An L-shaped reinforcing frame composed of a vertical frame member and a horizontal frame member protruding from the lower end of the vertical frame member is provided at least at two locations on the outer periphery of the building, and the horizontal frame members of the reinforcing frames are Reinforce the building by arranging them so that they are positioned orthogonal to each other, embedding the horizontal frame material of each reinforcing frame in concrete in the ground, and fixing the vertical frame material of each reinforcing frame to the building frame with bolts. Method. 3. A reinforcing frame composed of a vertical frame member and a plurality of horizontal frame members horizontally projecting at a lower end portion of the vertical frame member at intervals of 90 degrees from each other is arranged on the outer periphery of the building. A method of reinforcing a building by embedding the frame material in concrete in the ground and fixing the vertical frame material to the frame of the building with bolts. 4. The reinforcing frame is reinforced by interposing an oblique frame member between the vertical frame member and the horizontal frame member of the reinforcing frame.
The method for reinforcing a building according to any one of 1. 5. The reinforcing frame is arranged at a required interval between the vertical frame material and the outer wall of the building, and the outer wall required portion through which the bolt is passed is cut off, and the cut portion and the vertical frame of the reinforcing frame are cut off. The method for reinforcing a building according to any one of claims 1 to 4, wherein a spacer is interposed between the frame member and the vertical frame member so that the bolt is passed through the spacer and inserted into the body side.