JP3690452B2 - Reinforcement structure of building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcing structure for a building that is installed inside a building and reinforces the frame of the building.
[0002]
[Prior art]
As is well known, for example, a brace is used to reinforce a frame composed of beams and pillars of a building.
When applying braces in steel structures, it is common to use structural steel or steel rods, especially resisting oblique tensile forces, to provide structural elements that can withstand horizontal forces.
Since braces as structural elements generally have a large slenderness ratio, in design, they are often considered as tensile braces that resist only tensile force, but in addition, they have resistance to compressive force. Sometimes used as a tension / compression brace.
[0003]
[Problems to be solved by the invention]
The braces described above are used as structural elements that are resistant to oblique tensile forces when horizontal forces are applied to the building. However, if horizontal forces are actually applied to the building due to an earthquake, etc. Since it is impossible for force to act only in the direction, an alternating force always acts on the brace.
[0004]
In this way, when an alternating force is applied to the brace, in the case of a tensile brace, a buckling phenomenon occurs when a load is applied in a direction opposite to the direction in which the brace functions. Degradation and damage to the finish will occur.
[0005]
In the case of a tension / compression brace, since the cross section is defined by the buckling strength on the compression side, the cross section becomes larger than necessary and the cost increases. Furthermore, in the case of a tension / compression brace, it has a very complicated behavior such as whether it is an energy absorption type, a strength resistance type, or an intermediate region depending on the brace slenderness ratio. It is difficult to ensure the performance, and this is a difficulty in making an economical design.
[0006]
In particular, steel-based materials exhibit very stable characteristics against tensile forces, so that they can be used to the fullest while taking advantage of this function as a structural element. There is a need for a reinforcement structure for objects.
[0007]
The present invention has been made in view of the above circumstances, and is capable of exhibiting a stable function as a structural element by making use of the characteristics of a steel frame material, and is also concerned about a decrease in yield strength due to buckling and damage to a finishing material. The object is to provide a reinforcing structure for a building that is excellent in economic efficiency.
[0008]
[Means for Solving the Problems]
In the present invention, the following means are adopted in order to solve the above problems.
That is, the reinforcing structure for a building according to claim 1 is installed in an opening surrounded by the left and right columns and the upper and lower beams in the frame, and one end thereof is pin-bonded to a part of the frame. The other end is provided with a reinforcing body pin-bonded to the other part of the frame,
The reinforcing body is supported by a first pin fulcrum provided at one end thereof in a part of the frame, and the first and second pin ends are respectively provided as first and second pin nodes. The first and second pin nodes are respectively connected at one end thereof, and the other end is supported by a second pin fulcrum provided at another part of the frame. And the fourth linear member, and one end thereof is connected to the first and second pin nodes, a contact plate is provided at the other end, and the contact plates are arranged so as to face each other, In addition, the first and second connecting members provided on the straight line connecting the first and second pin nodes,
The contact plates that are opposed to each other can be separated from each other, and the first and second connecting members are separated from each other in accordance with displacement of the first and second pin nodes away from each other. It is characterized by being held so as to be movable in the same axial direction .
[0009]
In this reinforcing structure of a building, when a tensile force is applied to the reinforcing body, the first and second pin nodes try to move in a direction approaching each other. Since the contact plates provided on the material are in contact with each other, the movement of the positions of the first and second pin nodes is restricted, whereby the deformation of the reinforcing body is suppressed, and the reinforcing body Becomes sufficiently resistant to the tensile force. On the other hand, when a compressive force is applied to the reinforcing body , the reinforcing body is simply deformed so that the first and second pin nodes are separated from each other, and at this time, they are opposed to each other. Since the contact plates to be separated can be separated from each other, the deformation of the reinforcing body is not suppressed, so that a compressive force does not act on each linear member constituting the reinforcing body.
[0010]
The reinforcing structure for a building according to claim 2 is the reinforcing structure for a building according to claim 1, wherein a plurality of the reinforcing bodies are arranged in a K shape in the opening. .
[0012]
The building reinforcing structure according to claim 3 is the building reinforcing structure according to claim 1 or 2 , wherein the first, second, third, and fourth linear members are formed of the opening. When viewed from a direction orthogonal to the plane formed, each is arranged so as to form a substantially rhombus with one side thereof, and the connecting material is arranged so as to be located on a diagonal line of the rhombus. To do.
[0013]
In the reinforcing structure of this building, when the force acts on the frame so that the first and second pin fulcrums are separated from each other, it is ensured that the ends of the connecting material are connected to each other. They can be brought into contact with each other.
[0014]
The building reinforcing structure according to claim 4 is the building reinforcing structure according to any one of claims 1 to 3, wherein the reinforcing body is installed as a brace in the opening. And
[0015]
Since the reinforcing structure of this building is configured as described above, it can be easily attached to any type of building.
[0016]
The building reinforcing structure according to claim 5 is the building reinforcing structure according to any one of claims 1 to 4, wherein the reinforcing body is formed of a steel frame.
[0017]
Since it is set as the above structure, the reinforcement structure of this building can show the stable property especially when tensile force acts.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments and reference examples of the present invention will be described with reference to FIGS.
[ Embodiment ]
FIG. 1 is a diagram showing an example of an embodiment of the present invention. In the figure, reference numeral 1 denotes a building reinforcing structure. A building reinforcement structure 1 is composed of reinforcement bodies 7 and 7 installed as braces in an opening 6 surrounded by left and right columns 3 and 3 and upper and lower beams 4 and 4 of a building frame 2. . As shown in the drawing, both ends of the reinforcing bodies 7 and 7 are supported by a first pin fulcrum 9 and second pin fulcrums 10 and 10 provided in the frame 2.
[0023]
Moreover, as shown in the figure, the first and second linear members 12 and 13 are pin-joined to the first pin fulcrum 9, and the first and second linear members 12 and 13 are The first and second pin nodes 15 and 16 are connected to third and fourth linear members 18 and 19 that are pin-joined to the second pin fulcrum 10. The first and second pin nodes 15 and 16 are provided with connecting members 20 and 20, respectively.
[0024]
These first, second, third, and fourth linear members 12, 13, 18, and 19 are arranged so as to be substantially rhombus when viewed from the direction orthogonal to the plane formed by the opening 6, and The connecting members 20 and 20 are arranged so that the contact plates 21 and 21 provided at the end portions are opposed to each other on the diagonal line d1 connecting the first and second pin nodes 15 and 16 in the rhombus. Is arranged. Further, the connecting members 20 and 20 are configured to be held movably along the diagonal line d1 as the first and second pin nodes 15 and 16 are displaced.
Moreover, all the members which comprise the reinforcement body 7 are comprised by the steel frame member.
[0025]
The above is the main configuration of the building reinforcement structure 1 according to the present embodiment. Next, the behavior of the building reinforcement structure 1 when a horizontal force acts on the frame 2 due to an earthquake or the like will be described. To do.
[0026]
As shown in FIG. 2, when a horizontal force acts on the frame 2 indicated by the two-dot chain line from the left as shown by an arrow A in the figure, the frame 2 is indicated by a solid line in the figure. Accordingly, the first and second pin fulcrums 9 and 10 constituting both ends of the reinforcing body 7 located on the left side in the figure are separated from each other and are located on the right side in the figure. The first and second pin fulcrums 9 and 10 constituting both ends of the reinforcing body 7 to be displaced are displaced so as to approach each other.
[0027]
When the first and second pin fulcrums 9 and 10 are displaced so as to be separated from each other, a tensile force acts on the reinforcing body 7 supported by the first and second pin fulcrums 9 and 10, thereby the first and second pin nodes. Both 15 and 16 try to be displaced in the direction shown as p in the figure. However, since the contact plates 21 and 21 provided on the connecting members 20 and 20 are in contact with each other, the displacement of the first and second pin nodes 15 and 16 is suppressed.
[0028]
FIG. 3 is an enlarged view of the situation near the first pin node 15 at this time. As shown in the drawing, the first pin node 15 is subjected to the tensile force T of the first and third linear members 12 and 18, respectively, but in order to balance the resultant force of these tensile forces T and T, A compressive force C is applied from the connecting material 20, and the balance of the force is maintained.
At this time, the compression force C is exchanged between the connecting members 20 and 20 via the contact plates 21 and 21.
[0029]
On the other hand, when the first and second pin fulcrums 9 and 10 are displaced so as to approach each other, the first and second pin nodes 15 and 16 of the reinforcing body 7 supported by these are respectively connected to the straight lines. A force acts in the direction indicated by q in the figure through the members 12, 13, 18, and 19, whereby the first and second pin nodes 15 and 16 are displaced in the q direction. At this time, since the connecting members 20 and 20 are separated from each other, no stress is exchanged between the connecting members 20 and 20.
Thus, when the first and second pin fulcrums 9 and 10 are displaced so as to approach each other, the reinforcing body 7 simply corresponds to the displacement, and the first and second pin nodes 15, It is only deformed so that the distance between 16 is increased, and no compressive force is applied to each of the linear members 12, 13, 18, 19.
[0030]
The above is the action at the time of the earthquake in the building reinforcement structure 1. In the above-described building reinforcement structure 1, the first and second ends of the reinforcing body 7 provided on the frame 2 are as described above. The first and third linear members 12 and 18 are supported by the pin fulcrums 9 and 10 and the first and third pin fulcrums 9 and 10 are interposed between the first and second pin fulcrums 9 and 10 via the first pin nodes 15. The second and fourth linear members 13 and 19 are provided through the pin nodes 16 respectively. Therefore, when the first and second pin fulcrums 9 and 10 are displaced in the direction in which they are separated (tensile direction), the reinforcing body 7 can resist the tensile force. When the second pin fulcrum 9 and 10 are displaced in the approaching direction (compression direction), the reinforcing body 7 is deformed so as to be bent at the first and second pin nodes 15 and 16, thereby reinforcing the reinforcing body. It is possible to prevent a compressive force from acting on each of the components 7.
[0031]
Thus, in the reinforcing structure 1 for a building of the present embodiment, by adopting a mechanism that can resist in the tension direction and is free in the compression direction, On the other hand, it is possible to make maximum use of the characteristics of steel-based materials that are stable. In addition, in this way, in the reinforcing structure 1 of a building, there is no concern of causing buckling of its constituent elements, and there is a concern of occurrence of damage such as damage to the finishing material during an earthquake and a decrease in proof stress after the earthquake. Thus, the safety of the building 1 can be easily ensured.
[0032]
Further, in the reinforcing structure 1 of a building, a connecting material 20 is provided for each of the first and second pin nodes 15 and 16, and when a force acts on the reinforcing body 7 in the tensile direction. By connecting the connecting members 20 and 20, the displacement of the first and second pin nodes 15 and 16 is suppressed, and the linear members 12, 13, 18, and 19 are made to resist the tensile force. It is said. Thus, according to the present embodiment, only a tensile force acts on each linear member 12, 13, 18, 19 constituting the reinforcing body 7 and a compressive force does not act with a simple configuration. A reinforced structure 1 for a simple building is realized.
[0033]
Moreover, according to this Embodiment, each linear member 12,13,18,19 is arrange | positioned so that each may form the substantially rhombus which makes each the one side, and the connecting material 20 is on the diagonal of this substantially rhombus. Is arranged. By adopting such a configuration, in the present embodiment, the connecting members 20 and 20 can be reliably brought into contact with each other, whereby the exchange of the compressive force C can be ensured in the contact plates 21 and 21. It can be carried out. Moreover, the building reinforcement structure 1 having such a function can be realized with a simple configuration.
[0034]
Furthermore, by configuring each part of the building reinforcement structure 1 as described above, it is possible to simplify the details of the joint between the frame 2 and the reinforcing body 7 as compared with a conventionally used brace or the like. In addition, the reinforcement body 7 can be easily replaced.
Further, since the reinforcing body 7 is realized by the simple configuration as described above, it is possible to reduce the installation cost while exhibiting the same deformation performance as the conventional brace. is there. Furthermore, since the reinforcement body 7 becomes lightweight, when installing in the building 1, it can lift up easily.
[0035]
Moreover, in this Embodiment, the reinforcement structure 1 of a building is installed as a brace in the frame 2. FIG. By adopting such a form for the reinforcing structure 1 of a building, it can be applied to any building regardless of scale, shape, or the like.
[0036]
Furthermore, in this Embodiment, since the reinforcement body 7 is comprised with the steel frame, it becomes possible to show the stable property when tensile force acts.
[0037]
In addition, in the said embodiment, you may make it employ | adopt another structure about the structure, material, etc. of each part of the reinforcement body 7 within the range which does not deviate from the main point of this invention.
For example, in the above-described embodiment, the shape and strength of each steel member constituting the reinforcing body 7 may be changed according to the scale and shape of the frame 2.
Moreover, in the said embodiment, you may make it give the function as a damping damper to the reinforcement structure 1 of a building by comprising each linear member 12,13,18,19 with low yield point steel.
Furthermore, light weight ground walls such as boards are arranged on both sides of the reinforcing structure 1 of the building of the above embodiment, and fireproof spraying is performed on these light weight ground walls to produce a lightweight seismic wall panel. Also good.
[0038]
[ Reference example ]
Next, a reference example of the present invention will be described.
Note that in the reference example described here, the same reference numerals are given to the same components as those in the above embodiment, and the description thereof will be omitted.
As shown in FIG. 4, the building reinforcing structure 31 in the present embodiment is composed of reinforcing bodies 32, 32 installed in the opening 6.
The reinforcing body 32 includes first to fourth linear members 12, 13, 18, and 19. Further, the first to fourth linear members 12, 13, 18, and 19 include the first and fourth linear members 12, 13, 18, and 19, respectively. The reinforcing body in the first embodiment in that it is pin-joined via the two pin fulcrums 9, 10 and the first and second pin nodes 15, 16 and is arranged so as to form a substantially rhombus. 7 in common.
The reinforcing body 32 is different from the above-described reinforcing body 7 in that connecting members 34 and 34 are provided for the first and second pin nodes 15 and 16, and oil is provided between the connecting members 34 and 34. A damper (damping damper) 35 is provided.
[0039]
FIG. 5 is an enlarged view showing the vicinity of the oil damper 35. As shown in the drawing, the oil damper 35 is composed of a cylinder 36 and a piston rod 37, and oil (damper material) (not shown) is loaded in the cylinder 36. The cylinder 36 and the piston rod 37 are connected to connecting members 34, 34, respectively.
[0040]
In the frame 2 provided with the reinforcing structure 31 of the building having such a configuration, an alternating force acts on the reinforcing bodies 32 and 32 in the event of an earthquake, as in the above embodiment . For example, a force in a direction indicated by an arrow r or s in FIG. 4 acts on the first and second pin nodes 15 and 16.
These forces in the r or s direction act on the cylinder 36 and the piston rod 37 of the oil damper 35 via the connecting members 34, 34, respectively, whereby the oil damper 35 expands and contracts and the frame 2 vibrates. It functions to absorb energy.
[0041]
In this way, in the above-described building reinforcement structure 31, the oil damper (seismic damper) 35 is provided between the connecting members 34, 34, so that the frame 2 can be reinforced. It is also possible to act so as to absorb the vibration energy of the frame 2.
[0042]
Further, since the oil damper 35 is provided at the position as described above, it is possible to give an amplified displacement to the oil damper 35 as compared to the interlayer displacement between the upper and lower beams 4 and 4 of the frame 2. Thus, the oil damper 35 can effectively exhibit its vibration control function.
[0043]
Furthermore, by configuring each part of the reinforcing structure 31 of the building as described above, the details of the joint part between the frame 2 and the reinforcing body 32 are simplified as compared with a conventionally used brace damper or the like. In addition, the reinforcing body 32 can be easily replaced.
[0044]
Further, since the reinforcing body 32 is realized by the simple configuration as described above, it is possible to reduce the installation cost while exhibiting the deformation and vibration control performance equal to or higher than that of the conventional brace damper or the like. Is possible. Furthermore, the reinforcing body 32 can be configured to be lightweight, and can be easily lifted when installed inside the building 1.
[0045]
Furthermore, since the reinforcement structure 31 of a building is installed as a brace in the frame 2, it can be applied to any building regardless of scale, shape, etc., and can be stored in a wall surface. In addition, there is no worry of obstructing the floor plan in the building 2.
[0046]
In the above reference example , other configurations may be adopted.
For example, the damping damper provided between the connecting members 34, 34 is not limited to the oil damper 35, but may be a viscous damper formed of another viscous body or viscoelastic body as a damper material. Further, instead of the oil damper 35, a low yield point steel is interposed between the connecting members 34, 34, or the connecting members 34, 34 are deformed in the separation / approaching direction (r direction or s direction in FIG. 4). A steel material damper may be formed between the connecting materials 34 and 34 by interposing a steel material processed into an easy shape.
[0047]
【The invention's effect】
As described above, in the reinforcing structure for a building according to claim 1 , the first and second linear members are pin-joined to the first pin fulcrum, and these first and second linear members. Is connected to the third and fourth linear members pin-joined to the second pin fulcrum via the first and second pin nodes, respectively, and each of the first and second pin nodes The connecting material is provided with contact plates that are opposed to each other and can be separated from each other, and the first and second connecting materials are connected to the first and second pin nodes, respectively. It is configured to be held so as to be movable in the same axial direction in directions away from each other with displacement in directions away from each other.
Moreover, in the reinforcement structure of the building which concerns on Claim 2, it is set as the structure by which the some reinforcement body is arrange | positioned in K shape in the opening part.
As a result, when a force acts on the reinforcing body in the tensile direction, the connecting members are brought into contact with each other, so that the displacement of the first and second pin nodes is suppressed, and each linear member is subjected to the tensile force. Trying to resist. As described above, according to the reinforcing structure for a building of the present invention, when the both ends of the reinforcing body are displaced in the direction of separating (tensile direction) with a simple configuration, the reinforcing body resists the tensile force. On the contrary, when the both ends of the reinforcing body are displaced in a direction in which the both ends approach (compression direction), the reinforcing body is displaced and deformed in a direction in which the first and second pin nodes are separated from each other. Thereby, it can prevent that compressive force acts on each component of a reinforcement. By adopting such a mechanism, when the reinforcing body is made of a steel frame material, it is possible to prevent the occurrence of buckling in each component and to be stable against tension. It becomes possible to make maximum use of the properties of the material, and to make maximum use of the properties of the steel-based material that are stable against tension.
[0049]
In the reinforcing structure for a building according to claim 3, the first to fourth linear members are arranged so as to form a substantially rhombus each having one side thereof, and a connecting material is formed on a diagonal line of the substantially rhombus. Is arranged. By adopting such a configuration, when the first and second pin nodes are displaced so as to approach each other, it is possible to cause the connecting materials to reliably contact each other and to exchange stress. With this, the invention of claim 1 can be satisfactorily realized.
[0050]
According to the reinforcing structure of a building according to claim 4, since the reinforcing body is installed as a brace, it can be applied to any building from a one-story building to a super high-rise building. Moreover, the installation can also be performed easily.
[0051]
According to the reinforcing structure for a building according to the fifth aspect, since the reinforcing body is made of a steel frame, it is possible to obtain stable characteristics against tensile force.
[Brief description of the drawings]
FIG. 1 is a front view of a reinforcing structure for a building schematically showing an embodiment of the present invention.
FIG. 2 is a front view for illustrating the action of the reinforcing structure for a building shown in FIG. 1 during an earthquake.
FIG. 3 is a partially enlarged view of the same.
FIG. 4 is a front view of a building reinforcing structure schematically showing a reference example of the present invention.
5 is an enlarged perspective view showing an oil damper in the reinforcing structure for a building shown in FIG. 4. FIG.
[Explanation of symbols]
1 Reinforcement structure of building 2 Frame 3 Column 4 Beam 6 Opening
7 Reinforcing body 9 First pin fulcrum 10 Second pin fulcrum 12 First linear member 13 Second linear member 15 First pin node 16 Second pin node 18 Third linear member 19 Fourth straight line Element
20 binders

Claims (5)

Installed in the opening surrounded by the left and right pillars and upper and lower beams in the frame, one end of which is pin-bonded to a part of the frame, and the other end is pin-bonded to the other part of the frame Provided with a reinforced body,
The reinforcing body is
First and second linear members each having one end thereof supported by a first pin fulcrum provided in a part of the frame, and the other ends being first and second pin nodes,
Third and fourth straight lines having one end connected to each of the first and second pin nodes and the other ends supported by a second pin fulcrum provided in another portion of the frame. A member,
One end of each of the first and second pin nodes is connected, and a contact plate is provided at the other end so that the contact plates are opposed to and in contact with each other. First and second connecting members provided on a straight line connecting the pin nodes of
With
The contact plates that are opposed to each other can be separated from each other, and the first and second connecting members are separated from each other in accordance with displacement of the first and second pin nodes away from each other. The reinforcing structure of a building is characterized in that it is held so as to be movable in the same axial direction . The building reinforcing structure according to claim 1, wherein a plurality of the reinforcing bodies are arranged in a K shape in the opening . 3. The building reinforcing structure according to claim 1 , wherein the first, second, third, and fourth linear members are viewed from a direction orthogonal to a plane formed by the opening, A reinforcing structure for a building, which is arranged so as to form a substantially rhombus, each of which is on one side, and the connecting material is arranged on a diagonal line of the rhombus.   It is the reinforcement structure of the building described in any one of Claim 1 to 3, Comprising: The said reinforcement body is installed as a brace in the said opening part, The reinforcement structure of the building characterized by the above-mentioned.   5. The building reinforcing structure according to claim 1, wherein the reinforcing body is formed of a steel frame. 6.

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