JP2004238826A - Storage type aseismic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage type aseismic device which rapidly appears in an earthquake and acts an aseismic function. <P>SOLUTION: One of brace elements bifurcated in the longitudinal direction is arranged along the inside face of a column. A latching mechanism which positions the brace element in a containing state along the inside face of the column and release by a controller is provided. The other brace element is arranged along the inside face of a beam. A latching mechanism in which the brace element is positioned in a containing state along the inside face of the beam and released by a controller is provided. Joint connection mutually connected is installed at the free side end of each brace element. An earthquake detection sensor detecting an earthquake input of a building and a latch controller releasing the latching mechanism is set when the earthquake detection sensor detecting an earthquake input of the building and the latch controller releasing the latching mechanism when the earthquake detection sensor detects an initial micromotion are installed. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention belongs to the technical field of a storage-type seismic device which is quickly housed in an earthquake-free state so as not to disturb the building space and rapidly appears during an earthquake to perform a seismic function, and more specifically, a brace-type storage device. Type-type earthquake-resistant device.
[0002]
[Prior art]
BACKGROUND ART Earthquake-resistant elements such as earthquake-resistant walls and braces are arranged mainly in the plane of a beam-column structure of a building or the like as structural skeleton elements that very effectively resist horizontal input to a building during an earthquake. However, in normal times other than the time of an earthquake, the earthquake-resistant walls and braces are troublesome enough to divide the space of the building and hinder or worsen the effective use of the space. Moreover, most of the service period is during a non-earthquake, during which time the seismic elements such as the above-mentioned earthquake-resistant walls and braces are useless.
[0003]
When performing earthquake-resistant reinforcement of an existing building that does not have sufficient seismic performance in the piloti style, if a earthquake-resistant wall or brace is placed in a space on the first floor of the building that originally had no seismic elements, spatial flexibility is impaired. This often results in a negative effect on the value of the building.
Alternatively, it may be necessary to renovate or renovate the first floor space into an attractive commercial space by removing the existing walls and braces on the first floor of the existing building. Especially in an area where relatively small buildings are densely packed, such as Ginza in Tokyo, the first floor (or the second or more floor) of an adjacent building is converted into a shopping mall that can cross each other. It may be necessary to reconstruct the space. In such a case, if it is possible to prepare a storage type seismic device that is stored so as not to disturb the building space during normal times when there is no earthquake, and that appears quickly during an earthquake and acts as a seismic function, it is very convenient and convenient. In addition to being superior, it can increase the added value of the building or increase the profit in rebuilding the local space.
[0004]
As such a prior art, Patent Literature 1 discloses an invention relating to an earthquake-resistant reinforcing structure in which a brace-type reinforcing member that appears only when an earthquake is detected is provided at an opening of a building. A brace material in which a brace having a length equal to the diagonal line of the opening is bisected and connected by a hinge so as to be freely bent is disposed along a column and a beam in a housed state, and one end of the brace material is held by using a holding force of a magnet. It is kept in the stowed state by the seismic actuator. When the holding force of the seismic operation device is released by the seismic force larger than the holding force of the seismic operation device, the brace material appears in the opening by natural fall due to its own weight, and the other end side is locked by the locking device. It is a mechanism that is fixed and exhibits the seismic function as a brace.
[0005]
The invention described in Patent Literature 2 automatically forms a brace made of a wire in the plane of a beam-to-column frame when shaking or vibration exceeding a predetermined level acts on the building due to an earthquake or the like, and deforms the building. And a device for preventing collapse. It has a vibration sensing member for sensing the vibration of the building, and a winch activated by the vibration sensing member. The winch pulls a wire (brace material) to form a diagonal brace in the plane of the beam-column structure. It is a configuration to make it appear.
[0006]
[Patent Document 1] Japanese Patent No. 2749285 [Patent Document 2] Japanese Patent No. 3189086
[Problems to be solved by the present invention]
According to Patent Literatures 1 and 2, the technical idea of a retractable seismic device that appears when an earthquake is detected is already known.
However, in the case of the brace-type seismic reinforcement structure according to Patent Literature 1, the holding force of the brace material by the permanent magnet employed in the seismic operation device may change (degrade) during a long service period. Performance guarantee is difficult. In addition, since the brace material is configured to appear at the opening by natural fall due to the action of its own weight, there is a concern that the movable portion may rust over a long period of time and the reliability is questioned.
The collapse prevention device described in Patent Literature 2 has a configuration in which a reaction force with respect to an axial force (tensile force) that a brace made of wire bears during an earthquake is expected to be a winding force of a winch, and the intended brace is used. I doubt if it will work.
[0008]
It is an object of the present invention to provide an earthquake-resistant device that appears immediately when an earthquake is detected and performs an earthquake-resistant function, and can reliably expect mechanically appearing operation, and can easily set the magnitude of an earthquake force to appear. An object of the present invention is to provide a retractable seismic device that is flexible and capable of accurately and reliably maintaining conditions for exerting a brace function.
[0009]
[Means for Solving the Problems]
As means for solving the above-mentioned problem of the prior art, a retractable seismic device according to the invention of claim 1 is provided.
A brace-type storage type seismic device installed in the plane of a pillar-column structure of a building,
One brace element that divides the brace into two in the length direction is arranged along the inner surface of the column, and its lower end is rotatably supported in the in-plane direction of the beam-column frame by a hinge mechanism installed near the base of the column. A latch mechanism for positioning the brace element in a stored state along the inner surface of the column and releasing the latch mechanism by a control device described later, and a starting means for rapidly rotating the brace element when the latch mechanism is released during an earthquake. Having,
The other brace element is arranged along the inner surface of the beam, and one end of the brace element is rotatably supported in the in-plane direction of the column-beam frame by a hinge mechanism of a support member fixed to the beam. That a latch mechanism is installed, which is positioned in the retracted state along the inner surface of the beam and released by a control device described below,
The support member is provided with a stopper for positioning the brace element at a predetermined brace arrangement angle when the latch mechanism of the other hinge element is released, and a free side of the two brace elements. At the end, there is provided a joint connection which is coupled to each other so that axial force can be transmitted at the position of the stopper,
An earthquake detection sensor for detecting an earthquake input of the building, and a latch control device for releasing the latch mechanism when the earthquake detection sensor detects the initial tremor of the earthquake, and the released two brace elements are provided by the stopper. The joints are connected to each other at a position to exhibit an anti-seismic function.
[0010]
The storage type earthquake-resistant device according to the invention described in claim 2 is:
A brace-type storage type seismic device installed on the inner surface of a column-beam frame of a building,
A rail is installed in the longitudinal direction along the inner surface of the column or beam, and a movable bearing that runs along the rail is installed, and a hinge mechanism provided on the movable bearing and near the upper corner or lower corner of the column. Between the fixed hinge mechanism, both ends of the brace provided with an expansion and contraction mechanism in the middle part are rotatably connected in the in-plane direction of the beam-column frame,
The movable bearing is provided with a connecting means integrated with a supporting member to be described later, and a wire having one end connected to the movable bearing is wound around a wire winding device of a supporting member installed on the inner surface of a column or a beam. A latch mechanism that positions the movable bearing at a storage position close to one end of the rail and that is released by a control device described below is installed;
An earthquake detection sensor that detects an earthquake input of the building, and a latch control device that releases the latch mechanism when the earthquake detection sensor detects an initial tremor of the earthquake, and the released movable bearing is moved by a wire winding device. The brace is pulled and connected to the support member by the connecting means, and the brace exerts a seismic function.
[0011]
The invention described in claim 3 is the storage-type seismic device according to claim 1 or 2,
An alarm device that issues an alarm in advance when the retractable seismic device appears from the storage state to the operating state is installed, and when the earthquake detection sensor detects the initial tremor of the earthquake, an alarm is issued ahead of the latch control device. The device is configured to operate.
[0012]
The invention described in claim 4 is the storage-type earthquake-resistant device according to any one of claims 1 to 3,
The support member is installed at the center of the lower surface of the upper beam, the brace is installed in a pair symmetrically to the left and right of the support member, and the brace appears in a C shape between the upper and lower beams. It is characterized by the following.
[0013]
The invention described in claim 5 is a storage-type earthquake-resistant device according to any one of claims 1 to 3,
Instead of the detection signal of the earthquake detection sensor or together with the detection signal of the earthquake detection sensor, the detection signal of the early sensing of the wide area network is used for the operation input of the latch control device and the alarm device.
[0014]
The invention described in claim 6 is the storage-type seismic device according to any one of claims 1 to 5,
The outer periphery of the brace element or the brace is covered with a cushioning material such as polyurethane foam, or an instantaneous protective barrier such as an air bag is attached to prevent a disaster at the time of the emergence operation. .
[0015]
Embodiments and Examples of the Invention
Hereinafter, embodiments of the storage-type earthquake-resistant device according to the first to sixth aspects of the present invention will be described with reference to the drawings.
First, FIGS. 1 and 2 show an embodiment of a retractable seismic device according to the first aspect of the present invention. This is implemented as a brace-type retractable seismic device installed in the plane of a column-beam frame formed by columns 1 and beams 2 of a building.
[0016]
One of the brace elements 3 obtained by bisecting the brace in the length direction is arranged along the inner surface of the column 1, and the lower end thereof is firmly fixed near the root of the column 1, more specifically, at the lower corner of the column-beam frame. The hinge mechanism 4 is installed so as to be rotatable in the in-plane direction of the beam-column structure. The brace element 3 is positioned in a substantially parallel storage state along the inner surface of the column 1, and a latch mechanism 5 that is released by a control device described later is provided on the upper portion of the column 1. Further, when the latch mechanism 5 is released during an earthquake, as a starting means for rapidly pushing out the brace element 3 and rotating in the direction of arrow A, in the illustrated example, a compression type spring 6 is provided on the inner surface of the column 1 (or On the side of the brace element 3).
[0017]
The other brace element 7 is arranged along the lower surface of the upper beam 2, and one end of the brace element 7 is moved in the in-plane direction of the column-beam frame by a hinge mechanism 9 of a support member 8 fixed to the lower bottom of the beam 2. It is rotatably supported. The brace element 7 is positioned in a substantially parallel storage state along the lower surface of the upper beam 2, and a latch mechanism 10 that is released by a control device described later is installed on the beam 2.
[0018]
When the latch mechanism 10 of the other brace element 7 is released, the support member 8 is provided with a hinge mechanism 9 by the free fall of the brace element 7 or the function of a separately provided starting means as necessary. A stopper 11 is provided for stopping and positioning at a predetermined brace arrangement angle (for example, a 45 ° direction) when rotating around the center. At the free ends of the two brace elements 3 and 7, there is provided a joint connection 12 which is united at the position of the stopper 11 and connected to each other so as to be able to transmit an axial force.
[0019]
An example of the joint 12 is shown in FIG. This is provided with a load block 12c for transmitting an axial force at a free end of one brace element 3, and a notch slit 12b having a width through which the one brace element 3 passes is provided on a free end side of the other brace element 7. And a glove 12a into which the force applying block 12c fits closely. The brace element 7 has been rotated around the hinge mechanism 4 with a slight delay with respect to the other brace element 7 that has been rotated earlier about the hinge mechanism 9 and stopped at the position of the stopper 11, and has reached the position where the brace element 7 waits. One brace element 3 passes through the notch slit 12b of the other brace element 7 as it is, and the force block 12c fits tightly into the glove 12a to enable transmission of axial force. They are interconnected. However, the joint connection 12 at the free side end of the brace elements 3 and 7 may be configured so as to be united at the position of the stopper 11 and connected to each other so as to transmit an axial force. Not as long. In some cases, it can be implemented with a more mechanical configuration.
[0020]
Next, a latch control device 13 including an earthquake detection sensor for detecting an earthquake input entering the building, and releasing the latch mechanisms 5 and 10 when the earthquake detection sensor detects an initial tremor of an earthquake is installed. 5 and 10 are connected. The control circuit of the latch control device 13 releases the latch mechanism 10 on the beam side in advance, and latches at a timing at which one brace element 3 catches up with a slight time difference after the other brace element 7 is stopped by the stopper 11. It is assembled so as to release the mechanism 5. Further, an alarm device 15 is provided for notifying neighboring people in advance that a brace will appear carelessly. The alarm device 15 is configured to be linked with an earthquake input detected by the above-mentioned earthquake detection sensor. When an earthquake detection sensor detects a seismic wave, a warning is generated immediately by a warning sound such as a siren or a warning light such as a red lamp. Reference numeral 16 in FIG. 1 indicates a ceiling.
[0021]
In short, when the earthquake detection sensor detects the initial tremor of the earthquake, the latch control device 13 immediately releases the latch mechanisms 10 and 5 sequentially. Then, the other brace element 7 released earlier is first rotated to the position of the stopper 11 and stopped there. Subsequently, the released one brace element 3 is rapidly rotated by the pushing force of the spring 6 as the starting means to reach a position where it is connected to the other brace element 7 and provided at the free ends of both. The joint ports 12 are connected to each other so that the axial force can be transmitted, and immediately enter the state of exerting the anti-seismic function. Therefore, the seismic performance of the building is sufficiently given. In order to determine the rotation limit position of the one brace element 3, it is preferable to provide a stopper 14 on the hinge mechanism 4. As described above, the latch mechanisms 5 and 10 only need to be an automatic holder mechanism driven under the control of the latch control device 13, and a detailed description of the structure will be omitted.
[0022]
Incidentally, it is known that the duration of the initial tremor of an earthquake varies depending on the distance from the earthquake source. Generally, it is said to be 1 second for a distance of 10 km from the earthquake source. The propagation speed varies depending on the underground structure and the like, but the P wave is around 6 to 8 km per second, and the S wave is around 3 to 4 km per second. At a distance of 100 km from the earthquake source, the seismic sensor can detect the seismic wave about 10 seconds or more before the large shaking. However, in the case of the direct type, where there is no time margin, it is desired that the appearance of the brace and the display of the seismic function be completed in about 1 second at most. Therefore, an embodiment using an instantaneous force such as an electromagnetic force or an explosive is effective as a starting means instead of the spring 6.
[0023]
Next, FIGS. 3 and 4 show an embodiment of a stowable seismic device according to the second aspect of the present invention.
This embodiment is also a brace-type retractable seismic device installed in the plane of a column-beam frame of a building. A rail 20 is provided along the lower surface of the upper beam 2 in the longitudinal direction thereof, and a movable bearing 21 running along the rail 20 is provided. An intermediate portion is provided between a hinge mechanism 22 provided on the movable bearing 21 and a hinge mechanism 24 provided on a fixed support 23 installed near the inner base of the column 1, more specifically, at a lower corner. The upper and lower ends of a brace 25 provided with a telescopic mechanism 26 are connected rotatably in the in-plane direction of the beam-column structure.
[0024]
The movable bearing 21 is provided with a connecting means 27 which is combined with and integrated with a support member 29 described later. A wire 28 having one end connected to the movable bearing 21 is wound around a wire winding device 30 installed on a support member 29 installed at the center of the lower surface of the upper beam 2. Then, the movable bearing 21 is positioned at a storage position close to the inner surface of the column 1 substantially in parallel, and a latch mechanism 31 released by a control device described later is installed on the upper portion of the column 1.
[0025]
Further, there is provided a latch control device 13 which is provided with an earthquake detection sensor for detecting an earthquake input to the building and which releases the latch mechanism 31 when the earthquake detection sensor detects an initial tremor of an earthquake. When the latch mechanism 31 is released, the movable bearing 21 is rapidly pulled by the wire take-up device 30 and firmly connected to the support member 29 by the connecting means 27, so that the brace 25 immediately exhibits the seismic function. Become.
[0026]
Therefore, the wire winding device 30 is configured to be quickly started (operated instantaneously) by the latch control device 13 that has received the detection signal when the earthquake detection sensor generates a signal that detects the initial tremor of the earthquake. ing. Alternatively, the present invention is implemented as a mechanical device that sufficiently accumulates an instantaneous acting force (for example, a rotational force such as a coil spring) in advance and waits.
As shown in FIG. 4, the telescopic mechanism 26 at the intermediate portion of the brace 25 has a cylinder structure in which a piston portion 25 a provided at an end of the brace 25 slides. At the stage when 27 is coupled to the support member 29, the piston 25a just hits the end face 26a of the cylinder, and the brace 25 transmitting the necessary and sufficient axial force (tensile force) is completed.
Although not particularly shown, the connecting means 27 is only required to be connected to the support member 29 in a state that can withstand the axial force acting on the brace 25 and to have a shaft coupling having a retaining mechanism. The installation of the alarm device 15 is the same as in the embodiment of FIG.
[0027]
In the embodiment of FIGS. 1 and 3, the support member 8 or 29 is installed at the center of the upper beam 2, and the brace elements 3 and 7 or the brace 25 are symmetrically arranged at the left and right sides. The configuration in which the braces appear between the upper and lower beams 2 and 2 in a C shape is shown (the invention according to claim 4), but the present invention is not limited to this configuration. For example, as shown in FIG. 5, the support member 29 may be installed at the upper right corner of the beam-column frame, and the brace 25 having the extension mechanism 26 at the middle may appear in a diagonal direction that rises to the right. . Alternatively, as shown in FIG. 6, a brace 25 having a telescopic mechanism 26 at an intermediate portion is disposed substantially parallel to the lower surface of the upper beam 2, and the left end thereof is connected to the hinge mechanism 24 of the fixed bearing 23, and the right end is formed. Is connected to the hinge mechanism 22 of the movable bearing 21. The rail 20 is installed vertically along the inner surface of the right pillar 1, and the movable bearing 21 is moved downward along the rail 20. That is, a configuration in which the movable support 21 is pulled by the wire take-up device 30 of the support member 29 fixed to the lower right corner (just a configuration in which the configuration in FIG. 5 is turned by 90 °) can be implemented.
Further, the brace or the brace element may be installed in a double configuration in the plane of the beam-column frame, and may be implemented in a configuration that appears in a so-called brace structure (X-shape).
The support member 8 or 29 may be installed at the center of the lower beam 2 so as not to obstruct the opening, and the configuration may be such that an inverted C-shaped brace appears.
[0028]
As the earthquake detection sensor adopted in each of the above embodiments, a sensor already installed in a building can be used. However, instead of the detection signal of the earthquake detection sensor or together with the detection signal of the earthquake detection sensor, the detection signal by the early sensing technology of the wide area network may be implemented in a configuration that is used to control the latch control device 13 and the alarm device 15. It is possible (the invention described in claim 5).
[0029]
Although not shown in the drawings, the brace elements 3 and 7 or the brace 25 appearing instantaneously and inadvertently as described above serve as a means for preventing the nearby persons from being injured or the articles being damaged as much as possible. , The outer periphery of the brace elements 3, 7 or the brace 25 is covered with a cushioning material such as polyurethane foam, or an instantaneous protective barrier device such as an air bag is attached to minimize the occurrence of a disaster during the emergence operation. An embodiment for preventing or preventing is also preferable (the invention described in claim 6).
[0030]
The column-beam frame may have any of a steel structure, a reinforced concrete structure, and a wooden structure. The materials of the brace elements 3 and 7 and the brace 25 may be any of a steel frame (shape steel, PC steel bar, steel bar, and the like), a reinforced concrete structure, a wooden structure, and a fiber reinforcing material.
[0031]
[Effects of the present invention]
The storage-type seismic device according to the first to sixth aspects of the present invention hides in the storage position and does not fill the opening of the building during a non-earthquake, so that relatively small buildings such as Ginza in Tokyo are densely packed. The present invention can be applied to the construction of a shopping mall in which the first floor portion of an adjacent building can be moved to and from each other in a local area, thereby contributing to the reconstruction of the local space. Alternatively, by removing the walls and braces on the first floor of a building in an area where small office buildings and commercial buildings are densely packed, the first-floor space of the adjacent building can be connected continuously without impairing the seismic performance, and an attractive regional integrated commercial It can also be used to create space. It can also be implemented to increase the added value of the building by improving the seismic resistance without deteriorating the performance of the piloti type building.
[Brief description of the drawings]
FIG. 1 is an elevational view showing an embodiment of a stowable seismic device according to the present invention.
FIG. 2 is a partial view showing an example of a joint connection of a brace element.
FIG. 3 is an elevation view showing an embodiment of a stowable seismic device according to the second aspect of the present invention.
FIG. 4 is a cross-sectional view illustrating an example of a brace expansion and contraction mechanism.
5 is an elevational view showing a different embodiment of the retractable seismic device of FIG. 3;
FIG. 6 is an elevation view showing still another embodiment of the retractable seismic device of FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Column 2 Beam 3 One brace element 4 Hinge mechanism 5 Latch mechanism 6 Spring (starting means)
7 Other brace element 8 Support member 9 Hinge mechanism 10 Latch mechanism 11 Stopper 12 Joint connection 13 Latch control device 20 Rail 21 Movable support 22 Hinge mechanism 23 Fixed support 24 Hinge mechanism 26 Telescopic mechanism 25 Brace 27 Connecting means 28 Wire 29 Support Member 30 Wire take-up device 31 Latch mechanism 15 Alarm device

Claims (6)

A brace-type storage type seismic device installed in the plane of a pillar-column structure of a building,
One brace element that divides the brace into two in the length direction is arranged along the inner surface of the column, and its lower end is rotatably supported in the in-plane direction of the beam-column frame by a hinge mechanism installed near the base of the column. A latch mechanism for positioning the brace element in a stored state along the inner surface of the column and releasing the latch mechanism by a control device described later, and a starting means for rapidly rotating the brace element when the latch mechanism is released during an earthquake. Having,
The other brace element is arranged along the inner surface of the beam, and one end of the brace element is rotatably supported in the in-plane direction of the column-beam frame by a hinge mechanism of a support member fixed to the beam. That a latch mechanism is installed which is positioned in a stored state along the inner surface of the beam and released by a control device described later;
The support member is provided with a stopper for positioning the brace element at a predetermined brace arrangement angle when the latch mechanism of the other hinge element is released, and a free side of the two brace elements. At the end, there is provided a joint connection which is coupled to each other so that axial force can be transmitted at the position of the stopper,
An earthquake detection sensor for detecting an earthquake input of the building, and a latch control device for releasing the latch mechanism when the earthquake detection sensor detects the initial tremor of the earthquake, and the released two brace elements are provided by the stopper. Combining the joints at a location to exhibit an anti-seismic function;
Each is characterized by a storage-type earthquake-resistant device. A brace-type storage type seismic device installed in the plane of a pillar-column structure of a building,
A rail is installed in the longitudinal direction along the inner surface of the column or beam, and a movable bearing that runs along the rail is installed, and a hinge mechanism provided on the movable bearing and near the upper corner or lower corner of the column. Between the fixed hinge mechanism, both ends of the brace provided with an expansion and contraction mechanism in the middle part are rotatably connected in the in-plane direction of the beam-column frame,
The movable bearing is provided with a connecting means integrated with a supporting member to be described later, and a wire having one end connected to the movable bearing is wound around a wire winding device of a supporting member installed on the inner surface of a column or a beam. And a latch mechanism that positions the movable bearing at a storage position close to one end of the rail and is released by a control device described below is installed.
An earthquake detection sensor that detects an earthquake input of the building, and a latch control device that releases the latch mechanism when the earthquake detection sensor detects an initial tremor of the earthquake, and the released movable bearing is moved by a wire winding device. Being pulled and connected to the support member by the connecting means, the brace exerts the seismic function,
Each is characterized by a storage-type earthquake-resistant device. An alarm device that issues an alarm in advance when the retractable seismic device appears from the storage state to the operating state is installed, and when the earthquake detection sensor detects the initial tremor of the earthquake, an alarm is issued ahead of the latch control device. The retractable seismic device according to claim 1 or 2, wherein the device is configured to operate. The support member is installed at the center of the lower surface of the upper beam, the brace is installed in a pair symmetrically on the left and right sides of the support member, and the brace appears in a C shape between the upper and lower beams. The stowable seismic device according to any one of claims 1 to 3, characterized in that: The detection signal of the early sensing of the wide area network is used for the operation input of the latch control device and the alarm device instead of the detection signal of the earthquake detection sensor or together with the detection signal of the earthquake detection sensor. A storage-type earthquake-resistant device according to any one of Items 1 to 3. The brace element or the outer periphery of the brace is covered with a cushioning material such as polyurethane foam, or an instantaneous protective barrier such as an air bag is attached, so that a disaster during emergence operation is prevented. A retractable seismic device according to any one of claims 1 to 5.

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