JP2012127087A - Building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building that reduces an impact on the building even when a malfunctioning of a vibration control device occurs.SOLUTION: A freeing mechanism for releasing the fixation of dampers of a vibration control device to a building, and solenoids for activating the freeing mechanism are provided to detect an abnormal damper whose load is equal to or above a predetermined threshold (104) and to release the fixation of the damper to the building 10 (106) by activating the solenoid for the abnormal damper. An arithmetic operation of a horizontal rigidity balance (torsion) is also performed (108) and, if the torsion is equal to or above a predetermined value (110), a solenoid for another damper is activated to release the fixation of the other damper to the building (112, 114).

Description

  The present invention relates to a building, and more particularly, to a building including a vibration control device that can be fixed to the building.

  Various techniques for attenuating vibration using dampers and actuators have been proposed as techniques for reducing the shaking of buildings due to earthquakes.

  For example, in the technique described in Patent Document 1, it is proposed that when an earthquake occurs and vibrates along the horizontal direction, the controller controls the displacement of the rod of the actuator to attenuate the vibration.

  Further, in the technique described in Patent Document 1, a failure is made to slide the fixed part before the load acting on the actuator exceeds the allowable load so that the actuator does not break due to the load exceeding the allowable load. It has been proposed to provide a safe mechanism.

JP 2010-106880 A

  However, since the technology described in Patent Document 1 includes a fail-safe mechanism that releases the load so that the actuator is not damaged, the actuator can be prevented from being damaged, but a failure has occurred in the actuator. If failsafe is not considered. In other words, if an earthquake occurs when the actuator is malfunctioning, the fail-safe mechanism will operate, but a load close to the allowable load of the actuator will continue to act on the outer wall of the building. There is a risk of damage to the outer wall, and there is room for improvement.

  The present invention has been made in consideration of the above facts, and an object of the present invention is to make it possible to reduce the influence on a building even when a malfunction occurs in a vibration damping device.

  In order to achieve the above object, the building according to claim 1 is releasably fixed to the inside of the building, and in the fixed state, the vibration control device that attenuates the vibration of the building due to an earthquake and controls the vibration, A release mechanism for releasing the fixation between the device and the building, a detection means for detecting a predetermined condition for releasing the front fixation by the release mechanism, and the vibration damping device when the predetermined condition is detected by the detection means And a control means for controlling the release mechanism so as to release the fixation with the building.

  According to the first aspect of the present invention, the vibration damping device is releasably fixed inside the building, and the vibration of the building due to the earthquake is attenuated and vibration-damped in the fixed state. And release the building. For example, as in the invention described in claim 4, the vibration damping device applies a hydraulic damper having a rod connected to the building, and the release mechanism releases the fixation between the rod and the building using an actuator or the like. A mechanism can be applied.

  Further, in the detection means, a predetermined condition that should be released by the release mechanism is detected. The detection means detects, for example, at least one of a vibration damping device abnormality, a load on the vibration damping device above a predetermined level, and a stroke of the vibration damping device above a predetermined level as the predetermined condition.

  In the control means, when the predetermined condition is detected by the detection means, the release device is controlled so as to release the fixation between the vibration control device and the building.

  In other words, when an abnormality occurs in the vibration control device, a load greater than a predetermined value is applied, or a stroke exceeds the predetermined value, the release mechanism is controlled to release the fixation between the vibration control device and the building. Therefore, even when a problem occurs in the vibration control device, the influence on the building can be reduced.

  As in the second aspect of the present invention, a plurality of vibration control devices are provided at different positions inside the building, and the control means should release the fixing when a predetermined condition is detected by the detection means. Based on the position of the vibration control device, the release mechanism may be controlled so as to release other vibration control devices so that the twisting of the building is reduced. In this case, as in the third aspect of the invention, the control means releases the fixation of the other damping device in consideration of the eccentricity based on the horizontal rigidity change of the building due to the release of the release mechanism. Thus, the release mechanism may be controlled. As a result, when the damping device and the building are unlocked by the release mechanism, the horizontal stiffness of the building may change due to the release and the building may be easily twisted. This makes it possible to reduce the twisting of the building.

  Further, the release mechanism has a swinging member that is swingably provided between the vibration control device and the building, and swings the swinging member. You may make it apply the structure which cancels | releases fixation with a building.

  As described above, according to the present invention, it has a controllable configuration so as to release the fixation between the building and the vibration damping device when a predetermined condition for releasing the fixation between the building and the vibration damping device is detected. Therefore, there is an effect that it is possible to reduce the influence on the building even when a failure occurs in the vibration control device.

It is a figure which shows the outline of the building concerning embodiment of this invention. It is a figure which shows schematic structure of the damping device provided in the building concerning embodiment of this invention. It is a figure which shows the structural example of the free mechanism provided in the damper. It is a block diagram which shows the structure of the control system of the damping device provided in the building concerning embodiment of this invention. It is a flowchart showing the flow of a process at the time of performing a fail safe program in the vibration damping device concerning embodiment of this invention. (A) shows an example in which two vibration control devices are provided in the building, (B) shows the movement of the rigid core when the free mechanism is operated due to an abnormality of the damper, and (C) shows the free of other dampers. It is a figure which shows the example which actuated the mechanism and returned rigid core. It is a figure which shows the other structural example of the free mechanism provided in the damper.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing an outline of a building according to an embodiment of the present invention.

  The building according to the embodiment of the present invention will be described by taking a housing of a unit building composed of a plurality of building units 12 (eight in FIG. 1) as an example, but is not limited to a unit building, and other structures. You may make it apply the building of.

  For convenience of explanation, names are given to the members of the building unit 12. The building unit 12 includes four pillars 14, two sets of long and short ceiling beams 16 and 18 arranged in parallel to each other, and two sets of long and short sets arranged parallel to the ceiling beams 16 and 18 in the vertical direction. The floor girder 20 and 22 are provided, and the end portion of the beam is welded to a ceiling and a floor joint to form a ramen structure. However, the unit configuration is not limited to the above, and another box-shaped frame structure may be used.

  In the present embodiment, channel steel (grooved steel) having a U-shaped cross section is used for the ceiling beams 16 and 18 and the floor beams 20 and 22.

  The building unit 12 includes a ceiling frame 24 and a floor frame 26 assembled in a rectangular frame shape, and is configured such that four pillars 14 are erected between them. The ceiling frame 24 includes ceiling joints (columns) 27 at the four corners, and ends of the ceiling beams 16 and 18 having different lengths are welded to the ceiling joints 27.

  Similarly, the floor frame 26 includes floor joints (columns) 28 at four corners, and the longitudinal ends of the floor beams 20 and 22 having different lengths are welded to the floor joint 28.

  Then, the upper and lower ends of the column 14 are rigidly joined by welding between the ceiling joint portion 27 and the floor joint portion 28 arranged facing each other in the vertical direction, and the building unit 12 is temporarily fixed by bolts. Composed.

  Next, a vibration control device provided in the building 10 according to the embodiment of the present invention will be described. FIG. 2 is a diagram showing a schematic configuration of the vibration damping device provided in the building 10 according to the embodiment of the present invention.

  As shown in FIGS. 1 and 2, the vibration damping device 30 provided in the building 10 according to the embodiment of the present invention is provided between the ceiling beam 16 and the floor beam 22. Note that it may be provided between the floor beam 20 and the ceiling beam 18.

  The vibration damping device 30 according to the present embodiment includes a first extending member 32, a damper 34, and a second extending member 36, which will be described below. In addition, although the structure of the damping device 30 is demonstrated as an example, it is not limited to this, It is good also as another structure.

  As shown in FIG. 2, on the upper surface of the floor girder 22, a first extending member 32 constituting the vibration damping device 30 is installed.

  The first extending member 32 includes a first column member 38 made of steel that extends in the vertical direction and a second column member 40 that is inclined with respect to the first column member 38. The upper end of the second column member 40 is welded to the upper side surface of the first column member 38. Note that the first extending member 32 may have another shape.

  A flange plate 42 is attached to the lower end of the first column member 32 to be attached to the floor beam 22. A flange plate 42 is similarly welded to the lower end of the second column member 40.

  Although not shown in FIG. 2, a frame-shaped bracket made of a steel plate is inserted inside the floor beam 22. The upper surface of the bracket is the upper portion of the floor beam 22, and the lower surface of the bracket is the floor beam 22. The floor girder is reinforced in close contact with the lower plate.

  The flange plate 42, the upper plate portion of the floor girder 22 and the upper portion of the bracket are connected to each other with bolts (not shown), and the lower plate portion of the floor girder 22 and the lower portion of the bracket are anchor bolts fixed to the foundation 44. It is fixed with.

  A first damper mounting member 46 is fixed to the side surface near the upper end of the first column member 38, and a second extending member 36 is fixed to the lower surface of the ceiling beam 16.

  It is assumed that a gap is provided between the ceiling beam 16 and the first column member 38.

  A damper 34 is horizontally disposed between the first damper mounting member 46 and the second extending member 36, and one end of the damper 34 is connected to the first damper mounting member 46 via a pin 46A. The other end is connected to the second extending member 36 via a free mechanism (details will be described later) for freeing the fixing of the damper 34 described later.

  The damper 34 is a relative displacement between the first damper mounting member 46 and the second extending member 36 (the relative displacement in the axial direction of the floor girder 22 and the axial direction of the ceiling girder 16, and in the direction of arrow A in FIG. Relative displacement of). For example, the damper 34 may be applied with a damper (oil damper such as a shock absorber of an automobile) that attenuates vibration by passing oil through an orifice provided inside the damper 34, and the vibration caused by an earthquake is rotated. You may make it apply what transform | converts into a motion and attenuates a vibration by resistance of the viscous body (for example, silicone oil) around the rotary body provided in the inside of the damper 34. FIG. The damper 34 may be a known damper such as an oil damper or a viscoelastic damper (for example, a damper such as a speed-dependent damper) as long as it generates a damping force during relative displacement in the direction of arrow A in FIG. Can be used.

  The vibration damping device 30 may be retrofitted after the building 10 is built. For example, a damping device such as a damping member can be provided in the panel as a damping panel and can be retrofitted by panel replacement or the like.

  By the way, when a failure occurs in the damper 34 and it becomes impossible to expand and contract, the joint portion of the damper 34 and peripheral members (for example, large beams, foundations, etc.) may be damaged. In order to prevent damage to the building 10 due to a failure, as described above, a free mechanism for releasing the fixing of the damper 34 and the building 10 by releasing the fixing portion of the damper 34 is provided. FIG. 3 is a diagram illustrating a configuration example of a free mechanism provided in the damper 34.

  As shown in FIG. 3, the free mechanism 50 is provided with two spherical members 35 in the rod 34A of the damper 34, and the spherical member 35 is disposed in the second extending material 36 direction (outward direction of the rod 34A). A solenoid 80 for energizing is provided.

  The solenoid 80 urges the two spherical members 35 toward the second extending member 36 in a normal state where no trouble occurs in the damper 34, so that the spherical member 35 of the second extending member 36 is abutted. When the spherical member 35 is fitted into the recess 36 </ b> A provided in the contact portion, the rod 34 </ b> A of the damper 34 is fixed to the second extending member 36 and the damper 34 and the building 10 are connected.

  When a malfunction occurs in the damper 34, the two spherical members 35 are released by releasing the urging of the two spherical members 35 toward the second extending member 36 by driving the solenoid 80. Is moved toward the center of the rod 34A, and the fitting between the recess 36A of the second extending member 36 and the spherical member 35 is released, so that the damper 34 becomes free and is fixed to the building.

  Subsequently, a control system of the vibration damping device 30 of the building 10 configured as described above will be described. FIG. 4 is a block diagram illustrating a configuration of a control system of the vibration damping device 30 provided in the building 10 according to the embodiment of the present invention.

  The control system of the vibration damping device 30 includes a personal computer (PC) 52. The PC 52 includes a CPU 54, a ROM 56, a RAM 58, and an input / output port 60. These are connected to each other via various buses such as an address bus, a data bus, and a control bus. The input / output port 60 includes a display 62, a mouse 64, a keyboard 66, a hard disk (HD) as various input / output devices. 68) and a disk drive 70 for reading information from various disks 72 (for example, CD-ROM, DVD, etc.).

  The input / output port 60 is connected to the solenoid 80 described above and a load sensor 82 for detecting a load applied to the damper 34. The load sensor 82 is provided at, for example, both ends of the damper 34, detects the load applied to the damper 34 when the damper 34 is operated, and outputs the detection result to the PC 52. That is, the PC 52 determines the malfunction of the damper 34 from the detection result of the load sensor 82, and when the malfunction occurs, the solenoid 80 is driven to operate the free mechanism 50 of the damper 34 to fix the damper 34 free. Control to

  In addition, a fail safe program for driving the solenoid 80 to prevent damage to the building 10 is installed in the HDD 68 of the PC 52. There are several methods for installing the fail-safe program on the PC 52. For example, the fail-safe program is stored in a CD-ROM or DVD together with a setup program, and a disk is set in the disk drive 72. The face safe program may be installed in the HDD 68 by executing a setup program for the CPU 54, and communication with other information processing devices connected to the PC 52 via the public telephone line or the network 74 is possible. Thus, the fail safe program may be installed in the HDD 68.

  Next, the flow of processing when the above fail-safe program is executed will be described. FIG. 5 is a flowchart showing the flow of processing when the fail-safe program is executed in the vibration damping device 30 according to the embodiment of the present invention. Note that the fail-safe program will be described as being activated at the time of installation of the vibration damping device 30 and constantly monitoring the abnormality of the damper 34, for example.

  First, in step 100, the detection result of the load sensor 82 is acquired, and the process proceeds to step 102. That is, the detection result of the load applied to the damper 34 detected by the load sensor 82 is taken into the CPU 54.

  In step 102, it is determined by the CPU 54 whether or not the damper is activated. This determination determines whether or not a load is detected by the load sensor 82. If the determination is negative, the process proceeds to step 116. If the determination is affirmative, the process proceeds to step 104.

  In step 104, the CPU 54 determines whether there is an abnormal damper 34. The determination is made as to whether or not there is a damper 34 whose detection result of the load sensor 82 is equal to or greater than a predetermined threshold value. If the determination is negative, the process proceeds to step 116; 106.

  In step 106, the free mechanism 50 of the abnormal damper 34 is operated, and the routine proceeds to step 108. That is, when the CPU 54 outputs an operation instruction to the solenoid 80, the solenoid 80 is activated, the spherical member 35 of the free mechanism 50 moves to the center side of the rod 34A, and the damper 34 and the building are released from being fixed. Thus, the damper 34 is controlled to a free state.

  In step 108, the horizontal rigidity balance is calculated by the CPU 54, and the process proceeds to step 110. That is, by operating the free mechanism 50 of the damper 34, the horizontal stiffness balance of the building 10 is lost and the stiffness moves, and the torsion of the building 10 may increase, so the horizontal stiffness of the building 10 is calculated. The For the horizontal stiffness, information related to the structure for calculating the horizontal stiffness of the building 10 and the equivalent stiffness of the vibration damping device 30 (damper 34) calculated in advance are stored in the HDD 68 or the like, and the equivalent stiffness of the damper 34 that is free is stored. The horizontal stiffness balance is calculated by calculating the displacement of each way with 0 being 0 and converting the eccentricity and torsion into numerical values.

  In step 110, the CPU 54 determines whether the twist is equal to or greater than a predetermined value. That is, it is determined whether or not the horizontal stiffness balance calculated in step 108 is equal to or greater than a predetermined value. If the determination is negative, the process proceeds to step 116 as it is, and if the determination is affirmative, the process proceeds to step 112.

  In step 112, another damper 34 that operates the free mechanism 50 in order to reduce the twist is obtained by calculation by the CPU 54, and the routine proceeds to step 114. That is, the damper 34 that reduces the twist of the building 10 by operating the free mechanism 50 is obtained by calculation. When obtaining the damper 34 in which the torsion of the building 10 is reduced, each horizontal rigidity when the free mechanism 50 of each damper 34 is operated is calculated, and the free mechanism 50 in the case of approaching the original horizontal rigidity is calculated. The damper 34 that operates is determined.

  In step 114, the corresponding free mechanism 50 of the damper 34 is activated, and the routine proceeds to step 116. That is, when the CPU 54 outputs an operation instruction to the solenoid 80 corresponding to the damper 34 obtained in step 112 to activate the solenoid 80, the spherical member 35 of the free mechanism 50 moves to the center side of the rod 34A. The damper 34 is controlled to the free state.

  In step 116, the CPU 54 determines whether or not the system is turned off. This determination is made as to whether or not the termination of the face safe program has been instructed, or whether or not the PC 52 has been instructed to be turned off. If the determination is negative, the process returns to step 100. The above process is repeated, and when the determination is affirmed, the process of the fail safe program is terminated.

  As described above, in the building 10 according to the present embodiment, when an abnormality occurs in the damper 34 of the vibration damping device 30, the free mechanism 50 of the damper 34 is operated to fix the damper 34 and the building 10. Is released and the damper 34 is controlled to a free state. Thereby, damage to the building 10 due to abnormality of the damper 34 or the like can be prevented.

  In addition, when the free mechanism 50 of the damper 34 is operated, the horizontal rigidity may be lost, the rigid core may move, and the torsion of the building 10 may increase, so in this embodiment, the free mechanism 50 is operated. In consideration of the eccentricity based on the change in horizontal rigidity caused by this, the free mechanism 50 of the other damper 34 is operated in order to reduce torsion. Thereby, the deviation of the rigid center is suppressed, and damage to the building 10 can be surely prevented.

  For example, as shown in FIG. 6A, when two vibration damping devices 30 are provided in the building 10, an abnormality occurs in the damper 34 of one vibration damping device 30, and the abnormal damper 34 If the free mechanism 50 is actuated, as shown in FIG. 6B, the rigid core moves and the deformation as provided with the abnormal damper 34 becomes large, and damage may concentrate. Therefore, in the present embodiment, the free mechanism 50 of the other damper 34 is also operated, and control is performed so that the deviation of the rigid center is restored as shown in FIG. Thereby, the twist of the building 10 can be reduced and damage can be prevented from concentrating.

  Next, another configuration example of the free mechanism of the damper 34 will be described. FIG. 7 is a diagram illustrating another configuration example of the free mechanism provided in the damper 34.

  In the free mechanism 51 of the example of FIG. 7, the swing member 84 is pivotally supported by the pin 86 with respect to the second extending member 36, and the swing member 84 supports the pin 86 with respect to the second extender 36. The center of rotation is provided so as to be able to swing. Further, the rod 34 </ b> A of the damper 34 is fixed to the swing member 84 by a fixing pin 88.

  The second extending member 36 is provided with a stopper member 90 for preventing the swinging member 84 from swinging to the side opposite to the damper 34.

  The stopper member 90 is movable in the direction of arrow B in FIG. 7 by an actuator 92 such as a motor. That is, the swinging member 84 can be prevented from swinging by the stopper member 90 and the blocking can be released.

  Thus, even if the free mechanism 51 is configured, the damper 34 can be made free. That is, by driving the actuator 92 and moving the stopper member 90 to a position where the swinging member 84 is prevented from swinging, the swinging member 84 is restrained and the damper 34 functions as the vibration damping device 30. When an abnormality occurs, the actuator 92 is operated by an instruction from the CPU 54 to release the block of the swing member 84 by the stopper member 90, so that the damper 34 can be freed.

  In the above-described embodiment, the load acting on the damper 34 is detected by the load sensor 82. However, the present invention is not limited to this. For example, a strain sensor is provided on the rod 34A of the damper 34, etc. The load acting on the damper 34 may be detected by detecting the distortion of the rod 34A due to the load acting on the other, or another sensor may be used.

  In the above embodiment, it is determined whether or not the load acting on the damper 34 is equal to or greater than a predetermined value, the abnormality of the damper 34 is detected, and when the abnormality of the damper 34 is detected, the free mechanism 50 is However, the present invention is not limited to this. For example, a sensor that detects the stroke of the damper 34 is provided, and the free mechanism 50 is activated when a stroke greater than a predetermined value is detected. You may control as follows. Further, the abnormality of the vibration damping device 30 may be determined by detecting a physical quantity other than the load (for example, the temperature of the damper 34, etc.). Furthermore, the free mechanism 50 is activated when at least one of detection of an abnormality of the vibration damping device 30, detection of a load greater than a predetermined value, and detection of a stroke greater than a predetermined value is detected. May be.

DESCRIPTION OF SYMBOLS 10 Building 30 Damping device 34 Damper 50, 51 Free mechanism 52 Personal computer 80 Solenoid 82 Load sensor 84 Oscillating member 90 Stopper member 92 Actuator

Claims (5)

A damping device that is releasably fixed inside the building and damps vibrations of the building due to an earthquake in a fixed state;
A release mechanism for releasing the fixation between the vibration damping device and the building;
Detecting means for detecting a predetermined condition for releasing the front fixation by the release mechanism;
Control means for controlling the release mechanism to release the fixation between the vibration damping device and the building when the predetermined condition is detected by the detection means;
Building with. A plurality of the vibration control devices are provided at different positions inside the building,
When the predetermined condition is detected by the detecting means, the control means fixes the other damping device so that the twist of the building is reduced based on the position of the damping device to be released. The building according to claim 1, wherein the release mechanism is controlled to be released.   The control means controls the release mechanism to release the fixation of the other vibration damping device in consideration of eccentricity based on a change in horizontal rigidity of the building due to the release of the fixation of the release mechanism. Listed in the building.   The building according to any one of claims 1 to 3, wherein the vibration control device includes a hydraulic damper having a rod connected to the building, and the release mechanism releases the fixation between the rod and the building.   The said release mechanism has the rocking | swiveling member provided so that rocking | swiveling was possible between the said damping device and a building, and the said fixation is cancelled | released by rocking | fluctuating this rocking member. Any one of the buildings.

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