JP2008106473A - Wall-surface expansion joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wall-surface expansion joint which can resist strong wind pressure in normal cases, and which eliminates the risk of inhibiting the smooth relative displacement of a base-isolating layer during earthquakes. <P>SOLUTION: An expansion joint panel 25 for concealing a gap between exterior walls W1 and W2 of both skeletons is pivotally attached in such a manner as to be oscillatable via a hinge mechanism 24, in either of the main-body skeleton 1, and the skeleton 2 as a mass damper which is separated from a main body by a base-isolating device so as to be planarly and relatively displaced. The panel 25 and the hinge mechanism-side skeleton are pivotally supported and connected together by an expansion device such as a hydraulic cylinder device 26. A locking mechanism 4, which can switch between the locked state of inhibiting the expansion/contraction of the expansion device and the unlocked state of allowing the expansion/contraction of it, is provided. In the normal cases, the panel 25 is prefixed by means of the expansion device which is put into the locked state. On the occurrence of the earthquakes, an earthquake sensor S detects the earthquakes with seismic intensity equivalent to/exceeding set seismic intensity. This makes the locking mechanism switched to the unlocked state from the locked one, so that the fixing of the panel 25 by the expansion device can be released. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wall surface expansion joint provided between a main body housing in a building and a housing that is separated from the main body by a seismic isolation device and serves as a mass damper that relatively moves in a plane.

  In the conventional general outer wall expansion joint, as seen in Patent Documents 1, 2, 3, 4 and the like, an expansion joint panel (cover material) that conceals the gap between the outer walls is elastically supported on one of the outer walls by a spring. Thus, the expansion joint panel is fixed and restored during operation.

  However, when this expansion joint panel support method is used for a wall expansion joint of a high-rise building, the following problems arise. That is, for example, in a building with a super high-rise control structure whose height exceeds 150 meters, a strong wind pressure acts on the wall of the super high part, so the expansion joint panel installed in the super high part has A strong negative pressure from the wind acts.

  Therefore, in the above-described conventional method for supporting an expansion joint panel, a spring having a strong spring force capable of withstanding a strong tensile force due to a negative pressure is required. When a spring having a strong spring force is used for elastic support of the expansion joint panel, there is a problem that relative movement in the seismic isolation layer cannot be performed smoothly during an earthquake.

JP-A-6-129024 JP-A-9-111893 JP 2004-278222 A JP 2006-138142 A

  The present invention has been made in consideration of the above points, and its purpose is a wall surface that can withstand high wind pressure during normal times and does not interfere with smooth relative movement in the seismic isolation layer during earthquakes. To provide an expansion joint.

  The technical means taken by the present invention in order to achieve the above object are as follows. That is, the wall surface expansion joint according to the invention described in claim 1 is provided on one of the main body housing in the building and the main body housing that is separated by the seismic isolation device and is a mass damper that moves relative to the main body in a plane. The expansion joint panel for concealing the gap between the outer walls of the two housings is pivotally attached by a hinge mechanism, and the expansion joint panel and the housing on the hinge mechanism side are pivotally connected by an extension device. A lock mechanism that can be switched between a locked state that prevents expansion and contraction and an unlocked state that allows expansion and contraction is provided. In normal times, the expansion joint panel is fixed with a locked expansion and contraction device. The lock mechanism is unlocked from the locked state by detecting an earthquake with a seismic intensity greater than the set value. The switching, is characterized in that so as to release the expansion joint panel by the expansion device.

The invention according to claim 2 is the wall surface expansion joint according to claim 1, wherein the telescopic device is constituted by a hydraulic cylinder device, and the lock mechanism is provided in a hydraulic circuit of the hydraulic cylinder device. The expansion joint panel is fixed with a hydraulic cylinder device that is normally locked, and is configured by a valve. When an earthquake occurs, the seismic sensor detects an earthquake exceeding the set seismic intensity to lock the electromagnetic lock valve. It is characterized in that the expansion joint panel by the hydraulic cylinder device is released from the lock release state.

  A third aspect of the present invention is the wall surface expansion joint according to the second aspect, wherein the electromagnetic wave is generated by a trigger signal for releasing a mass damper trigger generated from an earthquake sensor when an earthquake having a seismic intensity equal to or higher than a set seismic intensity occurs. The lock valve is switched from the locked state to the unlocked state to release the expansion joint panel from being fixed by the hydraulic cylinder device.

  A fourth aspect of the present invention is the wall surface expansion joint according to the third aspect, wherein the hydraulic circuit of the hydraulic cylinder device includes a pressure gauge for detecting the hydraulic pressure applied to the hydraulic cylinder device and a hydraulic cylinder based on the detection result. If an electromagnetic relief valve is provided to release the hydraulic pressure of the device, and the electromagnetic lock valve does not switch to the unlocked state for some reason, the electromagnetic relief valve may be released by applying a certain load to the hydraulic cylinder device. If the electromagnetic relief valve does not release for some reason, the connection between the expansion joint panel and the hydraulic cylinder device will be destroyed first, and the expansion joint panel will be unlocked by the hydraulic cylinder device. It is characterized by doing so.

  Invention of Claim 5 is a wall surface expansion joint of Claim 1, Comprising: The said expansion-contraction apparatus is comprised by the tension spring, The said locking mechanism inserts a dead bolt and the front-end | tip part of the said dead bolt so that insertion or extraction is possible Normally, the expansion joint panel is fixed by a locked tension spring with the dead bolt's tip inserted into the locking hole. When an earthquake occurs, the seismic sensor exceeds the set seismic intensity. By detecting this earthquake, the dead bolt is switched to the unlocked state that has come out of the locking hole, and the expansion joint panel is fixed by the tension spring.

  A sixth aspect of the present invention is the wall surface expansion joint according to the fifth aspect of the present invention, wherein the tension spring is built in a double cylindrical sheath tube that is slidably fitted to each other. Wall expansion joint.

  The invention according to claim 7 is the wall surface expansion joint according to claim 5 or 6, wherein when the lock mechanism does not switch to the unlocked state for some reason, a certain load is applied to the dead bolt, The insertion locking portion between the dead bolt and the locking hole is first destroyed, and the expansion joint panel is fixed by the tension spring.

  The invention according to an eighth aspect is the wall surface expansion joint according to the third or seventh aspect, wherein the expansion joint panel and the casing on the hinge mechanism side are connected by a chain.

According to the first aspect of the present invention, the expansion joint panel pivotably attached by the hinge mechanism and the casing on the hinge mechanism side are pivotally connected by the expansion / contraction device, and the expansion / contraction device is normally operated by the lock mechanism. Since the expansion joint panel is fixed in a locked state, it is possible to withstand strong negative pressure by preventing rocking due to the wind, for example, a super high-rise vibration control with a height exceeding 150 meters It can be applied to structural buildings. Nevertheless, when an earthquake occurs, the seismic sensor detects an earthquake with a seismic intensity greater than the set seismic intensity, so that the locking mechanism is switched from the locked state to the unlocked state, and the expansion joint panel is fixed by the telescopic device. There is no risk of hindering smooth relative movement.

  According to invention of Claim 2, since the said expansion-contraction apparatus is comprised by the hydraulic cylinder apparatus, and the said lock mechanism is comprised by the electromagnetic lock valve provided in the hydraulic circuit of the said hydraulic cylinder apparatus, By fixing the expansion joint panel with the hydraulic cylinder device locked by the electromagnetic lock valve provided in the hydraulic circuit of the hydraulic cylinder device, the swinging by the wind is prevented and it can withstand strong wind pressure, Nevertheless, when an earthquake occurs, the seismic sensor detects an earthquake exceeding the set seismic intensity, so that the electromagnetic lock valve is switched from the locked state to the unlocked state, and the expansion joint panel is fixed by the hydraulic cylinder device. There is no risk of hindering smooth relative movement in the seismic layer.

  Further, after the earthquake, the expansion joint panel can be returned to the original position by extending and contracting the hydraulic cylinder device.

  According to a third aspect of the present invention, the electromagnetic lock is generated by a trigger signal (a signal for releasing the fixing of the mass damper) for releasing the trigger for the mass damper that is issued from the earthquake sensor when an earthquake having a set seismic intensity or more occurs. Since the valve is switched from the locked state to the unlocked state and the expansion joint panel is fixed by the hydraulic cylinder device, the seismic sensor that generates a trigger signal when the earthquake exceeds the set seismic intensity locks the hydraulic cylinder device of the expansion joint panel. Therefore, the electromagnetic lock valve for switching to the unlocked state is also used as a seismic sensor for switching operation, and the simplification of the configuration and the cost reduction by using the seismic sensor are possible.

  According to the invention described in claim 4, the pressure circuit for detecting the hydraulic pressure applied to the hydraulic cylinder device and the electromagnetic relief valve for releasing the hydraulic pressure of the hydraulic cylinder device based on the detection result are provided in the hydraulic circuit of the hydraulic cylinder device. When the electromagnetic lock valve does not switch to the unlocked state for some reason, the electromagnetic relief valve is configured to release by applying a certain load to the hydraulic cylinder device. If the expansion joint panel did not release, the joint between the expansion joint panel and the hydraulic cylinder device was destroyed first, and the expansion joint panel was fixed by the hydraulic cylinder device. When the earthquake of the seismic intensity exceeding the set seismic intensity occurs, Despite movement is initiated, it can be reliably prevented occurrence of adverse situation expansion joints panel is not opened.

  In this case, as described in claim 8, if the expansion joint panel and the casing on the hinge mechanism side are connected by a chain, the wall expansion joint is caused by an unpredictable cause (for example, collision of flying objects). Even if it is destroyed, the expansion joint panel and the hinge mechanism side frame are connected by a chain, so that it becomes a three-stage fail safe, and the risk of the expansion joint panel falling can be reduced as much as possible.

According to the invention described in claim 5, the expansion joint panel and the outer wall on the hinge mechanism side are pivotally connected by a tension spring, and the wind-resistant panel is restored by the tension force of the tension spring. Regardless, since the windproof panel is normally fixed by the lock mechanism, even if a strong negative pressure due to wind acts on the windproof panel, no tensile force acts on the tension spring. Therefore, there is no need for a tension spring with a strong spring force that can withstand a strong negative pressure caused by the wind, so that the problem of the relative movement in the seismic isolation layer cannot be smoothly performed due to the strong spring force can be avoided. Become.

  According to the invention described in claim 6, since the tension spring is built in the double cylindrical sheath tube that is slidably fitted to each other, the initial position of the wind resistant panel is set by setting the slide stroke end of the sheath tube. Moreover, since the tension spring is not exposed to wind and rain, rusting of the tension spring can be prevented and the performance of the external wall expansion joint can be maintained over a long period of time.

  According to the seventh aspect of the present invention, when the lock mechanism does not switch to the unlocked state for some reason, a certain load is applied to the dead bolt, whereby the insertion locking portion between the dead bolt and the locking hole. Is first destroyed and the expansion joint panel is fixed by the tension spring, so that the expansion joint panel can be prevented from falling. Furthermore, as described in claim 8, if the expansion joint panel and the casing on the hinge mechanism side are connected by a chain, the wall surface expansion joint is destroyed due to an unpredictable cause (for example, collision of flying objects). However, since the expansion joint panel and the casing on the hinge mechanism side are connected by a chain, the risk of the expansion joint panel falling can be reduced even a little.

  Hereinafter, the wall surface expansion joint according to the present invention will be described with reference to the drawings. 1 to 4 show a part of the uppermost floor used as a sky lounge (a substantially horseshoe-shaped part in a plan view shown in FIG. 2) with a housing 1 and a base isolation layer a of a main body core portion provided with stairs and elevators. A mass damper (mass damper) that moves in a plane relative to the casing 1 of the main body core portion separated from the uppermost floor portion (the horseshoe-shaped portion surrounding the three sides of the casing 1 serving as the main body core portion). A high-rise building with a seismic control structure is shown.

  Specifically, this super high-rise building has a mass damper trigger (top floor) that is generated from the seismic sensor S when the seismic sensor S installed near the ground surface (for example, the first floor) detects an earthquake with a seismic intensity greater than the set seismic intensity. The mass damper fixed state with respect to the main body core section housing 1 is released by a trigger signal T for releasing operation of the main body core section casing 2 and main body core section casing 1 fixing and unlocking mechanism). The mass damper (the top floor housing 2 used as a sky lounge) is configured to operate up to ± 1 m. 3 and 4 is a seismic isolation device 3 that supports the separated top-floor housing (sky lounge) 2, and the seismic isolation layer a is composed of a seismic isolation device, laminated rubber, or the like. 5 is a damping oil damper, and 6 is a trigger oil damper.

  Between the outer wall W1 and W2 of the main body core housing 1 and the housing 2 serving as a mass damper, the communication wall 7 is formed as a fireproof compartment, and the inner wall expansion joint EXP is used for treating the rainwater in the communication passage 7. . J1 is provided at a plurality of locations. In the illustrated example, the inner wall expansion joint EXP. There are four J1, and as shown in FIG. 2, two are provided between the left and right side surfaces of the main body core portion 1 and the inner side surface of the horseshoe-shaped portion facing it.

And each inner wall surface expansion joint EXP. On the outside (outdoor space side) of J1, a wall surface expansion joint EXP. J2 is provided, and the inner wall expansion joint EXP. It is configured to prevent wind pressure from acting on J1. Therefore, the inner wall expansion joint EXP. It is possible to prevent the adverse effects due to wind pressure on the rainwater treatment means and fire protection section forming means by J1, and the inner wall surface expansion joint EXP. The original water stop performance by J1 can be ensured, and the fire prevention section can be reliably maintained.

  In the illustrated example, the wall surface expansion joint EXP. As shown in FIG. 2, J2 is a gap between two opposing outer walls W1 and W2, corresponding to the end of the horseshoe-shaped part, and between the housing 1 of the main body core part and the central part of the horseshoe-shaped part. Are provided at two locations facing the atrium (open space for a courtyard) 8 without a roof.

  Internal wall expansion joint EXP. As shown in FIGS. 3 and 5 to 7, J <b> 1 includes a floor expansion joint 9 that forms the floor of the communication passage 7, a ceiling expansion joint 10 that forms the ceiling of the communication passage 7, and the left and right sides of the communication passage 7. And a pair of left and right inner wall expansion joints 11 forming the inner wall.

The floor expansion joint 9 includes a floor plate 12 fixed to the housing 1 side, a floor plate 13 fixed to the housing 2 side, a central floor plate 14 that moves relative to both floor plates 12 and 13, and a floor plate thereof. 14 is provided with a pair of left and right horizontal pantograph-type links 15 that are deformed around a longitudinal axis connected to the casing 1 and the casing 2 below the center 14, and the center pivot shaft 15 a of the pantograph-type link 15 is connected to the center floor plate 14. On the other hand, it is pivotally attached around the longitudinal axis.

  The ceiling expansion joint 10 is supported by one housing 1 so as to be slidable in the width direction of the communication passage 7, and can be slid by the other housing 2 in the longitudinal direction of the communication passage 7 (direction perpendicular to the width direction of the communication passage 7). The guide rail 16 is supported by a ceiling plate 17 fixed to the lower surface of the guide rail 16.

  The inner wall expansion joint 11 includes a pair of collapsible wall plates 18 having a bellows shape, and two pairs of left and right vertical pantographs that are deformed around a horizontal axis that is connected across the housing 1 and the housing 2 on the outside of each wall plate 18. The pantograph-type link 19 is pivotally connected to the bent ridge line of the bellows-like wall plate 18.

  Then, a flexible fireproof zone 20 for forming a fireproof section is disposed so as to surround the entire periphery of the floor expansion joint 9, the ceiling expansion joint 10, and the inner wall expansion joint 11, and the flexible fireproof zone 20 is placed on the floor. The horizontal pantograph-type link 15 pivotally attached to the floor 14 at the center of the expansion joint 9, and the horizontal pantograph-type link 21 connected across the frame 1 and the frame 2 above the flexible fireproof zone 20 of the ceiling, It is supported by a vertical pantograph type link 22 connected across the housing 1 and the housing 2 outside the flexible fire zone 20 on the side wall so that the fire-proof section of the communication passage 7 is maintained even when the mass damper is operated due to an earthquake. It is configured.

  In addition, a water-stop sheet 23 is arranged around the fire prevention compartment so as to surround the whole, and one end of the water-stop sheet 23 is fixed to the housing 1 side and the other end is fixed to the housing 2 side. And it is comprised so that the rainwater process (water stop process) of the communication channel | path 7 may be performed.

  The wall expansion joint EXP. J2 is the inner wall expansion joint EXP. The main purpose is to prevent the wind pressure from being applied to J1, but it also plays the role of rainwater treatment to the extent that it suppresses the blowing of rain during normal times.

In the illustrated example, the wall surface expansion joint EXP. As shown in FIG. 8, J2 is divided into a plurality of upper and lower stages (three stages in the illustrated example) to disperse weight and wind pressure, and each stage unit is shown in FIGS. As described above, the outer wall W1, W2 of the housing 1 and the housing 2 are pivotally mounted on one of the opposing outer walls W1, W2 by a hinge mechanism 24 having a vertical rotation center to conceal the gap between the outer walls W1, W2. The expansion joint panel 25 having a high wind resistance strength (for example, designed to withstand the maximum design wind pressure of 100-year reproduction cycle, in other words, the strength to withstand strong winds once every 100 years), and the expansion joint panel 25 and a hydraulic cylinder device 26 as a telescopic device that pivotally connects the housing 2 on the hinge mechanism 24 side.

  The hydraulic cylinder device (an example of an expansion / contraction device) 26 is provided with a lock mechanism 4 that can be switched between a locked state that prevents expansion and contraction of the hydraulic cylinder device 26 and an unlocked state that allows expansion and contraction. In normal times, the expansion joint panel 25 is fixed by the hydraulic cylinder device 26. When an earthquake occurs, the seismic sensor S detects an earthquake having a set seismic intensity or higher, thereby locking the hydraulic cylinder device 26 from the locked state. By switching to the release state, the expansion joint panel 25 is fixed by the hydraulic cylinder device 26. The hydraulic cylinder devices 26 in each stage unit are connected in parallel to each other and are configured to perform the same operation at the same time.

  More specifically, the center of the reinforcement frame is composed of a plurality of (eight in the illustrated example) horizontal frames 27a fixed to the back surface of the expansion joint panel 25 and a vertical frame 27b connected at right angles thereto. Casters 28 are respectively provided at the ends of two horizontal frames 27a spaced vertically from each other, and the vertical frame 27b at the center of the panel and the outer wall W2 on the hinge mechanism 24 side are pivotally connected by the hydraulic cylinder device 26. Then, an electromagnetic lock valve 29 described later is provided in the hydraulic circuit of the hydraulic cylinder device 26 to constitute the lock mechanism 4 so that the electromagnetic lock valve 29 is opened by a trigger signal T issued from the earthquake sensor S. It is configured.

  In normal times, that is, when the hydraulic cylinder device 26 of the expansion joint panel 25 is in a locked state, as shown in FIG. 9, between the tip of the caster 28 and the outer wall W1 of the housing 1 facing it. A slight gap (for example, a gap of about 40 mm) H is formed so that only the packing 30 attached to the swinging tip edge of the expansion joint panel 25 is in contact with the outer wall W1, and the caster 28 is not in contact with the outer wall W1. It has become. This is a device for allowing displacement between layers due to wind or earthquakes below a set seismic intensity.

  FIG. 11 shows a hydraulic circuit of the hydraulic cylinder device 26. In FIG. 11, 31 is an oil tank, 32 is an oil level gauge, 33 is an oil filler / air breather, 34 is a suction strainer, 35 is a hydraulic pump, 36 is a check valve, and 37 is a pressure gauge. 38 is an electromagnetic switching valve for artificially extending and contracting the hydraulic cylinder device 26, and a flow path for extending the hydraulic cylinder device 26 and a flow path for reducing the hydraulic cylinder device 26 by sliding the valve body; The flow path for circulating oil is switched.

  29 is an electromagnetic lock valve (non-leak valve) that switches between a lock state that prevents expansion and contraction of the hydraulic cylinder device 26 and a lock release state that allows expansion and contraction, and a lock state that blocks the oil passage of the hydraulic cylinder device 26; The hydraulic cylinder device 26 is configured to be switchable to an unlocked state in which the oil passage is opened. In the normal state, the expansion joint panel 25 is fixed by the hydraulic cylinder device 26 in the locked state, and a trigger for releasing the trigger for the mass damper emitted from the earthquake sensor S when an earthquake of a seismic intensity exceeding the set seismic intensity occurs. In response to the signal T, the electromagnetic lock valve 29 is switched from the locked state to the unlocked state to release the fixation of the expansion joint panel 25 by the hydraulic cylinder device 26. 29a is a pilot check valve.

  In an oil passage between the electromagnetic lock valve 29 and the hydraulic cylinder device 26, a pressure gauge 39 for detecting the hydraulic pressure applied to the hydraulic cylinder device 26 and an electromagnetic relief valve 40 for releasing the hydraulic pressure of the hydraulic cylinder device 26 based on the detection result. If the electromagnetic lock valve 29 does not switch to the unlocked state for some reason, a certain load (for example, 1.1 times the load of the 100-year reproduction cycle) is applied to the hydraulic cylinder device 26. Thus, the electromagnetic relief valve 40 is released, and the expansion joint panel 25 is fixed by the hydraulic cylinder device 26. Although not shown, the power supply circuit of the electromagnetic relief valve 40 includes a 5-minute uninterruptible power supply, and is configured so that the electromagnetic relief valve 40 can be opened even if a power failure occurs due to an earthquake. Yes.

  A connecting portion between the expansion joint panel 25 and the hydraulic cylinder device 26 (for example, a pin 41 for pivotally connecting one end of the hydraulic cylinder device 26 to a reinforcing frame of the expansion joint panel 25 or a bolt for fixing a bracket that supports the pin 41 The breaking strength of 42) is set to 1.2 times the load for opening the electromagnetic relief valve 40, but is designed to be lower than the strength of all the parts in the expansion joint panel 25.

  Therefore, when the electromagnetic relief valve 40 does not release for some reason, the connecting portion between the expansion joint panel 25 and the hydraulic cylinder device 26 is first destroyed, and the expansion joint panel 25 is fixed by the hydraulic cylinder device 26. It will be released.

  A stainless steel chain 43 connects the expansion joint panel 25 and the casing 2 on the hinge mechanism 4 side. Therefore, even if the wall expansion joint is broken due to an unpredictable cause (for example, a collision of a flying object), the expansion joint panel 25 and the casing 2 on the hinge mechanism 24 side are connected by the chain 43, so the expansion joint panel. 25 can be prevented from falling.

  According to the above configuration, the expansion joint panel 25 pivotably attached by the hinge mechanism 24 and the casing 2 on the hinge mechanism 24 side are pivotally connected by the hydraulic cylinder device 26, and the lock mechanism 4 is normally used by the lock mechanism 4. That is, since the expansion joint panel 25 is fixed by the hydraulic cylinder device 26 locked by the electromagnetic lock valve 29 provided in the hydraulic circuit of the hydraulic cylinder device 26, the expansion joint panel 25 can withstand a strong wind pressure. It can also be applied to buildings with a high-rise seismic structure that exceeds 150 meters.

Nevertheless, when an earthquake occurs, the seismic sensor S detects an earthquake greater than the set seismic intensity, thereby switching the electromagnetic lock valve 29 from the locked state to the unlocked state, and releasing the expansion joint panel 25 from the hydraulic cylinder device 26. Therefore, there is no risk of hindering smooth relative movement in the seismic isolation layer a, and as shown in FIGS. 12 to 14, the mass damper (the uppermost frame 2 used as a sky lounge) is within a range of ± 1 m at the maximum. Therefore, the body 1 can be smoothly operated to prevent the housing 1 of the main body core portion from shaking.
Since the hydraulic pressure is released in the unlocked state, the hydraulic cylinder device 26 expands as shown in FIGS. 10B and 14 when the caster 28 of the expansion joint panel 25 is pushed by the outer wall W1. However, as shown in FIG. 13, even if the housing 2 operates in a direction in which the gap between the outer walls W1 and W2 becomes wider, the hydraulic cylinder device 26 does not follow this.

As the seismic sensor S, the one dedicated to the electromagnetic lock valve 29 may be used. However, in the above embodiment, the trigger for releasing the mass damper trigger that is emitted from the seismic sensor S when an earthquake having a seismic intensity equal to or greater than the set seismic intensity occurs. The electromagnetic lock valve 29 is switched from the locked state to the unlocked state by a signal (signal for releasing the mass damper) T so that the expansion joint panel 25 is fixed by the hydraulic cylinder device 26. The seismic sensor S that generates a trigger signal when an earthquake of seismic intensity or higher occurs is also used as an earthquake sensor for switching the electromagnetic lock valve 29 for switching the hydraulic cylinder device 26 of the expansion joint panel 25 from the locked state to the unlocked state. Because of the combined use of earthquake sensors It is possible to simplify and lower the cost of construction.

  In addition, after the earthquake is over, the expansion cylinder panel 26 can be expanded and contracted by the electromagnetic switching valve 38 to return the expansion joint panel 25 to the original position.

  In particular, according to the above-described configuration, it becomes a three-stage fail safe, and the risk of dropping the expansion joint panel 25 can be reduced as much as possible. In other words, when the electromagnetic lock valve 29 is not switched to the unlocked state for some reason when an earthquake having a set seismic intensity or more occurs, the electromagnetic relief valve 40 is released by applying a certain load to the hydraulic cylinder device 26. When the expansion joint panel 25 is fixed by the hydraulic cylinder device 26 and the electromagnetic relief valve 40 does not release for some reason, the connecting portion between the expansion joint panel 25 and the hydraulic cylinder device 26 is first destroyed. Then, the expansion joint panel 25 is released from being fixed by the hydraulic cylinder device 26.

  Accordingly, it is possible to surely prevent the occurrence of an unfavorable situation such as the fixed state of the expansion joint panel 25 being not released even when the relative movement in the seismic isolation layer a is started when an earthquake having a set seismic intensity or higher occurs. Even if the wall expansion joint is destroyed due to an impossible cause (for example, a collision of a flying object), the expansion joint panel 25 and the casing 2 on the hinge mechanism 24 side are connected by the chain 43, so that the expansion joint panel 25 falls. Can be prevented.

  15 and 16 show another embodiment of the present invention, in which a tension spring 44 is employed as an expansion / contraction device that pivotally connects the expansion joint panel 25 and the casing 2 on the hinge mechanism 24 side. The lock mechanism 4 that can be switched between a locked state that prevents the expansion and an unlocked state that allows expansion and contraction is constituted by a dead bolt 45 and a locking hole 46 in which a tip end portion of the dead bolt 45 is inserted and removed. Sometimes, the expansion joint panel 25 is fixed with a tension spring 44 in a locked state in which the tip of the dead bolt 45 is inserted into the locking hole 46, and when the earthquake occurs, the earthquake sensor S senses an earthquake with a set seismic intensity or more. As a result, the dead bolt 45 is switched to the unlocked state in which the dead bolt 45 comes out of the locking hole 46, and the tension spring It is characterized in that so as to release the expansion joint panel 25 by 44.

  More specifically, the expansion joint of the reinforcement frames including a plurality of (eight in the illustrated example) horizontal frames 27a fixed to the back surface of the expansion joint panel 25 and the vertical frames 27b connected at right angles thereto. A caster 28 is provided at the tip of each of two horizontal frames 27a spaced equidistant from the center of the panel 25, and the vertical frame 27b at the center of the expansion joint panel 25 and the outer wall W2 on the hinge mechanism 24 side are connected to the expansion joint panel. 25 is pivotally connected by a tension spring 44 that controls fixing and restoration at the time of operation. Note that both ends of the tension spring 44 are supported by pins 47 and 48 described later.

An electric lock body 49 provided with a retractable dead bolt 45 and an electromagnet (not shown) for moving it in and out is fixed at a predetermined position on the outer wall W1 of the casing 1, while it is normally positioned at a position facing it. A locking block 4 having an locking hole 46 into which the tip of the dead bolt 45 is inserted is fixed to the tip of a certain horizontal frame 27a to constitute the lock mechanism 4 made of an electric lock.

  In the normal state, the tip of the dead bolt 45 in the protruding state is inserted into the locking hole 46 to maintain the locked state in which the expansion joint panel 25 is prevented from swinging. When a lock control device (not shown) receives a trigger signal from the seismic sensor S, the dead bolt 45 is pulled into the electric lock body 49 and switched to the unlocked state in which it has come out of the locking hole 46, The expansion joint panel 25 is configured to be released from the swing prevention state.

  Accordingly, in the unlocked state, when the mass damper is operated in a direction in which the gap between the outer walls W1 and W2 is narrowed, the caster 28 is pushed by the outer wall W1 and the expansion joint panel 25 is moved to the tension spring 44 as shown in FIG. As a result, it swings around the rotation center of the hinge mechanism 24 and follows the mass damper.

  Note that, in a normal state, that is, when the expansion joint panel 25 is in a locked state, a slight gap (for example, between the tip of the caster 28 and the outer wall W1 of the casing 1 facing the caster 28 as shown in FIG. A gap H of about 40 mm is formed, and only the packing 30 attached to the rocking tip edge of the expansion joint panel 25 is in contact with the outer wall W1, and the caster 28 is not in contact with the outer wall W1. A sponge-like cushioning material 46a such as chloroprene rubber having an appropriate thickness is attached to the inner surface of the locking hole 46. Each of these is a device for allowing interlayer displacement due to wind or an earthquake having a set seismic intensity or less.

  A double cylindrical sheath 51 that is slidably fitted to each other is slidably fitted to the tension spring 44, and the base end of one sheath 51a is a pin (tensile spring parallel to the rotation center of the hinge mechanism 24). 29) is pivotally attached to the expansion joint panel 25 side by a pin 47, and the base end of the other sheath tube 51b is a pin 48 (pin that supports the other end of the tension spring 44) 48 parallel to the pin 47. It is pivotally attached to the outer wall W2 on the hinge mechanism 24 side. A stopper (a stopper for setting a slide stroke end) 52 is provided on the outer surface on the proximal end side of the inner sheath tube 51a so as to prevent further sliding in the shrinking direction at the open end of the outer sheath tube 51b. Yes.

Therefore, the positional relationship between the pins 47 and 48 and the hinge mechanism 24, in other words, the initial position of the expansion joint panel 25 is defined. Further, since the tension spring 44 is built in the sheath tube 51, the tension spring 44 is not exposed to wind and rain, and rusting of the tension spring 44 can be prevented. Therefore, the wall expansion joint EXP. The performance of J2 will be maintained.

  The breaking strength of the insertion locking portion (for example, the dead bolt 45 or the locking block 50 forming the locking hole 46) between the dead bolt 45 and the locking hole 46 is determined by the wall surface expansion joint EXP. Designed to be weaker than the breaking strength of J2, and if the dead bolt 4 does not come out of the locking hole 46 for some reason when an earthquake of the set seismic intensity or higher occurs, a constant load (for example, 100-year reproduction cycle) is applied to the dead bolt 45 1), the insertion locking portion between the dead bolt and the locking hole is first broken, and the expansion joint panel 25 is fixed by the tension spring 44. Has been.

According to the above configuration, the expansion joint panel 25 side and the outer wall W2 on the hinge mechanism 24 side are pivotally connected by the tension spring 44 that controls the expansion joint panel 25 and restores it during operation. Since the end of the dead bolt 30 of the locking mechanism 4 is inserted into the locking hole 31 and the expansion joint panel 25 is fixed, even if a strong negative pressure due to wind acts on the expansion joint panel 25, the tension spring A tensile force does not act on 44, and therefore, a tension spring having a strong spring force that can withstand a strong negative pressure due to wind is not required as the tension spring 44.

  When an earthquake with a seismic intensity higher than the set seismic intensity occurs, the mass damper (the uppermost part of the frame 2 used as a sky lounge) is fixed to the frame 1 by the trigger signal T for releasing the mass damper trigger issued from the earthquake sensor S. At the same time as the state is released, the dead bolt 30 comes out of the locking hole 31 and switches to the unlocked state, thereby releasing the expansion joint panel 25 from being fixed.

  Therefore, the wall expansion joint EXP. The expansion joint panel 25 of J2 does not hinder the relative movement in the seismic isolation layer a at the time of the earthquake, and the tension spring 44 is not required to have a strong spring force. As shown in FIGS. 17 and 18, the mass damper (the top floor housing 2 used as a sky lounge) operates smoothly within a range of ± 1 m, The shaking of the main body 1 will be prevented.

  After the earthquake, the wall expansion joint EXP. Since the expansion joint panel 25 of J2 is returned to the initial position by the tension spring 44, it can be restored to the locked state shown in FIG.

  FIG. 19 shows another embodiment of the present invention, in which the outer wall W2 on the hinge mechanism 24 side is in contact with a part 27c of the reinforcement frame of the expansion joint panel 25, so that the expansion joint panel 25 is further inward. It is characterized in that a stopper 53 that prevents swinging is provided.

  According to this configuration, the double cylindrical sheath tube 51 to be fitted onto the tension spring 44 is not necessary, and thus the cost can be reduced. Since other configurations and operational effects are the same as those of the previous embodiment, the same components are denoted by the same reference numerals, and description thereof is omitted.

  As mentioned above, although the Example of this invention was described, this invention is not limited to such an Example at all, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect.

It is a schematic side view of the high-rise building which shows one Embodiment of this invention. It is a principal part crossing top view of the top floor part of a super high-rise building. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a disassembled perspective view of an inner wall surface expansion joint. It is a vertical side view of an inner wall surface expansion joint. It is a vertical front view of an inner wall surface expansion joint. It is CC elevational view of FIG. It is a cross-sectional top view of the wall surface expansion joint which concerns on this invention. It is an effect | action figure of the wall surface expansion joint which concerns on this invention. 1 is a hydraulic circuit diagram of a hydraulic cylinder device in a wall surface expansion joint according to the present invention. It is an effect | action figure which shows the positional relationship in the normal time of the wall surface expansion joint which concerns on this invention, and an internal wall surface expansion joint. It is an effect | action figure which shows the positional relationship at the time of the earthquake of the wall surface expansion joint which concerns on this invention, and an internal wall surface expansion joint. It is an effect | action figure which shows the positional relationship at the time of the earthquake of the wall surface expansion joint which concerns on this invention, and an internal wall surface expansion joint. It is a cross-sectional top view in the normal time of the wall surface expansion joint which shows other embodiment of this invention. It is a cross-sectional top view at the time of the earthquake of said wall surface expansion joint. It is an effect | action figure which shows the positional relationship at the time of the earthquake of said wall surface expansion joint and an inner wall surface expansion joint. It is an effect | action figure which shows the positional relationship at the time of the earthquake of said wall surface expansion joint and an inner wall surface expansion joint. It is a cross-sectional top view in the normal time of the wall surface expansion joint which shows other embodiment of this invention.

Explanation of symbols

EXP. J2A Wall expansion joint S Seismic sensor a Seismic isolation layer 1, 2 Frame 4 Lock mechanism 25 Expansion joint panel 26 Hydraulic cylinder device (extension device)
29 Electromagnetic lock valve 44 Tension spring (extension device)
45 Dead bolt 46 Locking hole

Claims (8)

  An expansion joint panel that conceals the gap between the outer walls of one of the housings in the building and the housing that becomes a mass damper that is separated by a seismic isolation device and moves relative to the main body in a plane. The hinge mechanism is pivotably pivoted, and the expansion joint panel and the hinge mechanism side frame are pivotally connected by an expansion / contraction device, and a locked state for preventing expansion / contraction of the expansion / contraction device and an unlocked state for allowing expansion / contraction The expansion joint panel is fixed with a telescopic device locked in the normal state, and when the earthquake occurs, the seismic sensor detects an earthquake exceeding the set seismic intensity, so that the locking mechanism is The expansion joint panel by the telescopic device by switching from the locked state to the unlocked state Wall expansion joints, characterized in that so as to unlock it.   2. The wall surface expansion joint according to claim 1, wherein the expansion / contraction device is configured by a hydraulic cylinder device, and the lock mechanism is configured by an electromagnetic lock valve provided in a hydraulic circuit of the hydraulic cylinder device. The expansion joint panel is fixed with the hydraulic cylinder device in the state, and when an earthquake occurs, the seismic sensor detects an earthquake exceeding the set seismic intensity to switch the electromagnetic lock valve from the locked state to the unlocked state. A wall expansion joint characterized by releasing the expansion joint panel from the cylinder device.   3. The wall expansion joint according to claim 2, wherein the electromagnetic lock valve is unlocked from a locked state by a trigger signal for releasing a trigger for a mass damper that is emitted from an earthquake sensor when an earthquake having a set seismic intensity or more occurs. The wall expansion joint is characterized in that the expansion joint panel is fixed by the hydraulic cylinder device.   4. The wall expansion joint according to claim 3, wherein a pressure gauge for detecting the hydraulic pressure applied to the hydraulic cylinder device and an electromagnetic relief valve for releasing the hydraulic pressure of the hydraulic cylinder device based on the detection result are provided in the hydraulic circuit of the hydraulic cylinder device. If the electromagnetic lock valve does not switch to the unlocked state for some reason, the electromagnetic relief valve is configured to release by applying a certain load to the hydraulic cylinder device. When the relief valve does not release, the connecting part between the expansion joint panel and the hydraulic cylinder device is first destroyed, and the expansion joint panel is fixed by the hydraulic cylinder device. Expansion joint.   It is a wall surface expansion joint according to claim 1, wherein the expansion and contraction device is constituted by a tension spring, and the locking mechanism is constituted by a dead bolt and a locking hole into which a tip end portion of the dead bolt is removably inserted, Normally, the expansion joint panel is fixed with a locked tension spring in which the tip of the dead bolt is inserted into the locking hole, and when an earthquake occurs, the seismic sensor detects an earthquake exceeding the set seismic intensity. A wall expansion joint, wherein the dead bolt has been switched to the unlocked state in which it has come out of the locking hole, and the expansion joint panel is fixed by the tension spring.   6. The wall surface expansion joint according to claim 5, wherein the tension spring is built in a double cylindrical sheath tube that is slidably fitted to each other.   The wall surface expansion joint according to claim 5 or 6, wherein when the lock mechanism does not switch to the unlocked state for some reason, a certain load is applied to the dead bolt, whereby the dead bolt and the locking hole are The wall expansion joint is characterized in that the insertion locking portion is first destroyed and the expansion joint panel is fixed by the tension spring.   The wall surface expansion joint according to claim 3 or 7, wherein the expansion joint panel and the casing on the hinge mechanism side are connected by a chain.

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