JP4939898B2 - Wall expansion joint for high-rise buildings - Google Patents

Description

  The present invention relates to a wall surface in a high-rise building having a structure in which a part of the upper floor is separated from the main body by a seismic isolation device, and the separated upper floor portion is a mass damper (mass damper) that moves relative to the main body in a plane. Regarding expansion joints.

  For example, a seismic control system that operates in a direction that reduces the vibration of the building body during an earthquake by separating the rooftop structure such as concrete plates, water tanks, and design structures provided on the roof from the building body with a seismic isolation layer. Buildings with damping structures used as mass dampers are known from Patent Documents 1, 2, 3, 4 and the like.

  In these buildings, the interior of the rooftop structure used as a mass damper is not used as a room for people to enter and exit. Seismic structure building used as a mass damper for seismic control system in which a part of the floor is separated from the main body core part by a seismic isolation layer, and is operated relatively in the direction in which the vibration of the main body core part is attenuated in the event of an earthquake In this case, it is necessary to form a communication passage that is fire-proofed and treated with rainwater so that rainwater does not enter between the separated outermost walls of the top floor (sky lounge, sky lobby, etc.) and the core of the main body. . And even if an uppermost floor part and a main-body core part move relatively planarly at the time of an earthquake, it is necessary to maintain the function as a communication path.

  Therefore, a wall surface expansion joint is provided between the separated outer walls of the upper floor portion and the main body core portion so as to form a communication passage that is fire-proofed and performs rainwater treatment on the communication passage.

  However, for example, in a super high-rise building with a height exceeding 150 meters, a strong wind pressure acts on the wall of the upper floor, so that it can withstand the high wind pressure while following the operation at the time of an earthquake in the high floor, It seems that it is difficult to solve the problem of forming a fire prevention compartment while completely preventing the water stop with a single wall expansion joint.

  Moreover, in the conventional general outer wall expansion joint, as seen in Patent Documents 5, 6, 7, 8, etc., a panel (cover material) that conceals the gap between the outer walls is elastically supported on one of the outer walls by a spring. Accordingly, the panel is fixed and restored during operation.

However, if this panel support method is used for a wall expansion joint of a high-rise building, a strong negative pressure due to wind acts, and a spring that can withstand a strong tensile force due to the negative pressure is required. If a spring having a strong spring force is used for elastic support of the panel, there is a problem in that the relative movement in the seismic isolation layer cannot be performed smoothly during an earthquake.

Japanese Patent Laid-Open No. 11-93458 JP 11-159192 A JP 2000-170411 A JP 2004-346562 A 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 the main purpose of the present invention is to separate a part of the upper floor from the main body with a seismic isolation device so that the vibration of the main body is reduced during an earthquake. In a high-rise building with a structure that is used as a mass damper for a seismic control system that operates in a specific direction, a connection passage formed between the separated upper floor part and the opposing outer walls of the main body, despite the strong wind pressure acting Another object of the present invention is to provide a wall expansion joint for a high-rise building in which rainwater treatment and fire prevention sections are reliably performed.

  The technical means taken by the present invention in order to achieve the above object are as follows. That is, the invention according to claim 1 is a high-rise building having a structure in which a part of the upper floor is separated from the main body by a seismic isolation device, and the separated upper floor portion is a mass damper that moves relative to the main body in a plane. An internal wall expansion joint is formed between the separated upper floor portion and the outer wall of the main body facing each other, and an internal wall expansion joint for treating rainwater in the communication passage is provided, and an external wall expansion joint for wind pressure treatment is provided outside the connection wall. Is provided to prevent the wind pressure from acting on the internal wall surface expansion joint.

  Invention of Claim 2 is a wall surface expansion joint of the high-rise building of Claim 1, Comprising: The said external wall surface expansion joint is an up-down direction to one of the outer wall which the separated upper floor part and the main body mutually oppose A wind-resistant panel that is pivotably mounted by a hinge mechanism having a pivot center of the cover to conceal the gap between the outer walls, a locked state that prevents the wind-resistant panel from swinging, and an unlocked state that allows swinging The windproof panel is fixed with the lock mechanism in normal times, and the earthquake sensor detects an earthquake with a seismic intensity greater than the set seismic intensity when an earthquake occurs, so that the lock mechanism is changed from the locked state to the unlocked state. It is characterized in that it is configured to switch and release the fixing of the wind-resistant panel by the lock mechanism.

  Invention of Claim 3 is a wall surface expansion joint of the high-rise building of Claim 2, Comprising: A wind-resistant panel and the outer wall by the side of a hinge mechanism are pivotally connected by the tension spring, The said lock mechanism is a dead bolt And a locking hole that allows the tip of the dead bolt to be removably inserted. Normally, the expansion joint panel is fixed by a locked tension spring in which the tip of the dead bolt is inserted into the locking hole. When an earthquake occurs, the seismic sensor detects an earthquake with a seismic intensity greater than the set seismic intensity to switch to the unlocked state in which the dead bolt has come out of the locking hole, so that the expansion joint panel is fixed by the tension spring. It is characterized by that.

  Invention of Claim 4 is a wall surface expansion joint of the high-rise building of Claim 3, Comprising: The said tension | pulling spring is incorporated in the double cylinder-shaped sheath tube which mutually fits slidably. It is characterized by.

  According to the first aspect of the present invention, an internal wall expansion joint is formed between the separated upper floor portion and the opposing outer wall of the main body so as to form a communication passage partitioned by fire prevention and to treat rainwater in the communication passage. Since the external wall surface expansion joint for wind pressure treatment is provided on the outside, it is possible to prevent the strong wall pressure from acting on the internal wall surface expansion joint even in a high-rise portion where a strong wind pressure acts.

Therefore, it is possible to prevent the adverse effects due to wind pressure on the rainwater treatment means and fire protection section forming means by the inner wall surface expansion joint, the original water stop performance by the inner wall surface expansion joint can be secured, and the fire protection section can also be reliably maintained. .

  In the case of a high-rise part, a strong wind pressure acts on the external wall expansion joint for wind pressure treatment provided outside the internal wall expansion joint. According to the invention of claim 2, the external wall surface Since the windproof panel of the expansion joint is normally fixed by a lock mechanism, it can withstand strong negative pressure due to the prevention of rocking by the wind, and in the event of an earthquake, the seismic sensor exceeds the set seismic intensity. By detecting the earthquake, the lock mechanism is switched from the locked state to the unlocked state, and the wind-resistant panel of the external wall expansion joint is released from the seismic isolation layer at the time of the earthquake. Does not interfere with relative movement.

  According to the third aspect of the present invention, although the wind-resistant panel and the outer wall on the hinge mechanism side are pivotally connected by the tension spring, the wind-resistant panel is restored by the tensile force of the tension spring. In addition, since the wind-resistant panel is fixed by a lock mechanism in normal times, even if a strong negative pressure due to wind acts on the wind-resistant 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 4, 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.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show that a part of the top floor used as a sky lounge (a substantially horseshoe-shaped part in a plan view shown in FIG. 2) is separated by a main body (core part) 1 having a staircase and an elevator and a seismic isolation layer a. FIG. 2 shows a high-rise building having a seismic control structure in which a separated top floor portion (horse-shoe-shaped portion surrounding three sides of the main body 1) 2 is a mass damper (mass damper) that moves relative to the main body 1 in a plane.

  Specifically, this skyscraper is a mass damper trigger (as a sky lounge) 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 of a seismic intensity or higher. The mass damper fixed state with respect to the main body 1 is released by a trigger signal T for releasing operation of the uppermost floor portion 2 and the main body 1 used for fixing and unlocking, and the mass damper (used as a sky lounge). The uppermost floor portion 2) is configured to operate up to ± 1 m. 3 and 4 are seismic isolation devices that support the separated top floor portion (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 opposing outer walls W1 and W2 of the uppermost floor portion 2 separated from the main body 1, a communication passage 7 having a fire prevention compartment is formed and an inner wall expansion joint EXP. J1 is provided at a plurality of locations. In the illustrated example, the inner wall expansion joint EXP. There are four J1s, and as shown in FIG. 2, two are provided between the left and right side surfaces of the main body 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, an external wall expansion joint EXP. J2 is provided, and the inner wall expansion joint EXP. It is configured to prevent wind pressure from acting on J1.

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

  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 main body 1 side, a floor plate 13 fixed to the top floor portion (sky lounge) 2 side, and a center plate that moves relative to both floor plates 12 and 13 in a plane. A floor plate 14 and a pair of left and right horizontal pantograph links 15 that are deformed around a longitudinal axis connected to the main body 1 and the uppermost floor portion 2 below the floor plate 14, and a central pivot in the pantograph link 15. The support shaft 15a is pivotally attached to the center floor plate 14 so as to be rotatable about the longitudinal axis.

  The ceiling expansion joint 10 is supported by the main body 1 so as to be slidable in the width direction of the connecting passage 7 and supported by the uppermost floor portion 2 so as to be slidable in the longitudinal direction of the connecting passage 7 (direction perpendicular to the width direction of the connecting passage 7). The guide rail 16 and the ceiling plate 17 fixed to the lower surface of the guide rail 16 are configured.

  The inner wall expansion joint 11 includes a pair of foldable wall plates 18 having a bellows shape, and two right and left vertical pairs that are deformed around a horizontal axis connected to the main body 1 and the uppermost floor portion 2 outside each wall plate 18. The pantograph type link 19 is provided, and each pivot shaft of 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 center floor 14 of the expansion joint 9 and the horizontal pantograph-type link connected over the main body 1 and the top floor portion 2 above the flexible fireproof zone 20 of the ceiling. 21. It is supported by a vertical pantograph-type link 22 connected to the main body 1 and the top floor portion 2 outside the flexible fire zone 20 on the side wall, so that a fire prevention section of the communication passage 7 is provided even when the mass damper is operated due to an earthquake. Configured to be maintained.

  In addition, a water-stop sheet 23 is disposed around the fire prevention compartment so as to surround the whole, and one end of the water-stop sheet 23 is on the main body 1 side and the other end is on the top floor portion 2 side, respectively, in a watertight state. The rainwater treatment (water stoppage treatment) of the communication passage 7 is performed.

  External 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 external wall 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 opposite to the main body 1 and the separated uppermost floor portion 2 is pivotally attached to one of the outer walls W1, W2 by a hinge mechanism 24 having a vertical center of rotation. And a lock mechanism 26 for switching between a locked state that prevents the wind-resistant panel 25 from swinging and an unlocked state that allows the swing, and the wind-resistant panel 25 is normally used by the lock mechanism 26. When an earthquake occurs, the seismic sensor S detects an earthquake with a seismic intensity greater than the set seismic intensity, thereby switching the lock mechanism 26 from the locked state to the unlocked state. It is configured to unlock the panel 25.

More specifically, the center of the wind-resistant panel among the reinforcing frames composed of a plurality of (eight in the illustrated example) horizontal frames 27a fixed to the rear surface of the wind-resistant panel 25 and the vertical frames 27b connected at right angles thereto. A caster 28 is provided at the tip of two horizontal frames 27a that are equally spaced from each other up and down, and the vertical frame 27b at the center of the wind-resistant panel and the outer wall W2 on the hinge mechanism 24 side are fixed and the wind-resistant panel 25 is fixed. It is pivotally connected by a tension spring 29 that controls the restoration of the above. Note that both ends of the tension spring 29 are supported by pins 37 and 38 described later.

  In addition, a lock mechanism 26 is configured between the front end of the horizontal frame 27a where the casters 28 are not provided and the outer wall W1 of the main body 1 that is normally opposed to the horizontal frame 27a. Although various configurations can be adopted as the lock mechanism 26, in the illustrated example, the lock mechanism 26 is configured by a dead bolt 30 and a locking hole 32 into which a tip portion of the dead bolt 30 is removably inserted. Specifically, an electric lock main body 31 having a retractable dead bolt 30 and an electromagnet (not shown) for driving in and out is fixed at a predetermined position on the outer wall W1 of the main body 1, while the normal lock is fixed. A locking block 33 including an electric lock is formed by fixing a locking block 33 having a locking hole 32 into which the tip of the dead bolt 30 is inserted at the tip of the horizontal frame 27a located at a position opposite to the horizontal frame 27a. It is.

  In the normal state, the tip of the dead bolt 30 in the protruding state is inserted into the locking hole 32 to maintain the locked state that prevents the wind-resistant panel 25 from swinging. When the control device (not shown) receives the trigger signal from the seismic sensor S, the dead bolt 30 is pulled into the electric lock body 31 and switched to the unlocked state where the dead bolt 30 comes out of the locking hole 32, and wind resistance is increased. The panel 25 is configured to be released from the rocking prevention state.

  Accordingly, in the unlocked state, when the mass damper operates in a direction in which the gap between the outer walls W1 and W2 becomes narrower, the caster 28 is pushed by the outer wall W1 and the wind-resistant panel 25 resists the tension spring 29 as shown in FIG. Then, it swings around the rotation center of the hinge mechanism 24 and follows the mass damper.

  In addition, as shown in FIG. 9, there is a slight gap (for example, 40 mm) between the tip of the caster 28 and the outer wall W1 of the main body 1 facing the caster 28 at the normal time, that is, when the windproof panel 25 is in the locked state. A gap H) is formed so that only the packing 34 attached to the rocking tip edge of the wind-resistant 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 35 such as chloroprene rubber having an appropriate thickness is attached to the inner surface of the locking hole 32. 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 tube 36 slidably fitted to each other is slidably fitted to the tension spring 29, and the base end of one sheath tube 36 a is a pin (tension spring) parallel to the rotation center of the hinge mechanism 24. 29) is pivotally attached to the wind-resistant panel 25 side by a pin 37, and the base end of the other sheath tube 36b is hinged by a pin 38 (pin supporting the other end of the tension spring 29) 38 parallel to the pin 37. It is pivotally attached to the outer wall W2 on the mechanism 24 side. A stopper (stopper for setting a slide stroke end) 39 is provided on the outer surface on the proximal end side of the inner sheath tube 36a so as to prevent further sliding in the shrinking direction at the open end of the outer sheath tube 36b. Yes.

Therefore, the positional relationship between the pins 37 and 38 and the hinge mechanism 24, in other words, the wind-resistant panel 25.
The initial position is defined. Further, since the tension spring 29 is built in the sheath tube 36, the tension spring 29 is not exposed to wind and rain, and rusting of the tension spring 29 can be prevented. Therefore, the external wall expansion joint EXP. The performance of J2 will be maintained.

  According to said structure, the internal wall surface expansion which forms the communication channel | path 7 by which fire prevention division was carried out between the outer walls W1 and W2 which the uppermost floor part 2 isolate | separated from the main body 1 performs the rainwater treatment of the said communication channel | path 7 Joint EXP. J1 is provided, and an external wall expansion joint EXP. Since J2 is provided, the inner wall expansion joint EXP. It is possible to prevent a strong 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.

  Internal wall expansion joint EXP. J1 external wall expansion joint EXP. A strong wind pressure acts on J2, but the external wall expansion joint EXP. Since the wind-resistant panel 25 of J2 is normally fixed by the lock mechanism 26, the swinging by the wind is prevented and the wind-resistant panel 25 can withstand the strong negative pressure caused by the wind.

  Further, the wind-resistant panel 25 side and the outer wall W2 on the hinge mechanism 24 side are pivotally connected by a tension spring 29 that controls fixing of the wind-resistant panel 25 and restoration at the time of operation. 25 is fixed, even if a strong negative pressure due to wind acts on the wind-resistant panel 25, no tensile force acts on the tension spring 29. Therefore, the tension spring 29 can withstand a strong negative pressure caused by wind. There is no need for a strong spring spring.

  When an earthquake exceeding the set seismic intensity occurs, the mass damper (the top floor portion 2 used as a sky lounge) relative to the main body 1 is fixed by the trigger signal T for releasing the mass damper trigger issued from the earthquake sensor S. At the same time, the lock mechanism 26 is switched from the locked state to the unlocked state, and the fixing of the wind-resistant panel 25 by the lock mechanism 26 is released.

  Therefore, the external wall expansion joint EXP. Since the wind-resistant panel 25 of J2 does not hinder relative movement in the base isolation layer a at the time of an earthquake, and a strong spring force is not required as the tension spring 29, the tension spring 29 in the base isolation layer a is not required. As shown in FIG. 11 and FIG. 12, the mass damper (the top floor portion 2 used as a sky lounge) operates smoothly in a range of ± 1 m at maximum without interfering with smooth relative movement. This will prevent shaking.

  After the earthquake, the external wall expansion joint EXP. Since the wind-resistant panel 25 of J2 is returned to the initial position by the tension spring 29, it can be restored to the locked state shown in FIG.

FIG. 13 shows another embodiment of the present invention, in which the wind resistant panel 25 is further swung inward by contacting the outer wall W2 on the hinge mechanism 24 side with a part 27c of the reinforcing frame of the wind resistant panel 25. This is characterized in that a stopper 40 is provided to prevent this.

  According to this configuration, the double cylindrical sheath tube 36 to be fitted onto the tension spring 29 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 in the normal time of an external wall surface expansion joint. It is a cross-sectional top view at the time of the earthquake of an external wall surface expansion joint. It is explanatory drawing of an effect | action. It is explanatory drawing of an effect | action. It is a cross-sectional top view in the normal time of the external wall surface expansion joint which shows other embodiment of this invention.

Explanation of symbols

EXP. J1 Internal wall expansion joint EXP. J2 External wall expansion joint a Seismic isolation layer 1 Main body (core part)
2 Top floor (Sky Lounge)
7 passage

Claims (4)

  In a high-rise building with a structure in which a part of the upper floor is separated from the main body by a seismic isolation device and the separated upper floor part is a mass damper that moves relative to the main body in a plane, the separated upper floor part and the main body An internal wall expansion joint is formed between the opposing outer walls to form a communication passage and treat rainwater in the communication passage, and an external wall expansion joint for wind pressure treatment is provided on the outside of the connection wall, so that wind pressure is applied to the internal wall expansion joint. A wall expansion joint for high-rise buildings, which is designed to prevent it from acting.   2. The wall surface expansion joint for a high-rise building according to claim 1, wherein the external wall surface expansion joint is formed by a hinge mechanism having a vertical center of rotation on one of the separated upper floor portion and the opposing outer wall of the main body. A wind-resistant panel that is pivotably pivoted to conceal the gap between the outer walls, and a lock mechanism that switches between a locked state that prevents the wind-resistant panel from swinging and an unlocked state that allows swinging. The windproof panel is fixed with the lock mechanism, and when an earthquake occurs, the seismic sensor detects an earthquake exceeding the set seismic intensity to switch the lock mechanism from the locked state to the unlocked state. A wall expansion joint for high-rise buildings, characterized in that it is configured to release the fixation.   A wall expansion joint for a high-rise building according to claim 2, wherein the wind-resistant panel and the outer wall on the hinge mechanism side are pivotally connected by a tension spring, and the lock mechanism inserts and removes the dead bolt and the tip of the dead bolt. The expansion joint panel is fixed by a locked tension spring with the tip of the dead bolt inserted into the locking hole. A high-rise building characterized by detecting an earthquake with a set seismic intensity or higher and switching to a unlocked state in which the dead bolt has come out of the locking hole, and releasing the expansion joint panel from the tension spring. Wall expansion joint.   The wall expansion joint for a high-rise building according to claim 3, wherein the tension spring is built in a double cylindrical sheath tube that is slidably fitted to each other. Expansion joint.

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