JP2015190597A - Seismic isolation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seismic isolation device that need not replace an earthquake shear pin with a typhoon shear pin in typhoon attack.SOLUTION: A seismic isolation device includes, between a substructure 3 and a superstructure 4, a seismic isolation means 21; a slide regulation means 22 for regulating the slide direction of the seismic isolation means; a shear pin 23 for releasing constraint of the seismic isolation means in earthquake occurrence; and a flotation prevention means 30 for preventing flotation of the superstructure 4. In the seismic isolation device, a fixation means 40 for fixing the flotation prevention means in typhoon attack is fixed to the front and rear of the flotation prevention means 30.

Description

  The present invention relates to a seismic isolation device that is fixed so that a seismic isolation function of a seismic isolation device is not activated by a typhoon wind load when a typhoon strikes.

  A seismic isolation system that is interposed between the lower structure (for example, traveling device) and the upper structure (for example, the crane body) of a container crane that is used when handling containers on a container ship, and protects the upper structure from earthquakes. Examples of the apparatus include laminated rubber obtained by alternately laminating rubber plates and steel plates, a sliding bearing using sliding, or a rolling bearing using roller rolling.

  Both seismic isolation devices have low rigidity with respect to the horizontal direction that is the vibration direction of the earthquake, and the horizontal natural vibration period of the superstructure is longer than the horizontal vibration period of the earthquake. The vibration of the upper structure is suppressed.

  However, since the seismic isolation device with low horizontal rigidity responds even with a small horizontal force, the upper structure supported by the seismic isolation is shaken in the horizontal direction even if a little wind pressure is applied. Therefore, a load several times (for example, about 1.5 to 2.0 times) the time of the earthquake is applied to the shear pin provided in the seismic isolation device due to the rolling due to the wind pressure, and breaks.

  Previously, earthquake typhoon shear pins were replaced with typhoon shear pins before the typhoon hit based on weather information, but seismic shear pins should not interfere with container handling operations. Since it is tightly attached, it may take about 2 hours or more to replace one. Normally, since one container crane is provided with four shear pins (for four legs), it takes a total of eight hours or more (about one day).

  On the other hand, in Patent Document 1, a seismic isolation device (laminated rubber) is interposed between the foundation and the detached house, while a fixing device that temporarily fixes the shaking of the detached house as a measure against strong winds. It is described that it is installed. This fixing device is designed so that when a typhoon hits, a cylindrical piston installed on the foundation side is hooked on a hook installed on the detached house side and slid to the detached house side, but the structure is complicated, There are problems such as a large number of parts.

  In addition, the sliding bearing type seismic isolation device described in Patent Document 2 supports the first flange supporting the first sliding bearing member and the second sliding bearing member during transportation / transport or when a typhoon strikes. The second flange is fixed by eyebolts. In the case of this seismic isolation device, the distance between the first and second sliding bearing members is narrow, so a short eyebolt is sufficient. However, if laminated rubber is used instead of the sliding bearing member, the length of the eyebolt is long. Therefore, when using eyebolts having the same thickness as conventional ones, it is necessary to increase the number of eyebolts used.

JP 2000-154669 A JP 2003-41801 A

  The present invention has been made to solve these problems, and it is an object of the present invention to provide a seismic isolation device that does not require replacement of an earthquake shear pin with a typhoon shear pin when a typhoon strikes. It is another object of the present invention to provide a seismic isolation device having a simpler structure and a smaller number of parts than conventional fixing devices.

  The invention according to claim 1 of the present invention provides a seismic isolation means, a slide regulating means for regulating the sliding direction of the seismic isolation means between the lower structure and the upper structure, and the seismic isolation means when the earthquake occurs. In the seismic isolation device having a shear pin for releasing restraint and an anti-lifting means for preventing the upper structure from rising, fixing for fixing the anti-lifting means when a typhoon strikes in front of and behind the anti-lifting means Means is provided.

  According to a second aspect of the present invention, there is provided a seismic isolation means between the lower structure and the upper structure, a slide regulation means for regulating the sliding direction of the seismic isolation means, and the seismic isolation means when an earthquake occurs. In the seismic isolation device having a shear pin for releasing restraint and an anti-lifting means for preventing the upper structure from rising, fixing means installed at the front and rear of the anti-lifting means are installed on the lower structure. And a fixing material mounted in a gap between the fixing material mounting portion and the lifting prevention means when a typhoon comes.

  According to a third aspect of the present invention, there is provided a seismic isolation means between the lower structure and the upper structure, a slide regulation means for regulating the sliding direction of the seismic isolation means, and the seismic isolation means when the earthquake occurs. In the seismic isolation device having a shear pin for releasing restraint and an anti-lifting means for preventing the upper structure from rising, fixing means installed at the front and rear of the anti-lifting means are installed on the lower structure. And a fixing material mounted in a gap between the fixing material mounting portion and the lifting prevention means when a typhoon strikes, and the fixing material mounting portion mounts the fixing material. It has a letter-shaped groove and a clamping bolt that presses the fixing member against the lifting prevention means.

  According to a third aspect of the present invention, there is provided a seismic isolation means between the lower structure and the upper structure, a slide regulation means for regulating the sliding direction of the seismic isolation means, and the seismic isolation means when the earthquake occurs. In the seismic isolation device having a shear pin for releasing restraint and an anti-lifting means for preventing the upper structure from rising, fixing means installed at the front and rear of the anti-lifting means are installed on the lower structure. And a fixing material mounted in a gap between the fixing material mounting portion and the lifting prevention means when a typhoon strikes, and the fixing material mounting portion mounts the fixing material. It has a letter-shaped groove and a clamping bolt that presses the fixing member against the lifting prevention means, and further has a length that allows the fixing member to span between a pair of left and right fixing member mounting portions. Is.

  The present invention provides a seismic isolation means between the lower structure and the upper structure, a slide regulation means for regulating the sliding direction of the seismic isolation means, a shear pin for releasing the restraint of the seismic isolation means when an earthquake occurs, In the seismic isolation device having the anti-lifting means for preventing the upper structure from rising, a fixing means for fixing the anti-lifting means when a typhoon strikes is installed in front and behind the anti-lifting means. Before the storm attacks, the lift prevention means can be fixed by being sandwiched from the front and rear two directions.

  For this reason, it is possible to prevent the shear pin from breaking in the seismic isolation device when a typhoon strikes. In addition, the work of exchanging the earthquake shear pin and the typhoon shear pin before the typhoon hit becomes unnecessary, and the work before the typhoon hit becomes simple.

  Further, the leg structure of the container crane is fixed to the traveling device by the fixing means, and the hole of the bracket provided in the traveling device and the hole of the lever provided in the seismic isolation device can be accurately aligned. Therefore, the work of inserting a new shear pin into the hole after the earthquake becomes easy and can be quickly recovered.

It is a top view including the partial cross section of the seismic isolation apparatus which concerns on this invention. It is an AA arrow line view of FIG. It is BB sectional drawing of FIG. It is a perspective view of a fixing plate (fixing material). It is an enlarged view of the arrow D part of FIG. It is an enlarged view of the arrow E part of FIG. It is a front view of the container crane which concerns on this invention. It is a fixed plate (fixing material) mounting view at the time of a typhoon. It is a HH arrow line view of FIG. It is II sectional drawing of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 7, the container crane 1 used when unloading a container of a container ship (not shown) travels on a traveling rail (not shown) laid on the quay G (passes through the paper surface). direction). The container crane 1 includes a crane main body 2 and four traveling devices 3 provided at four corners of the crane main body 2. The crane body 2 is provided with a girder 5 horizontally at the upper end of a leg structure 4 composed of two sea legs and two land legs, and a boom 6 is attached to the sea side end so as to be able to be raised and lowered. The girder 5 and the boom 6 are reinforced by a top iron structure 7, a back stay 8 and a fore stay 12.

  The trolley 9 mounted on the girder 5 traverses along a traverse rail (not shown) laid on the girder 5 and the boom 6, and handles the container C by a spreader (hanging tool) 10 provided on the trolley 9. Do.

  As shown in FIG. 7, the container crane 1 is seismically isolated between a leg structure (upper structure) 4 and traveling devices (lower structures) 3 arranged at four corners of the leg structure 4. A device 20 is provided.

  As shown in FIG. 1, the seismic isolation device 20 regulates a laminated rubber (seismic isolation means) 21 in which rubber plates and steel plates are alternately laminated, and two sliding directions arranged before and after the seismic isolation means 21. Slide regulating means 22, 22, a shear pin 23 that restrains the seismic isolation means 21, and a pair of lifting prevention means 30, 30 arranged on the left and right of the seismic isolation means 21.

  The shear pin 23 is a pin having a predetermined shearing force set in advance, a hole of a lever 29 provided in the connection link 24 of the slide restricting means 22, and a bracket 19 provided in the traveling device (lower structure) 3. Is inserted into the hole.

  As described above, the anti-lifting means 30 disposed on the left and right sides of the seismic isolation means 21 are T-shaped with a T-shaped cross section provided at the lower end portion 14 of the leg structure 4 as shown in FIG. The rail 31 and two sets of front and rear guide means 34 provided on the upper end 13 of the traveling device 3 (lower structure) are configured to prevent the leg structure 4 from being lifted.

  As shown in FIG. 1, the T-shaped rail 31 in the lifting prevention means 30 is arranged so as to be parallel to the sliding direction S of the seismic isolation device 20, and the guide means 34 is engaged with the T-shaped rail 31, respectively. It is supposed to be.

  As shown in FIG. 3, the guide means 34 includes a pair of left and right roller supports 35 and a guide roller 36 that is rotatably supported by each roller support 35. The guide rollers 36 are respectively positioned above the rail portions 32 and 32 projecting to the left and right of the T-shaped rail 31 and guide the sliding movement of the T-shaped rail 41.

  In the present invention, as shown in FIG. 1, fixing means 40 are provided in front of and behind the lifting prevention means 30, respectively, so that the lifting prevention means 30 is fixed when a typhoon strikes.

  The fixing means 40 includes a pair of left and right fixing material mounting portions 41, and a single elongated fixing plate (fixing material) inserted into the gap J between the two fixing material mounting portions 41 and 41 and the lifting prevention means 30. ) 42 (see FIG. 4).

  As shown in FIGS. 5 and 6, the fixing material mounting portion 41 includes an L-shaped groove 43 and a fastening bolt 44. The tightening bolt 44 is screwed to the fixing material mounting portion 41 so as to be parallel to the sliding direction S of the lifting prevention means 30.

  The fixing material mounting portion 41 is installed on the upper end portion 13 of the traveling device 3 as shown in FIG. At that time, the left and right fixing member mounting portions 41 and 41 are located outside the slide region (hatched portion) Q and close to both sides of the slide region Q so as not to prevent the T-shaped rail 31 from sliding. It is installed as follows.

  As shown in FIG. 4, the fixing plate 42 has a thick plate shape or a strip shape, and the length L is a length that can be spanned between the two left and right fixing material mounting portions 41, 41. The width W has a width substantially equal to the gap J between the T-shaped rail 31 and the L-shaped groove 43 of the fixing member mounting portion 41, and the thickness T is the plate of the rail portion 32 of the T-shaped rail 31. It has a plate thickness almost comparable to the thickness.

  The fixing plate 42 has a weight of about 10 kg and has a handle (not shown). Usually (except when a typhoon strikes), it is stored in a predetermined location on the leg structure (upper structure) 4.

  In addition, the code | symbol 50 has shown the means to attenuate the vibration at the time of the earthquake of the crane main body 2 (leg structure 4) in FIG.

  Now, when it is known that a typhoon will strike, as shown in FIG. 8, the fixing plate 42 is mounted in the gap J between the pair of left and right fixing material mounting portions 41 and the T-shaped rail 31 of the lifting prevention means 30. .

  Next, the fastening bolt 44 screwed to the fixing material mounting portion 41 is tightened to press the side of the fixing plate 42 against the end face of the T-shaped rail 31 of the lifting prevention means 30 (see FIGS. 8 and 9). Therefore, the T-shaped rail 31 of the lifting prevention means 30 is sandwiched and fixed by the two front and rear fixing plates 42 and 42.

  In other words, since the crane body 2 is fixed by the two front and rear fixing plates 42 and 42, it is possible to prevent the shear pin 23 from being broken in the seismic isolation device 20.

  After the typhoon has passed, if the fixing plates 42 are removed from the front and rear fixing means 40, the lifting prevention means 30 is released from the fixed state, and can respond to the occurrence of an earthquake. The two fixed plates 42 and 42 thus removed are stored in a predetermined place on the leg structure (upper structure) 4.

  In the above description, the case where the fixing means 40 is applied to the container crane 1 has been described. However, the present invention is not limited thereto, and can be applied to typhoon countermeasures such as detached houses.

3 Lower structure 4 Upper structure 21 Seismic isolation means 22 Slide restriction means 23 Shear pin 30 Lift prevention means 40 Fixing means

Claims (4)

  Seismic isolation means between the lower structure and the upper structure, slide regulating means for regulating the sliding direction of the seismic isolation means, a shear pin for releasing the restraint of the seismic isolation means when an earthquake occurs, and the upper structure In the seismic isolation device having the lift prevention means for preventing the lift of the quake, a fixing means for fixing the lift prevention means when a typhoon strikes is installed in front of and behind the lift prevention means. apparatus.   Seismic isolation means between the lower structure and the upper structure, slide regulating means for regulating the sliding direction of the seismic isolation means, a shear pin for releasing the restraint of the seismic isolation means when an earthquake occurs, and the upper structure In the seismic isolation device having the lifting prevention means for preventing the lifting of the lifting means, the fixing means installed in front and rear of the lifting prevention means, the fixing material mounting portion installed in the lower structure, and when the typhoon comes The seismic isolation device according to claim 1, wherein the seismic isolation device is constituted by a fixing material mounted in a gap between the fixing material mounting portion and the lifting prevention means.   Seismic isolation means between the lower structure and the upper structure, slide regulating means for regulating the sliding direction of the seismic isolation means, a shear pin for releasing the restraint of the seismic isolation means when an earthquake occurs, and the upper structure In the seismic isolation device having the lifting prevention means for preventing the lifting of the lifting means, the fixing means installed in front and rear of the lifting prevention means, the fixing material mounting portion installed in the lower structure, and when the typhoon comes An L-shaped groove in which the fixing material mounting portion mounts the fixing material, the fixing material mounting portion mounting the fixing material and the fixing material mounting portion and the floating prevention means. The seismic isolation device according to claim 1, further comprising a tightening bolt that is pressed against the slip prevention means.   Seismic isolation means between the lower structure and the upper structure, slide regulating means for regulating the sliding direction of the seismic isolation means, a shear pin for releasing the restraint of the seismic isolation means when an earthquake occurs, and the upper structure In the seismic isolation device having the lifting prevention means for preventing the lifting of the lifting means, the fixing means installed in front and rear of the lifting prevention means, the fixing material mounting portion installed in the lower structure, and when the typhoon comes An L-shaped groove in which the fixing material mounting portion mounts the fixing material, the fixing material mounting portion mounting the fixing material and the fixing material mounting portion and the floating prevention means. 4. The seismic isolation system according to claim 1, further comprising a fastening bolt that presses against the anti-grinding means, and further that the fixing member has a length that can be spanned between the pair of left and right fixing member mounting portions. apparatus.

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