SEISMIC ISOLATOR

• Main Authors: OKITA TOYOMI, OKITA YOSHINARI
• Format: Patent
• Language: English; Japanese
• Published: 14.01.2021
• Subjects: BLASTING; BUILDING; BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; ENGINEERING ELEMENTS AND UNITS; FENCING; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MASTS; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; SHOCK-ABSORBERS; SPRINGS; SWIMMING OR SPLASH BATHS OR POOLS; TENTS OR CANOPIES, IN GENERAL; THERMAL INSULATION IN GENERAL; WEAPONS

To suppress vertical vibration of a building when the vertical vibrations occur in the ground.SOLUTION: A seismic isolator 1 includes a recessed part 2 and a protruding part 3 described in the following part. That is, the recessed part 2 has a recessed space 5 recessed in a vertical direction and may elastically deform in a horizontal direction. Further, the protruding part 3 has a protruding part 16 protruding in the vertical direction. The protruding part 3 is disposed above the recessed part 2 and the protruding part 16 is fitted in the recessed space 5. An inner surface 10 forming the recessed space 5 inclines so as to narrow downward. When a force acting upward is exerted on the recessed part 2, a force acting perpendicular to inclination of the inner surface 10 and outward is exerted on the inner surface 10. Then, the force acting perpendicular to the inclination of the inner surface and outward expands the recessed part 2 in the horizontal direction.SELECTED DRAWING: Figure 2 【課題】地盤に上下方向の振動が発生したときに、建物の上下方向への振動を抑制する。【解決手段】免震装置１は、次の凹状部２および凸状部３を備える。すなわち、凹状部２は、上下方向に窪む凹空間５を有し、水平方向に弾性変形可能である。また、凸状部３は、上下方向に突き出る凸部１６を有する。また、凸状部３が凹状部２の上側に配置されて凹空間５に凸部１６が嵌まっている。また、凹空間５を形成する内側面１０は、下側に向かって窄むように傾斜している。そして、凹状部３に、上側に向かう力が作用すると、内側面１０には、内側面１０の傾斜に垂直かつ外側に向かう力が作用し、内側面の傾斜に垂直かつ外側に向かう力により、凹状部２が水平方向に拡大する。【選択図】図２