BASE ISOLATION STRUCTURE

• Main Authors: SASAKI TOMOHIRO, AOYAMA YUYA, YUKAWA MASAKI
• Format: Patent
• Language: English; Japanese
• Published: 17.03.2023
• 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 provide a base isolation structure capable of lengthening a natural period while reducing a vertical space between a lower structure and an upper structure.SOLUTION: A base isolation structure 1 provided between a lower structure 2 and an upper structure 3 includes a fixed structure 10 fixed to one of the lower structure 2 and the upper structure 3, a movable structure 20 supported by the other of the lower structure 2 and the upper structure 3 movably in a horizontal direction, a tension member 30 having one end fixed to the other of the lower structure 2 and the upper structure 3, and a conversion mechanism 40 supported by the fixed structure 10, connected to the tension member 30 and the movable structure 20 and configured to convert a vertical load applied from the movable structure 20 into a tensile force of the tension member 30 so as to reduce a horizontal restoring force applied from the tension member 30 to either of the lower structure 2 and the upper structure 3.SELECTED DRAWING: Figure 1 【課題】下部構造物と上部構造物との間の上下方向のスペースを小さくしながら固有周期を長周期化することが可能な免震構造を提供することである。【解決手段】下部構造物２と上部構造物３との間に設けられる免震構造１であって、下部構造物２及び上部構造物３の何れか一方に固定された固定構造１０と、下部構造物２及び上部構造物３の何れか他方に水平方向に移動自在に支持された可動構造２０と、下部構造物２及び上部構造物３の何れか他方に一端が固定された引張材３０と、固定構造１０に支持されるとともに引張材３０及び可動構造２０に連結され、引張材３０から下部構造物２及び上部構造物３の何れか他方に加えられる水平方向復元力が低減されるように、可動構造２０から加えられる上下方向荷重を引張材３０の引張り力に変換する変換機構４０と、を有することを特徴とする免震構造１。【選択図】図１