BASE-ISOLATION STRUCTURE

• Main Authors: SASAKI TOMOHIRO, AOYAMA YUYA, YUKAWA MASAKI
• Format: Patent
• Language: English; Japanese
• Published: 18.01.2023
• 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 achieving a longer natural period without making tension members longer.SOLUTION: The present invention relates to base-isolation structures 1, 100 and 200 provided between a lower structural object 2 and an upper structural object 3, and comprising: an upper structure 10 fixed to the upper structural object 3; a lower joint material 21 fixed to the lower structural object 2; and a first intermediate structure 30 provided between the upper structure 10 and a lower structure 20, wherein the first intermediate structure 30 has: a first intermediate structure upper end part 30a of an upper end part; a first intermediate structure lower end part 30b of a lower end part; and a first intermediate structure connection part 30c connecting the first intermediate structure upper end part 30a and the first intermediate structure lower end part 30b. The base-isolation structures 1, 100 and 200 have: a first tension member 40 provided between an upper structure lower end part 10b of the upper structure 10 and the first intermediate structure upper end part 30a; and a second tension member 50 provided between a lower structure upper end part 20b of the lower structure 20 and the first intermediate structure lower end part 30b.SELECTED DRAWING: Figure 1 【課題】引張材を長くすることなく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、１００、２００であって、上部構造物２に固定された上側構造１０と、下部構造物３に固定された下側接合材２１と、上側構造１０と下側構造２０の間に設けられる第一中間構造３０と、を備え、第一中間構造３０は、上端部の第一中間構造上端部３０ａと、下端部の第一中間構造下端部３０ｂと、第一中間構造上端部３０ａと第一中間構造下端部３０ｂとを連結する第一中間構造連結部３０ｃと、を有し、上側構造１０の上側構造下端部１０ｂと第一中間構造上端部３０ａとの間に設けられる第一引張材４０と、下側構造２０の下側構造上端部２０ｂと第一中間構造下端部３０ｂとの間に設けられる第二引張材５０と、を有することを特徴とする免震構造１、１００、２００。【選択図】図１