| 摘要 |
PROBLEM TO BE SOLVED: To provide a foundation lower base-isolation sliding bearing structure which easily causes sliding by reducing a friction coefficient of a sliding surface while hardly causing heat accumulation of friction heat generated by sliding.SOLUTION: In the foundation lower base-isolation sliding bearing structure, a concrete foundation 3 of a building is supported on a ground 2 through two layers of foamed resin plates 5 and 6, and horizontal shaking caused by earthquakes brings about the slip between the two layers of foamed resin plates 5 and 6 so as to apply the base isolation to the building. Recesses and protrusions 7 and 8 are formed on one surface of at least one foamed resin plate 5 of the two layers of foamed resin plates 5 and 6. This increases surface pressure of sliding surfaces 5a and 6a so as to reduce the friction coefficient of the sliding surfaces 5a and 6a while the friction heat generated on the sliding surfaces 5a and 6a is easily discharged to the outside. |
