HIGH TEMPERATURE BEHAVIOR OF SERIAL ISOLATION SYSTEM AND FIRE PROTECTION

摘要

This paper presents the numerical simulation of the temperature field of laminated rubber isolation bearings under high temperature. Small scale specimens are used to carry temperature conduction and temperature field distribution test. After experiencing a high temperature of 420 t, the isolation bearing model specimens and reinforced concrete columns should be made in seires. And pressure-cut reciprocating test on mechanical properties of the system will be conducted. The results show that properties of laminated rubber isolation bearings degradate quite serious under the action of high temperature. Rubber isolation bearings under bearing state began to change in distortion at a slightly high temperature. This suggests that it is very important for laminated rubber bearings with fire protection measures to ensure base-isolated structure bearing capacity security in practical projects.