Abstract
ABSTRACT Presently, the effects of vertical components of ground motions are investigated on the performance of the base isolated building. The response assessment of the isolated building is carried out by nonlinear dynamic analysis under a set of recorded ground motions, involving both horizontal and vertical components. It is demonstrated that the vertical ground motion increases the isolation efficiency but results in extensively large displacement of the bearing. Two types of isolation bearing, namely, the conventional lead-rubber-bearing (LRB) and shape-memory-alloy-rubber-bearing (SMARB) are considered. The superior performance of the latter is established in circumventing the adverse consequences of the vertical ground motions.
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