Failure Mode and Optimization for MSCSS with LRBs Based on IDA Method

The mega-sub controlled structure system with laminate rubber bearings is an emerging seismic control for high-rise buildings. high-order statically indeterminate numerous failure modes. To study the modes of structural and further improve its performance, dynamic equations finite element model were established. Ten different ground motions selected from Pacific Earthquake Engineering Research Center motion database incremental analysis (IDA). Based on results IDA, weakest mode was identified, path found. Two schemes proposed to optimize system, optimization compared. show that although IDA curves inputs are diverse, plastic hinges all formed sub-structures. Failures caused by either excessive floor drift or shear deformation bearings. By adjusting locations parameters dampers bearings, performance can be improved.