6533b863fe1ef96bd12c77fc

RESEARCH PRODUCT

Earthquake Excited Base-Isolated Structures Protected by Tuned Liquid Column Dampers: Design Approach and Experimental Verification

Alberto Di MatteoThomas FurtmüllerChristoph AdamAntonina PirrottaAntonina Pirrotta

subject

Optimal designBase-isolationOptimal designEngineeringbusiness.industryDirect methodBase (geometry)020101 civil engineering02 engineering and technologyGeneral MedicineWhite noiseStructural engineering0201 civil engineeringDamperShear (sheet metal)020303 mechanical engineering & transports0203 mechanical engineeringRange (statistics)SlabHybrid passive controlTLCDbusinessSettore ICAR/08 - Scienza Delle Costruzioni

description

Abstract In this contribution a direct approach for optimal design of a Tuned Liquid Column Damper (TLCD) device attached to the base slab of a base-isolated structure is presented, aiming at reducing the seismic displacement demand of the base-isolation subsystem. Assuming white noise base excitation, for a wide parameter range a direct optimization procedure yields design charts for optimal TLCD quantities. The performance of the base-isolated structure equipped with optimally tuned TLCD device in comparison to the simple base-isolated one is evaluated both numerically and experimentally. In a numerical study the system is subjected to the 44 records of the FEMA P-695 far-field ground motion set. The experimental studies are conducted on a three-story small-scale base-isolated shear frame model. From the results it can be concluded that a TLCD effectively controls the seismic response of earthquake excited low-damped base-isolated structures.

yearjournalcountryeditionlanguage
2017-01-01
10.1016/j.proeng.2017.09.060http://hdl.handle.net/10447/243883