Applications of passive and hybrid structural control using architectural cladding systems for critical structures

摘要

Passive control approaches for response modification are particularly attractive for critical facilities that must be maintained in a serviceable state following an earthquake. When properly designed, they require almost no maintenance and are capable of providing high levels of reliability over the economic lifetime of the critical facility itself. Architectural cladding has the potential, when properly designed, to function as a passive damping subsystem in a building design. Damping is generated by ductile deformation of what are called "advanced" cladding connections which also maintain panel alignment and overall cladding integrity during earthquakes. A number of these advanced connectors have been designed and tested in the lab. Design properties inferred from these tests can then be used in a numerical optimization design procedure that is described. Hybrid control approaches in which active control elements are combined with the passive cladding system are also shown to provide significant benefits but at the expense of reliability.