It is known that the seismic response of a structural system is highly influenced, in addition to the earthquake input, by the dynamic characteristics of the system itself. This paper presents an approach for the identification of the characteristics of the structural system resisting to horizontal loads which enables to satisfy given seismic performance objectives. This is achieved by consider...

To improve the safety performance of important rooms, such as operating rooms and disaster command centers, during an earthquake, a novel partial seismic isolation system suitable for new existing frame structures is proposed, optimization analysis carried out. Using finite element numerical simulation method, models ordinary structure isolated were established. Considering response room, desig...

An aqueduct is a bridge-like structure that supports canal passing over river or low ground, and it an important part of water conveyance system. Aqueduct piers are extremely vulnerable to damage during strong earthquakes can result in structural collapse. Further, excessive seismic displacement will also fracture aqueduct’s rubber water-stop interrupt the normal service after earthquake. There...

The seismic activity in some parts of the world requires that the performance of structures under this type of excitation, is carefully evaluated. In regions where seismicity is insignificant, the conventional design approach aims at the design of structural members in such a way that all static and dynamic loads (such as wind load) are withstood elastically. However, in cases where seismic exc...

A seismic isolated structure is usually a long-period structural system, which may encounter a lowfrequency resonance problem when subjected to a near-fault earthquake that usually has a long-period pulse-like waveform. This long-period wave component may result in an enlargement of the base displacement and a decrease of the isolation efficiency. To overcome this problem, a rolling-based seism...

A ‘‘smart’’ base isolation strategy is proposed and shown to effectively protect structures against extreme earthquakes without sacrificing performance during the more frequent, moderate seismic events. The proposed smart base isolation system is composed of conventional low-damping elastomeric bearings and ‘‘smart’’ controllable ~semiactive! dampers, such as magnetorheological fluid dampers. T...