Akademik Veri Yönetim Sistemi
The 18th World Conference on Seismic Isolation, Energy Dissipation, and Active Vibration Control of Structures (18WCSI), Antalya, Türkiye, 6 - 10 Kasım 2023, ss.1-23, (Tam Metin Bildiri)
The vulnerable state of the important structures
(seismically isolated structures, tall buildings, major pipelines and tunnels,
large storage tanks, long-span bridges and others like this) under near-fault and long-period
ground motions has been recognized worldwide during numerous strong
earthquakes. Because, the assessment of long-period earthquake excitations to
important structures has gained growing interest. New generation Structural
Seismic Isolation Method (SSIM) and System (SSIS) developed for protecting Highly Reliable
Structures (HRS)*1 against strong earthquakes
including near-fault and long-period ground motions is
presented. This method mainly aims to eliminate the limitation and
vulnerability of the Conventional Application Method of Seismic Base Isolation
Devices (CAMSBID) structures. In this
approach by SSIM method using currently existing
conventional elastomeric isolators that have a period of up to 4 seconds the
structure is converted to a Structural Seismic Isolation System (SSIS) and
exhibits inverse pendulum behaviour thus keeping the natural-period of
the structure in a larger interval, which is greater than the
predominant-period of most earthquakes (including near-fault pulse). SSIM
method and SSIS system particularities, assessment, efficiency and application
results on high-rise building, nuclear containment structures and tower structures are presented in this paper. Results indicate that the responses of the SSIS structure is substantially lower than the
structures that use the CAMSBID method for Structures and the SSIS structure does not resonate.