Seismic Assessment of Isolated Bridge configurations adopting a Performance-Based Earthquake Engineering (PBEE) methodology.
Ultima modifica: 2013-04-05
Sommario
Performance-Based Earthquake Engineering (PBEE) aims to quantify the seismic performance and risk of engineered facilities using metrics that are of immediate use to both engineers and stakeholders.
A recent bridge performance-based analysis framework using the Pacific earthquake Engineering Research Center (PEER) platform OpenSees with a three-dimensional (3D) ground-foundation graphical user interface was developed to assess repair costs for a number of seismic isolation and supporting soil profile configurations.
The paper aims to exercise and develop this framework highlighting the potential beneficial effect of isolation devices in reducing the bridge repair cost and time quantities.
In particular, the study is concerned with a 90 meter long, single-column, two – span bridge. Several configurations of abutments and column connections with isolation devices are presented.
The beneficial contribution of the isolation technique is assessed under different supporting soil profile deformability conditions.
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