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Home / Software Database / Categories / Seismic and Earthquake

BASSIN

Note that the status of this software is "legacy" which may indicate that this software is no longer available or in use.
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Software Name: BASSIN
Description: Legacy software from 1983 to compute three-dimensional dynamic response of an arbitrarily configured, elastic, bridge/abutment/backfill system. Source code in FORTRAN and related reports can be downloaded from the earthquake engineering online archive maintained by University of California Berkeley. BASSIN: Dynamic Analysis of Bridge/Abutment/Backfill Systems Subjected to Traveling Seismic Waves Dendrou, Basile Agbabian Associates, El Segundo, California, 1983, The BASSIN methodology has the following features: It computes the three-dimensional dynamic response of an arbitrarily configured, elastic, bridge/abutment/backfill system. It assumes this system to be underlain by a soil continuum that is represented as an elastic half- space. It represents seismic input motions as being harmonic and induced by planar P-, SV-, SH-, or Rayleigh waves with arbitrary wavelength, amplitude, and direction of incidence. The methodology uses a substructure approach in which the structure (which comprises the bridge, abutment, and backfill) is represented using a three-dimensional finite element model, and the underlying soil continuum is represented using a boundary element approach. The finite element model defines the stiffness matrix, mass matrix, and fixed-base nodes for the structure. The boundary element approach characterizes the underlying soil medium using frequency- dependent impedance matrices and driving force vectors that also incorporate the free-field wave motions. Compatibility and equilibrium requirements at the soil/structure interface are used to couple these substructures. The steady-state response of the soil/structure system is then computed.
Category: Seismic and Earthquake
License Type: Freeware
Price: Free (Last updated: 2011-11-14)
Keywords: abutment, bridge, seismic
Data Format:
Design Code:
Languages: English
Platform:
Source Code
Status
legacy
WWW:
http://nisee.berkeley.edu/elibrary/Software/BASSINZIP
Publisher:
Distributor(s):
National Information Service for Earthquake Engineering

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