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BASSIN Note: this is a legacy software. Additional information about this software may be available on its wiki page. | 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 | | Keywords: | abutment; bridge; seismic | | Data Format: | | | Design Code: | | | Languages: | English | | WWW: | http://nisee.berkeley.edu/elibrary/Software/BASSINZIP | | Publisher: | | | Distributor(s): | National Information Service for Earthquake Engineering
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