文件列表:

PCDOS (0, 2000-02-23)
PCDOS\INPUT (0, 2000-02-23)
PCDOS\INPUT\EXAMPLE.DAT (3105, 1997-01-15)
PCDOS\INPUT\WAVEX.DAT (16016, 1997-01-15)
PCDOS\INPUT\WAVEY.DAT (16016, 1997-01-15)
PCDOS\OUTPUT (0, 2000-02-23)
PCDOS\OUTPUT\EXAMPLE.OUT (17121, 1997-01-15)
PCDOS\SOURCE (0, 2000-02-23)
PCDOS\SOURCE\A1.FOR (27204, 1997-01-15)
PCDOS\SOURCE\A2.FOR (12882, 1997-01-15)
PCDOS\SOURCE\B.FOR (8261, 1997-01-15)
PCDOS\SOURCE\BASIS.FOR (7721, 1997-01-15)
PCDOS\SOURCE\BASWIN.DEF (2619, 1997-01-15)
PCDOS\SOURCE\BASWIN.EXE (186240, 1997-01-15)
PCDOS\SOURCE\BASWIN.ICO (766, 1997-01-15)
PCDOS\SOURCE\C.FOR (17155, 1997-01-15)
PCDOS\SOURCE\COMPILE.BAT (769, 1997-01-15)
PCDOS\SOURCE\D.FOR (17756, 1997-01-15)
VAX (0, 2000-02-23)
VAX\INPUT (0, 2000-02-23)
VAX\INPUT\3DBASIS.DAT (3105, 1997-01-14)
VAX\INPUT\WAVEX.DAT (16016, 1997-01-14)
VAX\INPUT\WAVEY.DAT (1, 1997-01-14)
VAX\OUTPUT (0, 2000-02-23)
VAX\OUTPUT\3DBASIS.OUT (17116, 1997-01-14)
VAX\SOURCE (0, 2000-02-23)
VAX\SOURCE\3DBASIS.F (75636, 1997-01-14)

* files added to PCDOS directory, omitted from previous edition Program: 3D-BASIS Title: Nonlinear Dynamic Analysis of Three Dimensional Base Isolated Structures Developer: S. Nagarajaiah, A. M. Reinhorn, and M. C. Constantinou, Department of Civil Engineering, State University of New York at Buffalo 1991 Modified: H. Ozdemir, Techart, Los Altos, California PC DOS version 1992 Category: Nonlinear Structural Platform: VAX,VMS,f77; PC DOS 6,Microsoft Fortran version 5.1 Reference: Nagarajaiah, S., A.M. Reinhorn, and M.C. Constantinou, "3D-BASIS Nonlinear Dynamic Analysis of Three- Dimensional Base Isolated Structures," Report No. NCEER 91- 0005, National Center for Earthquake Engineering Research, State University of New York at Buffalo, February 1991. Summary: 3D-BASIS is a computer program for nonlinear dynamic analysis of three dimensional base isolated structures. The program 3D-BASIS is designed for modeling a frame-shearwall superstructure and an isolation system which may include elastomeric and/or sliding isolation systems combined with various hysteretic and viscous damping devices. The dynamic loading may consist of unidirectional or bidirectional lateral ground motion input at the base of the structure. The salient features of 3D-BASIS which make it specially suitable for analysis of base isolated structures with different isolation systems are: (1) capability to analyze isolation systems that are a combination of elastomeric and sliding isolation systems; (2) unified model capable of representing the biaxial behavior of either elastomeric or sliding bearings and other isolation devices; (3) capability to capture the highly nonlinear behavior of sliding isolation systems in plane motion; (4) pseudoforce solution algorithm for accurate and efficient solution of stiff differential equations that arise in sliding systems due to stick-slip behavior; (5) solution algorithm with the accuracy of predictor-corrector methods and efficiency suitable for analyzing large base isolated structures; and (6) capability to model multistory base isolated buildings and capture the lateral-torsional behavior under bidirectional earthquake motion. In addition, the simplicity of input requirements is an added advantage of 3D- BASIS. Program output includes: (1) peak values of base and story displacements, interstory drifts, base and story accelerations, story shears, structure shear and base shear; and (2) time histories of base and story displacements, base and story accelerations, structure shears, and force-displacement characteristics at individual isolators.

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