Dynamic soil–structure interaction effects on the seismic response of asymmetric buildings

Abstract An approach is formulated for the linear analysis of three-dimensional dynamic soil–structure interaction of asymmetric buildings in the time domain, in order to evaluate the seismic response behaviour of torsionally coupled buildings. The asymmetric building is idealized as a single-storey three-dimensional system resting on different soil conditions. The soil beneath the superstructure is modeled as linear elastic solid elements. The contact surface between foundation mat and solid elements of soil is discretised by linear plane interface elements with zero thickness. An interface element is further developed to function between the rigid foundation and soil. As an example, the response of soil–structure interaction of torsionally coupled system under two simultaneous lateral components of El Centro 1940 earthquake records has been evaluated and the effects of base flexibility on the response behaviour of the system are verified.

[1]  H. Shakib,et al.  EVALUATION OF ACCIDENTAL ECCENTRICITY IN BUILDINGS DUE TO ROTATIONAL COMPONENT OF EARTHQUAKE , 2002 .

[2]  W. K. Tso,et al.  A strength distribution criterion for minimizing torsional response of asymmetric wall‐type systems , 2002 .

[3]  T. K. Datta,et al.  Inelastic response of torsionally coupled system to an ensemble of nonstationary random ground motion , 1993 .

[4]  K. S. Sivakumaran,et al.  Seismic analysis of asymmetric multistorey buildings including foundation interaction and P-Δ effects , 1994 .

[5]  Thomas Paulay.  SEISMIC TORSIONAL EFFECTS ON DUCTILE STRUCTURAL WALL SYSTEMS , 1997 .

[6]  Thambirajah Balendra,et al.  Modal damping for torsionally coupled buildings on elastic foundation , 1982 .

[7]  Anil K. Chopra,et al.  Elastic Earthquake Analysis of a Class of Torsionally Coupled Buildings , 1977 .

[8]  Anil K. Chopra,et al.  Simple Model for Earthquake Response Studies of Torsionally Coupled Buildings , 1981 .

[9]  A. M. Chandler,et al.  Parametric earthquake response of torsionally coupled buildings with foundation interaction , 1987 .

[10]  A. M. Chandler,et al.  Code design provisions for torsionally coupled buildings on elastic foundation , 1987 .

[11]  A. M. Chandler,et al.  Evaluation of factors influencing the inelastic seismic performance of torsionally asymmetric buildings , 1991 .

[12]  Anil K. Chopra,et al.  Elastic earthquake analysis of torsionally coupled multistorey buildings , 1977 .

[13]  Chi-Chang Lin,et al.  Systematic assessment of irregular building-soil interaction using efficient modal analysis , 2001 .

[14]  Anil K. Chopra,et al.  Dynamics of Structures: Theory and Applications to Earthquake Engineering , 1995 .

[15]  A. M. Chandler,et al.  Structure-foundation interaction in the earthquake response of torsionally asymmetric buildings , 1992 .

[16]  J. Lysmer,et al.  Finite Element Method Accuracy for Wave Propagation Problems , 1973 .

[17]  Ryszard Buczkowski,et al.  ELASTO-PLASTIC INTERFACE MODEL FOR 3D-FRICTIONAL ORTHOTROPIC CONTACT PROBLEMS , 1997 .

[18]  Wen-Hwa Wu,et al.  Efficient modal analysis for structures with soil‐structure interaction , 1995 .

[19]  K. S. Sivakumaran,et al.  Seismic analysis of asymmetric building-foundation systems , 1992 .

[20]  G. Bfer,et al.  An isoparametric joint/interface element for finite element analysis , 1985 .

[21]  T. G. Tsicnias,et al.  Soil‐structure interaction effects on the steady‐state response of torsionally coupled buildings , 1984 .