This paper discusses the origins of torsion and its effect on the response of structures with a
focus on the contribution of experimental data. The fact that torsion increases the stresses in …

In view of the stronger vulnerability of horizontally irregular structures during earthquakes,
numerous studies have been made since mid-1950 s. Unfortunately, research progress in …

Torsion in base-isolated structures with inelastic elastomeric isolation systems due to
bidirectional lateral ground motion is studied. In a companion paper by the writers, torsional …

The lateral-torsional response of base-isolated structures, with sliding isolation system due
to bidirectional lateral ground motion, is studied. The objective of the study is to identify the …

Nonlinear static procedures (NSPs), also known as “pushover methods”, represent the most
used tool in the professional practice for assessment of seismic performance of building …

SUMMARY A generalized multi‐mode pushover analysis procedure was developed for
estimating the maximum inelastic seismic response of symmetrical plan structures under …

Free vibration analysis is presented for general tall building structures, which may consist of
any combination of frames, shear walls, structural cores and coupled walls. Emphasis of the …

This paper presents an analysis of the triply coupled vibration of asymmetric wall-frame
structure in tall buildings. The governing equation of the natural vibration and its …

The Galerkin method of weighted residuals is used to determine the frequencies and
associated mode shapes of asymmetric shear wall‐frame structures. The governing …

The history of the static seismic provisions for asymmetric structures, mainly as manifested in
the evolution of the code-specified design eccentricity ed formula, ie ed= αie±βb, is briefly …