Torsional effects in structures subjected to strong ground motion

The dynamic characteristics and torsional behavior of structures during strong ground motion were investigated; both linear and nonlinear material behavior were considered. Emphasis was placed on the strong torsional coupling associated with the beating phenomenon in the seismic response of structures with small static eccentricity and closely spaced frequencies. In order to study the response of structures subjected to complex loading histories, structural models were analyzed through the use of a numerical procedure (Newmark's β method) combined with a generalized nonlinear material model in the force-displacement space. Parametric studies were made for the dynamic amplification of the torsional response of simple structural systems. An amplification factor of about 2.5 was observed for static eccentricity in structural response arising from earthquake ground excitation.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Lu, Shi

Contributors dc:contributor

• Hall, William J.

• Engineering, Civil

Statement dc:rights

• Copyright 1990 Lu, Shi

Language dc:language

eng

Identifier

AAI9026258
(UMI)AAI9026258

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19150