Work

Demonstration of torsional behaviour using vibration-based single-storey model with double eccentricities

Year: 2010

Type: article

Abstract: The use of single-storey schemes appears necessary in order to investigate lateral-torsional coupling in building structures. In this paper, the torsional behaviour of an eccentric single-storey system based on undamped free vibration analysis has been investigated with particular emphasis on double eccentricities. An eccentricity between the center of rigidity and the center of mass in a building system causes the different torsional behaviour during a seismic loading. This approach reveals clearly how the double eccentric system behaves in relationship with the natural frequencies and modes and translational or torsional motion of the modeling system. From the parametric analysis of such an approach the determinative role of the distance from the center of mass to the center of rotation corresponding to the torsional and lateral stiffness ratio of the system becomes an obvious means of defining the torsional behaviour. From the outcome of applying the model, the building model can be classified as Torsionally Stiff (TS) and Torsionally Flexible (TF) based on the way the model has been configured in terms of the loci of the centers of rotation.

Source: KSCE Journal of Civil Engineering

DOI: 10.1007/s12205-010-0557-y

Authors: R. Tabatabaei, H. Saffari

Institutions: Islamic Azad University Kerman, Shahid Bahonar University of Kerman

Language: English

Topic: Seismic and Structural Analysis of Tall Buildings

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,800

Funders: Monash University, Islamic Azad University