<abstract xmlns="http://www.w3.org/1999/xhtml"><p>At present, Romanian code for seismic design P100 is in a process of assimilation of the requirements from the equivalent European code, EN-1998-1. However, the unique characteristics of the Vrancea earthquakes require additional adjustment for some relations. One of these relations regards the simplified calculation of inelastic displacements and represents the main objective of this article. The paper uses dynamic nonlinear analysis performed on single degree of freedom systems as the main investigation tool. For all the analyses, two hysteretic models are used: Takeda and kinematic hardening. In the beginning, the paper presents the influence of overstrength on inelastic displacements for several behaviour factors. Next, the overstrength-period diagram is proposed based on a case study. Finally, the spectrum of c, the ratio between inelastic and elastic displacement is calculated. The main result of the study is the simplified equations proposed for c factor, relations that can be successfully used in current design.</p></abstract>

At present, Romanian code for seismic design P100 is in a process of assimilation of the requirements from the equivalent European code, EN-1998-1. However, the unique characteristics of the Vrancea earthquakes require additional adjustment for some relations. One of these relations regards the simplified calculation of inelastic displacements and represents the main objective of this article. The paper uses dynamic nonlinear analysis performed on single degree of freedom systems as the main investigation tool. For all the analyses, two hysteretic models are used: Takeda and kinematic hardening. In the beginning, the paper presents the influence of overstrength on inelastic displacements for several behaviour factors. Next, the overstrength-period diagram is proposed based on a case study. Finally, the spectrum of c, the ratio between inelastic and elastic displacement is calculated. The main result of the study is the simplified equations proposed for c factor, relations that can be successfully used in current design.

STUDY ON RELATION BETWEEN INELASTIC AND ELASTIC DISPLACEMENT FOR VRANCEA EARTHQUAKES

Assistant, Technical University of Civil Engineering, Faculty of Civil, Industrial and Agrarian Structures

Associate Professor, Technical University of Civil Engineering, Faculty of Civil, Industrial and Agrarian Structures

Modelling in Civil Environmental Engineering

At present, Romanian code for seismic design P100 is in a process of assimilation of the requirements from the equivalent European code, EN-1998-1. However,...

STUDY ON RELATION BETWEEN INELASTIC AND ELASTIC DISPLACEMENT FOR VRANCEA EARTHQUAKES

Published Online: Dec 31, 2013

Page range: 33 - 40

DOI: https://doi.org/10.2478/mmce-2013-0016

Keywords
inelastic displacement, behaviour factor, overstrength, elastic displacement

This content is open access.

STUDY ON RELATION BETWEEN INELASTIC AND ELASTIC DISPLACEMENT FOR VRANCEA EARTHQUAKES

Published Online: Dec 31, 2013

Page range: 33 - 40

DOI: https://doi.org/10.2478/mmce-2013-0016

Keywordsinelastic displacement, behaviour factor, overstrength, elastic displacement

This content is open access.

Keywords
inelastic displacement, behaviour factor, overstrength, elastic displacement