USING ENERGY -BASED PUSHOVER METHODS IN SEISMIC EVALUATION OF STEEL BRACING STRUCTURES

Abstract eng:
Nonlinear static analysis is a simple and practical method to evaluate seismic demands in structures that has been considered in most of seismic instructions in recent years. Since the concept of energy is more theoretic than other similar methods, the present article evaluated the models of lateral loads discussed in the concept of energy. This approach can be updated in the steps of nonlinear static analysis or remains constant in all steps of the analysis. One of updated pushover models called “story shear-based pushover" has used the concept of energy to estimate the target displacement; so that instead of control point displacement, all stories displacement has been used. Multiple mode load model (MPA) has used energy method to adjust single freedom degree curve and eliminate the problems of rood point displacement reverse in loading models. In the present research, different bracing structures have been subject to lateral loading to evaluate energy-based methods, and the results were compared and assessed by dynamic analytical results. The results of Steel Bracing structural analysis show that energy-based methods have been successful to estimate the storey shear values as the most important parameter in the design of structures.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket