Community Research and Development Information Service - CORDIS

Abstract

This project has investigated how welded joints on steel frameworks can be made safer by applying a plastic design. In areas of the world such as the USA or Japan, steel frameworks are prone to brittle fracture during earthquake events. At the heart of an earthquake, shock (or seismic) waves are transmitted through the Earths crust, generating severe jerking and shaking movements at the surface. Standard steel frameworks with welded joints may not have the ability to absorb the seismic waves and suffer severe cracking or breakage. This is known as brittle failure. This project has investigated how welded steel components of large frameworks can be manufactured to withstand brittle failure. To develop a safe (plastic) steel framework, the partners consider the type of strains applied onto the structure, the toughness of the steel and if the welds at hinges are of the same grade. Plastic designed steels are safer as they can absorb shock waves and exhibit ductile (flexible) behaviour. This project has investigated the effect of large strains on hinges which are located near welded zones. Tests have shown that a high degree of ductility is needed for hinges as in practice they interact with welded joints.

Additional information

Authors: DEFOURNY J, CRM (FR);D'HAEYER, CRM (FR)
Bibliographic Reference: EUR 18523 EN (1998) 82pp.
Availability: Available from OOPEC Sales agents
ISBN: EUR 18523 EN (1998) 82pp.
Record Number: 199910017 / Last updated on: 1999-02-11
Category: PUBLICATION
Original language: en
Available languages: en
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