A STUDY ON STRUCTURAL PROPERTIES OF DOUBLE LAYER SPACE TRUSS WITH ECCENTRIC JOINTS IN COMPRESSIVE CHORD MEMBERS

Abstract

The space truss is subject to failure by the member buckling of compressive chord members. After buckling, a member loses most of its strength, shedding force to neighbor members. This causes spreading member failures and a progressive collapse, which could take only seconds to develop. We propose a method to control collapse mechanism to improve the plastic deformation capacity of the space truss. The method is to use the compressive chord members with eccentric joints in space truss. We clarified the structural properties of this space truss by experiment and numerical analysis.