Indexed by : Journal paper

Date of Publication : 2020-09-01

Journal : Journal of Constructional Steel Research

Included Journals : EI  

Document Type : J

Issue : 172

Page Number : 106231

ISSN : 0143-974X

Key Words : Lattice boom Second-order analysis Local stability Effective length factor Initial imperfection

Abstract : Lattice booms, used in mobile cranes, are welded using slender high-strength steel tubes, and their carrying capacity is determined through the local stability of the chords. However, of the two methods for calculating it, the overall stability formula of axially compressed members is too conservative, and geometrically nonlinear analysis with imperfections is too complicated to apply. To achieve a more accurate and simple calculation of the local chord stability, a second-order analysis considering restraint from web members and initial geometric imperfections is proposed. This study demonstr

Translation or Not : no