Abstract

Info

Author(s):: QU Wen-jun; DONG Lang; ZHU Peng; Department of Structural Engineering, Tongji University

Keywords:: communication workshop; cable tray; suspension system; suspender; layout; lateral stiffness

Abstract:: According to the requirements for seismic resistance of lifeline engineering, research on the lateral performance of cable tray suspension systems in communication workshop with vertical, trapezoidal and composite suspender layout was conducted. The lateral stiffness of suspension systems with the three kinds of suspender layouts was derived by theoretical methods and the formulas were verified by finite element analysis software ANSYS, respectively. Then comparison was carried out. The study results show that the lateral stiffness of cable tray suspension systems with vertical and trapezoidal suspender layout is small, which is mainly determined by the gravity stiffness. The initial stiffness against lateral displacement of suspension system with composite suspender layout is much larger. Suspension system satisfies the seismic fortification requirement of “no damage in small earthquake and no collapsing in strong earthquake” in the case of composite suspender layout, which is verified as a more reasonable and efficient layout.