Response of Coupled Power Transmission Tower Line Systems Subjected to Blast Loads
Received Date: November 02, 2021; Published Date: Decemeber 14, 2021
A study on the effects of blast loads on tower-line coupling, single tower structure and tower-line structure system has been conducted and a variety of structural response variables have been compared. The modular and powerful finite element analysis software Dlubal- RFEM has been utilized for the blast-oriented linear implicit dynamic analysis of latticed transmission line structures covered in this study. The transient dynamic equilibrium equations of the tower have been directly solved by Newmark time integration method. Several study models from this work have indicated that there is up to nearly four-fold increase in support forces in uncoupled systems which subsequently greatly influence the planning, selection, design and detailing of support systems for such structures.
Keywords: Power transmission tower-line coupling; Blast load; Time history analysis; Finite element analysis