title: The effect analysis of strain rate on power transmission tower-line system under seismic excitation.
abstract: The effect analysis of strain rate on power transmission tower-line system under seismic excitation is studied in this paper. A three-dimensional finite element model of a transmission tower-line system is created based on a real project. Using theoretical analysis and numerical simulation, incremental dynamic analysis of the power transmission tower-line system is conducted to investigate the effect of strain rate on the nonlinear responses of the transmission tower and line. The results show that the effect of strain rate on the transmission tower generally decreases the maximum top displacements, but it would increase the maximum base shear forces, and thus it is necessary to consider the effect of strain rate on the seismic analysis of the transmission tower. The effect of strain rate could be ignored for the seismic analysis of the conductors and ground lines, but the responses of the ground lines considering strain rate effect are larger than those of the conductors. The results could provide a reference for the seismic design of the transmission tower-line system.
authors.affiliation: School of Civil and Hydraulic Engineering, Shandong University, Jinan 250061, China.
authors.forename: Li
authors.identifier: 0000-0002-9436-3560
authors.initials: L
authors.lastname: Tian
authors.affiliation: Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan 250013, China.
authors.forename: Wenming
authors.initials: W
authors.lastname: Wang
authors.affiliation: School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China.
authors.forename: Hui
authors.identifier: 0000-0001-7082-8071
authors.initials: H
authors.lastname: Qian