期刊
JOURNAL OF AEROSPACE ENGINEERING
卷 33, 期 6, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)AS.1943-5525.0001202
关键词
Multidimensional ground motions; Transmission tower; Rocking component; Torsion component; Seismic responses
资金
- National Natural Science Foundation of China [51808099]
- Fundamental Research Funds for the Central Universities [DUT20RC(3)005]
Most current studies on the seismic responses of transmission towers are performed using two or three translational components of ground motion as earthquake inputs. In this study, a novel surface fitting method (SFM) for extracting rotational components from a dense array is presented based on which two sets of rotational components are derived from the translational earthquake recordings on the SMART-1 array. The seismic response of the transmission tower under multidimensional ground motions that included rocking and torsion components are calculated and analyzed. The results show that three rotational components can largely contribute to the seismic responses with respect to the displacements and accelerations at nodes, as well as the element internal force distribution and base reactions. (c) 2020 American Society of Civil Engineers.
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