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Structural behavior of supported tubular bus structure in substations under seismic loading.
- Source :
-
Engineering Structures . Nov2018, Vol. 174, p861-872. 12p. - Publication Year :
- 2018
-
Abstract
- Highlights • Quasi-static tests of temperature members under cyclic loading were conducted. • Ground motion simulation experiments of substation system were conducted. • Numerical analysis on supported bus structure under earthquakes were performed. • Design recommendations for supported tubular bus structure were proposed. Abstract This paper presents an experimental investigation on structural behavior of a temperature member used to interconnect the supported tubular bus structure of 220 kV substation, and the dynamic interaction between the components of a bus insulator substructure under seismic loading. Finite element (FE) analysis was performed to analyze the seismic stress of the supported tubular bus structure. The results of quasi-static experiments showed an elastic deformation characteristic, while the temperature member exhibited a damping ratio of 4–7%, and elastic stiffness of 13.4 N/mm. Compared with the stand-alone configuration, the peak accelerations of insulators connected to the tubular bus through the temperature member were reduced by 10–30%, while the maximum displacements were reduced by 30%. The maximum displacement responses of insulators connected to the tubular bus through clips were roughly the same as those under the stand-alone configuration, while the peak accelerations were reduced by 30–50%. When the ground acceleration reached the value of 6.2 m/s2, the root stress exceeded the yield strength of the material. Under this condition the insulators may experience fracture or collapse. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01410296
- Volume :
- 174
- Database :
- Academic Search Index
- Journal :
- Engineering Structures
- Publication Type :
- Academic Journal
- Accession number :
- 132490861
- Full Text :
- https://doi.org/10.1016/j.engstruct.2018.07.077