E3S Web Conf.
Volume 194, 20202020 5th International Conference on Advances in Energy and Environment Research (ICAEER 2020)
|Number of page(s)||8|
|Section||Energy Engineering and Energy Development and Utilization|
|Published online||15 October 2020|
Seismic vulnerability assessment of a high-rise molten-salt solar tower based on incremental dynamic analysis
1 Nanjing University of Science and Technology, Department of Civil Engineering, 210094 Nanjing, China
2 University College London, Department of Civil, Environmental and Geomatic Engineering, WC1E 6BT London, United Kingdom
3 China Energy Engineering Group Jiangsu Power Design Institute Co., Ltd, 211102 Nanjing, China
4 Nanjing University of Science and Technology, National Key Laboratory of Transient Physics, 210094 Nanjing, China
* Corresponding author: email@example.com
This paper investigates the seismic performance of a high-rise molten-salt solar tower by finite element modelling. The integrated and separated models for solar tower based on the concrete damage plastic model are validated by matching the behaviour of similar reinforced concrete chimney specimens. The modal analysis demonstrates the first four modes of the solar tower are translational vibration. Seismic simulations are developed through the incremental dynamic analysis. The most disadvantageous position of the tower is all concentrated in the opening section under multidirectional seismic excitations. The top displacement of the tower under bidirectional and three-directional earthquake actions is larger than that under unidirectional earthquake actions. The results of the seismic vulnerability assessment show that when the PGA equals to 0.035g, the tower will be intact; when the PGA equals to 0.1g (design peak ground acceleration), the probability of the moderate damage state is within 1.5%; when the PGA equals to 0.22g (maximum considered earthquake), the probability of the destruction state is below 0.7%. The seismic partitioned fragility analysis of the tower under multidirectional earthquake excitations illustrates that there are two peaks in the vulnerability surfaces. The anti-collapse analysis indicates the tower has a good seismic performance under multidirectional seismic excitations.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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