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[1]WANG Duozhi,LI Tianchi,YU Guangbin,et al.Seismic Vulnerability Analysis of Rapidly-assembled Aluminum Alloy Repair Towers[J].Journal of Seismological Research,2025,(03):519-530.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0054 ]

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Seismic Vulnerability Analysis of Rapidly-assembled Aluminum Alloy Repair Towers

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: Number of periods: 2025 03 Page number: 519-530 Column: Public date: 2025-04-15

Title:: Seismic Vulnerability Analysis of Rapidly-assembled Aluminum Alloy Repair Towers

Author(s):: WANG Duozhi¹; LI Tianchi²; YU Guangbin³; Chizhik Sergei³; (1.Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,Heilongjiang,China)(2.POWERCHINA Chengdu Engineering Co.,Ltd.,Chengdu 610072,Sichuan,China)(3.Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)

Keywords:: aluminum alloy repair tower; the Probabilistic Seismic Demand model; aftershocks; mainshock-aftershock sequences; seismic fragility

CLC:: P315.92

DOI:: 10.20015/j.cnki.ISSN1000-0666.2025.0054

Abstract:: In this paper,we use the finite element software ABAQUS to establish the numerical model of the rapidly-assembled aluminum alloy repair tower.We set the spectral acceleration Sa(T₁)corresponding to the fundamental period T₁ as the seismic intensity parameter and the inter-segment displacement angle ISDR as the seismic demand parameter of the structure,then establish the Probabilistic Seismic Demand Model(PSDM)of the rapidly-assembled aluminum alloy repair tower by using the Limit State Division method.On this basis,we select 20 groups of ground motion records of the mainshock-aftershock sequences from the U.S.Pacific Earthquake Center(PEER)database.Applying IDA method to these records,we obtain the seismic response of the repair tower.Finally,we evaluate the susceptibility of the repair tower under the action of the aftershocks and the mainshock-aftershock sequences.We analyze the aseismic capacity of the repair tower under the action of the ground motion with 0° incidence angle and 90°incidence angle.The conclusions are as follows:①With regard to the aftershocks,when the ground motions' incidence angle is 0°,the collapse probability of the repair tower under the action of the high-frequent earthquakes or the medium-frequent earthquakes is almost 0; the collapse probability under the action of rare earthquakes is 43.9%.When the ground motions' incidence angle is 90°,the collapse probability of the repair tower under the action of the high-frequent earthquakes or the medium-frequent earthquakes or the rare earthquakes is almost 0.②With regard to the mainshock-aftershock sequences,when the ground motions' incidence angle is 0°,the collapse probability of the repair tower under the action of the high-frequent earthquakes is almost 0; the collapse probability under the action of the medium-frequent earthquakes is 2.8%; the collapse probability under the action of the rare earthquakes is 57.6%.When the ground motions' incidence angle is 90°,the collapse probability of the repair tower under the action of the high-frequent earthquakes or the medium-frequent earthquakes is almost 0; the collapse probability of the repair tower under the action of the rare earthquakes is 7.2%.

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Last Update: 2025-04-15