TY - JOUR
T1 - Probabilistic Seismic Capacity Analysis of a Novel Mid-rise Large-span Cassette Structure Using Multidirectional Pushover Method
AU - Chen, Zhi Peng
AU - Zhu, Songye
AU - Ma, Ke Jian
AU - Wu, Gang
N1 - Funding Information:
The authors greatly appreciate the financial support from the National Natural Science Foundation of China (Grant Nos. 51838004), the Key Special Project of Technology Boosts Economy 2020 of National Key Research and Development Program (SQ2020YFF0426587), and the Research Grants Council of Hong Kong (PolyU 152246/18E).
Publisher Copyright:
© 2021 Taylor & Francis Group, LLC.
PY - 2021
Y1 - 2021
N2 - This paper investigates a novel mid-rise large-span cassette structure. The unique limit state divisions of the cassette structure are studied by following the probabilistic seismic capacity analysis (PSCA) method. A numerical model is established and verified through the use of shake table test results. Multidirectional pushover analyses is performed, and the directional effect of the 3D cassette structure is considered. The uncertainty present in fourteen major structural parameters is also considered in the modelling by using Latin hypercube sampling (LHS). The probability density function (PDF), cumulative distribution function (CDF), coefficient of variability (COV) and PSCA curves are obtained. The probabilistic distributions of the PSCA curves suggest that the threshold values of the maximum storey drift ratios of the large-span cassette are 1/550, 1/200, 1/60, and 1/25 for the slight damage (SD), moderate damage (MD), extensive damage (ED) and complete damage (CD) limit states, respectively. Furthermore, the average median values and logarithmic standard deviations are also given for the further probabilistic seismic fragility analysis and structural assessment performed. Finally, sensitivity analyses are conducted to examine the effects of critical structural parameters on structural damage measures. The results show that the structural performance is more sensitive to material parameters than load parameters.
AB - This paper investigates a novel mid-rise large-span cassette structure. The unique limit state divisions of the cassette structure are studied by following the probabilistic seismic capacity analysis (PSCA) method. A numerical model is established and verified through the use of shake table test results. Multidirectional pushover analyses is performed, and the directional effect of the 3D cassette structure is considered. The uncertainty present in fourteen major structural parameters is also considered in the modelling by using Latin hypercube sampling (LHS). The probability density function (PDF), cumulative distribution function (CDF), coefficient of variability (COV) and PSCA curves are obtained. The probabilistic distributions of the PSCA curves suggest that the threshold values of the maximum storey drift ratios of the large-span cassette are 1/550, 1/200, 1/60, and 1/25 for the slight damage (SD), moderate damage (MD), extensive damage (ED) and complete damage (CD) limit states, respectively. Furthermore, the average median values and logarithmic standard deviations are also given for the further probabilistic seismic fragility analysis and structural assessment performed. Finally, sensitivity analyses are conducted to examine the effects of critical structural parameters on structural damage measures. The results show that the structural performance is more sensitive to material parameters than load parameters.
KW - Cassette structure
KW - large span mid-rise building
KW - limit state division
KW - multidirectional pushover analysis
KW - probabilistic seismic capacity analysis
KW - structural uncertainty
UR - http://www.scopus.com/inward/record.url?scp=85119956374&partnerID=8YFLogxK
U2 - 10.1080/13632469.2021.1999343
DO - 10.1080/13632469.2021.1999343
M3 - Journal article
AN - SCOPUS:85119956374
SN - 1363-2469
JO - Journal of Earthquake Engineering
JF - Journal of Earthquake Engineering
ER -