A Hybrid Approach Calculating Lateral Spreading Induced by Seismic Liquefaction
Joint Authors
Yang, Yanxin
Ma, Jianlin
Liu, Jianguo
Wang, Qinke
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-10
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
Liquefaction-induced lateral spreading has caused severe damages to the infrastructures.
To predict the liquefaction-induced lateral spreading, a hybrid approach was proposed based on the Newmark sliding-block model.
One-dimensional effective stress analysis based on the borehole investigation of the site was conducted to obtain the triggering time of liquefaction and acceleration time history.
Shear wave velocity of the liquefiable soil was used to estimate the residual shear strength of liquefiable soil.
The limit equilibrium analysis was conducted to determine the yield acceleration corresponding with the residual shear strength of liquefied soil.
The liquefaction-induced lateral spreading was calculated based on the Newmark sliding-block model.
A case study based on Wildlife Site Array during the 1987 Superstition Hills earthquake was conducted to evaluate the performance of the hybrid approach.
The results showed that the hybrid approach was capable of predicting liquefaction-induced lateral spreading and the calculated lateral spreading was 1.5 times the observed displacement in terms of Wildlife Site Array.
Numerical simulations with two other constitutive models of liquefiable sand were conducted in terms of effective stress analyses to reproduce the change of lateral spreading and excess pore water ratio over the dynamic time of Wildlife Site Array.
Results of numerical simulations indicated that the lateral spreading varied with the triggering time of liquefaction when different constitutive models were used.
The simulations using PM4sand and UBC3D-PLM constitutive models predicted 5.2 times and 4 times the observed lateral spreading, respectively.
To obtain the site response, the motions recorded at and below the ground surface were analyzed using the Hilbert–Huang transform.
The low-frequency content of the motion below the ground surface was amplified at the ground surface, and the liquefaction effect resulted in a shift of the frequency content.
By comparing the response spectra of the entire ground surface motion and the ground surface motion from the beginning to the triggering time of liquefaction, the liquefaction effect at the site was confirmed.
American Psychological Association (APA)
Yang, Yanxin& Liu, Jianguo& Ma, Jianlin& Wang, Qinke. 2020. A Hybrid Approach Calculating Lateral Spreading Induced by Seismic Liquefaction. Shock and Vibration،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1209846
Modern Language Association (MLA)
Yang, Yanxin…[et al.]. A Hybrid Approach Calculating Lateral Spreading Induced by Seismic Liquefaction. Shock and Vibration No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1209846
American Medical Association (AMA)
Yang, Yanxin& Liu, Jianguo& Ma, Jianlin& Wang, Qinke. A Hybrid Approach Calculating Lateral Spreading Induced by Seismic Liquefaction. Shock and Vibration. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1209846
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1209846