Saturation Effect on the Coherency Loss of Spatially Varying Vertical Ground Motions
Source abstract
Abstract
The effect of the influence regularity of site saturation and water level on the coherency loss between spatially varying earthquake ground motions (SVEGMs) in a vertical direction is not yet clear. Therefore, taking an onshore-offshore site as an example, the influence regularity of site saturation and water level on the coherency loss of SVEGMs in a vertical direction was studied, in which the saturation degree of the whole site (SD), the groundwater level (GWL), and the thickness of the surface water layer (WLT) were considered. Under each case mentioned above, a large number of vertical in-plane SVEGMs were synthesized and then correspondingly, the mean lagged coherency loss and phase angle of coherence function were obtained, and a series of comparisons were carried out to shed light on the varying trend of the value of lagged coherency loss and phase angle, with predefined parameters. The results showed that SD, GWL, and WLT possess significant effects on the varying trend of the coherence function of vertical SVEGMs.
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Research context
OpenAlex topics: Geotechnical Engineering and Underground Structures · Seismic Performance and Analysis · Dam Engineering and Safety
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water, Changjiang River Scientific Research Institute, Wuhan 430010, China
Funding
Knowledge Innovation Program of Wuhan-Shuguang · National Natural Science Foundation of China · China Postdoctoral Science Foundation
References (29)
Show source-provided references
1. Simulation of spatially varying non-Gaussian and nonstationary seismic ground motions by the spectral representation method10.1061/(ASCE)EM.1943-7889.0001371 ↗
2. A modified spectral representation method to simulate non-Gaussian random vector process considering wave-passage effect10.1016/j.engstruct.2019.109587 ↗
3. How distribution characteristics of a soil property affect probabilistic foundation settlement—From the aspect of the first four statistical moments10.1139/cgj-2019-0089 ↗
4. Simulation of fully nonstationary spatially variable ground motions on a canyon site10.1016/j.soildyn.2018.08.030 ↗
5. Numerical study on site response considering ground motion spatial variation10.1016/j.soildyn.2019.105836 ↗
6. Simulation of fully non-stationary spatially varying ground motions considering nonlinear soil behavior10.1016/j.soildyn.2019.105954 ↗
7. Simulation of spatially varying seafloor ground motions with random seawater layer and complex terrain10.1016/j.soildyn.2018.02.007 ↗
8. Bureau, G. (1986, January 24–28). New Considerations for Offshore Seismic Response Studies. Proceedings of the Third U.S. National Conference on Earthquake Engineering, Vol. I, Charleston, SC, USA.
9. Feng, D.Y. (1988). Theories and Applications of Seismic Wave, Seismological Press. (In Chinese).
10. Crouse, C.B., and Quilter, J. (1991, January 20–23). Seismic Hazard Analysis and Development of Design Spectra for Maul A Platform. Proceedings of the Pacific Conference on Earthquake Engineering, Vol. III, Auckland, New Zealand.
11. Analysis of earthquake recordings obtained from the Seafloor Earthquake Measurement System (SEMS) instruments deployed off the coast of southern California10.1785/BSSA0890010260 ↗
12. Effect of seawater on incident plane P and SV waves at ocean bottom and engineering characteristics of offshore ground motion records off the coast of southern California, USA10.1007/s11803-014-0222-4 ↗
13. Theoretical modeling and numerical simulation of seismic motions at seafloor10.1016/j.soildyn.2015.05.016 ↗
14. Theoretical modeling of spatially varying ground motions under ice-seawater interface and earthquake analysis of cable-stay bridges10.1016/j.soildyn.2019.01.032 ↗
15. Synthesis of spatially correlated ground motions at varying sites based on vector-valued seismic hazard deaggregation10.1016/j.soildyn.2012.04.009 ↗
16. Modeling and Simulation of Spatially Correlated Ground Motions at Multiple Onshore and Offshore Sites10.1080/13632469.2016.1172375 ↗
17. Simulation of spatially variable seismic underground motions in saturated double-phase media with overlying water excited by SV-wave and difference from P-wave incidence10.1016/j.soildyn.2019.04.009 ↗
18. Simulation of Spatially Correlated Multipoint Ground Motions in a Saturated Alluvial Valley10.1155/2021/7056096 ↗
19. Modelling and simulation of spatially varying earthquake ground motions at sites with varying conditions10.1016/j.probengmech.2011.09.002 ↗
20. The indirect boundary integral equation method for the broadband scattering of plane P, SV and Rayleigh waves by a hill topography10.1016/j.enganabound.2018.09.018 ↗
21. The scattering of plane P, SV waves by twin lining tunnels with imperfect interfaces embedded in an elastic half-space10.1016/j.tust.2018.12.024 ↗
22. A coherency model for spatially varying ground motions10.1002/(SICI)1096-9845(199601)25:1<99::AID-EQE540>3.0.CO;2-C ↗
23. Effects of spatially variable ground motions on the seismic response of a skewed, multi-span, RC highway bridge10.1016/j.soildyn.2004.11.016 ↗
24. Liao, S., Zerva, A., and Stephenson, W.R. (2007, January 18–21). Seismic spatial coherency at a site with irregular subsurface topography. Proceedings of the Sessions of Geo-Denver, Denver, CO, USA. Geotechnical Special Publication No. 170.10.1061/40914(233)11 ↗
25. Influence of irregular topography and random soil properties on coherency loss of spatial seismic ground motions10.1002/eqe.1077 ↗
26. Soil-structure-interaction analysis in time domain10.1016/0029-5493(89)90249-5 ↗
27. Interpretation of seismic vertical amplification observed at an array site10.1785/0119990068 ↗
28. Clough, R.W., and Penzien, J. (1993). Dynamics of Structures, McGraw Hill. [2nd ed.].
29. Sobczky, K. (1991). Stochastic Wave Propagation, Kluwer Academic Publishers.