Difference Analysis of Loess Seismic Subsidence between In Situ Experiment and Laboratory Test

Abstract:

Seismic subsidence of loess is a kind of disaster induced by strong ground motion in loess area, while seldom example of this subsidence was found in long time study, usually instead of laboratory test. An explosion ground motion in a typical loess field was designed to verify seismic subsidence of loess with natural condition and laboratory test of loess seismic subsidence was conducted in China. The result proved seismic subsidence of loess could be induced by explosion ground motion, while the maxmuim settlement of 3.3cm in the case of experiment is much less than 53cm with a moderate or strong dynamic stress in laboratory due to an incomplete seismic subsidence of loess in this field. The seismic subsidence of toper loess layers is less than the below in the field test although it is opposite to in laboratory test due to closer distance between the below layers and explosion shots.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1652-1657
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1652
• Online since: November 2012
• Authors: Shun Hua Xu, Lan Min Wang, Jun Jie Sun
• Keywords: Dynamic Tri-Axis, Explosion Ground Motion, In Situ Experiment, Loess Seismic Subsidence

References

[1] B. Grabowska-olszewska, Engineering-Geological Problems of Loess in Poland. Engineering Geology, 25 (1988), 177-199.

DOI: 10.1016/0013-7952(88)90025-7

[2] Code for building construction in collapsible loess regions. China Architecture and Building Press, 2004. (In Chinese)

[3] Jaroslav Feda, Collapse of Loess Upon Wetting. Engineering Geology, 25 (1988), 263-269.

DOI: 10.1016/0013-7952(88)90031-2

[4] LIN Z.G. and WANG S.J., Collapsibility and Deformation Characteristics of Deep-seated Loess in China, Engineering Geology, 25 (1988), 271-282.

DOI: 10.1016/0013-7952(88)90032-4

[5] M.S. Nouaouria, M. Guenfoud, B. Lafifi, Engineering properties of loess in Algeria. Engineering Geology 99 (2008), 85–90.

DOI: 10.1016/j.enggeo.2008.01.013

[6] N. Phien-wej, T. Pientong and A.S. Balasubramaniam, Collapse and strength characteristics of loess in Thailand. Engineering Geology, 32 (1992), 59-72.

DOI: 10.1016/0013-7952(92)90018-t

[7] QI Ji-lin, ZHAO Wuguo, ZHANG Zhen-zhong, Analysis on characteristics and mechanism of the seismic damage in loess in Yongdeng ms5.8 earthquake region, GANSU province. Northwestern Seismological Journal, 1998, 20(1): 70－75. (In Chinese)

[8] Rajesh Kumari，Harbans Lal，MS Bola，VS Sethi，Damage evaluation of structures subjected to the effects of underground explosions. 7th International Symposium on Structural Failure and Plasticity，Melbourne，Australia，2000: 179-184.

DOI: 10.1016/b978-008043875-7/50163-5

[9] R.L. Hu, M.R. Yeung, C.F. Lee, S.J. Wang, Mechanical behavior and microstructural variation of loess under dynamic compaction. Engineering Geology , 59 (2001), 203-217.

DOI: 10.1016/s0013-7952(00)00074-0

[10] Wang L. Loess Dynamics. Beijing: Earthquake Press, 2003. (In Chinese)

[11] Wang G, Ming W. Water immerging, deformation and engineering technique of collapsible loess. In: Luo Y, Wang G, editors. Engineering and research on collapsible loess. Beijing: China Architecture Industry Press, 2001, 21–32. (In Chinese)

[12] Yuan Z.X., Wang L.M., Collapsibility and seismic settlement of loess. Engineering Geology 105 (2009), 119–123.

DOI: 10.1016/j.enggeo.2008.12.002

[13] Zhang Zhenzhong, Prediction of loess earthquake Disaster. Beijing: Earthquake Press, 1999. (In Chinese)