Dynamic Characteristics of Soils in Yuan-Lin Liquefaction Area
Resource
Journal of the Chinese Institute of Engineers 25 (5): 555-565
Journal
Journal of the Chinese Institute of Engineers
Journal Volume
25
Journal Issue
5
Pages
555-565
Date Issued
2002
Date
2002
Author(s)
Abstract
Abstract The Chi?Chi Earthquake induced extensive soil liquefaction in many areas in central Taiwan, and caused substantial damage to buildings, roadways, bridges, and water front structures. Field investigation and explorations were performed in Yuan?Lin and its neighboring towns, Da?Chun and Sheh?Tou. Thin?walled tube ��undisturbed�� soil samples were taken during the subsurface explorations. Laboratory dynamic tests were conducted on these samples collected by National Taiwan University and the National Center for Research on Earthquake Engineering. The liquefaction test results provide the relation between cyclic shear stress ratio and number of stress cycles to initial liquefaction. The stress?strain relations during the stress?controlled and strain?controlled cyclic triaxial tests, and resonant column test results were obtained to study the characteristics of shear modulus and damping of these soils at various strain amplitudes. The results can be used in seismic ground response analysis in the Yuan?Lin area. The stiffness reduction versus pore pressure generation under cyclic loading was also studied. The results can be used for the evaluation of the soil?structure interaction and the design of foundations under earthquake loading.
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Type
journal article
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