CPT-based liquefaction analysis, Part 1: Determination of limit state function

Geotechnique - Tập 50 Số 5 - Trang 583-592 - 2000
C. Hsein Juang1, C. J. Chen2, W. H. Tang3, David V. Rosowsky1
1Clemson University USA
2URS Greiner Woodward Clyde Santa Ana, USA
3Hong Kong University of Science and Technology

Tóm tắt

This paper is the first of a set of two papers that address the issue of earthquake-induced liquefaction potential. In this paper, a CPT-based limit state function for assessing the cyclic liquefaction resistance of sandy soils is presented. The liquefaction resistance of a soil is generally expressed as cyclic resistance ratio (CRR), while the seismic load that causes liquefaction is expressed as cyclic stress ratio (CSR). By definition, CRR is equal to the maximum CSR that a soil can sustain without the occurrence of cyclic liquefaction. In the present study, a new method to establish a limit state function for evaluating cyclic liquefaction resistance is developed. This new method is based on an artificial neural network (ANN) modelling and analysis of 225 field liquefaction performance records. First, an ANN model is developed to predict the occurrence of liquefaction based on historic field performance records. Second, a search procedure is developed to locate data points on the limit state surface. Third, another ANN model is created to approximate the multi-variable limit state function. The established approximate function, an ANN model, can be used to determine the CRR of a soil using CPT data. The developed CPT-based limit state function forms the basis for the development of a risk-based method for assessing cyclic liquefaction potential.

Từ khóa


Tài liệu tham khảo

Agrawal G., 1995, Artificial neural networks for civil engineers: Fundamentals and applications

Ang A. H.-S., 1990, Probability concepts in engineering planning and design, Vol. II: Decision, risk, and reliability

Arulanandan K., 1986, Use of in situ tests in geotechnical engineering, 389

Bennett M. J., 1989, Bulletin of the Assoc. of Engineering Geologists, 26, 209

Bennett M. J., 1995, Geotechnical data from surface and subsurface samples outside of and within liquefaction-related ground failures caused by the October 17, 1989, Loma Prieta Earthquake, Santa Cruz and Monterey Counties, California, 10.3133/ofr95663

Bennett M. J., 1981, Subsurface investigation of liquefaction, Imperial Valley Earthquake, California, October 15, 1979, 10.3133/ofr81502

Bennett M. J., 1984, Geotechnical investigation of liquefaction sites, Imperial Valley, California, 10.3133/ofr84252

Bierschwale J. G., 1984, Analytical evaluation of liquefaction potential of sands subjected to the 1981 Westmorland Earthquake

10.1061/(ASCE)1090-0241(1997)123:5(453)

10.1061/(ASCE)0733-9399(1986)112:1(85)

Demuth H., 1999, Matlab Neural Network Toolbox, User's Guide

10.1061/(ASCE)0733-9410(1994)120:9(1467)

10.1061/(ASCE)0733-9410(1996)122:1(70)

Idriss I. M., 1999, Proceedings, TRB Workshop on New Approaches to liquefaction Analysis

10.1111/0885-9507.00143

10.1002/(SICI)1096-9853(200001)24:1<1::AID-NAG49>3.0.CO;2-I

10.1139/t99-011

10.1680/geot.2000.50.5.593

Kayen R. E., 1992, Proc. 4th Japan–US workshop on earthquake resistant design of lifeline facilities and countermeasures for soil liquefaction, 177

Kayen R. E., 1998, The Loma Prieta, California, Earthquake of October 17, 1989: Liquefaction, B61

10.1061/(ASCE)0733-9410(1988)114:4(389)

Lunne T., 1997, Cone penetration testing

MathWork, Inc, 1999, Matlab User's Manual, Version 5.3, ExcelLink User's Manual, Version 1.2

Olsen R. S., 1997, Proceedings of the NCEER workshop on evaluation of liquefaction resistance of soils, 225

Olsen R. S., 1988, Proceedings, Earthquake Engineering and Soil Dynamics II Conference, 374

10.1680/geot.1997.47.5.1019

Robertson P. K., 1994, Proc. 47th Canadian Geotech. Conf., Halifax, 277

10.1061/(ASCE)0733-9410(1985)111:3(384)

Robertson P. K., 1997, Proceedings of the NCEER workshop on evaluation of liquefaction resistance of soils, 41

Seed H. B., 1971, J. Soil Mech. Found. Div, ASCE, 97, 1249, 10.1061/JSFEAQ.0001662

10.1061/(ASCE)0733-9410(1985)111:12(1425)

10.1002/(SICI)1096-9853(199805)22:5<351::AID-NAG921>3.0.CO;2-8

10.1061/(ASCE)0733-9410(1995)121:12(856)

Tinsley J. C., 1998, The Loma Prieta, California, Earthquake of October 17, 1989 Liquefaction, B287

USGS, 1990, Effect of Loma Prieta Earthquake on the Marina District, San Francisco, CA

Wayne A. C., 1998, The Loma Prieta, California, Earthquake of October 17, 1989: Liquefaction, B181

Youd T. L., 1997, Proceedings of the NCEER Workshop on Evaluation of Liquefaction Resistance of Soils

Thông tin
Thông tin xuất bản

Geotechnique

Tập 50 Số 5

583-592

Thông tin tác giả