SEISMIC/POST-SEISMIC RESPONSE OF A NATURAL SOIL IN DELAYED SETTLEMENT
This paper is a natural extension of the former paper (Asaoka and Noda, 2007), published by the same authors in the international workshop on Constitutive Modelling held in Hong Kong. The behavior of a naturally deposited soil in a delayed consolidation phase during/after and earthquake is presented as a soil-water coupled calculation example. Emphasis is laid throughout on the importance of an analytic technique that copes consistently with all soils, clay or sand, in all states, consolidated or liquefied/compacted, and is sufficiently all-round to cover both static and dynamic problems. The soil in the example consists of an 8m top-layer of sand and a 13m under-layer of alluvial clay, and has undergone more than 20 years of continuous consolidation settlement since being loaded with a highway embankment. Settlement loss exceeds 3m, and no end to the process is yet in sight. After showing that delayed compression of this kind is due to a progressive breakdown in the clay skeleton structure, this paper makes clear what will happen at this site if the top-layer of sand is liquefied by being struck by an earthquake and sustained consolidation/shear deformation then continues in the clay under-layer for several tens of years.
Sand Clay Earthquake Liquefaction Liquefaction-Induced Settlement Soil-Water Coupled Analysis
AKIRA ASAOKA TOSHIHIRO NODA
Department of Civil Engineering, Nagoya University, Furo, Chikusa, Nagoya, 464-8603, Japan
国际会议
第三届中日岩土工程研讨会(Proceedings of the 3rd Sino-Japan Geotechnical Symposium)
重庆
英文
73-86
2007-11-05（万方平台首次上网日期，不代表论文的发表时间）