滩海软粘土在往复荷载作用下的软化特性研究
Study on Softness Feature of Soft Clay Undertaking Reciprocating Load in Beach and Shallow Sea
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- DOI:
- 作者:
- 冯守中1, 闫澍旺2, 朱平2
FENG Shou-zhong1, YAN Peng-wang2, ZHU Ping2
- 作者单位:
- 1 交通部三航局海南工程公司, 海南省海口市 570206;
2 天津大学, 天津市南开区 300072
- 关键词:
- 海滩环境;软地层;力学性能;沉降;估算;模型;试验
Beach environment;Soft formation;Mechanics performance;Settling;Estimate;Model;Testing
- 摘要:
- 我国沿海许多地区的表层土质为含水量高、孔隙比大的软粘土，在海浪的往复荷载作用下，由于土层被扰动，强度进一步降低，将使位于该土层上的构筑物发生很大附加沉降甚至失稳破坏。虽然国内外已开展了对软粘土软化问题的研究，但尚未获得较成熟的工程实用方法，本文提出一种较简便的估算分析方法，并对计算结果通过离心模型试验进行了验证，其结果对于工程设计人员是很有意义的。
The surface soil along many coasts of China is soft clay with high water content and big pore space ratio. The soil is in disturbance under action of reciprocating load of sea wave and loses its strength gradually. It is result a large additional settle or even instability will occur in structure on the soil. Al-though some researches on this sort of softness problem have been done the very successful and practical method was not found. So this paper presents a rather simple estimation analysis method. The esti-mated result has been checked by a centrifugal model test and shows it is instructive to engineering de-signers.1998,2(2): 4-6,25,2 收稿日期：1997-12-25参考文献：
1 Ishihara K. and Yamazaki A. . Analysis of wave-induced liq-uefaction in seabed deposits of sand, Soils and Foundations, 1984, Vol. 24, No. 3, 85一100
2 Lee K. L. and Focht ]. A..Liquefaction potential at Ekofisk Tank in North Sea J. Geoth. Eng. Div. ASCE, 1975, Vol. 101, No. GTl:l一18
3 Maeno Y. and Uchida, K..Centrifuge simulation of settle-ment of Armur Block, Proc. of Inter. Conf. on Geo.Eng. for Coastal Development, 1991, 597一602
4 Rahman M. S: and Jaeer W. Y..A simplified drained analysis for wave-induced liquefaction in ocean floor sands, Soils and Foundations. 1986, Vol. 26, No. 3: 57一68
5 Umehara Y. Zen, K. and Oguro, Y. Model test of a breakwater on wave-induced liquefaction. Pnx. of 14th Annual Meeting of JSSMFE, 1979, 1317一1320(in Japanese)