摘要
一维地基固结理论从传统的太沙基一维固结理论到成层地基一维固结理论中。由于实际地基大多由性质不一的成状土组成,成层地基固结度计算一直为人们所关注。固结度有按沉降(压缩量)定义的地基总平均固结度和按作用的平均有效应力(或所消散的平均孔压)定义(简称按平均孔压定义)的地基总平均固结度。但对实际工程对它们的大小比较讨论甚少,对实际的选取应用没有理论上的支持。本文从一般均质地基的固结度定义入手,在相对比较理想的土体条件假设下,系统的比较了它们的大小区别,并在单面排水条件下结论Us>Up是一定成立的,并且根据以有的半理论解编制了相应的计算程序来说明本文的正确性。
Terzaghi gave a theory of soil consolidation based on the effective stress principle, which was derived on several ideal assumptions to get a simplified theory. To avoid the limitations involved in Terzaghi＇s theory, many efforts are being made by scholars to solve the problems impractical engineering situations. This paper presents a generalized theory onedimensional consolidation of saturated soft clay with relatively uniform soil and comparable analysis of different definitions of average degree of consolidation systematically. Study of the degrees of consolidation defined in terms of settlement Us and in terms of effective stress Up. On condition that PTIB and relatively uniform soil are considered the conclusion of Us〉 Up must be right. It can be tested by semi-analytical solution presented here.
出处
《科技通报》
2006年第6期813-816,共4页
Bulletin of Science and Technology
基金
国家自然科学基金资助项目(50578143)
关键词
平均固结度定义
沉降
有效应力
均质土体
单面排水
average degree of the consolidation
settlement
effective stress
uniform soil
PTIB
