考虑温度效应的单井固结解析解

摘要

Considering the impact of smearing effect on foundation consolidation,the influence of temperature on coefficient of permeability is studied based on the existing theory of shaft consolidation.The relationship between the coefficient of permeability and temperature is given and the consolidation solution of single-side drainage of shaft foundation under the influence of temperature effect is obtained.There is an example of the analysis aiming at the numerical parameters of the Ningbo soft clay.The results show that the temperature has a significant effect on the consolidation behavior of the shaft foundation.At the same time,the higher the temperature is,the greater the consolidation degree of the foundation.Under the same temperature difference,the effect on soil consolidation will decrease with the increasing temperature.Under the same temperature condition,the smaller the ratio of borehole is,the faster the soil consolidation will be.%在现有竖井固结理论的基础上,考虑涂抹效应对地基固结的影响,研究了温度对渗透系数的影响并给出了渗透系数与温度的关系式,得到温度效应影响下竖井地基单面排水的固结解析解,并针对宁波软黏土选取参数进行算例分析.结果表明:温度对竖井地基固结性状有显著影响,同一时刻,温度越高地基的固结度越大;相同温差条件下,温度作用对土体固结的影响会随着温度的升高而逐渐减弱;在温度相同的条件下,井径比越小,土体固结越快;在温度条件相同的情况下,涂抹效应会导致土体固结速度减小.