童磊，杨学林，曹国强

（浙江省建筑设计研究院，杭州 310006）

 

［摘要］假定土体为饱和多孔黏弹性介质，采用Burgers四元件流变模型来描述，结合建立在Terzaghi-endulic固结理论基础上的固结-变耦合模型，采用复变函数解法，利用复变量将原平面上的研究域保角映射到像平面上的圆环域内，在像平面上求解以超静孔隙水压力为变量的控制方程，进而得到原平面域上软土盾构隧道的超静孔隙水压力的解析表达式。并在此基础上，研究了衬砌排水边界条件下盾构隧道的孔隙水压力问题以及土体特性对孔隙水压力的影响。

［关键词］软土；黏弹性;模型；四元件体;超静孔隙水压力;解析解

中图分类号：TU-42， TU 433文献标识码：A文章编号：1002-48X(2012)08-119-5

 

Tong Lei, Yang Xuelin, Cao Guoqiang

(Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China)

 

Abstract: Based on Burges viscoelastic constitutive model and Terzaghi-endulic consolidation theory, the governing equation about excess pore water pressure is established with drainage and no-rainage boundary. The excess pore water pressure is proposed as well as the volume strain can be determined at any time, of any position in the considered region. Then an analytical solution is proposed for the excess pore water pressure of tunnel in viscoelastic saturated soil.

Keywords: soft soil; viscoelasticity;Burges models;excess pore water pressure;analytical solution

作者简介：童磊，男，博士，主要从事软土地基与地下工程的研究，Email: 75711489@qq.com。

 

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