唐-曹高速公路软土的微结构特征研究

›› 2012, Vol. 33 ›› Issue (S1): 37-43.

唐-曹高速公路软土的微结构特征研究

母焕胜

河北省交通规划设计院，石家庄 050011

收稿日期:2012-05-19 出版日期:2012-09-11 发布日期:2012-09-21
作者简介:母焕胜，男，1957年生，本科，教授级高工，主要从事岩土力学及地下工程方面研究工作

Study of microstructural characteristics of soft soil in Tang-Cao expressway

MU Huan-sheng

Hebei Provincial Communications Planning and Design Institute, Shijiazhuang 050011, China

Received:2012-05-19 Online:2012-09-11 Published:2012-09-21

摘要/Abstract

摘要： 对软土地基处理技术研究己成为改善投资环境、加快环渤海地区建设、科学合理利用土地资源的重要研究课题。软土地基处理方法的科学合理与否，关键是从软土本身的结构特征揭示出影响软土变形和强度的本质因素。以唐-曹（唐山市至曹妃甸）高速公路通过地区的沉积软土为研究对象，综合海积软土的基本物理力学性质和微结构特征建立软土微结构量化参数。通过室内综合实验和理论分析，对海积软土微结构与宏观力学性质关系进行系统地研究，对海积软土的结构强度与工程效应进行论证，提出以建立在分维分形理论基础上的孔隙结构因子作为衡量海积软土结构强度和破坏趋势的综合性参数,且可以在求解先期固结压力的同时定量地确定土的结构强度，值得同行借鉴。

关键词: 高速公路, 软土, 微结构特征, 孔隙结构因子

Abstract: Studying the foundation treatment techniques of soils soil has become more important to improve the investment environment, speeding up the Bohai sea region development, using land resources scientificlly and rationally. The key of the foundation treatment techniques, scientific or not, is revealling the nature of factors which affect the deformation and strength of the soft soil from the structure characteristics of the soft soil.The quantitative parameters of the soft soil micro-structure is established by integrating the marine deposits soft soil physico-mechanical properties and microstructural characteristics with the deposited soft soil of the Tang-Cao(Tanshan-Caofeidian) highway as the research object. It conducts a systematic analysis between the microstructure and macro-mechanical properties of the marine deposited soft soil by indoor experiment and theoretical analysis. It also carries out the analysis and proof about the structural strength and engineering effects of the marine deposited soft soil. A pore structure factor has provided as integrated parameter, which integrated parameters to measure the structure strength and failure trend based on the fractals evaluation theory. And solving the pre-consolidation pressure at the same time, the structural strength of the soil can be determined quantitatively. It is a successful example and is helpful to engineers.

Key words: expressway, soft soil, micro-structural characteristics, pore structure factor

中图分类号:

TU 452

母焕胜. 唐-曹高速公路软土的微结构特征研究[J]. , 2012, 33(S1): 37-43.

MU Huan-sheng. Study of microstructural characteristics of soft soil in Tang-Cao expressway[J]. , 2012, 33(S1): 37-43.

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