土初始状态结构性定量化的研究与验证  

The initial state of the soil structural quantitative research and verification

作　　者：秦鹏成 邵生俊[1,2] 安中秋 褚峰[1,2] 郑晓锋[1,2] 

机构地区：[1]西安理工大学岩土工程研究所,陕西西安710048 [2]陕西省黄土力学与工程重点实验室,陕西西安710048

出　　处：《西安理工大学学报》2015年第4期448-453,共6页Journal of Xi'an University of Technology

基　　金：国家自然科学基金资助项目(41272320);陕西省黄土力学与工程重点实验室重点科研计划资助项目(2010JS084)

摘　　要：土的初始结构性综合反映了初始颗粒联结特征和初始颗粒排列特征。本文通过重塑饱和的方法来破坏原状土的初始结构性,用原状土的无侧限抗压强度与重塑饱和土的无侧限抗压强度的比值,定义一个反映土初始结构性的参数m_(is),分析了该参数与黄土基本物性指标、力学特性指标的关系。结果表明:粒度、密度、湿度是影响初始结构性的主要因素,同时,粒度、密度、湿度、初始结构性具有相关性;该参数具有很好的实用性。Soil initial structure can reflect the initial particle coupling behaviors and the initial particle arrangement features comprehensively.In this paper,the method of remolding saturation is used to destroy the initial soil structure behaviors,the specific value between the undisturbed soil unconfined compressive strength and remolded saturation soil unconfined compressive strength is used to define a parameter misto reflect the soil initial structure behaviors.This paper analyzes the relations between this parameter and the loess basic physical property indexes and mechanical property indexes.The results indicate that soil particle sizes,density and humidity are the main factors affecting soil initial structures,at the same time,soil partical sizes,density,humidity and initial structure are of correlation,and the parameters are of better practicability.

关 键 词：重塑饱和土 初始结构性 基本物性指标 力学特性指标 

分 类 号：TU43[建筑科学—岩土工程]