吹填夹砂黏土的固结特性及孔隙结构研究  

RESEARCH ON CONSOLIDATION CHARACTERISTICS AND PORE VOLUME DISTRIBUTIONS OF SAND-CLAY MIXING DREDGER FILLED SOILS

作　　者：李媛媛[1] 刘将[1] 陈鹏[1] LI Yuanyuan;LIU Jiang;CHEN Peng(Qingdao University of Technology,Linyi 273400,Chin)

机构地区：[1]青岛理工大学

出　　处：《工业建筑》2018年第7期95-100,共6页Industrial Construction

基　　金：国家自然科学基金项目(51409154)

摘　　要：吹填造陆工程的地基主要由吹填土组成,由于其强度较低,需经地基处理后才能满足施工要求。吹填土固结特性以及孔隙结构的不明确导致吹填地基处理方式的不确定性和施工盲目性,进而影响工期进度,极易造成工程安全隐患。为研究吹填造陆形成的夹砂黏土的固结特性和孔隙结构变化规律,以某滨海特殊吹填土工程为背景,通过常规固结试验,评价含砂量对吹填夹砂黏土的孔隙比和渗透系数的变化影响,采用压汞试验,明确其孔隙结构特征。The foundation of land reclamation project is mainly composed of dredger fill. Due to its low soil strength,the untreated dredger hydraulic fill soils cannot meet the construction requirements. Besides,the uncertainty of consolidation and pore volume distribution characteristics of dredger fill may influence the construction period and construction safety. In order to study the consolidation characteristics and pore volume distributions of sand-clay mixing dredger filled soils,based on a special coastal reclamation project,the conventional consolidation test was conducted to evaluate the effect of sand content on the void ratio and the permeability coefficient of sand-clay mixing dredger filled soils,and the mercury injection test was used to determine its pore structure characteristics.

关 键 词：含砂黏土 含砂量 最大干密度 最优含水量 液限 

分 类 号：TU442[建筑科学—岩土工程]