滨海氯盐环境下灰土地基的变形和强度研究  

DEFORMATION AND STRENGTH OF LIME SOIL FOUNDATION UNDER COAST CHLORINE SALT ENVIRONMENT

作　　者：张建新[1,2] 蒋坪临 李岩[2] 

机构地区：[1]天津城建大学土木工程学院,天津300384 [2]天津市软土特性与工程环境重点实验室,天津300384

出　　处：《建筑技术》2016年第6期495-498,共4页Architecture Technology

基　　金：天津市科委自然科学基金重点项目(13JCZDJC35500);国家科技支撑计划课题(2014BAL03B03)

摘　　要：滨海地区广泛分布有含盐量较高的盐渍土,地下水位变化时,土中盐、水发生相应耦合变化,使地基产生盐胀、溶陷或对桩身腐蚀等工程问题,浅部盐渍土多采用换填或桩土复合地基等方法进行处理。选取天津滨海盐渍土为研究对象,采用灰土置换法处理地基,基于改装的实验仪器,研究了氯盐环境下不同侵蚀时间、侵蚀液浓度及上部荷载对加固灰土性状的影响,及灰土变形和强度的变化规律。研究结果进一步加深对滨海盐渍土的工程特性认识。The salinized soft soil of the high salt content has widely distributed in coastal area. Underground water level changes, resulting in inshore saline soil salinity of the corresponding change, which can produce many engineering problems, such as melt sinking, salt-heaving and corrosion of pile body. The method of replacement or pile composite foundation often adopted in shallow saline soil foundation treatment. This article selects the Tianjin coast chlorine saline soil as the research object, using lime soil replacement method for ground treatment, based on the modified experimental apparatus, to study the influence of different erosion time, different erosion liquid concentration and different upper loads to lime soil reinforcement, getting the changing rule of the lime soil deformation and intensity with erosion time, erosion solution concentration and the upper load. The results of the study can further deepen the understanding of inshore saline soil.

关 键 词：滨海盐渍土 灰土地基 侵蚀 变形 强度 

分 类 号：TU448[建筑科学—岩土工程]