某浸水试验场地黄土自重湿陷特征的分析探讨  

Analysis and discussion on overburden collapsibility characteristics of loess in an immersion test site

作　　者：李康 

机构地区：[1]山西省勘察设计研究院,太原030013

出　　处：《工程勘察》2016年第4期34-38,共5页Geotechnical Investigation & Surveying

摘　　要：我国湿陷性黄土分布广泛,鉴于湿陷性黄土的特殊性和复杂性,黄土场地的湿陷类型及地基湿陷等级是湿陷性黄土地基处理前必须要准确查明的关键问题。按规范进行自重湿陷量的计算时,其修正系数因地区土质而异。本文通过分析某浸水试验场地不同深度的湿陷变形量的变化规律,揭示了地层湿陷系数随深度的变化规律以及地层岩性对浸水湿陷变形的影响,为该湿陷性场地评价提供指导性意见。The distribution of collapsible loess in China is widespread. In view of the characteristics and complexity of collapsible loess,the site collapse type and the collapse grade of loess foundation are the key issues that should be found out accurately before ground treatment. The correction coefficient varies from region to region when calculating the collapse under overburden pressure according to the codes. By analyzing an immersion test in this paper,the variation law of the coefficient of collapsibility with the depth and the influence of formation lithology on water immersion collapse deformation are revealed,which could provide the guidance suggestions for evaluating the collapsible site.

关 键 词：湿陷性黄土 自重湿陷变形量 自重湿陷系数 孔隙比 

分 类 号：TU444[建筑科学—岩土工程] TU192[建筑科学—土工工程]