青海高速公路湿陷性黄土地基处理技术研究  

Study of the Treating Technology of Collapsibility Loess Subgrade in Qinghai Highway

作　　者：陈云[1] 周志军[2] 

机构地区：[1]杭州市城市规划设计研究院,浙江杭州310006 [2]长安大学,陕西西安710064

出　　处：《西部探矿工程》2009年第5期148-151,共4页West-China Exploration Engineering

摘　　要：对湿陷性黄土地区公路地基采用强夯、灰土换填、灰土挤密桩等三种方法进行处理,根据处理后地基土沉降量、压缩模量、湿陷系数及静力触探等试验结果,得出了不同处理方法的施工工艺、处理效果及适用条件。其中强夯法处理地基时,通过试验比较,得出了夯击功能、击数与有效处理深度的关系。The collapsibility loess ground is treated by use of the dynamic consolidation method, lime-soil compaction pile method, and the constructing technology, treating effectiveness, and applicability condition are presented according to the test results of the settlement, modulus of compressibility, collapsibility coefficient and static cone penetration. When the ground is disposed by use of dynamic consolidation, the relation between the tamping work, tamping pass and the treating depth is obtained according to the test results. When the ground is disposed by use of the impacted method, the relation between the rolling pass and the validity treating depth, influence depth is put forward.

关 键 词：道路工程 湿陷性黄土 强夯法 换填灰土法 灰土挤密桩法 夯击功能 碾压遍数 

分 类 号：U419.4[交通运输工程—道路与铁道工程]