广东水利水电Issue(8)：37-41,5.
某路基土非饱和固结试验及研究
Unsaturated Consolidation Tests and Consistency Analysis of Model for a Subgrade Soil
钟文 1曾宇乐2
作者信息
- 1. 长沙桐木建设股份有限公司，湖南长沙 410205
- 2. 中铁十二局集团第七工程有限公司，湖南长沙 410004
- 折叠
摘要
Abstract
Research on strength characteristics of subgrade soils under unsaturated conditions has great significance for the design and construction of subgrade. In order to study the volume change behavior and strength characteristics of an unsaturated subgrade soil under different suction stages, a suction controlled unsaturated compression consolidation test is designed for the unsaturated performance of a subgrade soil. Experimental results show that the subgrade soil has a small swelling deformation. The volume change characteristics are obtained by a suction controlled method. As soil suction increases the void ratio decreases. According to the unsaturated compression consolidation tests results, the yield stress of the subgrade soil with different suctions were obtained. As the suction of the soil increases from 0 to 110 MPa, the yield stress increases from 200kPa to 1. 05MPa. What’s more, the tests results of the yield stress with different suctions are verified by classical model. The calculation results show that the compression consolidation test results can well described by the BBM model proposed by Alonso et al. (1990).关键词
路基土/压缩固结/固结试验/BBM模型Key words
Subgrade soil/compression consolidation/consolidation test/BBM model分类
建筑与水利引用本文复制引用
钟文,曾宇乐..某路基土非饱和固结试验及研究[J].广东水利水电,2016,(8):37-41,5.
