摘要
通过模拟试验研究了加筋膨胀土挡墙的蠕变特性,考虑了含水量对膨胀土的特殊作用.通过对试验结果进行分析后认为加筋膨胀土挡墙在含水量和温度升高时其蠕变变形会变大;膨胀土的湿胀干缩特性使加筋土中筋材并非一直处于受拉状态,可以减缓筋材的蠕变性质;在较低的极限荷载比例下,膨胀土体中含水量的变化对蠕变起主要作用,在较高的极限荷载比例下,加筋膨胀土的恒载对蠕变起主要作用.
Characteristics of reinforced expansive soils retaining wall creep are studied by simulation experiments, considering the influences of water content on the engineering characteristics of expansive soils. The test results suggest that the creep value in deformation becomes larger when the water content and temperature increase. They also suggest that the characteristics of expansive soils make geosynthetics creep weaken because geosynthetics in the expansive soil is not always at a pull. We can come to the conclusion from the tests that the change of water content plays a large role in reinforced expansive soils retaining wall creep under a low proportion of limited load, and even load does the same under a high proportion of limited load.
出处
《中南林学院学报》
CSCD
北大核心
2006年第2期64-67,共4页
Journal of Central South Forestry University
基金
湖南省交通厅建设科技项目"加筋土挡土墙在市政工程中的应用研究"(项目编号:2002-576-33)
关键词
土木建筑
加筋土
膨胀土
挡墙
蠕变
模拟试验
civil construction
reinforced soil
expansive soil
retaining structure
creep deformation
simulation experiment
