防灾减灾工程学报2012，Vol.32Issue(5)：600-605,6.
复合填料一维冻胀量数值模拟分析
Numerical Study on One-dimensional Frost Heave Amount of Composite Backfill
摘要
Abstract
A composite backfill is a kind of light backfill formed by mixing waste foundry sand, flyash, expanded polystyrene (EPS) beads, cement and water in designated proportions. Inclusion of EPS beads can reduce or eliminate frost heave and thaw settlement, and thus can be used as backfill of road base in seasonal frost areas. A one-dimensional frost heave model was established based on the current moisture-heat coupling model. The model is able to take account of the elastoplastic behavior of EPS bead and its effect on frost heave taken place within the mass of composite backfill. The results given by the model are in a good agreement with the test results achieved from a previous companion study, which validates the use of this model in the prediction of frost heave of engineering works in seasonal frost areas.关键词
复合填料/聚苯乙烯(EPS)颗粒/水热耦合/冻胀量/数值模拟模型/实验验证Key words
composite backfill/ expanded polystyrene beads/ moisture-heat coupling/ frost heave amount/ humerical simulation model/ experimental verification分类
建筑与水利引用本文复制引用
祁生旺,邓安..复合填料一维冻胀量数值模拟分析[J].防灾减灾工程学报,2012,32(5):600-605,6.基金项目
江苏省自然科学基金项目(BK2009027)资助 （BK2009027）
