铁道标准设计2018，Vol.62Issue(2)：12-16,5.DOI:10.13238/j.issn.1004-2954.201705160004
高铁沿线地下水位动态变化引发的成层弱透水层固结研究
Study on Consolidation of Multi-layered Aquitard Induced by Dynamic Variation of Groundwater Level along High Speed Railway Line
摘要
Abstract
With Laplace transform and transfer matrix method,analytical solutions are derived for consolidation of multi-layered aquitard induced by dynamic variation of groundwater level along high speed railway line.The analytical solutions are then verified through comparisons with the numerical calculation results of ABAQUS.The consolidation performances of multi-layered aquitard along a high speed railway line are studied based on analytical solutions.The settlement,settlement rate and excessive pore water pressure of multi-layered aquitard are calculated,and the effects of compression modulus and permeability of aquitard on the consolidation performances are analyzed.The results show that as the groundwater level declines,the pore water pressure decreases,while settlement and settlement rate are increasing gradually.As the groundwater level remains stable,the settlement rate decreases gradually and the consolidation of multi-layered aquitard still lasts for a long time.The larger the soil compression modulus is,the smaller the total settlement and settlement rate are.The larger the soil permeability is,the larger the total settlement is and the sooner the consolidation of multi-layered aquitard ends.关键词
地下水位/动态变化/成层弱透水层/固结/Laplace变换/传递矩阵法Key words
Groundwater level/Dynamic variation/Multi-layered aquitard/Consolidation/Laplace transform/Transfer matrix method分类
建筑与水利引用本文复制引用
黄大中,李国和..高铁沿线地下水位动态变化引发的成层弱透水层固结研究[J].铁道标准设计,2018,62(2):12-16,5.基金项目
中国铁路总公司科技研究开发计划重点课题(2015G006-G) （2015G006-G）
天津市自然科学基金京津冀合作专项项目(16JCZDJC40200) （16JCZDJC40200）
