长江科学院院报2017，Vol.34Issue(2)：99-103,119,6.DOI:10.11988/ckyyb.20161075
塑料排水板处理地基固结特性研究
Consolidation Characteristics of Foundation Treated by Prefabricated Vertical Drains
摘要
Abstract
At present,traditional sand well consolidation theory is adopted to calculate the consolidation characteris-tics of foundation treated by prefabricated vertical drains.The equivalent diameter of prefabricated vertical drain can be obtained by formulas including Hansbo’s perimeter equivalence and the equivalent reduction 0.75 times the per-imeter in Code for Design ofSea Dike Project.But there is no unified understanding on it.In view of this,an analyt-ical solution for the consolidation of foundation treated by prefabricated vertical drains is presented based on equal strain assumption.The rationality of this solution is validated by using ADINA.Furthermore,finite element method is adopted to build a 2D model of foundation treated by prefabricated vertical drains.The coefficient of permeability of drain tends to infinity in the model.It is found that the consolidation characteristics in the 2D model by Long &Covo (1994)are close to those by finite element method,yet with some deviations.Finally,the formula for calcu-lating the equivalent diameter of 2D consolidation model of higher accuracy is given.关键词
塑料排水板/固结理论/2D固结模型/等应变假设/等效直径/井阻因子Key words
prefabricated vertical drains/consolidation theory/2D consolidation model/equal strain assumption/equivalent diameter/well resistance factor分类
建筑与水利引用本文复制引用
黄朝煊,方咏来,曾甑..塑料排水板处理地基固结特性研究[J].长江科学院院报,2017,34(2):99-103,119,6.基金项目
浙江省水利水电勘测设计院科标业项目（B1608，B1609）；水利部公益性行业科研专项 （）
