摘要
考虑砂井地基的井阻和涂抹区效应 ,建立了轴对称砂井和平面砂墙之间渗透系数以及几何尺寸的关系式 ,使砂井地基等效成平面砂墙处理。采用修正剑桥模型的二维平面应变Biot(比奥特 )固结有限元对一高速公路塑料排水板路基的沉降预测 。
The relationship of coefficients of permeability and geometry(drain spacing)between axisymmetric vertical drains and plain vertical drains is established,considering both well resistance and smear zone effects.Thus matching the two problems can be achieved by adjusting the geometry and the permeability of soil.The settlement of one PVD embankment of express road is predicted with finite element method of Biot theory,adopting modified Cambridge model(MCM).The predicted results show close to the measurements.
出处
《岩土工程技术》
2001年第1期23-26,共4页
Geotechnical Engineering Technique
关键词
砂井
塑料排水板
修正剑桥模型
比奥特
有限元
vertical drains
PVD
modified Cambridge model
Biot
finite element method
