摘要
塑料排水板为竖向排水体的排水加固法在软土地基处理中应用非常广泛。在塑料排水板长期工作状态下,由于土体固结变形、滤膜堵塞和滤膜在土压力作用下嵌入排水板板芯导致纵向通水面积降低等因素的综合影响,排水板的纵向通水量会随着时间而变化,因此对排水板加固软基效果产生一定的影响。本文通过室内模型试验研究,分析了排水板在工作状态下排水板加固软基的工作性能,最后对比了有限元计算结果,发现排水板弯曲变形对排水板长期工作性能有比较大的影响。
Prefabricated vertical drains （PVDs） have been used successfully in many soft soil improvement projects. Buckling of PVD strips due to settlement of soil, clogging effect of the filters and reduction of drainage area due to soil pressure acting on the filter will reduce the discharge capacity of PVD strips. The modeling test is conducted to investigate the long-term performance of PVDs. With the results compared to the numerical study, it is found that the bending deformation of PVDs due to settlement of soil has great influence on long-term performance of PVDs.
出处
《电力勘测设计》
2013年第4期5-9,共5页
Electric Power Survey & Design
关键词
排水板
模型试验
通水量
数值分析
prefabricated vertical drains
model test
discharge capacity
numerical analysis.
