Physical and mechanical properties of core and filter membrane for plastic vertical drains
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摘要: 塑料排水板作为真空预压地基处理法中水分排出的竖向通道,其性能的优劣影响对地基处理效果起到至关重要的作用。对不同排水板的芯板及滤膜开展一系列的物理力学性能试验,得出整体式芯板横截面积稍微大于分离式芯板;防淤堵系列芯板的整体力学性能要优于常规系列芯板;且滤膜样本中编织布相对于无纺布而言厚度较薄、质量较轻,力学性能表现上也明显劣于无纺布滤膜;无纺布样本中,防淤堵无纺布较常规无纺布厚度较薄、质量较轻,但其力学性能表现要优于后者;防淤堵整体式排水板通水性能为最优。Abstract: The plastic vertical drain is a vertical channel of water discharge in foundation treatment by vacuum preloading. The effect of the performance on the foundation treatment is very important. A series of physical and mechanical tests are carried out for different plastic vertical drains. The transverse sectional area of the integral core plate is slightly larger than that of the separation core plate. The mechanical properties of the anti-clogging core plate is superior to those of the conventional core board. For the membrane samples, the thickness of woven cloth is thinner than that of the non-woven fabric, with lighter quality. The mechanical performance is also significantly inferior to that of the non-woven fabric. For the non-woven fabric samples, the thickness of the anti-clogging non-woven fabric is thinner than that of the conventional one, with lighter quality. The mechanical performance is superior to that of the conventional non-woven fabric. The anti-clogging integral drains show optimal performance.
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