土工合成材料用作PVDs在软基排水固结中的应用

介绍了土工合成材料在软土地基排水加固工程中的应用，尤其是PVDs在液化地基处理和污染地基处置领域中尝试性的应用，根据单元井的固结理论，简要讨论了PVDs的井阻和涂抹作用，以及指标的测定，根据对工程实例的研究，进一步分析了PVDs的影响因素，结构可靠性设计的思想应用于饱和土的PVDs排水固结法是一个全新的概念，可靠性敏度分析的结果表明，PVDs软基固结仅对水平固结系数高敏感，基于这一概念讨论了简化的可靠性设计方法。

New Geosynthetics Used as PVDs Applied in Soft Soils Improved by the Consolidation Method

The geosynthetics used in certain fields of vertical drain improvement techniques for soft clay deposits are presented, in particular dealing with the innovations in PVDs applied to reducing the possibility of liquefaction potential and stabilizing hazardous waste. The well resistance and the smear effect of PVDs, as well as the determination of the parameters are summarized based on the consolidation theories of unit-well. On the basis of research for case history, the factors impacted on PVDs are further analyzed. It is a pilot methodology to use the principle of structure reliability for design of PVDs in saturate soil consolidation. The conclusion of the sensitivity analysis shows that the average degree of consolidation is highly sensitive to the uncertain variability of the coefficient of horizontal consolidation. A concise approach of reliability design for PVDs used in expediting soil consolidation is discussed.