Evaluation of Liquefaction Potential of Silty Sands Based onCone Penetration Resistance

地震作用下饱和砂土和粉砂的液化 导致了许多土木工程结构的失败， 导致生命和财产损失的高成本。 鉴于 为此，岩土工程师研究了评估 土壤沉积物的液化潜力。 这些研究主要 与粉砂和粉砂相比， 后一种材料是已知的。 由于经常发现的可变性和缺乏可重复性， 标准的渗透测试结果，已经有越来越多的走向 其他类型的液化评价现场试验 潜力 最有前途的工具之一是锥形流量计。 一 液化评价的知识状态中的主要空白 一个潜在的地点是使用锥形比重计评估粉质 沙地 这项研究计划将调查使用的锥形流量计， 砂土和粉砂液化势的评价 使用实验室测试和校准室测试。 工作 将分为两个阶段，第一阶段处理 细粉本身对抗渗透性的影响。 第二个将 包括饱和粉砂。 高级首席研究员因其 对土壤液化的研究 初级校长 调查员正在开始他的职业生涯，并显示出他的才华和才能。 必须为这个项目做出巨大贡献。 他们正在共同 他们非常有资格进行拟议的研究，他们有 提供必要的机构设施。 这项研究计划很有可能做出重大贡献 现场测定粉砂的液化潜力。

Liquefaction of saturated sands and silty sands during seismic events has been responsible for many failures of civil engineering structures, resulting in high costs both in loss of life and property. In light of this, geotechnical engineers have investigated methods to evaluate the liquefaction potential of soil deposits. These studies have primarily focused on sands, as compared to silts and silty sands, although the latter materials are known to liquefy. Because of the variability and lack of repeatability often found in standard penetration test results, there has been a growing move toward other types of in situ tests for the evaluation of liquefaction potential. One of the most promising tools is the cone penetrometer. A major void in the state of knowledge for liquefaction evaluation of potential sites is the use of the cone penetrometer for assessing silty sand sites. This research program will investigate the use of a cone penetrometer in the evaluation of the liquefaction potential of sands and silty sands using both laboratory tests and calibration chamber tests. The work will be broken into two phases, with the first dealing with the issue of effects of fines, per se, on penetration resistance. The second will involve saturated silty sands. The senior principal investigator is internationally recognized for his research into the liquefaction of soils. The junior principal investigator is starting his career and displays the talent and aptitude necessary to contribute strongly to this project. Together they are highly qualified to undertake the research proposed, and they have available the necessary institutional facilities. This research program is very likely to make a significant contribution to determining in-situ the liquefaction potential of silty sands.