MINIATURE CONE PENETRATION TESTS IN SOFT AND STIFF CLAYS
MINIATURE CONE PENETRATION TESTS IN SOFT AND STIFF CLAYS
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DOI：
10.1520/gtj11064j
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发表时间：
2000-12
影响因子：
1.6
通讯作者：
H. Titi;L. Mohammad;M. Tumay
中科院分区：
文献类型：
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作者：
H. Titi;L. Mohammad;M. Tumay
为满足公路工程设计和施工控制的需要，研制了一种电动连续侵入式微型静力触探试验系统。该系统通过展开不锈钢推杆连续推进2平方厘米的电动微型锥形流量计。圆锥贯入测试将圆柱形探头推进土壤样品中，并电子测量由于侵入而导致的尖端和套管阻力。这些阻力参数被用来分类渗透沉积物和估计强度和变形特性的土壤。现场和实验室测试程序进行超固结，正常固结，压实路易斯安那州粘土。现场测试程序包括使用2和15平方厘米的电动圆锥贯入度仪结合土壤采样进行的圆锥贯入度测试，而实验室测试包括所调查土壤的物理性质和强度特性。进行了锥贯入试验分析，以评估可重复性和可靠性，并确认电动微型摩擦锥（2平方厘米）输出符合15平方厘米锥的输出。试验数据将提供校准微型圆锥相对于常用圆锥流量计的方法。它将被用来建立微型圆锥贯入试验结果和在实验室中确定的土壤参数之间的相关性，并利用它们进行道路设计和公路养护的施工控制。
An electric continuous intrusion miniature cone penetration test system was recently developed for roadway design and construction control of embankments. The system continuously advances a 2 sq cm electric miniature cone penetrometer by uncoiling a stainless steel push rod. Cone penetration testing advances a cylindrical probe into a soil sample and electronically measures the tip and sleeve resistance due to the intrusion. These resistance parameters are used to classify penetrated sediments and to estimate strength and deformation characteristics of soils. Field and laboratory testing programs were conducted on overconsolidated, normally consolidated, and compacted Louisiana clays. The field testing program consisted of cone penetration tests using both 2 and 15 sq cm electric cone penetrometers in conjunction with soil sampling, while laboratory tests included physical properties and strength characteristics of the investigated soils. Analyses of cone penetration tests were conducted to assess the repeatability and reliability, as well as confirming that the electric miniature friction cone (2 sq cm) output complies with the output of the 15 sq cm cone. The test data will provide the means to calibrate the miniature cone with respect to the commonly used cone penetrometers. It will be used to establish correlations between the miniature cone penetration test results and soil parameters determined in the laboratory and utilize them for roadway design and construction control of highway embankments.