CPT-induced change of lateral earth pressure in modeling test
CPT-induced change of lateral earth pressure in modeling test
复制标题
模型试验中CPT引起的侧向土压力变化
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
T. Abdoun
中科院分区：
文献类型：
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作者：
Yu;I. Sasanakul;T. Abdoun
本研究的主要目的是系统地研究在不同距离的刚性容器壁的静力锥贯入试验（CPT）引起的侧土压力。在干渥太华砂中，使用直径为4 mm和12 mm的两个微型离心机进行了一系列离心CPT。CPT的位置从2到42倍的锥体直径。采用触觉式土压力传感器测量土压力的变化。研究结果表明，土压力的变化主要与土的初始相对密度、距试验点的距离和锥形土压力计的直径有关。在2-4倍CPT直径的距离处，侧压力的变化可以高达150-200 kPa。初始土相对密度对土压力变化的影响在4 mm CPT比12 mm CPT大。CP完成后，观察到一些残余侧压力。
The main objective of this study is to investigate systematically the lateral earth pressure induced by the cone penetration test (CPT) conducted at various distances from the rigid container wall. A series of centrifuge CPTs were performed in dry Ottawa sand using two miniature penetrometers with diameters of 4 and 12 mm. The CPT locations varied from 2 to 42 times the cone diameter. The change of lateral earth pressure was measured using tactile pressure sensors. Results from this study have shown that the lateral earth pressure change was mainly associated with the initial relative density of soil, the distance away from the testing location and the diameter of the cone penetrometer. The change of lateral pressure can be as large as 150–200 kPa at a distance of 2–4 times the diameter of the CPT. The effect of initial soil relative density on the change of lateral earth pressure was greater when using the 4 mm CPT than the 12 mm CPT. Some residual lateral pressure was observed after completion of the CP...