Determination of Vibro - Compaction Parameters by Making a Test Board in a Port Site in Morocco

IF 1.1 Q3 ENGINEERING, CIVIL
Mohamed Bziaz, L. Bahi, L. Ouadif, A. Bahi, Abdehak Sabihi
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Abstract

Abstract Vibro-compaction is a recent technique for treating soils in the mass, thus improving its mediocre geo mechanical properties. In addition, this treatment makes it possible to minimize the risk of liquefaction, it is closely linked to the grain size of the soil to be treated. The soil underlying the construction project of the port of Nador in Morocco requires treatment to improve its characteristics and in particular to minimize the risk of liquefaction, given that Morocco is in a collision zone, near the border between the two African-Eurasian plates that are seismically active (earthquake in the city of Al Hoceima in 2004 in Morocco). The purpose of this work is to test the different parameters of vibro-compaction (mesh, vibration frequency, height of passes, duration of compaction) necessary to obtain the objectives set for the work (relative density ≥ 77 %), through the carrying out of an embarkation test on the substitute sands of the main breakwater of this Port. The in situ control tests (CPT) of the main dam, which were carried out by the substitution sand, made it possible to confirm the results of the test bench. These results stipulate on the one hand that the vibro-compaction mesh of 4.00 m is the most optimal and on the other hand that the relative density is an important parameter of liquefaction control.
在摩洛哥港口场地制作振动压实试验板确定振动压实参数
摘要振动压实是一种新的处理土体的技术,从而改善了其平庸的土力学性能。此外,这种处理可以将液化风险降至最低,这与待处理土壤的粒度密切相关。摩洛哥纳多尔港建设项目的土壤需要进行处理,以改善其特性,特别是将液化风险降至最低,因为摩洛哥处于碰撞区,靠近地震活跃的两个非洲-欧亚板块之间的边界(2004年摩洛哥阿尔霍塞马市发生地震)。本工作的目的是通过对该港主防波堤的替代砂进行登船试验,测试振动压实的不同参数(网目、振动频率、通过高度、压实持续时间),以获得为工程设定的目标(相对密度≥77%),用替代砂进行的试验使确认试验台的结果成为可能。这些结果一方面表明4.00m的振动压实网是最理想的,另一方面表明相对密度是控制液化的一个重要参数。
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来源期刊
CiteScore
2.00
自引率
58.30%
发文量
69
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