Geotechnical properties of soft clays along Yangon River – Characteristics of soft clays in Thilawa Port area

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2023-08-01 DOI:10.1016/j.sandf.2023.101331

Yoshimitsu Yamada , Takashi Tsuchida , Nyan Myint Kyaw , Tatsuru Aoyama , Toshiya Akasaki , Moe Myint Su Hlaing , Ryota Hashimoto

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引用次数: 0

Abstract

The Thilawa Port Development Project is the first large-scale development project to be carried out in the area of sedimented soft clays along the Yangon River in Myanmar. As there is little information about the soft clays sedimented along this river, the mechanical properties of the soft clays in the Thilawa Port area were summarized and compared with the properties of clays in other countries from the perspective of the geotechnical design. It was shown that the high-quality data obtained by the samples taken by a fixed piston sampler were essential to properly determining the design parameters of the soft clays in the Thilawa Project. The relationship between the strength and consolidation history of Thilawa clay was clarified from the results of unconfined compression tests and consolidation tests conducted on the high-quality samples. Furthermore, it was shown that the clay at shallow depths became overconsolidated due to desiccation stress and that its compressibility decreased. The relative characteristics of Thilawa clay were clarified by comparing the geotechnical parameters related to the strength and consolidation-compression properties of the Thilawa clay with those of representative clays of Eastern and Southeastern Asia.

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仰光河沿岸软粘土的岩土工程特性——Thilawa港口地区软粘土的特性

Thilawa港口开发项目是在缅甸仰光河沿岸沉积软粘土地区进行的第一个大型开发项目。由于关于沿该河沉积的软粘土的信息很少，因此从岩土工程设计的角度总结了Thilawa港口地区软粘土的力学特性，并与其他国家的粘土特性进行了比较。研究表明，通过固定活塞采样器采集的样品获得的高质量数据对于正确确定Thilawa项目中软粘土的设计参数至关重要。根据对高质量样品进行的无侧限抗压试验和固结试验的结果，阐明了Thilawa粘土的强度与固结历史之间的关系。此外，研究表明，浅层粘土由于干燥应力而变得过固结，其压缩性降低。通过比较Thilawa粘土与东亚和东南亚代表性粘土的强度和固结压缩特性相关的岩土参数，阐明了Thilawa黏土的相对特征。

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来源期刊

Soils and Foundations 工程技术-地球科学综合

CiteScore

6.40

自引率

8.10%

发文量

审稿时长

5 months

期刊介绍： Soils and Foundations is one of the leading journals in the field of soil mechanics and geotechnical engineering. It is the official journal of the Japanese Geotechnical Society (JGS)., The journal publishes a variety of original research paper, technical reports, technical notes, as well as the state-of-the-art reports upon invitation by the Editor, in the fields of soil and rock mechanics, geotechnical engineering, and environmental geotechnics. Since the publication of Volume 1, No.1 issue in June 1960, Soils and Foundations will celebrate the 60th anniversary in the year of 2020. Soils and Foundations welcomes theoretical as well as practical work associated with the aforementioned field(s). Case studies that describe the original and interdisciplinary work applicable to geotechnical engineering are particularly encouraged. Discussions to each of the published articles are also welcomed in order to provide an avenue in which opinions of peers may be fed back or exchanged. In providing latest expertise on a specific topic, one issue out of six per year on average was allocated to include selected papers from the International Symposia which were held in Japan as well as overseas.