Construction of the extension project of the Bangkok MRT Blue Line underground railway was recently started in 2011. The construction of approximately 5 km long underground tunnel and 4 deep excavations of underground station are considered to be the most important geotechnical works. The pressuremeter was selected as a high-quality in situ testing of the soil to evaluate design parameters for the project. In addition, other field and laboratory tests such as vane shear and CK0U triaxial tests were included in the investigation programme. This paper aims to present the ground conditions encountered along the MRT Blue Line extension project as well as the site investigation and interpretation techniques with particular focus on the pressuremeter tests. The results are also compared with the pressuremeter investigation from the previous Bangkok MRT project.
Key Words
geotechnical parameters; in situ testing; pressuremeter; mass rapid transit; Bangkok Clay
Address
Suched Likitlersuang — Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
Chanaton Surarak, Erwin Oh and Arumugam Balasubramaniam — School of Engineering, Griffith University, Gold Coast Campus, Queensland, Australia
Dariusz Wanatowski — Nottingham Centre for Geomechanics, The University of Nottingham, United Kingdom/Department of Civil Engineering, The University of Nottingham Ningbo, China
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