Implementing a Static Cone Penetration Test in Infrastructure Works
Keywords:Geotechnical investigation, infrastructure planning, pump room, retaining structure, sheet piles, site investigation
In modern era, a construction of infrastructure projects necessitates a geotechnical investigation, which usually involves the execution of boreholes and laboratory testing on their samples as well as in-situ testing. A useful test, important for both educational and practical reasons, is the Cone Penetration Test (CPT), used to estimate the strength and compressibility of loose-to-medium dense coarse grained and soft to stiff fine-grained geomaterials, the excavation of which requires special attention. In this paper, a theoretical review on geotechnical surveys, in-situ testing of static cone penetrometer, statistical analysis of results, geotechnical correlations for the evaluation of results along with a dimensioning of the retaining wall with pile boards, is presented. The paper aims at highlighting the use of CPT for selecting the proper type of the temporary retaining structure, necessary to support excavations in loose-soft soils. The case study includes a pump room construction along with its aqueduct, close to Aliakmonas River in Greece. From this point of view, it may offer a rather powerful research design basis than purely experimental methods.
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