Geotechnical Issues of Geodata Base of Soil Ground of New Capital Astana

Zhussupbekov, Askar; Alibekova, Nurgul; Morev, Ivan; Iwasaki, Yoshinori; Mimura, Mamoru

doi:10.3850/978-981-07-0188-8_p169

Cited by 2 publications

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“…Secondly, the main distinguishing feature of this work from the previous studies [10,11,24,25,29,31] is the creation of a geotechnical map that was built for the driven piles. According to the geological structure of the foundations, the optimal variations in the pile length for each city zone were determined.…”

Section: Discussionmentioning

confidence: 99%

“…V-Lower floodplain valley-canals, quarries, pits-sands, and sedimentary clays a(Q II-IV ). Recent experience in the construction of pile foundations in Nur-Sultan and the results of their research show the presence of excessive strength in the design of foundations, not taking into account the unreasonable costs of material and labor resources, funds, previous construction experience in these areas and the work of surface structures [24,25]. Insufficient information about the soil, incorrect choice of the type of piles, their length and horizontal dimensions, and failure to use the maximum load-bearing capacity of the foundation to the required level leads to structure failures [26].…”

Section: Introductionmentioning

confidence: 99%

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Development of a Unified Geotechnical Database and Data Processing on the Example of Nur-Sultan City

et al. 2020

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Development of a geotechnical database for the young capital of Kazakhstan, Nur-Sultan city, became a paramount concern of both the scientific community and industry. The creation of the Kazakhstan model of the geotechnical database was based on a fixed dataset which included a city map with determined X, Y, and H coordinates and the user generated data obtained from the materials of engineering and geological surveys from more than 2000 boreholes. Based on the assessment of the built-up area of the city, six main engineering-geological elements (EGE) were identified. The territory of the city was regrouped into eight zones instead of the previous six based on the geological origin and stratigraphy interposition of the EGE. Engineering properties of the soils were considered for physical and mechanical characteristics, where the plasticity limits demonstrated an accurate correlation to the elasticity modulus E and distribution boundaries between the alluvial and eluvial types of the soil on the graph. So, the increased liquid and plastic limits are replicated by higher values of elasticity modulus E, and hence better strength characteristics of a particular soil layer and vice versa, while the moisture content and soil density did not show any obvious pattern and requires additional verification on the construction site. Finally, a geotechnical map was built for the driven piles and the optimal variations in the pile length for each zone were determined.

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