| Issue |
MATEC Web Conf.
Volume 265, 2019
International Geotechnical Symposium “Geotechnical Construction of Civil Engineering & Transport Structures of the Asian-Pacific Region” (GCCETS 2018)
|
|
|---|---|---|
| Article Number | 05013 | |
| Number of page(s) | 11 | |
| Section | Foundations and Underground Structures | |
| DOI | https://doi.org/10.1051/matecconf/201926505013 | |
| Published online | 30 January 2019 | |
Evaluation of the quality of pile foundations by different methods
1
L.N.Gumilyov Eurasian National University, Kazakhstan
2
KGS LLP, Kazakhstan
* Corresponding author: astana-geostroi@mail.ru
At the present time, in Astana city is going on works by construction public transport system LRT (Light Railway Transport). LRT is an overhead road with two railway lines. The first stage of construction is including construction of overhead road (bridge) with 22.4 km length and 18 stations. The foundation of bridge is the bored piles with cross-section of 1.0-1.5 m and length of 8-35 m. A design bearing capacity of pile is 4500-8000 kN. Chinese drilling rigs Zoomlion was used for soil boring without casing. A polymer slurry is used to maintain the walls of boreholes in sand and gravel soils. In these conditions very important point is the integrity of concrete body of each bored piles. For checking the integrity was used two methods – the Low Strain Method and the Cross-Hole Sonic Logging. The aim of this paper is finding the advantages and disadvantages of each method which applying on testing site.
© The Authors, published by EDP Sciences, 2019
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