International Exposition will take place in 2017 in Astana, Kazakhstan as an Expo 2017 on Future Energy. Astana will have Center of the Arts, Energy Hall and even a city with an indoor shopping and entertainment pavilions. EXPO complex occupies 173.4 hectares. The leading construction companies will build the "city of the future". Nowadays, foundation of Expo 2017 Project is constructing by modern geotechnologies in Astana, Kazakhstan. For instance, 1000 mm diameter bored pile was tested by O-Cell loading Test from 14th April to 15th April, 2014. Length of pile is 31.50 m. Working load is 14500 kN and planning test load of the pile is 29000 kN. The hydraulic jack assembly comprising of three 5000 kN capacity bi-directional hydraulic jacks, was installed at 16.80 m below the cut off level. There were pair of tell-tale rod installed at the top and the bottom of the hydraulic cell assembly. Ten levels of vibrating wire-type strain gauges comprising four units at each level were installed in the test pile to measure strain at nominated locations. Adjustment for additional elastic compression is calculated as PL/EA where P is the applied load, L is the length, E is the elastic modulus and A is the cross-sectional area. The results of O-cell load test show that in the equivalent pile load-head settlement curve test pile would have a rigid pile settlement is 4.2 mm at 29000 kN. And also the test pile would have an elastic settlement of 9.66 mm at 29000 kN.

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The Continuous Flight Auger (CFA) technology has evolved especially in recent decades. Using of CFA technology has expanded all over the world. The article deals with geotechnical design of pile foundations, especially by static load tests and by calculation using numerical models. Results of static load tests which were performed in Kazakhstan and in Slovakia are analysed and compared with numerical modelling. The technology of CFA has been used due to the advantages of this technology in comparison with driven and bored piles in local geotechnical conditions. Software Plaxis 2011 was used for CFA piles analyses by FEM. Advanced constitutive hardening soil model was used for soil layers. Comparison of load-settlement curves, ratio of pile base and pile shaft resistance and distribution of unit shaft friction are presented in the paper. The best geoengineering solution in this case is the use of new pile technology like CFA (continuous flight auger), FDP (full displacement piles), DDS (drilling displacement system), that lead to increased bearing capacity.

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The information about the engineering-geological conditions in the central part of St. Petersburg which are characterized by deep thickness of weak water saturated soil is given. Three buildings with large underground space constructed in St. Petersburg are considered as examples. The depth of each space exceeds 12 m and required the usage of modern and nonstandard construction and technological methods for protection of the ditch walls. The wall protection was done by sheet piles, by diaphragm wall method, and jet grouting method. The soil excavation was carried out by traditional method or top–down method. The basic constructive schemes and technological methods of ditch excavation, test results of deformation of the protection walls during excavation of the ditch and the settlements of the neighboring buildings are given.

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It seems important to develop a numerical method for analyzing complex interactive action of soils and structures. The finite element used in this study is a pseudo-equilibrium model by one-point integration of a 4-noded iso-parametric element. The rotating failure of a retaining structure with excavation is analyzed. A layered approach based on 8-noded iso-parametric element to reinforced concrete structures is also developed. A material model for a concrete is used similarly by applying Mohr-Coulomb failure criterion and strain softening behavior associated with shear band localization. Then a elasto-plastic strain softening plastic model combined with endochronic theory is developed and applied to a earthquake response analysis of embankment dam.

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The paper presents an evaluation of geotechnical state on the project construction site and an evaluation of deep excavation impact on the current site development. It also provides an optimal design for the deep excavation, an impact analysis of horizontal shifts in the poling, an assessment of bending moments in the poling and the stresses in the sprung design. The numerical modeling was carried out for developing variants of the deep excavation as well as a preliminary assessment of the impact that the project underground construction produces on the surrounding buildings and constructions. Some recommendations on choosing a reliable variant of the undergrounds arrangement and the engineering operational technology are suggested. The paper offers the results of geotechnical monitoring of the building deformations nearby and in the shoring of deep excavation during the underground construction.

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This paper includes the short summary about dynamic and static tests by driven piles (cross-section 30×30 cm and length of 12 m). The definitions methodologies of the pile bearing capacity by aforementioned methods were also given. As an example for those methods, paper describes the results of the dynamic, static and the new in Astana PDA (Pile Dynamic Analyzer) tests of soils by piles performed in the construction site of the “New Railway Station” (Fig. 1). The possible depth of penetration and piles bearing capacity were determined according to the results of tests, as well as the recommendations for the device of working piles of construction project were issued.

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