Comparison of the pile testing results on Expo-2017 (Kazakhstan)

The article presents loading tests of large diameter and deep boring piles on the construction site in new capital city of the Republic of Kazakhstan. Finally, some recommendations for testing methods suitable for problematical ground conditions of Kazakhstan are introduced. Traditionally, pile load tests in Kazakhstan are carried out using static loading test methods. Static pile loading test is the most reliable method to obtain the load-settlement relation of piles. Results of static pile tests using the static compression loading test (by ASTM – SCLT), static loading test (by GOST – SLT) and bidirection static loading test (by ASTM – BDSLT or O-cell) methods are presented in this paper. Experienced bored piles with length of 31.5 m, diameter 1000 mm. Bi-directional static loading test and Static compression loading test carried out in accordance to ASTM D1143-07 and Static loading test carried out in accordance to GOST 5686-94, (1994). Hereafter the results of underground testing by the piles with the methods of vertical static testing BDSLT are presented, which had been made on Expo 2017 projects, buildings of Pavilion in Astana, Kazakhstan