Field Test of Driven Pile Group under Lateral Loading

World Multidisciplinary Earth Sciences Symposium 2017

Gorska, Karolina^1 ; Rybak, Jaroslaw^1 ; Wyjadlowski, Marek^1

Wroclaw University of Science and Technology, Wybrzeze Wyspiaskiego 27, Wroclaw

50-370, Poland^1

关键词: Additional control;    Alignment methods;    Constant values;    Displacement sensor;    Geotechnical works;    Horizontal loads;    Lateral capacity;    Load combination;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/95/2/022044/pdf
DOI  :  10.1088/1755-1315/95/2/022044

来源: IOP

【 摘 要 】

All the geotechnical works need to be tested because the diversity of soil parameters is much higher than in other fields of construction. Horizontal load tests are necessary to determine the lateral capacity of driven piles subject to lateral load. Various load tests were carried out altogether on the test field in Kutno (Poland). While selecting the piles for load tests, different load combinations were taken into account. The piles with diverse length were chosen, on the basis of the previous tests of their length and integrity. The subsoil around the piles consisted of mineral soils: clays and medium compacted sands with the density index ID>0.50. The pile heads were free. The points of support of the "base" to which the dial gauges (displacement sensors) were fastened were located at the distance of 0.7 m from the side surface of the pile loaded laterally. In order to assure the independence of measurement, additional control (verifying) geodetic survey of the displacement of the piles subject to the load tests was carried out (by means of the alignment method). The trial load was imposed in stages by means of a hydraulic jack. The oil pressure in the actuator was corrected by means of a manual pump in order to ensure the constant value of the load in the on-going process of the displacement of the pile under test. On the basis of the obtained results it is possible to verify the numerical simulations of the behaviour of piles loaded by a lateral force.