The Response of a Driven Pile in Overconsolidated Clay at "Ciudad Universitaria", Bogotá-Colombia: Work in Progress.

Authors

Morales Salamanca, Kevin Air

Hurtado Gómez, Juan Diego

Gómez Castillo, Jhon Sebastian

Bernal Ramos, Leydy Tatiana

Pineda Jaimes, Jorge Arturo

Colmenares Montañez, Julio Esteban

Abstract

The use of deep foundations in the construction of buildings and infrastructure is a key issue in Bogota, Colombia; where there is a deep deposit of soft lacustrine soil lightly overconsolidated near the ground surface. However, the increase in pore pressure in the clayey soil that occurs during pile driving and the uncertainties in shaft strength related to the installation process, are not fully understood. The objective of this paper is to better understand these processes to reduce uncertainty when working with deep foundations. Research on this problem is still ongoing at the campus of the National University of Colombia in Bogota. Therefore, this paper only presents partial results and a route for future research. To evaluate what happens when driving piles in this type of soil, it is necessary to experimentally measure important parameters with field tests (CPTU, SPT) and a laboratory testing program. Then, from these data, a numerical model must be developed to estimate the load-settlement curve of the soil and its ultimate bearing capacity. Finally, to contrast the model predictions with actual conditions, a dynamic field load test and monitoring of soil circumstances during pile driving must be performed, using piezometers and inclinometers as part of the geotechnical instrumentation.