Proceedings-DFI/EFFC 11th International Conference on Piling and Deep Foundations, 2014, Stockholm, Sweden, (DFI)
Piling Practice in Sedimentary Granular Soils of Santa Cruz, Bolivia
Mario Terceros H., Incotec, Bolivia; Bengt H. Fellenius, Bengt H. Fellenius Consultants, Canada
The city of Santa Cruz, Bolivia, is historically dominated by houses and three to five storey buildings. The geology in and around the city is such that even very light buildings need to be supported on piles. The recent increase of the Bolivian economy, notably that of Santa Cruz, has created a demand for new residential as well as office and industrial buildings, which mostly consist of multi-storey or high-rise buildings with significantly larger foundation loads. Foundation piles have become larger and longer, and the load on individual piles is increased. The development has resulted in an increase in the demand for more sophisticated design and construction methods and stricter approach to verifying the quality of the construction processes and results. This paper describes to geology of the Santa Cruz region and how the geotechnical conditions are considered in the design and construction of piled foundations. The improvement of past construction and design techniques, based mostly on bored piles constructed with bentonite slurry, is being replaced with new methods of constructing bored piles, e.g. the Full Displacement Pile (FDP) and incorporation of techniques such as enlarging the pile toe, e.g., with the Expander Body. This paper presents the results of several full-scale tests and discusses the incorporation of the test results in design and construction.
|article #1914; publication #100 (IC-2014)|