Field investigation on the performance of different screw piles in sandy soilsCase study: Bandar Anzali Coast - Anzali Port

Installation of traditional piles in urban and coastal environments has many challenges, such as the need for heavy drilling equipment and machinery, the lack of access, enforcement problems in soft and problematic soils and environmental problems such as vibration and noise pollutions. Meanwhile, according to the development of different hydraulic and mechanical equipment, new model of piles have been introduced which can be considered as a useful alternative to traditional piles. This model of piles bring the advantage of minimum executive problems such as less vibration and noise pollution and high speed installation procedure at low accessible areas. In the present study, using different hydraulic and electronic equipment, the behavior of the two models of conventional screw piles and a new innovated pile model were studied in Bandar Anzali with an embedment depth of 3.20 m. Also, a tubular steel pile was tested as the basis for comparing the behavior of driven piles with screw piles with the same dimensions and embedment depth. Overall, five compressive static loading tests were carried out on the implemented piles. The results indicated that this model of piles have an acceptable loading capacity and can be introduced as a suitable substitute for traditional piles in urban and coastal constructions.