Abstract
Pile foundations are used to transmit both vertical and horizontal loads. Many of offshore and coastal structures are founded on piles and these piles are subjected to significant amounts of lateral loads due to wind, wave and currents. Piles in shallow water regions are subjected to scour and there can be loss of soil support around these pile foundations. Bending moments and deflections are increased due to scour. In this investigation, it has been brought out that the lateral capacity of foundation is reduced due to scour. Tests on model piles of PVC and Aluminum embedded in soft marine clay bed formed at different consistency indices and load eccentricity ratios were conducted with and without scour. These pile materials are chosen such that there is a good variation in the rigidity of piles. From the model tests, it is noticed that scour results in the reduction in lateral capacity and increase in bending moments. In the second set of tests, cyclic loading is applied on PVC and Aluminum piles for a time period of 12 seconds. This time period represents the time period of storm wave in across the Indian seas. Considerable increase in deflection occurred due to scour in cyclic load tests for different consistency conditions of soil.
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References
Broms, B. B. (1964). “Lateral resistance of piles in cohesive soils.” J. Soil Mech. Found. Div., ASCE, Vol. 90, No. SM2, pp. 27–63.
Hansen, B. J. (1961). The ultimate resistance of rigid piles against transversal forces, Geotechnisk Institute, Bull No. 12, Copenhagen, Denmark.
Matlock, H. and Reese, L. C. (1960). “Generalized solution for laterally loaded piles.” J. Soil mechanics and Foundation Division, ASCE, Vol. 86, No. 5, pp. 63–91.
Narasimha Rao, S. and Mallikarjuna Rao, K. (1995). “Behavior of rigid piles in clay under lateral loading.” Indian Geotechnical Journal, Vol. 25, No. 3, pp. 287–313.
Poulos, H. G. and Davis, E. H. (1980). Pile foundation analysis and design, John Wiley & Sons, New York.
Prasad, Y. V. S. N. and Narasimha Rao, S. (1994). “Experimental studies on foundations of compliant structures-II under cyclic loading.” Ocean engineering, Vol. 21, No. 1, pp. 15–27.
Ram Babu, M., Sundar, V., and Narasimha Rao, S. (2003). “Measurement of scour in cohesive soils around a vertical pile-simplified instrumentation and regression analysis.” IEEE Journal of Ocean Engineering, Vol. 28, No. 1, pp. 106–117.
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Nanda Kishore, Y., Narasimha Rao, S. & Mani, J.S. The behavior of laterally loaded piles subjected to scour in marine environment. KSCE J Civ Eng 13, 403–408 (2009). https://doi.org/10.1007/s12205-009-0403-2
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DOI: https://doi.org/10.1007/s12205-009-0403-2