A STUDY ON FAILURE OF PILE FOUNDATIONS AND ITS REMEDIAL MEASURES

Pile Foundation is a type of foundation where the super structural load is transferred to the weak or compressive layers of soil. This type of pile foundations are majorly used for the construction of bridges, buildings as a support system to avoid excess settlement, the super structural load is safely transferred to the mother earth. Due to the heavy major earthquake, Failure of pile foundations has been observed in many cases. In this paper, three Building model are considered for the study (1 regular building and 2 irregular buildings). The Building consists of G+5 storied RCC structure. The analysis was carried out in “ETABS” software. First the building was analyzed for dead load and imposed load combinations and then the structure was analyzed by Equivalent static method. In this paper black cotton soil was considered for the design of Pile foundation. Design of piles was done using Indian Standards IS 2911 (Part-1 /Sec-2), IS 456:2000 and IS 1893:2002 (Part-1). Graphs were plotted for all three types’ structures. It was found that for C-Type of structure more number of piles has to be provided for seismic analysis rather than static analysis, were as for L-Type number of piles for static analysis yielded more compared to seismic analysis