Appraisal of Innovative Finned-Pile Foundations to Resist Lateral Loads

Bariker, Pankaj; Kolathayar, Sreevalsa

doi:10.1007/978-981-16-3383-6_61

Cited by 3 publications

(2 citation statements)

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“…The finned piles with rectangular fins provide greater levels of resistance than triangular fins [11,12,16,17]. Finned piles not only increase lateral resistance, but they also decrease lateral deformation; thus, both the criteria (load and serviceability) of the limit state design, as per IS:456-2000 [18], are satisfied [19].…”

Section: Introductionmentioning

confidence: 99%

“…According to previous research, a finned pile foundation is one of the proven innovative techniques [19] that aids the resistance of the static latera load [9][10][11][12][14][15][16][20][21][22], cyclic loads [23], and combined loads [13]; hence, the present study aims to quantify the seismic response of a 25-story building, with a shear-walls facility, supported with a conventionally piled-raft (RP-Mat). This study also attempted to reduce the seismic response of a similar building with the finned-pile mat system (FP-Mat), while numerically considering the soil-pile structure interaction by creating a SSI model using ABAQUS-CAE software.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Soil Structure Interaction of a High-Rise Building Resting over a Finned Pile Mat

Bariker

Kolathayar

2022

Infrastructures

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High-rise building safety is generally supported by pile-mat systems. They must be sturdy enough to withstand potential lateral loads brought on by earthquakes, wind, dredging, and machine vibrations, in addition to increased axial loads. An innovative piled-mat foundation system is required to deal with these impacts because standard pile foundation systems only have lateral capacities that are 10% of their axial capacities. This study aims to reduce the damage caused by seismic impacts on high-rise buildings using shear walls supported by piled mats, thereby minimizing vibrations within the structure. Compared with conventional pile systems, the finned-pile foundation is a proven method that can withstand a 65% to 80% higher lateral load; hence, a series of SSI analyses were performed on a 25-story high-rise building, with the shear wall resting on a finned-pile mat (FP-Mat), under a far-field earthquake excitation, using ABAQUS software. The seismic responses were studied by performing a time–history analysis on the FP-Mat, with varying fin-lengths (Lf) of 0.2Lp, 0.4Lp, 0.6Lp, and 0.8Lp, which was compared with an analysis of a conventional piled-mat (RP-Mat). The seismic responses for RP-Mat and FP-Mats were studied with peak-acceleration, maximum horizontal displacement, and inter-story drifts acting as the damage parameters. The provision of FP-Mats significantly reduced the vibrations and seismic effects on the building, and as the fin-length increased, the vibrations and seismic effects reduced further. The drifting bound was also reduced as the fin-length increased. The optimum fin-length for FP-Mats is suggested to be 0.6Lp in terms of seismic performance and construction efficiency. This study helps one understand the seismic behaviors of high-rise buildings resting on finned pile mats.

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