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Lateral Capacity of Helical Piles in Clays
Journal of Geotechnical Engineering, 1996In this paper, the behavior of helical piles under lateral loads in clayey soils is examined through an experimental investigation on model piles. Tests were conducted on rigid helical piles with different numbers of plates. Model anchors were made of 13.8 mm diameter mild steel shafts to which mild steel plates of 33 mm diameter were welded.
Yenumula V. S. N. Prasad +1 more
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Load Test Results — Large Diameter Helical Pipe Piles
Contemporary Topics in Deep Foundations, 2009This paper will review tests performed on large diameter (219 mm (8.625 in)) helical pipe piles with varying helical configurations (406 mm (16 in) to 762 mm (30 in)) at different locations. Included are descriptions of test pile, description of test procedure, installation procedure, soil profile, and a comparison of test results to theoretical ...
Kelly Hawkins, Richard Thorsten
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Lateral Performance of Helical Pile in Cohesionless Soil
2021Helical pile is one of the deep foundation system used to support the axial compression, axial tension, and lateral loading. Helical piles use as foundation for wind farms, transmission tower, pipelines, for underpinning, monopole, etc., as axial and lateral support.
Raunak Sinha, S. P. Dave, S. R. Singh
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Performance of helical piles in oil sand
Canadian Geotechnical Journal, 2009The results of a comprehensive pile load-test program and observations from field monitoring of helical piles with either a single helix or double helixes installed in oil sand are presented in this paper. Eleven full-scale pile load tests were carried out including axial compression, uplift, and lateral load tests.
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Numerical analysis of helical piles in cohesionless soil
International Journal of Geotechnical Engineering, 2017The paper presents a numerical investigation carried out for helical pile installed in loose cohesionless soil with varying density and dimensions of the helical blade/shaft.
Balu E. George +2 more
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Axial Performance of Helical Tapered Piles in Sand
Geotechnical and Geological Engineering, 2017The axial capacity of novel spun-cast ductile iron (SCDI) tapered pile fitted with a lower helical plate is investigated. Seven instrumented piles, five SCDI tapered and two steel straight shafts, were installed in sand soil using mechanical torque. The piles were tested under axial compressive loading and their ultimate capacities were determined.
Ahmed Fahmy, M. Hesham El Naggar
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Lateral Resistance of Helical Piles in Oil Sands
Contemporary Topics in Deep Foundations, 2009Although there are several methods available for estimating the axial capacities of helical piles, there is little literature available on the lateral performance of helical piles. The results of a lateral pile load test program and field monitoring of helical piles with either single or double helixes installed in oil sand soil are presented in this ...
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Undrained uplift capacity of single helical piles and helical pile groups
2022Nikitas Stefopoulos +2 more
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Design of Helical Piles for Heavily Loaded Structures
New Technological and Design Developments in Deep Foundations, 2000Over the past 20 years the square shaft solid steel helical screw pile has come into expanded use as a permanent deep foundation element in new construction of heavily loaded structures, i.e., column loads in excess of 445 kN (100,000 lbs). This increased use, along with recognition by every national building code in the United States of at least one ...
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The occurrence of residual stresses in helical piles
2015Residual stresses generated during the pile installation are usually observed and considered in the interpretation of conventional pile load tests. However, in the case of helical piles, residual stresses can be generated by previous loadings. At the end of the unloading stage in tension tests, the shaft resistance is reversed, and the helices are ...
Schiavon José A. +3 more
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