Results 211 to 220 of about 441 (257)
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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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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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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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Performance-Based Design Method for Multiple Helices of Helical Pile in Cohesionless Soil
Transportation Research Record: Journal of the Transportation Research Board, 2022Multiple helices are being used frequently in helical pile applications nowadays. This paper presents multiple helices on simplified field design charts for small diameter helical piles that relate service compressive load and soil parameters as a group with the pile parameters.
Nur Mohammad Shuman +2 more
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Physical modelling of helical screw piles in sand
2010Empirical correlations between installation torque and uplift capacity of helical screw piles are frequently employed as a procedure for on site quality control of this type of foundation. In this work a theoretical relationship between uplift capacity and installation torque of deep helical screw piles in sand is proposed.
de Hollanda Cavalcanti Tsuha, C. +4 more
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Cyclic load behavior of helical pile-to-pile cap connections subjected to uplift loads
Engineering Structures, 2021Abstract Although significant research has been conducted on helical piles, there is a lack of research and official design guidelines on how to create resilient helical pile-to-pile cap connections, especially in tall and light structures where tensile uplift loads may govern the foundation design.
Serhan Guner, Sundar Chiluwal
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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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Lateral Performance of Large-Capacity Helical Piles
IFCEE 2015, 2015The lateral performance of large-capacity helical piles is of significant interest because they can offer an efficient alternative to conventional piling systems in many applications. This paper presents the results of two field lateral load tests conducted on 6.0 m and 9.0 m large-capacity helical piles installed in cohesive soil.
Mohamed A. Elkasabgy +1 more
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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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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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