Response of tapered piles subjected to lateral loading

Eighteen lateral loading tests were conducted on large-scale steel piles to establish the lateral behaviour of tapered piles in cohesionless soil. Three piles 1.52 m in length with different taper angles but the same average embedded diameter of 168 mm were installed in sand enclosed in a steel chamber 1.5 m in diameter and 1.445 m in depth. The soil chamber was lined with an air bladder so that sand inside the chamber could be pressurized to vary the confining pressure. The piles were instrumented with electrical resistance strain gauges and the horizontal pile movements at grade and the loading point were measured with displacement transducers. The bending-moment functions along the pile were calculated from the strain measurements by curve fitting the measured strain data. The soil resistance (p) and pile displacement (y) relationships were developed in the form of p-y curves by differentiating and integrating these bending-moment functions. It was found that tapered piles carried up to 77% more latera...

[1]  M. Randolph,et al.  The response of flexible piles to lateral loading , 1981 .

[2]  Harry G. Poulos,et al.  Single Pile Response to Cyclic Lateral Load , 1982 .

[3]  Bengt B. Broms,et al.  LATERAL RESISTANCE OF PILE IN COHESIONLESS SOILS , 1964 .

[4]  M T Davisson,et al.  LATERAL LOAD TESTS ON PILES - ARKANSAS RIVER PROJECT , 1970 .

[5]  A. M. Rybnikov.  Experimental investigations of bearing capacity of bored-cast-in-place tapered piles , 1990 .

[6]  Trevor G. Davies,et al.  Discussion of "Analysis of Laterally Loaded Piles in Soft Clays" , 1989 .

[7]  L. Reese,et al.  LATERAL LOADING OF DEEP FOUNDATIONS IN STIFF CLAY , 1975 .

[8]  Shamsher Prakash,et al.  Nonlinear Lateral Pile Deflection Prediction in Sands , 1996 .

[9]  M. Hesham El Naggar,et al.  Axial capacity of tapered piles established from model tests , 1999 .

[10]  L. Reese,et al.  Analysis of Laterally Loaded Piles in Sand , 1974 .

[11]  B B Broms,et al.  Lateral Resistance of Piles in Cohesive Soils , 1964 .

[12]  Michael W. O'Neill,et al.  Cyclic Lateral Loading of a Large‐Scale Pile Group , 1987 .

[13]  Harry G. Poulos,et al.  Closure of "Behavior of Laterally Loaded Piles: I-Single Piles" , 1971 .

[14]  M. Hesham El Naggar,et al.  Experimental study of axial behaviour of tapered piles , 1998 .

[15]  Trevor G. Davies,et al.  Nonlinear analysis of laterality loaded piles in cohesionless soils , 1987 .

[16]  G. G. Meyerhof,et al.  Behaviour of pile foundations under special loading conditions: 1994 R.M. Hardy keynote address , 1995 .

[17]  H. Matlock.  Correlation for Design of Laterally Loaded Piles in Soft Clay , 1970 .

[18]  P. Pise,et al.  Lateral Response of Free‐Head Pile , 1983 .

[19]  E I Robinsky,et al.  Effect of Shape and Volume on the Capacity of Model Piles in Sand , 1964 .

[20]  Fazlur R. Khan.  Lightweight Concrete for Total Design of One Shell Plaza , 1971 .