...Antonio Kodsy; Nikolaos Machairas; Magued G. Iskander The interpretation of field load tests on piles has many important practical considerations especially with respect to identifying the capacity of a pile. A number of interpretation criteria have been used in the past. With the increase...

...Majid Hamed; Hanifi Canakci; Ahmed Nasr Experiments regarding single model piles embedded in organic soil were conducted to determine the effect of pile type and soil density on ultimate pile oblique pull-out loads. Wood, steel, and smooth as well as rough concrete piles with diameters of 20 mm...

...Hongyu Qin; Wei Dong Guo Model tests were conducted to investigate the behavior of vertically loaded, free head piles undergoing lateral soil movement using an experimental apparatus developed in house. This paper presents ten new tests on an instrumented model pile in dry sand, which provide...

... to be in accordance to the thermocouples. A field study of axially loaded concrete pile subjected to cooling and heating cycle is presented. Measurements in the test pile and adjacent borehole indicate similar strain profiles and temperature changes between BOTDR and conventional instrumentation such as vibrating...

...M. A. Gabr; Roy H. Borden; R. L. Denton; Alex W. Smith The use of jetting is an approach to aid the installation of piles, especially in areas that have hard but relatively shallow subsurface soil layers. Jetting piles for a portion of their installation depth minimize their exposure to excessive...

...Junhwan Lee; Kyuho Paik; Daehong Kim; Donggyu Park Current practice for the estimation of the ultimate lateral load capacity of piles is typically based on the vertical effective stress σ′ v , while the effect of the lateral effective stress σ′ h is not specifically considered. In the present study...

...Dov Leshchinsky; Farshid Vahedifard; Christopher L. Meehan A scale modeling technique is presented for simulating the uplift behavior of piles in sand, which satisfies stress and strain similitude with full-scale prototypes. A hydraulic gradient approach was used to increase the body forces...

...S. V. Krishna Rao; Ahmed. M. A. Nasr This paper presents the results of a series of plain strain model tests of strip footing adjacent to sand slopes reinforced with piles. The main objectives of this study are to determine the influence of piles reinforced sand slope on the bearing capacity...

...JM Mayoral; JM Pestana; RB Seed The evaluation of performance of soil-pile-structure systems under seismic loading is one of the most complex problems in earthquake engineering. In the most common methodology, force-displacement curves are used to describe the nonlinear response of discrete soil...

...J Prada; D Fratta; JC Santamarina Inherent physical difficulties associated with the effect of low-velocity anomalies on wave propagation, limited data sets, and restricted illumination angles affect the tomographic assessment of piles, caissons, slurry walls, and other similar geotechnical systems...

...RA Hameed; M Gunaratne; S Putcha; C Kuo; S Johnson Water jetting can be utilized as an effective aid to impact pile driving when hard strata are encountered above the designated tip elevation. When jetting, the immediate neighborhood of the pile is first liquefied due to high pore pressure induced...

...AS Alawneh; AI Husein Malkawi Based on both field data collected from engineering literature and measurements made using model piles, a correlation for the residual pressure at the pile tip point is presented. The resulting correlation suggested that pile flexibility is a key parameter controlling...

...S Belkhir; S Mezazigh; D Levacher Due to recent research advances in understanding mechanisms that govern deep behavior foundations, vertical piles can now be used to correctly support lateral loads. This paper concerns the development of a computer program for studying non-linear behavior...

... on the soilinterface response. It is demonstrated that the patterns of behavior in these tests are similar to those observed in model pile tests and that the constant normal stiffness (CNS) condition is required to account for the effects of the volume changes that occur as soil adjacent to a pile is sheared. In dense...

... suggest that excellent agreement can be obtained in sandy soils, but that the current evaluation procedure may tend to overpredict capacity by as much as 30% in stiff, overconsolidated clays. piles drilled shafts load tests instrumentation statnamic method References Ballouz , M...

...KS Tawfiq In this study, the polyethylene sheeting method for downdrag mitigation in piles has been investigated along with the conventional bitumen coating method. A large number of concrete blocks were prepared with different arrangements of bitumens and polyethylene sheets and tested...

...M McVay; D Bloomquist; D Vanderlinde; J Clausen Presented is a novel apparatus to drive and laterally load groups of six to nine piles in flight. The main component of the device is a flat plate with multiple apertures which are opened or closed through pneumatic solenoids while being raised...

...DA Brown; SA Hidden; S Zhang Derivation of p-y curves from lateral load tests on deep foundations is a tedious and expensive task, requiring large numbers of strain gages along the length of the pile to develop bending moment versus depth relationships. A method is proposed which allows derivation...

...RH Al-Douri; TS Hull; HG Poulos Two series of tests were performed on calcareous and silica sands in different test chamber sizes and with different base conditions to investigate the influence of test chamber boundary conditions on model pile foundation behavior. The first series of tests...

... with the variation of skin friction on piles under cyclic loading. It is demonstrated that the response in the shearbox tests with a constant normal stiffness may be predicted from the response observed in conventional shearbox tests, and that conventional shearbox tests can thus provide valuable information...