Field Testing of Laterally Loaded Piles In Sand

Abstract

A series of field tests was made to develop criteria for the design of laterally loaded piles in sand under both static and cyclic loads. Two 24-in. diameter piles were instrumented with strain gages for measur~ng bending moment at points along the piles. The gages were calibrated by applying known moments and read ing the output of the gages.~ydraulic equipment was developed for applying both static and cyclic loads. A calibrated load cell, employing strain gages, was used for measuring lateralload, and linear-displacement transducers were used for measuring the deflection of the pile at two points above the ground surface. The output from the moment gages, from the load cell, and from the linear -displacement transducers was rec.orded with a high-speed digital system.A site was selected at Mustang Island, Texas,and two soil borings were taken. The instrumented piles, the reaction piles, and the loading apparatus were installed, and a comprehensive series of field tests was perforxned.

Essais en centrifugeuse et technique de la modélisation

“…De plus, il est apparu souhaitable de simuler un prototype réel et, si possible, de comparer les résultats avec ceux des essais en centrifugeuse. L'essai de chargement latéral sur un pieu de l'Ile Mustang fut choise pour cette étude [4]. L'auteur avait essayé précédemment de reproduire cet essai en centrifugeuse sans succès net bien que des meilleurs résultats aient été obtenus par BARTON [1].…”

Açik Deni̇z Rüzgar Enerji̇si̇ Türbi̇nleri̇ Teki̇l Kazik Temelleri̇ni̇n Çevresi̇ndeki̇ Boşluk Suyu Basinci Geli̇şi̇mi̇

“…Ancak, doğrusal olmayan zemin direnci-kazık deformasyonu ilişkisine dayanan p-y yöntemi, çapları 1,0 ve tekrarlı yükleme sayısı 100 olan arazi kazık deneylerine dayanmaktadır [5,6]. Kazıkların boyutlandırılması için geliştirilen bir diğer yaklaşım, toplamda 34 kazık üzerinde uygulanmış tekrarlı yükleme sayısı ancak 500 e kadar ulaşan çeşitli deney sonuçlarına dayanmaktadır [7].…”

Effect of foundation modelling on the fatigue lifetime of a monopile-based offshore wind turbine

“…1 between points 0 and 1. Several pile tests displaying the non-linear loaddisplacement response can be found in the literature; see for instance Poulos and Davis (1980), Cox et al (1974), and Reese et al (1975) for flexible piles or Byrne et al (2015) for more rigid piles with large diameters typical for monopiles supporting monopile-based OWTs.…”