STRESS-STRAIN CHARACTERISTICS OF A DYNAMICALLY LATERAL LOADED PILE IN SOFT MARINE SEDIMENTS - A MODEL STUDY

摘要

This study deals with the analytical and experimental analysis of a laterally loader vertical pile embedded in a weak marine foundation. Special emphasis in the experimental phase is placed upon dynamical loading of the freehead pile. In particular, the applied lateral load is oscillatory, similar to that produced by ocean waves.nThe method employed herein of obtaining experimental results is based upon the principles of dimensional analysis and dynamical similarity. A laboratory model pile was designed b3' these principles and electroni¬cally instrumented to simultaneously record applied loading and induced stresses at selected locations along the model pile. The study is of interest from two standpoints; it uses a dynamically sealed model and the instrumentation allows simultaneous evaluation of applied force and resulting bending moments induced along the pile under dynamic conditions.nTest results indicate that there is virtually no difference between bending moments caused by a low frequency dynamic lateral load as com¬pared to a static lateral load. With the representative oscillatory load frequency used for these tests, the pile vibrates in a standing wave form which is at all depths in phase with the applied load