Department: Structural Engineering
Name: Nontapat Nimityongskul
Email: nnimityo @ ucsd.edu
Grad Year: 2009
Many pile supported bridges are constructed near or in a natural or man-made slope. In some cases, it is desirable to place a pile at an angle relative to the horizontal surface to increase the lateral capacity. This is referred to as a battered pile. Currently, Caltrans has no specific procedures for the design of battered piles or piles in or near sloping ground. One of the most widely accepted methods for analysis of laterally loaded piles is the Winkler spring method in which the soil resistance along the pile is modeled using a series of nonlinear springs, commonly known as p-y curves. Methods have been proposed to account for laterally loaded piles in such conditions by modifying elements of p-y curves (e.g., initial slope, and ultimate soil resistance). These methods are based on results from small-scale model tests and centrifuge tests. In this project, a series of full-scale lateral load tests will be conducted to investigate the major factors affecting lateral response of piles which include batter angles, distance from the slope crest, and soil types. From test results, p-y curves will be back-calculated and compared with existing methods. A design method will be proposed for the analysis of laterally loaded piles in such conditions based on full-scale test results.
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