Design criteria for pipe piles in silica sands

摘要

Previous studies (e.g. Hossain & Briaud 1993, Jardine & Chow 1996) have suggested that CPT-based design criteria for axial capacity of driven piles in silica sands are more reliable than design criteria based on soil boring data. These studies were based on a limited number of load tests on driven steel piles at sites where CPT data were available. To confirm this suggestion, a data base was made consisting of sets of high quality soil and pile load test data which met the following criteria: ⅰ) driven open and closed-ended steel piles, ⅱ) reliable pile load tests, and iii) well defined soil conditions, including CPT data. Forty-five pile load tests that meet these criteria were found. In this paper, the database of load test results is compared with current offshore design criteria (API 1993, MTD 1996) plus a new design method (Fugro 2004).