A database to ensure reliability of bored pile design in Egypt

Abstract

A new electronic database has been developed to house reliable results for more than 318 load tests of large-diameter bored piles in Egypt, including comprehensive records of soil profile, in situ tests and pile characteristics. Using information from the database, the load and resistance factor design reliability-based calibration approach was applied to established pile design methods and another two local methods. Resistance factors were developed using the Monte Carlo simulation, covering several nominal capacity determination criteria from the pile load–displacement response. The analysis was then extended to assess the reliability of the load test results, which represent the key construction control measure for bored piles. This was achieved by connecting the number of load tests conducted per-site basis with an indicative level of soil variation.