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大直径超长桩在大型桥梁和高层建筑中得到了越来越广泛的应用,但实际工程中往往会出现桩越来越长的现象,有时桩太长会造成浪费,且不科学,所以有必要研究大直径超长桩的有效桩长问题。而大直径超长桩试桩困难、成本高,为了找到有效桩长而进行桩长不同的一组试验是不现实的,所以本文基于弹塑性理论用包含点面接触单元的有限元法对大直径超长桩的有效桩长进行了数值模拟分析。
Large-diameter and ultra-long piles have been more and more widely used in large-scale bridges and high-rise buildings. However, in actual projects, piles tend to become more and more long. Sometimes, piles that are too long cause waste and are unscientific. Therefore, there are It is necessary to study the effective length of large-diameter long piles. However, large-diameter ultra-long piles are difficult and costly to test. It is unrealistic to carry out a set of tests with different pile lengths in order to find an effective pile length. Therefore, the finite element method with point contact elements is used The effective pile length of the ultra-long diameter pile was numerically simulated.