中长桩码头在胶结砂地质条件下的桩基内力和位移模拟分析

Numerical modeling of medium length piles wharf under the geological condition of cemented sand

针对胶结砂特殊地质条件需要采用部分中长桩的高桩码头结构,进行了数值分析。采用Plaxis 3D岩土软件建立三维有限元模型,并通过试桩、静载试验、高应变检测等资料,率定相关岩土计算参数,对高桩码头结构进行了分析。分析结果表明,在水平荷载作用下,前排直桩采用中长桩方案时,码头结构和桩周土体的位移均在允许范围内,可满足码头的正常使用。在特殊地质条件下该工程中长桩方案的成功应用,可作为类似项目的一个参考案例。

In this paper, a numerical model was developed to study the high-piled wharf structure with medium length piles used under the particular geological condition of cemented sands. The software Plaxis 3D was applied to establish 3-dimensonal finite-element models. And the relevant calculating parameters of rock-soil were calibrated through the data of pile testing, static load test and high strain detection. Based on the measurement of the above methods, the result shows that it can meet the requirement to normal function, because the displacement of the wharf structure and soil around piles are within allowable range, when the design of medium length piles are adopted during the wharf front construction. The application of medium length pile in particular geological condition provides a reference for similar projects in future.