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双排钢板桩支护结构具有复杂的受力特性。首先,阐述了当前常用的几种双排桩结构的计算方法,简要分析了这些方法的优缺点。其次,通过与模型试验结果的对比,说明Plaxis软件的可靠性和参数选取的正确性。然后,结合对有限元模拟结果的分析,指出双排钢板桩结构存在较强的三维空间效应。最后,对比例系数法的土压力分布进行了一些优化,并提出了双排钢板桩排距的优化取值范围。该结论可为软土地区类似的工程提供有益的借鉴和参考。
Double-row steel sheet pile supporting structure has complex stress characteristics. First of all, the calculation methods of several commonly used double-row pile structures are expounded. The advantages and disadvantages of these methods are briefly analyzed. Secondly, the reliability of Plaxis software and the correctness of parameter selection are illustrated through the comparison with the model test results. Then, combined with the analysis of finite element simulation results, it is pointed out that there is a strong three-dimensional space effect in the double-row steel sheet pile structure. Finally, the earth pressure distribution of the proportional coefficient method is optimized, and the optimum range of double row steel sheet pile spacing is proposed. This conclusion can provide useful reference and reference for similar projects in soft soil area.