基于正态动床模型的黄河大跨越群桩基础冲刷分析研究

Experimental Study on the Pile Groups Foundation Scouring in the Big Span of the Yellow River

目前国内外关于单桩基础局部冲刷深度计算经验较为成熟,但对于群桩基础冲刷研究却较少。本文采用较大比尺的正态动床模型对黄河大跨越群桩基础冲刷进行模拟研究,提出黄河下游段的群桩局部冲刷模型,研究了不同桩间距下群桩冲刷的影响系数,以期为黄河大跨越工程塔基冲刷计算提供参考。

At present, the experience of local scouring depth calculation of single pile foundation is relatively mature at home and abroad, but there is less research on group pile foundation scouring. In this paper, a large-scale normal moving bed model is used to simulate the scouring of the large-span group foundation of the Yellow River. In order to provide a reference to the foundation scour calculations of the Yellow River big span project, a partial scouring model of the piles in the lower reaches of the Yellow River is proposed, and the influence coefficient of group pile scour under different spacings is studied,.