滁河堤防加固对跨河大桥桥墩的影响分析

    Analysis on Influence of Chuhe River Embankment Reinforcement on Cross-river Bridge Piers

    • 摘要: 为了分析滁河堤防加固对跨河大桥桥墩的影响, 建立了堤防典型设计断面的数值计算模型,应用修正Bishop-C 法对堤防潜在滑弧与桥墩灌注桩相对位置进行快速分析,同时采用Biot 固结原理分析施工对堤防沉降的影响。研究结果表明,采用Bishop-C 法搜索单个工况的最危险潜在滑弧时间仅为2.145 s。培土后,堤防潜在滑弧出露点有向坡脚处移动的趋势,但其位移变化对距迎水坡坡脚6 m 范围外沉降的影响非常小。

       

      Abstract: In order to analyze the influence of Chuhe River embankment reinforcement on cross-river bridge piers, a numerical calculation model of the embankment typical-designed section is established. By applying modified Bishop-C method, the relative position of embankment potential slip arc of and bridge pier filling pile is analyzed quickly. Meanwhile, Biot consolidation principle is adopted to analyze the influence of construction on embankment settlement. The results show that the most dangerous potential slip arc searching time of a single working condition is only 2.145s by using Bishop-C method. After soil cultivation, the embankment potential slip arc dew point tends to move towards the slope foot. The resulting displacement change has little influence on the settlement beyond 6m away from the slope foot.

       

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