论文部分内容阅读
环翼式桥墩纵向串联布置时,为深入研究桥墩局部冲刷防护问题,从减小冲坑大小和近底垂向流速的方向出发,通过制作桥墩模型,设计正交试验,研究单向水流条件下桥墩间距、下游侧桥墩防冲板的安装高程及数量对两个纵向串联桥墩中下游侧桥墩的冲刷深度的影响,并对所测结果进行极差分析和SPSS方差分析。结果表明,下游侧桥墩防冲板安装高程的显著性比两桥墩间中心间距大小和下游侧桥墩防冲板安装数量的显著性要高,且下游侧桥墩防冲板的安装数量对桥墩冲刷的影响最小,影响效果从大到小依次为下游侧桥墩防冲板的安装高程、桥墩间距、下游侧桥墩防冲板的安装数量。
In order to further study the local scour protection of bridge piers, when the ring-wing bridge piers are arranged longitudinally in series, starting from the direction of reducing the size of the scuppers and the velocity of the near-bottom-vertical flow, the pier model is designed and the orthogonal experiment is designed. The distance between the pier and the pier, the installation elevation and quantity of the downstream pier anti-punching board on the erosion depth of the bridge pier at the middle and the downstream of the two longitudinal series piers, and the range analysis and SPSS ANOVA of the measured results are carried out. The results show that the significance of the installation height of the downstream pier anti-punching board is more significant than the center distance between the two bridge piers and the number of anti-punching boards installed on the downstream side of the pier. The installation quantity of the anti- The influence is smallest, and the influence effect descending order is the installation elevation of the downstream pier anti-punching board, the pier spacing and the installation quantity of the downstream pier anti-punching board.