| 摘要: |
| 应用合共公路桥的概化模型试验研究了斜交桥的阻水特性、壅水高度．通过对桥位附近的实测水位与水流三维流速分布及紊动特性的比较分析，改进了计算斜交桥壅水的方法，并给出阻水宽度折算系数．经验证，斜交桥修正计算流速和壅水值与概化模型试验的实测值较为吻合． |
| 关键词: 脉动强度 壅水高度 概化模型试验 宽度折算系数 斜交桥 |
| DOI： |
| 分类号:U442.33 |
| 基金项目: |
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| Backwater characteristics of speedway skew bridges |
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SUN Dong-po,YANG Su-ting,SONG Yong-jun,LANG Xing-xue
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College of Water Conservancy, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China
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| Abstract: |
| The block water characteristics and backwater height of skew bridges are experimentally studied with the sketch model of the Hegong bridge of a speedway. By comparing and analyzing the measured water level, threedimensional velocity distribution and turbulent character around the bridge location, the calculation method for the backwater of skew bridges is improved and the reduction factor of block water width is presented. Verification results show that the corrected velocity and backwater height agree well with the measured values in the sketch model test. |
| Key words: fluctuation strength backwater height sketch model test reduction factor of width skew bridge |
