无坎宽顶堰公式计算桥梁壅水的方法探讨  

Discussion on calculation method of bridge backwater by formula of broad crested weir without ridge based

作　　者：万长宇 WAN Chang-yu(Anhui Survey and Design Institute of Water Resources and Hydropower Co.,Ltd.,Hefei 230088,China)

机构地区：[1]安徽省水利水电勘测设计研究总院有限公司,安徽合肥230088

出　　处：《江淮水利科技》2022年第5期19-22,共4页Jianghuai Water Resources Science and Technology

摘　　要：为快速有效利用无坎宽顶堰公式计算桥梁的壅水值,分别利用常用办公软件Excel和常规CAD绘图法对淮北平原某河流一跨河桥梁进行桥梁壅水计算。两种方法河道过流面积A1的计算数值是一致的,桥孔过流面积A2以及桥梁阻水面积A3计算结果之间仅存在极小的误差(小于0.04%),最后得出的桥梁壅水值基本一致。结果表明利用Excel编辑公式计算桥梁壅水的方法是可靠的,同时提高了工作效率,降低了重复工作量,在类似计算中具有一定参考价值。In order to calculate the bridge backwater by formula of broad crested weir without ridge quickly and effectively,taking an example of a river-crossing bridge in the huaibei plain,the bridge backwater is calculated by using the commonly used office software Excel and the conventional CAD drawing method.The calculation values of the river channel overflow area A1by the two methods are consistent,there is a small error(less than 0.04%)between the calculation results of the bridge hole overflow area A2and the bridge water blocking area A3,the final backwater value of the bridge is consistent.The results show that the method of calculating bridge backwater by using Excel editing formula is reliable,and at the same time,it improves work efficiency and reduces repetitive workload.It has certain reference value in similar calculation.

关 键 词：桥梁 壅水 无坎宽顶堰公式 EXCEL 

分 类 号：U442.33[建筑科学—桥梁与隧道工程]