新建铁路桥对跨越河道的冲刷影响研究  

Study on influence of new built railway bridge on river-crossing erosion

作　　者：王子佳[1] 马雪梅[1] 曹国忠[1] 孟令明[1] 

机构地区：[1]水利部松辽水利委员会,吉林长春130021

出　　处：《东北水利水电》2016年第6期36-37,5,共2页Water Resources & Hydropower of Northeast China

摘　　要：文章采用非粘性土河床冲刷公式计算,对敖海营子中桥新建工程桥下一般冲刷及桥墩局部冲刷特征进行了计算分析。成果表明,现状两岸滩地平坦开阔,20年一遇洪水冲刷对两岸农田无影响;100年一遇洪水冲刷时,新建铁路桥一般冲刷加局部冲刷为6.3 m,远小于桥墩基础埋深30~32 m,桥墩基础设计满足防冲要求。Using the non-clay river bed erosion formula, the paper analyzes and calculates the characteristics of general erosion and local erosion at pier for the new engineering bridge of Aohaiyingzi medium bridge. The re sults show that the flood land is wide and flat at present, the flood of 20-year frequency has no effect on the farmland on both sides of the river, and the general erosion and the local erosion of the new built railway bridge is 6.3m under the flood of 100-year frequency. The erosion depth is much less than the pier foundation depth which is 30 to 32 m, the design of the pier foundation could meet the anti-scour requirement.

关 键 词：新建铁路桥 冲刷计算 非粘性土 河道 

分 类 号：U44[建筑科学—桥梁与隧道工程]