S219永定线大林淮河桥桥墩冲刷分析及加固  

Analysis on Bridge Scour and Strengthening of Dalin Huai River Bridge of S219 Provincial Highway

作　　者：王德新 王贺[2] 

机构地区：[1]驻马店市公路规划勘察设计院,河南驻马店463000 [2]重庆交通大学岩土工程研究所,重庆400074

出　　处：《筑路机械与施工机械化》2017年第8期67-70,共4页Road Machinery & Construction Mechanization

基　　金：国家自然科学基金项目(41071017);西部交通建设科技项目(2009318221035)

摘　　要：针对省道S219永定线大林淮河桥的桥墩冲刷问题,按一般冲刷和局部冲刷叠加计算冲刷深度,确定桥墩冲刷对桩基础竖向承载力的影响,并对单桩承载力进行了验算,计算证明需加固河床。根据现场实际情况,考虑石笼耐冲刷和浆砌片石不容易被人为破坏的优点,抗冲刷加固的综合效果较好,推荐采用石笼和浆砌片石的加固方案。从近年实践情况来看,防护效果较好。Aimed at the problem of bridge scour that happens to the Huai River Bridge in Dalin of S219 provincial highway, the effect of bridge scour on the vertical bearing capacity of pile foundation was determined by combining the calculation of the depths of general and local scour. The bearing capacity of single pile was calculated and checked to prove the need to strengthen the river bed. Considering the actual situation of the site, the combination of stone cage and mortar flagstone was recommended because of their respective advantages of the resistance to scouring and not easy to be vandalized. The protection effect has been proved by the performance in recent years.

关 键 词：桥梁工程 一般冲刷 局部冲刷 石笼防护 

分 类 号：U443.2[建筑科学—桥梁与隧道工程]