摘要
采用从拱背上变截面加固改造双曲拱桥的综合治理新方法,对新疆头屯河水库溢洪道交通桥进行了加固。该法在分析拱桥受力特性的基础上提出了分段加固的思路,重点加固拱顶、拱脚,充分利用主拱圈富裕截面,避免了盲目拆除重建造成浪费资金与时间的缺点,对其他拱桥改造具有一定的指导意义。
The access bridge across the Toutunhe reservoir spillway was reinforced by use of the new method of rehabilitating the double- curvature arch bridge from the variable cross-sections on extrados. Based on analysis of the bearing characteristics of arch bridge, a concept of reinforcing the arch bridge by sections is proposed, with focus on reinforcing the arch crown and springing, so as to make full use of the affluent cross sections of the main arch ring, which avoids the waste of money and time in blind removal and rebuilding, providing references for other arch bridge rehabilitation.
出处
《西北水电》
2011年第6期20-22,共3页
Northwest Hydropower
关键词
拱桥
拱背
变截面
加固
arch bridge
extrados
variable cross-section
reinforcement
