调整拱轴线与加大拱肋截面法综合加固某双曲拱桥  

A Hyperbolic Arch Bridge reinforcement

作　　者：田杰 

机构地区：[1]常德市公路工程总公司,湖南常德415000

出　　处：《湖南城市学院学报（自然科学版）》2016年第3期1-2,共2页Journal of Hunan City University:Natural Science

摘　　要：某大桥为双曲拱,经现场检测各项指标,不满足现行荷载等级要求。经过调整拱轴线与加大拱肋截面法综合加固处理后,对加固效果进行荷载试验,加固后结构刚度明显提高,拱脚截面最大负弯矩工况四分点最大挠度减少32.7%,拱顶最大正弯矩工况拱顶最大挠度减少37.1%,整体加固效果明显。A bridge is a hyperbolic arch bridge, after testing, the indicators did not meet the requirements of the current load level. To adjust his arch axis and the increase of arch rib section after comprehensive treatment, obviously improve the structure stiffness, the arch foot section deflection of the maximum negative moment condition quartile reduced by 32.7%, vault vault the most-positive bending moment conditions decreased by 37.1%, the maximum deflection integral reinforcement effect is obvious.

关 键 词：加大拱肋截面 调整拱轴线 加固 双曲拱桥 

分 类 号：U445[建筑科学—桥梁与隧道工程]