连续刚构桥悬臂施工合龙误差风险分析

Risk Analysis of Closure Deflection Error for Continuous Rigid Frame Bridge with Cantilever Construction

为研究桥梁悬臂施工过程风险分析方法,以百岁溪大桥悬臂浇筑施工中跨合龙挠度风险误差为例,综合运用BP神经和蒙特卡罗原理,计算出百岁溪大桥在复杂因素作用下中跨合龙挠度误差不满足设计要求的风险概率值,并对百岁溪大桥中跨合龙挠度误差风险进行分析评价。

In order to research the risk analysis method of bridge cantilever construction process,the risk of mid-span closure deflection error in cantilever casting construction of Baisuixi bridge was taken for an example.Based on the BP neural network and Monte Carlo principle,the risk probability of mid-span closure deflection error of Baisuixi bridge under complex factors was calculated out.The result showed that the closure deflection error did not meet the design requirements.Then the risk analysis of mid-span closure deflection error of Baisuixi bridge was implemented.