摘要
目的为了提高大跨度连续梁桥施工控制中结构分析的精度问题,提出了将Kalman滤波法与正装分析法相结合进行施工控制的计算,从而改善倒装分析法的不足.方法通过建立Kalman滤波模型得出最优无偏估计值,然后结合正装分析法的模型预测成桥的最终状态.将滤波分析程序与有限元软件Midas/Civil通过计算机Fortran语言连接起来,形成一个用于桥梁监控计算分析的系统程序.结果通过工程实例分析表明,通过该方法得出的成桥线形与设计线形的最大偏差仅为1.3cm,线形平顺,达到了理想的控制目标.结论应用笔者提出的方法,有较高的计算精度,满足设计线形的偏差要求,能较好地解决桥梁施工中较多出现的波浪线形问题.
In order to improve accuracy of structural analysis by construction control for long span continuous beam bridges, a new computational method combined with the Kalman filter and the formal method was proposed. The optimal unbiased estimation value was obtained through a Kal- man filtering model and then combining with the final state of bridge predicted by the forward analysis method, a computational program for bridge construction control based on the filter finite element analysis software Midas/Civil was compiled with Fortran language. Engineering computa- tional examples show that the maximum deviation between the formed bridge line and the design line is only 1.3cm. The lines are smooth and the control is ideal. Conclusion is that the proposed method has higher computational accuracy and meets requirements for design alignment. With thismethod, wave shape problems by bridge constructions can be well solved.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2015年第4期653-660,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(51078242)
住房和城乡建设部科学技术项目(2015-R2-027)
高校优秀科技人才支持计划资助项目(LR2013025)
