基于灰色预测的大跨径预应力混凝土连续刚构桥施工控制研究  

Research on Construction Control of Long-span Prestressed Concrete Continuous Rigid Frame Bridge Based on Grey Prediction

作　　者：陈锋 曾嵘 朱叶军 匡渝阳 Chen Feng;Zeng Rong;Zhu Yejun;Kuang Yuyang(Zhejiang Communications Construction Hongtu Transportation Construction Co.,Ltd.,Hangzhou 310051,China;Bridge Branch of Zhejiang Communications Construction Group Co.,Ltd.,Hangzhou 310000,China;Zhejiang Communications Construction New Material Co.,Ltd.,Hangzhou 311400,China;Zhejiang Daying Construction Co.,Ltd.,Hangzhou 311203,China)

机构地区：[1]浙江交工宏途交通建设有限公司,杭州市310051 [2]浙江交工集团股份有限公司大桥分公司,杭州市310000 [3]浙江交工新材料有限公司,杭州市311400 [4]浙江大盈建设有限公司,杭州市311203

出　　处：《北方交通》2024年第10期17-21,共5页Northern Communications

摘　　要：在大跨径连续刚构桥悬臂施工过程中,由于混凝土的收缩、徐变等因素,施工过程中其悬臂端的实际施工线型与设计理论值存在一定的误差。为降低该误差,采用灰色预测控制系统进行分析。施工后对不同位置高程进行测量并标定,边跨合拢段左右两端高程为0.016m,中跨合拢段左右两端与设计高程差为94.369mm,均控制在94.353mm以内,实际监测与控制过程中,该误差值均满足设计要求。In the cantilever construction process of long-span continuous rigid frame bridges,due to factors such as concrete shrinkage,creep and so on,there is a certain degree of error between the actual construction line type of the cantilever end and the theoretical value of design during the construction process.In order to reduce the error,the analysis is made by using the grey prediction control system.After construction,the elevation of different positions is measured and calibrated.The elevation of the left and right ends of the side span closure section is 0.016m,and the difference between the left and right ends of the mid span closure section and the design elevation is 94.369mm,both of which are controlled within 94.353mm.In the actual monitoring and control process,the error values meet the design requirements.

关 键 词：灰色预测系统 大跨径预应力 施工控制 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]