上跨公路高架桥施工影响公路变形预测与分析  

Prediction and Analysis of Highway Deformation Influenced by Overpass Highway Viaduct Construction

作　　者：刘晓晨 马海忠 肖英楠 LIU Xiao-chen;MA Hai-zhong;XIAO Ying-nan(Beijing Tesida Transportation Facilities Counsultants Co.Ltd.,Beijing 100067,China)

机构地区：[1]北京特希达交通勘察设计院有限公司,北京100067

出　　处：《工程建设与设计》2025年第2期64-66,共3页Construction & Design for Engineering

摘　　要：以北京某国道新建立交桥及匝道桥上跨京沪高速公路为工程背景,采用FLAC 3D数值模拟软件,计算分析新建桥梁结构施工对既有高速公路的变形影响,研究施工过程中既有公路的变形规律。计算结果表明,上跨高速公路新建桥梁结构施工对既有高速公路变形影响较小,能够满足高速公路变形控制要求及交通运营要求。This paper takes a new national highway overpass and ramp bridge across the expressway from Beijing to Shanghai as the engineering background.FLAC 3D numerical simulation software is used to calculate and analyze the deformation effect of new bridge construction on existing highways,and study the deformation law of existing highways during construction.The results show that the construction of new bridge structure has little influence on the deformation of existing expressways,and can meet the requirements of highway deformation control and traffic operation.

关 键 词：桥梁施工 公路变形 数值模拟 

分 类 号：U442[建筑科学—桥梁与隧道工程]