满都户大桥改扩建工程总体设计及关键技术问题分析  

作　　者：龚鹏旭 宋新斌 王宏翾 

机构地区：[1]辽宁省交通高等专科学校,沈阳110122 [2]辽宁科杰公路工程监理有限公司,沈阳110122

出　　处：《科技创新与应用》2025年第6期125-128,共4页Technology Innovation and Application

摘　　要：沈环线满都户大桥改扩建工程是辽宁省普通公路重点建设项目,由于旧桥荷载等级远低于现行标准,同时桥面破坏严重,桥面宽度无法满足现状交通要求,存在极大安全隐患,且旧桥设计洪水频率为50年一遇,低于现行标准,无法满足泄洪要求。该项目的实施将彻底解决这一交通隐患。因此,满都户大桥改扩建工程总体设计尤为重要。如何选择合理的路基横断面型式和边坡坡度;如何采取经济有效的岸坡防护措施;如何结合地形、地质、水文等建设条件进一步优化桥梁基础及下部结构设计,加强桥梁耐久性,确保结构安全可靠和经济合理等是满都户大桥改扩建工程的关键技术问题。The reconstruction and expansion project of the Manduhu Bridge on the Shenhuan Line is a key construction project for ordinary highways in Liaoning Province.Since the load level of the old bridge is much lower than the current standards,and the bridge deck is seriously damaged,the width of the bridge deck cannot meet the current traffic requirements,posing a great safety hazard.Moreover,the design flood frequency of the old bridge is once every 50 years,which is lower than the current standards and cannot meet the flood discharge requirements.The implementation of this project will completely solve this traffic hazard.Therefore,the overall design of the Manduhu Bridge reconstruction and expansion project is particularly important.How to select a reasonable subgrade cross-section type and slope gradient;how to adopt economical and effective bank slope protection measures;how to further optimize the bridge foundation and substructure design in combination with terrain,geology,hydrology and other construction conditions,strengthen bridge durability,and ensure structural safety.Reliable and economical rationality are key technical issues in the reconstruction and expansion project of Manduhu Bridge.

关 键 词：公路 总体设计 满都户大桥 岸坡防护 路基防护 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]