摘要
在公路桥梁建设过程中,受混凝土材料特性的影响,桥梁变形问题频发,因此提出考虑混凝土结构耐久性的公路桥梁变形安全控制方法设计。公路桥梁建设项目实施时,按照合适的比例添加再生骨料,完成再生混凝土的配制,为工程质量提供基础材料保障;以钻孔注浆的方式为主,设计桥梁桩基加固方案。通过倒拆分析法,构建施工参数计算模型;根据施工参数的实时变化,调整实际施工要求,从而实现公路桥梁变形安全控制。结果表明:在实际公路桥梁建设过程中,设计方法中的应用,使后续检测结果中桥梁裂缝情况大幅度减少,且桥梁最高沉降数据为8 mm,沉降速率约为0.17 mm/d,均在安全范围之内,提升了公路桥梁变形安全控制效果。
In the process of highway bridge engineering construction,due to the influence of concrete material characteristics,bridge deformation problems occur frequently.Therefore,this paper puts forward the design of highway bridge deformation safety control method considering the durability of concrete structure.During the implementation of highway and bridge construction project,the recycled aggregate is added according to the appropriate proportion to complete the preparation of recycled concrete,so as to provide basic material guarantee for the project quality;the reinforcement scheme of bridge pile foundation is designed mainly by drilling and grouting.The calculation model of construction parameters is constructed by the inverted analysis method;according to the real-time change of construction parameters,adjust the actual construction requirements,so as to realize the safety control of highway bridge deformation.The analysis results of engineering examples show that:in the actual process of highway bridge construction,the application of the design method in this paper greatly reduces the bridge cracks in the follow-up test results,and the maximum settlement data of the bridge is 8 mm,and the settlement rate is about 0.17 mm/d,which is within the safe range,and improves the safety control effect of highway bridge deformation.
作者
周超民
张辉
卢开艳
ZHOU Chao-min;ZHANG Hui;LU Kai-yan(China Highway Engineering Consulting Group Co.,Ltd.,100082,Beijing,China)
出处
《建筑技术》
2023年第8期900-903,共4页
Architecture Technology
关键词
混凝土结构
耐久性
公路桥梁
变形控制
桩基加固
concrete structure
durability
highway bridge
deformation control
pile foundation reinforcement
