钢-混凝土组合加固技术在危旧桥加固中的应用  

Application of Steel-concrete Reinforcement Technology in Strengthening Endangered Old Bridge

作　　者：张俭 ZHANG Jian(Gansu Transportation Research Institute Group Co.,Ltd.,Lanzhou Gansu 730000,China)

机构地区：[1]甘肃省交通科学研究院集团有限公司,甘肃兰州730000

出　　处：《甘肃科技纵横》2024年第2期74-79,共6页Scientific & Technical Information of Gansu

摘　　要：随着国内经济建设迅猛发展,交通量日益增长,部分桥梁由于建设年代较早,已不能适应现有荷载水平,进而成为危桥,严重影响行车安全,故危旧桥梁加固技术已成为当下工程领域需深入研究的课题,亟需探寻有效的加固方案。钢-混凝土加固技术能充分发挥钢材受拉及混凝土受压性能,具有能够大幅度提高桥梁承载能力及刚度、改善结构受力、增加耐久性能等优点,应用前景广阔。文章通过对钢筋混凝土简支T梁采用钢-混凝土组合加固计算分析,对比桥梁加固前后承载能力,为桥梁加固提供新思路。With the rapid development of domestic economic construction and the increasing traffic volume,some bridges can not adapt to the existing load level due to the early construction age,and then become dangerous bridges,which seriously affects the safety of driving.Therefore,the reinforcement technology of dangerous old bridg⁃es has become a topic that needs further research in the current engineering field,and it is urgent to explore effec⁃tive reinforcement programs.Steel-concrete reinforcement technology can give full play to the tensile properties of steel and concrete,and has the advantages of greatly improving the bearing capacity and stiffness of bridges,improv⁃ing the structural force,increasing the durability,etc.,and has broad application prospects.This article through the calculation and analysis of reinforced concrete T beam reinforced by steel-concrete combination,the bearing capac⁃ity of bridge before and after reinforcement is compared,which provides a new idea for bridge reinforcement.

关 键 词：危旧桥 钢-混组合 加固 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]