热轧型钢-混凝土组合梁在危桥改造工程中的应用  

Application of Hot Rolled Steel-concrete Composite Beam in Dangerous Bridge Reconstruction Project

作　　者：朱静 Zhu Jing(Liaoning Provincial Transportation Planning and Design Institute Co.,Ltd.,Shenyang 110166,China)

机构地区：[1]辽宁省交通规划设计院有限责任公司,沈阳市110166

出　　处：《北方交通》2022年第1期25-27,31,共4页Northern Communications

摘　　要：某桥位于朝阳市,由于运营年限较长,且重载交通较多,桥梁病害较为严重,该桥半幅已封闭交通,经过专家评审,该桥上部重新改建。改建方案采用型钢-混凝土组合梁设计,计算并验证了热轧型钢-混凝土组合梁的强度、刚度及稳定性,根据改建后桥梁运营状况的跟踪反馈,验证了热轧型钢-混凝土组合梁施工的高效性以及结构整体受力性能合理性,对桥梁建设施工标准化、规范化、精细化具有积极的推动作用。A bridge which is located in Chaoyang City has serious bridge diseases due to its long service life and more heavy traffic,and it has been closed to traffic.After expert review,the upper part of the bridge has been rebuilt.The steel-concrete composite beam design is adopted for the reconstruction scheme,and the strength,stiffness and stability of the hot rolled steel-concrete composite beam are calculated and verified.The high efficiency of the construction of the hot rolled steel-concrete composite beam and the rationality of the overall mechanical performance of the structure are verified according to the tracking feedback of the bridge operation after the reconstruction,which plays a positive role in promoting the standardization,normalization and refinement of bridge construction.

关 键 词：危桥改造 重载交通 热轧型钢-混凝土组合梁 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]