乌奎高速公路改扩建工程桥梁拼接方案研究  

Research on Bridge Splicing Scheme of Urumqi-Kuitun Expressway Reconstruction and Expansion Project

作　　者：程宇飞 CHENG Yufei(Xinjiang Uygur Autonomous Region Transportation Planning and Design Institute,Urumqi 830006)

机构地区：[1]新疆维吾尔自治区交通规划勘察设计研究院,乌鲁木齐830006

出　　处：《公路交通技术》2020年第3期59-65,71,共8页Technology of Highway and Transport

摘　　要：在连霍高速(G30)新疆境内乌奎屯高速公路改扩建工程中,为解决桥梁结构物拼接设计,正确理解和运用新、旧规范,确保拼宽后桥梁整体结构的使用性能,以85版、04版规范为依据,对老桥承载能力,新、老基础差异沉降,混凝土徐变变形差和汽车荷载作用下拼接部位受力状况等方面进行分析,提出影响结构物拼接加宽的控制性因素、影响程度、控制指标及对策措施,结果表明,新、老桥梁的拼接加宽方案切实可行。In order to solve the bridge structure splicing design and use new and old codes properly to ensure the use performance of the whole structure of the bridge after splicing in the reconstruction and expansion project of Urumqi-Kuitun highway of Lianyungang-Khorgos Expressway(G30)in Xinjiang,this article analyzed the bearing capacity of the old bridge,the settlement difference of the new and old foundation,the deformation difference of the concrete creep and the bearing condition of the splicing part under the vehicles loading based on the new 2004 code and the old 1985 bridge code.Controlling factors,influencing degree,controlling index and countermeasures influencing structure splicing and widening.The results show that plan of the splicing and widening of the new and the old bridges in this design scheme is feasible and appropriate.

关 键 词：乌奎高速改扩建 桥梁拼接 结构验算 基础差异沉降 徐变变形 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]