公路桥梁施工养护及加固维修技术分析  

Analysis on the technical analysis of highway and bridge construction maintenance and reinforcement maintenance

作　　者：谢晟德 Xie Shengde(Qinghai Hainan Tianhe Road and Bridge Engineering Co.,Ltd.,Hainan Tibetan Autonomous Prefecture 813099,China)

机构地区：[1]青海省海南天和路桥工程有限公司,海南藏族自治州813099

出　　处：《青海交通科技》2024年第4期141-145,共5页Qinghai Transportation Science and Technology

摘　　要：由于青海省独特的地理位置和气候条件,公路桥梁的建设和维护面临诸多挑战。高海拔、寒冷气候、强紫外线和频繁的冻融循环对桥梁结构产生了极大的影响。这些环境因素不仅加速了桥梁的老化和损坏,还对桥梁的施工和养护提出了更高要求。因此,探索适应青海地区气候条件的桥梁施工和养护技术变得尤为重要。本文详细探讨了青海地区公路桥梁施工、养护及加固维修的技术方法。首先,在施工技术方面,分析了高海拔地区的施工挑战,包括空气稀薄对施工人员和机械设备的影响,以及昼夜温差大对混凝土浇筑和养护的要求。其次,提出了抗冻融措施,强调使用高抗冻等级的混凝土和引气剂,并加强混凝土的保温和养护。在耐久性设计方面,提出了合理设计排水系统、选用耐腐蚀材料和增强抗震性能的措施。本文总结的养护及加固维修技术可为类似工程提供参考。Because of its unique geographical location and climatic conditions,the construction and maintenance of highway Bridges in Qinghai Province faces many challenges.High altitude,cold climate,strong ultraviolet light and frequent freeze-thaw cycles have a great impact on the bridge structure.These environmental factors not only accelerate the aging and damage of bridges,but also put forward higher requirements for the construction and maintenance of bridges.Therefore,it is particularly important to explore the bridge construction and maintenance technology suitable for the climatic conditions in Qinghai.This paper discusses in detail the technical methods of highway bridge construction,maintenance,reinforcement in Qinghai area.First,in terms of construction technology,the construction challenges at high altitudes are analyzed,including the impact of thin air on construction personnel and mechanical equipment,and the requirements of large temperature differences between day and night on concrete pouring and maintenance.In addition,freeze-thaw resistance measures are put forward,emphasizing the use of high anti-freezing grade concrete and air entrainment agents,and strengthening the insulation and maintenance of concrete.In the aspect of durability design,the measures of rational design of drainage system,selection of corrosion-resistant materials and enhancement of seismic performance are put forward.The maintenance and reinforcement technology summarized in this paper can provide reference for similar projects.

关 键 词：青海省 桥梁施工 养护技术 加固维修 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]