桥梁冬期施工混凝土配合比试验及施工技术研究  

Study on Concrete Mixture Proportion Test and Bridge Construction of Bridge Technology in Winter

作　　者：柳静 LIU Jing(China Railway 16th Bureau Group First Engineering Co. , Ltd. , Beijing 101399, China)

机构地区：[1]中铁十六局集团第一工程有限公司,北京101399

出　　处：《施工技术》2018年第8期62-65,共4页Construction Technology

摘　　要：寒冷地区现浇箱梁桥所处的环境会影响和改变整桥施工方案的选择与实施,同时低温环境会明显增加桥梁施工的难度,而针对此类工程在设计和施工中还存在很多亟待解决的问题。结合京石七标段桥梁现浇箱梁混凝土冬期施工实例,对不同配合比混凝土的工作性能进行试验分析,从而给出指导施工的最佳配合比。此外,对桥梁冬期施工的施工原理、混凝土的保温养护等方面进行详细介绍,进而总结出在低温环境条件下进行现浇梁施工的质量管理和控制措施。The environment of the cast-in-place girder bridge in cold regions will affect and change the selection and implementation of bridge construction plans, at the same time, the low temperature environment will obviously increase the difficulty of bridge construction,however there are still many problems should to be solved in the design and construction of such projects. Based on the winter concrete construction example of cast-in-place box girder of bridges in Jingshi VII,this paper analyzes the workability of concrete with different mix proportions,and then gives the best mix proportion for guiding the construction. In addition,construction principles,thermal insulation of concrete and so on are elaborated,further,quality management and control measures for cast-in-place girder construction under low-temperature environmental conditions are summarized.

关 键 词：桥梁工程 混凝土 配合比 现浇箱梁 试验 施工技术 质量控制 

分 类 号：U444[建筑科学—桥梁与隧道工程] U445[交通运输工程—道路与铁道工程]