In order to solve the problems of the difficulty of transporting and erecting small curved box girder and the easy overturning and poor stability of the traditional bridge erecting machine,the integrated mechanism of rotary and transverse movement is equipped at the top of the front leg of the traditional bridge erecting machine,so as to meet the needs of the erection of curved box girder and the passing hole of the bridge erecting machine,and the construction technology of transporting and erecting precast box girder of small curved high-speed railway is formed.Based on the high-precision sensing equipment,the safety monitoring system of the bridge erecting machine is constructed,and the dynamic monitoring and analysis of the box girder erection process are carried out.The results show that the bridge erecting machine has strong stability and safety reserve during the erection of prefabricated box girder.The horizontality of the legs is stable within 5‰,and the stress of the legs is less than the allowable stress,which meets the requirements of the specification.The rapid and safe integrated operation of prefabricated box girder of small curve high-speed railway is realized,which can provide some reference for similar projects.
关键词
小曲线/易倾覆/一体化机构/运架施工技术/安全监测系统
Key words
Small curve/Easy to capsize/Integrated institutions/Transport frame construction technology/Safety monitoring system
维普
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