Comprehensive Construction Technology Of U-shaped Beam In Urban Rail Transit Application

With the rapid development of urban rail transit engineering, U-shaped beam line, more and more used in viaduct U-shaped beam structure is novel, section size and changeful, construction technology is more complicated. For construction projects is relatively small, lack of construction experience, U-shaped girder construction technology for prefabrication, transportation and erection, require special study, further ascension.This paper takes Qingdao blue silicon valley track traffic engineering based on 2# beam field, from the perspective of the construction, fully tap the construction details, combining with the nanjing subway line 2, Shanghai metro line 16 and engineering example, from the perspective of the construction, through some test, comprehensive summary, superior, to determine the optimal U-shaped beam system, transport, construction plan.Construction equipment directly decision taken by the construction scheme, construction as far as possible choose safe and reliable with advanced technology, equipment, by raising the degree of mechanization operation, reduce the manual operation, improve the quality of engineering. Especially U beam system, shipment, operation, high technical content, strong professional, choosing the appropriate machinery and equipment, get twice the result with half the effort.2# beam field is studied in detail the construction of the automatic production line for steel, full hydraulic internal model, intelligent tensioning system machine,250 t tyred girder are settled, special roads bulk carriers, double guide beam, etc.The main content of this article is:Firstly, combining with the actual situation, determine the u-shaped beam field of planning and design. Put forward beam prefabricated deposit beam the same layout, system design, equipment configuration, arrangement of temporary facilities for different conditions by using the field construction reference beams.Secondly, U-shaped beam precast technology research:steel processing automatic production line of research, the design of the hydraulic template and dismantling of concrete construction technology, intelligent tensioning system research, bridge floor removed technology, beam body appearance quality control, the winter construction technology, etc.Thirdly, transport, and frame construction technology research:luck, frame beam equipment selection, the bridge transportation scheme on road and bridge, bridge frame beam, transport, safety technical measures in the process of the girder.