Analysis Of The Second Reinforcement Technology For T Structure Of Foshan Shet Bridge Crossing Foshan Waterway

In the late 1970 s to early 90 s,many long-span girder bridges were built in China.Among them,the prestressed T rigid frame bridge with hanging beams is one of the main bridge types.After years of use,a considerable number of such bridges have been damaged and reinforced for various reasons.However,with the explosive growth of the national economy and traffic volume,the disease which has been strengthened and operated for many years has been re-developed,affecting the safety of the bridge structure.It is necessary to reinforce the old bridge for the second time.Based on the case study of the disease continuing to develop during the operation of Xie Die Bridge across Foshan Waterway T structure(old bridge)after the first reinforcement in Nanhai District of Foshan City,this paper makes a detailed checking and Analysis on the various working conditions of Xie Die Bridge(old bridge)across Foshan Waterway T after the first reinforcement and the second reinforcement.It has great reference significance for developing the second reinforcement technology of T structure.