Study On The C-S-C Combination Method For Reinforcement Of Long Span Stone Arch Bridge

In this paper,the reinforcement design principle,structural detail,calculation method of cross-section bearing capacity and construction technology of C-S-C method for strengthening the long-span stone arch bridge were studied.The main work of this paper is as follows:(1)On the basis of the C-S-C composite reinforced stone arch bridge,improving the new channel reinforced concrete arch ribs on both sides of the original arch of the original stone,and made the reinforced concrete reinforced by adopting the multi-channel transverse connection on the top and bottom of the original arch Tectonic Design of C-S-C(Reinforced Concrete-Stone Masonry-Reinforced Concrete)Composite Structure with arch rib and original stone main arch;(2)The calculation method of the ultimate bearing capacity of C-S-C composite section with rectangular rectangular section and channel reinforced concrete was discussed,and three kinds of failure modes which may occur due to secondary load were analyzed.Meanwhile,the calculation method of ultimate bearing capacity of combined section was researched.(3)This paper discussed the construction technology of C-S-C composite reinforcement method to strengthen the construction technology of stone arch bridge and the measures to ensure the quality and safety of construction.The protection method was discussed from the aspects of management and construction monitoring,and the necessity and effectiveness of guaranteeing the method of reinforcement and reconstruction of Yuduo River Bridge;the reasons and consequences of problems encontered in the reinforcement of the construction process were analysed,and reasonable and feasible recommendations were put forward.