How to choose the appropriate structural reinforcement method? such as enlarging section method, steel jacketing, epoxy bonded steel plate,  carbon fiber reinforced polymer(CFRP).

Through the structure calculation, combined with the structure features, choice of carbon fiber fabric with less difference in tensile bearing capacity of tension member(because no anchorage), and less than 40% with epoxy bonded steel plate, greater than 40% with steel jacketing or additional beam; when the component checking section insufficient with increase section.