Intelligent reinforcing support for reinforced concrete low-box girders and method for mimimally invasive reinforcement

A smart reinforcement support and slight-damage reinforcement method for a reinforced concrete low-box girder. The smart reinforcement support is composed of a first main body (16), a second main body (9), one-way rotary supporting structures, a one-way lifting structure, and a control device, wherein the first main body (16) and the second main body (9) are arranged vertically, the first main body (16) is used to transfer a load from a bridge deck to the second main body (9), the second main body (9) is used to transfer the load to a bottom plate, a lower portion of the first main body (16) is inserted into the second main body (9), and the lower portion of the first main body (16) cooperates with the second main body (9) by means of the one-way lifting structure; and an outer ring of an upper portion of the first main body (16) and an outer ring of the second main body (9) are each provided with the one-way rotary supporting structure and an instant lock (10) which can cooperate with each other, the instant lock (10) being connected to a lock catch (3) of the corresponding one-way rotary supporting structure, and the instant lock (10) communicating with the control device. After the instant locks (10) receive an instruction, the instant locks (10) are unlocked from the lock catches (3), and then a supporting rod (2) of the first main body (16) moves upwards, and a supporting rod (2) of the second main body (16) moves downwards.