预应力加固法是采用外加预应力的钢拉杆(分水平拉杆、下撑式拉杆和组合式拉

The prestressed reinforcement method is a method for reinforcing the structure by using externally prestressed steel tie rods (three types of horizontal tie rods, lower brace tie rods and combined tie rods) or profile steel brace rods. <br>It can change the internal force distribution of the original structure and reduce its stress level without changing the space used, so that the bearing capacity of the structure can be improved. It is suitable for the reinforcement of large-span or heavy structures and the reinforcement of concrete components under high stress and high strain conditions. <br>This method is not applicable to the concrete structure under the temperature higher than 60 ℃, otherwise it should be protected, and it is not applicable to the concrete structure with large coagulation and shrinkage creep.

Pre-stress reinforcement is a method of reinforcing the structure with an additional pre-stressed steel lever (three horizontal levers, lower support levers and combined levers) or steel bouts.<br>It can change the internal force distribution of the original structure and reduce its stress level with little change of use space, so that the carrying capacity of the structure can be improved. It is suitable for the reinforcement of large-span or heavy-duty structures and the reinforcement of concrete components in high stress and strain conditions.<br>This method is not applicable to concrete structures with temperatures above 60 degrees C, otherwise protective treatment should be carried out, nor should it be suitable for concrete structures with coagulation and shrinkage.

The prestressed reinforcement method is to use the externally prestressed steel tie rod (divided into horizontal tie rod, bottom supporting tie rod and combined tie rod) or steel strut to reinforce the structure.<br>It can change the internal force distribution of the original structure and reduce its stress level, so that the bearing capacity of the structure can be improved. It is suitable for the reinforcement of large-span or heavy-duty structures and the reinforcement of concrete members under high stress and high strain.<br>This method is not suitable for the concrete structure under the temperature higher than 60 ℃, otherwise, it should be protected, and it is not suitable for the concrete structure with large concrete shrinkage and creep.<br>