Prestressed reinforced steel construction process and steps prestressing steel reinforcement program can be divided into two types, one is directly attached to France, will anchor the ends and after prestressing by adhesive paste on the surface of steel structures; generally applicable to members relatively smooth surface of the rod, the component or partial reinforcement; the second is to adjust the beam as a prestressed cable stress, generally applies to the overall strengthening of the entire structure. 5.1 Selection: structure reinforced with carbon fiber for the main choice of PAN-based carbon fiber, the ultimate strength of up to 3500MPa, the elastic modulus of about 2.35 × 109MPa. Using epoxy resin system material. 5.2 Design: according to the mechanical characteristics of the structure to be repaired, the force transmission path and the stress - strain field, to determine the amount of fabric, size and laying direction. Fiber direction should be consistent with the maximum force trauma member orientation. If the lesion is in the complex stress state, the fiber orientation and stacking sequence should be consistent with the control of the main stress direction. 5.3 Embedded Prestressed tensioning: steel reinforcement particularity prestressing need a simple way, the traditional way of prestressing is often the first post-tensioned anchorage steel company, requires a relatively complex tensioning equipment , and the corresponding reaction force means. When the anchor, prestressing loss is relatively large. Prestressed tension embedded technology, which is characterized by the first post-tensioning anchor to members and former anchor itself as a steel tensioning force device without complicated tensioning equipment. Prestressed tension applied to the embedded technology can be divided into sub-prestressed, can produce an adhesive layer extrusion effect, improving the reliability of the paste. Meanwhile, due to the use after the first anchor tensioning technology, small prestressing loss, the method is simple and effective. Steel hypothetical question hypothetical restraint should note: In order to reduce steel welding deformation. Welds should be as symmetrical arrangement; not arbitrarily increase the weld thickness; the premise of ensuring safety of welds should not be too concentrated. Construction Control and Prevention. Prefabricated moral restraint, not segmented measurement; after the release of the steel wire size should be the amount of the full-length sub dimensions. Save the cumulative size. For members require a higher dimension, should put the line marked like red eyes. To ensure that the cutting edge of the cutting quality, 12mm below the board should try to mechanical cutting. When cutting with gas welding steel, steel specifications should be considered to extend the margin 2-3mm aside. Should be corrected; deformed steel beyond designated tolerance range. If the allowable value for the scale delineation of cold deformation correction and cold bending radius of curvature of the minimum and maximum bending vectors should be used to correct or use steel pressure jack homemade correct tools to perform cold correction, incident corrections. Style pattern shown in execution; or if the deformation of a steel member of a larger, -6