Internal strengthening and reinforcing method and strengthening combined structure for PCCP (prestressed concrete cylinder pipes) with broken wires

The invention discloses an internal strengthening and reinforcing method for PCCP (prestressed concrete cylinder pipes) with broken wires. The internal strengthening and reinforcing method includes steps of A, preparing DXE elastic materials and carbon fiber sheet materials according to construction designs; B, checking, repairing and flattening the inner surfaces of concrete pipe cores of the PCCP, thoroughly cleaning the repaired inner surfaces of the concrete pipe cores and drying the inner surfaces of the concrete pipe cores. The internal strengthening and reinforcing method for the PCCP with the broken wires has the advantages that characteristics of the various materials are sufficiently utilized, excavation along the outsides of pipelines can be omitted, the construction method is simple, convenient and speedy, the investment can be saved, excellent seepage prevention effects can be realized, the PCCP are good in abrasion resistance, and the internal strengthening and reinforcing method is nontoxic and