PCCP pipe structure and production method

• Main Authors: FAN XIANGQIAN, LU JUN, WANG TAO, ZHANG LEI, LIU JUEDING
• Format: Patent
• Language: Chinese; English
• Published: 23.01.2024
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING CEMENT, CLAY, OR STONE

The invention relates to the technical field of prestressed concrete cylinder pipes, and discloses a PCCP pipe structure and a production method, the PCCP pipe structure comprises a concrete inner layer, a steel cylinder body, a first mortar protection layer, a concrete outer layer, a second mortar protection layer and a coating which are sequentially arranged from inside to outside; the first pre-stress structure comprises a plurality of first pre-stress pieces, and the first pre-stress pieces are wound on the concrete outer layer in the axial direction and located in the second mortar protection layer; the second pre-stress structure comprises a plurality of second pre-stress pieces, and the second pre-stress pieces are distributed on the steel cylinder body in the axial direction and extend into the concrete inner layer; the first prestress part and the second prestress part cooperate to form prestress resultant force on the steel cylinder body. The problems that under the condition of overall arrangement