Research on construction technology of concrete structures with delayed bonding prestressed frame beams
LEI Libing
MIN Xinzhe
Abstract：Taking a large public building project in Shijiazhuang,Hebei Province as an example,relevant materials and equip-ment were prepared according to construction requirements.By calculating key parameters such as the number of prestressed steel bars,cutting length,and concrete beam deflection,the construction sequence and process of the prestressed frame beam concrete structure with slow bonding were optimized.The quality of the construction results was further verified through compressive and tensile strength tests.The research results show that the optimized concrete structure can withstand a maximum pressure of 1000 N,with a tensile strength significantly lower than 5 MPa and a prestress loss of only 0.19 N,all of which meet the preset requirements.This indicates that the delayed bonding prestress technology can effectively improve the construction quality and performance of the prestressed frame beam concrete structure with slow bonding.
Keywords：delayed bonding prestressframe beamconcrete structureconstruction technologyprestress lossprocess optimization
Publication Date：2026-01-25
Online Publishing Date：2026-03-17(First online date of this platform, not the publication date of the document)
Pages：5( 103-107 )