Simplified prestress test method for obtaining test parameters in engineering structure

• Main Authors: BAI HUAJUN, XU JING, LIU YONGLI, LIU ZHIJIE, XUE TIANTIAN, XIAO HENGLIN, ZHU ZHIZHENG, XI MINGYANG
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2022
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a simplified pre-stress test method for acquiring test parameters in an engineering structure, which comprises the following steps of: firstly, selecting a pre-stress pipeline of a typical beam slab according to an engineering scale, and collecting the arrangement of pre-stress steel bundles and pipeline parameters of the pre-stress pipeline; then, a tensioning device is built, double-end grading tensioning is conducted on the prestressed steel beam, tensioning force at the two ends of the steel beam and the elongation of the prestressed steel beam are read and recorded, an equation is built to assume the center point of the steel beam, and calculation is conducted according to an algorithm; and final tensioning is completed according to the predicted value. The double-end tensioning algorithm replaces a traditional friction resistance experiment single-end tensioning method, so that a double-end tensioning friction resistance experiment is achieved; single-end tensioning is changed in