Analysis of Prestressing Tendon Complementary Tensioning Process and Batch Optimization Control
By analyzing the prestress loss in batch complementary tensioning of steel bars,the formula for calculating prestress loss in first tensioning and complementary tensioning is derived.The quality control requirements for tensioning the whole prestressing tendons and batch prestressing tendons are investigated from both force and deformation perspectives,and the stress conditions of the two are compared.It is concluded that for each prestressing tendon in the prestressing bundle,regardless of whether the sizes are the same or different,after batch tensioning,the whole actually either belongs to the under-tensioned state or the over-tensioned state,and there are large limitations in batch tensioning of prestressing tendons.The mathematical model of prestressing tendon batch complementary tensioning process is established,and a reinforcement learning based optimal control theory of complementary tensioning is proposed to achieve a more accurate complementary tensioning effect with less number of batch complementary tensioning processes.
prestresscomplementary tensionforce analysismathematical modeloptimal control
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