A three-parameter combined-power model was proposed by curve fitting of the test data recording from the pullout trots on shaft anchor used in different geotechnical engineering. The representation of the parameters was also discussed. The two-parameter combine-power function model for prestress tendon was derived. The method to determine the bounded length from the degenerate model and the suggested value of its parameter G were also proposed. It was pointed out that the bounding length calculated from the average stress method was not safe enough.
Journal of Wuhan University of Technology
prestressed anchoring rope