Comparative experimental study of the influence of steel strand tensioning process on the strand force uniformity in steel strand stay cables

With the advantages of convenient installation and good economy, steel strand cables have been widely used in cablestayed bridges in recent years. However, due to the on-site tensioning, the tensioning process has an obvious impact on the stress uniformity of each steel strand inside the stay cable, and the stress uniformity of the steel strand inside the stay cable is an important factor affecting the overall performance of the stay cable. Therefore, the tensioning process is an important part of the construction process of parallel steel strand stay cable. In this paper, the main factors affecting the internal cable force uniformity of steel strand stay cable are studied through the comparative test of two different cable tensioning processes. Combined with the test results, the methods to improve the cable force uniformity of steel strand stay cable are discussed, which can be used as a reference for relevant technicians.