公开(公告)号：US20210181056A1

公开(公告)日：2021-06-17

申请号：US16790689

申请日：2020-02-13

Applicant: University of Science and Technology Beijing

Inventor： Yi ZHOU

IPC: G01M5/00 ,  G01L5/102 ,  G01K13/04 ,  G01K3/12

Abstract: A method for determining the temperature-induced sag variation of the main cable and the tower-top horizontal displacement of suspension bridges takes the sag variation and the span variation of each span of the main cable as the unknown quantities. By using the horizontal tension equilibrium at the tower top, the geometric relationship between the shape and the length of the main cable, and the compatibility condition to be satisfied by the sum of spans of each span of the main cable, a linear system of equations is constructed. The linear system of equations is solved to obtain the temperature-induced sag variation of the main cable and the tower-top horizontal displacement of the suspension bridge. This method can be extended to the temperature deformation analysis of the other cable systems with any number of spans such as transmission lines, ropeways, and the like.