公开(公告)号：US11579038B2

公开(公告)日：2023-02-14

申请号：US17098475

申请日：2020-11-16

Applicant: University of Science and Technology Beijing

Inventor： Yi Zhou

IPC: G01M5/00 ,  G06F30/20 ,  G06F111/10

Abstract: A method for calculating a temperature-dependent mid-span vertical displacement of a girder bridge includes: setting a joint rotation of a main girder at each support as an unknown quantity, and establishing an equation according to a bending moment equilibrium condition at the joint; then introducing a sequence to establish a quantitative relationship between each unknown quantity; substituting the relationship into the equation, to obtain an analytical formula for a rotation at each joint; establishing an analytical formula for a bending moment at each joint through a principle of superposition; and finally, establishing an analytical formula for a mid-span vertical displacement of each span girder through a principle of virtual work. This method provides an analytical formula with exact solutions for prismatic girder bridges which have equal side spans yet have any number of spans.