公开(公告)号：US20220127802A1

公开(公告)日：2022-04-28

申请号：US17355466

申请日：2021-06-23

Applicant: South China University of Technology

Inventor： Niujing Ma ,  Ronghui Wang ,  Long Piao

IPC: E01D19/12 ,  E01D2/04 ,  G01L1/00

Abstract: A combined plate-beam unit analysis method considering a residual stress effect of an orthotropic plate, which is used for analyzing an orthotropic steel bridge deck welded by a top plate of a bridge deck and a trapezoidal rib, the top plate of the bridge deck is analyzed by a flat shell unit, while each sub-plate forming a trapezoidal rib is analyzed by a plate-beam unit. The welding residual stress of a top plate and a trapezoidal rib is obtained by a residual stress self-balancing condition, and the initial deformation of a top plate and left and right web plates of a trapezoidal rib is obtained by the stress-strain relationship. The combined plate-beam unit analysis method has the advantages of less freedom and high calculation accuracy, so it is especially suitable for structural analysis of the trapezoidal rib orthotropic plates.

公开(公告)号：US12129610B2

公开(公告)日：2024-10-29

申请号：US17355466

申请日：2021-06-23

Applicant: South China University of Technology

Inventor： Niujing Ma ,  Ronghui Wang ,  Long Piao

IPC: E01D19/12 ,  E01D2/04 ,  G01L1/00

CPC classification number: E01D19/125 ,  E01D2/04 ,  G01L1/00

Abstract: A combined plate-beam unit analysis method considering a residual stress effect of an orthotropic plate, which is used for analyzing an orthotropic steel bridge deck welded by a top plate of a bridge deck and a trapezoidal rib, the top plate of the bridge deck is analyzed by a flat shell unit, while each sub-plate forming a trapezoidal rib is analyzed by a plate-beam unit. The welding residual stress of a top plate and a trapezoidal rib is obtained by a residual stress self-balancing condition, and the initial deformation of a top plate and left and right web plates of a trapezoidal rib is obtained by the stress-strain relationship. The combined plate-beam unit analysis method has the advantages of less freedom and high calculation accuracy, so it is especially suitable for structural analysis of the trapezoidal rib orthotropic plates.