contributor author | Zhou Guangpan;Li Aiqun;Li Jianhui;Duan Maojun;Spencer Billie F.;Zhu Li | |
date accessioned | 2019-02-26T07:38:27Z | |
date available | 2019-02-26T07:38:27Z | |
date issued | 2018 | |
identifier other | %28ASCE%29BE.1943-5592.0001297.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4248443 | |
description abstract | The paper presents a new formulation of a beam finite element for the time-dependent analysis of self-anchored suspension bridges, considering the shear lag in a multicell concrete box girder. The beam kinematics are deduced using a displacement-based approach. Warping of the girder section is captured with a warping intensity function representing the warping magnitude along the girder axis and a series of segmental shape functions describing the warping shape of the asymmetrical multicell box section, which is deduced based on shear flow transmission. A three-dimensional 14 degree-of-freedom (dof) beam finite element employing hermitian polynomials to ensure consistent displacement interpolation is proposed. The proposed beam element is implemented in ANSYS as a user-defined element. The convergence test results and comparisons with the refined analyses using a solid finite-element model demonstrate the accuracy of the proposed element. Time-dependent behavior of concrete is calculated using the B3 prediction model and the age-adjusted elastic modulus method. The moment estimation method is adopted to conduct the random analysis, which yields the 95% confidence limits of the structural responses obeying approximately the normal distribution. Application to a full-scale bridge structure shows the efficiency and accuracy of the proposed method and its ability to describe the elastic and time-dependent behavior of a self-anchored suspension bridge with extra-wide concrete girders. | |
publisher | American Society of Civil Engineers | |
title | Beam Finite Element Including Shear Lag Effect of Extra-Wide Concrete Box Girders | |
type | Journal Paper | |
journal volume | 23 | |
journal issue | 11 | |
journal title | Journal of Bridge Engineering | |
identifier doi | 10.1061/(ASCE)BE.1943-5592.0001297 | |
page | 4018083 | |
tree | Journal of Bridge Engineering:;2018:;Volume ( 023 ):;issue: 011 | |
contenttype | Fulltext | |