Analysis on the torsion effect of box girders with corrugated steel webs considering local longitudinal stiffness of webs

被引：0

作者：

Zhang Y. ^{[1
]}

Sun C. ^{[1
]}

机构：

[1] School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2021年 / 51卷 / 02期

关键词：

Box girder with corrugated steel webs; Generalized sectorial coordinate; Local stiffness of webs; Restrained torsion; Warping normal stress;

D O I：

10.3969/j.issn.1001-0505.2021.02.002

中图分类号：

学科分类号：

摘要：

In order to analyze the restrained torsion effect of composited box girders with corrugated steel webs more reasonably, the restraining effect of top and bottom plates on the corrugated steel webs is considered. The concept of the common bending section of corrugated steel webs is introduced. Considering the accordion effect, an analytical method for analyzing the torsion effect is proposed. Introducing a new generalized sectorial coordinate distribution model, the calculation formula of restrained torsion warpage stress is deduced based on the second theory of Umanskii. Through a numerical example, the differences among the results of the proposed method, the traditional method and ANSYS finite element method are analyzed. The reasonable height of the common bending section is determined, and the correctness of the derived formula is verified. The results show that the calculation results after considering the restraining effect of the top and bottom plates on the corrugated steel webs are closer to the finite element analysis results compared with the traditional method, and the results are in good agreement with the finite element results. The normal stress in the common bending section can reach the bending normal stress level, showing that it is necessary to consider the restraint effect of top and bottom plates on corrugated steel webs in the analysis of restrained torsion of box girders with corrugated steel webs. © 2021, Editorial Department of Journal of Southeast University. All right reserved.

引用

页码：195 / 201

页数：6

共 18 条

[1] Zhu Y B, Wan S, Shen K J, Et al., Modified rotating-angle softened truss model for composite box-girder with corrugated steel webs under pure torsion, Advances in Structural Engineering, 23, 9, pp. 1902-1921, (2020)
[2] Shen K J, Wan S, Jiang Z W, Et al., Whole process analysis on pure torsional behavior of concrete composite box girders with corrugated steel webs, Journal of Southeast University (Natural Science Edition), 47, 1, pp. 112-117, (2017)
[3] Li L F, Zhou C, Wang L H., Distortion analysis of non-prismatic composite box girders with corrugated steel webs, Journal of Constructional Steel Research, 147, pp. 74-86, (2018)
[4] Zhao H, Gou H Y, Ni Y S, Et al., Reinforcement design of the top and bottom slabs of composite box girder with corrugated steel webs, Steel and Composite Structures, 33, 4, pp. 537-550, (2019)
[5] Tsiptsis I N, Sapountzakis E J., Generalized warping and distortional analysis of curved beams with isogeometric methods, Computers & Structures, 191, pp. 33-50, (2017)
[6] Li H J., Experimental study and analysis on torsion and distortion of box girder with corrugated steel webs, (2003)
[7] Qiao P, Di J, Qin F J., Warping torsional and distortional stress of composited box girder with corrugated steel webs, Mathematical Problems in Engineering, 2018, pp. 1-13, (2018)
[8] Yang B W, Li Y L, Wan S, Et al., Stress analysis of box girder with corrugate steel webs under torsion, Journal of South China University of Technology (Natural Science Edition), 40, 2, pp. 19-22, (2012)
[9] He J, Liu Y Q, Wang S H, Et al., Experimental study on structural performance of prefabricated composite box girder with corrugated webs and steel tube slab, Journal of Bridge Engineering, 24, 6, (2019)
[10] Ma L, Wan S, Jiang Z W., Research on torsion and distortion performance of single box double-cell girder with corrugated steel webs, China Journal of Highway and Transport, 29, 10, pp. 77-85, (2016)

← 1 2 →