|
|
|
| Deflection Analysis of Concrete Composite Beam with Corrugated Steel Web and Steel Base Plate |
| LIU Shizhong1, CAI Minghao1, MAO Yana1, MA Jianhong2, QIN Aoao3, WANG Lijuan1 |
1. Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China;
2. Shandong Luqiao Engineering Design Consulting Co. Ltd, Jinan, Shandong 250000, China;
3. Zaozhuang University, Zaozhuang, Shandong 277160, China |
|
|
|
Abstract Research purposes: In order to accurately analyze the deflection change of the waveform steel web and steel base plate concrete composite beams under long-term loading, on the basis of incorporating the effects of sheardeformation effect, shear hysteresis effect and shrinkage creep effect of the composite beams on the calculation of deflection, the control differential equations of the waveform steel web and steel base plate concrete composite beams and the natural boundary conditions were derived by using the energy variational method, and the formula for the deflection calculation of the waveform steel web and steel base plate concrete composite simply-supported single-box and double-compartment box beams were obtained. The deflection formulas of the box girder under centralized load at mid-span and uniform load at full span were obtained, The deflection values at 7 d, 1 000 d and 3 650 d were calculated by using the obtained formulas, which were compared with the numerical solution of ANSYS and the calculated values without considering shrinkage and creep effects, and verified by the results of the model test.
Research conclusions: (1) The deflection values in this paper are in good agreement with the ANSYS numerical solution and model test results. (2) The deflection of corrugated steel web steel base plate concrete combined simplysupported box girder increased by 9.12% and 12.94% after 1 000 d of centralized load in the span and full-span uniform load, respectively. (3) The deflection in the span increased by 14.69% and 18.32% after 3 650 d. It is obvious that the effect of shrinkage creep on the deflection calculation of the combined box girder cannot be ignored. (4) This paper provides references for the deflection calculation in the design of the corrugated steel web plate.
|
|
Received: 23 May 2022
|
|
|
|
|
|
| [1] |
吴文清, 万水, 叶见曙, 等. 波形钢腹板组合箱梁剪力滞效应的空间有限元分析[J]. 土木工程学报, 2004(9): 31-36.Wu Wenqing, Wan Shui, Ye Jianshu, etc. 3-D Finite Element Analysis on Shear Lag Effect in Composite Box Girder with Corrugated Steel Web[J]. China Civil Engineering Journal, 2004(9): 31-36.
|
| [2] |
马驰,刘世忠,陈权,等.改进型波形钢腹板组合箱梁的动力特性分析[J].铁道工程学报,2019(11):30-37.Ma Chi,Liu Shizhong,Chen Quan,etc. Dynamic Behavior Analysis of Improved Composite Box Girder with Corrugated Steel Webs[J]. Journal of Railway Engineering Society,2019(11):30-37.
|
| [3] |
卫星,杨世玉.单箱双室波形钢腹板PC箱梁剪力滞效应分析[J].铁道工程学报,2017(3):29-33.Wei Xing, Yang Shiyu. Research on the Shear-lag Effect in Twin-cell PC Box-girder with Corrugated Steel Web[J]. Journal of Railway Engineering Society, 2017(3):29-33.
|
| [4] |
柳兴成, 蔺鹏臻, 何志刚. 考虑全截面剪切变形效应的波形钢腹板箱梁挠度计算[J]. 公路交通科技, 2019(1): 63-69.Liu Xingcheng, Lin Pengzhen, He Zhigang. Deflection Calculation of Box Girder with Corrugated Steel Web Considering Full-section Shear Deformation Effect[J]. Journal of Highway and Transportation Research and Development, 2019(1): 63-69.
|
| [5] |
邱文亮, 姜萌, 张哲. 钢-混凝土组合梁收缩徐变分析的有限元方法[J]. 工程力学, 2004(4): 162-166.Qiu Wenliang, Jiang Meng, Zhang Zhe. Finite Element Method for Shrinkage and Creep Analysis of Steel-concrete Composite Beams[J].Engineering Mechanics, 2004(4): 162-166.
|
| [6] |
钱寅泉, 倪元增. 箱梁剪力滞计算的翘曲函数法[J]. 铁道学报, 1990(2): 57-70.Qian Yinquan, Ni Yuanzeng. Warping Function Method for Calculation of Shear Lag of Box Girder[J]. Journal of the China Railway Society, 1990(2): 57-70.
|
|
|
|
2023, Vol. 40 
