基于能量法单索面斜拉桥宽箱梁剪力滞效应分析
Study on Shear Lag Effect of Wide Box Girder Based on Energy Method in Single-Cable-Plane Cable-Stayed Bridge
摘要:
本文对单索面斜拉桥在弯矩和轴力作用下箱梁剪力滞效应进行分析,以济南某黄河公路大桥为例,运用能量法得到恒载剪力滞计算公式,方便实用,理论计算结果与实体有限元模型计算结果吻合良好,结果显示单索面斜拉桥宽箱梁剪力滞效应比较大,设计时应予以高度重视。
Abstract:
Box beam shear lag effect of single-cable-plane cable-stayed bridge under bending moment and axial force is analyzed in this paper. Taking one Yellow River Bridge in Jinan as an example, the formula of shear lag under dead load has been set up using the Energy Variation Method. It is convenient and practical. The theoretical calculation results are in good agreement with those obtained in the solid finite element model. The results show that the shear lag effect of single-cable- plane cable-stayed bridge with wide box girder is bigger. It should be highly valued in the design.
参考文献
[1]
|
张启伟, 张士铎. 单索面斜拉桥箱梁恒载剪力滞效应分析[J]. 中国公路学报, 1997, 10(1): 39-43.
|
[2]
|
周世军, 杨子江. 考虑集中弯矩作用的箱梁剪力滞分析有限梁单元[J]. 铁道学报, 2010, 32(3): 90-94.
|
[3]
|
黄刚. 超宽单箱单室箱梁剪力滞效应分析[J]. 公路交通技术, 2010, 8(4): 56-58.
|
[4]
|
刘沐宇, 袁卫国, 孙文会, 孙向东. 单索面宽幅矮塔斜拉桥拉索作用下主梁剪力滞效应分析[J]. 武汉理工大学学报(交通科学与工程版), 2010, 34(6): 1162-1166.
|
[5]
|
曹国辉, 方志. 变分原理分析开裂简支箱梁剪力滞效应[J]. 计算力学学报, 2007, 24(6): 853-864.
|
[6]
|
曹国辉, 方志. 变分原理分析连续箱梁开裂后的剪力滞效应[J]. 计算力学学报, 2007, 24(4): 75-80.
|