摘要
超宽箱梁存在明显的空间效应,主要变现为各条腹板受力的不均衡和明显的剪力滞效应。为了研究空间效应对箱梁纵向受力的影响,以一联变幅超宽预应力混凝土连续箱梁为例,采用空间实体有限元模型进行了计算,分析了箱梁各条腹板的受力差异性和箱梁截面的剪力滞效应,得出了一些有益的结论,有关经验可供相关专业人员参考。
The super-wide box beam has the obvious space effect, mainly being the unbalanced and obvious shear lag effect of each web stress. In order to study the influence of space effect on the longitudinal stress of box beam, the article uses the space solid finite element model to calculate and analyze the stress difference of each web and the shear lag effect of section of box beam by the one-joint variable super-widepre-stressed concrete continuous box beam so as to give some beneficial conclusions. The relative experience can be referenced for the similar projects.
出处
《城市道桥与防洪》
2015年第8期37-39,8-9,共3页
Urban Roads Bridges & Flood Control
关键词
宽箱梁
空间效应
剪力滞
wide box beam,space effect,shear lag
