钢束对空心板桥梁横向分布系数的影响

Influence of Steel Bundles on Transverse Distribution Coefficient of Hollow Slab Bridge

摘要:

空心板梁桥的横向分布系数对其结构设计至关重要，常规计算中不计入钢束对其影响。鉴于钢束会提高板梁的竖向刚度，研究了钢束对空心板梁桥横向分布系数的影响。以一跨有19片空心板梁为例，基于迈达斯（Midas Civil）建立桥梁上部结构的梁格模型；对空心板钢束的数量进行适当调整，通过跨中挠度求解移动荷载的横向分布系数，并与桥博计算结果进行对比，得出相关结论。

Abstract:

The transverse distribution coefficient of hollow slab bridge is very important to its structural design. The influence of steel bundles is not included in the conventional calculation. In view of the steel bundles able to improve the vertical stiffness of plate girder, the influence of steel bundles on the transverse distribution coefficient is studied. Taking a one-span 19-hollow-slab girder as an example, based on Midas Civil, the grillage model of bridge superstructure is established. The number of steel bundles of hollow slab should be adjusted appropriately. The transverse distribution coefficients of moving load are solved through the mid-span deflection. And compared with the calculation result of Hasbro, the relevant conclusion is obtained.