空心板荷载横向分布影响因素分析

Influencing Factors on Lateral Distribution of Hollow Slab Loads

空心板设计过程中,理论假定板与板之间是通过铰缝传递剪力而使得桥面板范围内各片梁板达到整体承担荷载的目的。桥面铺装由于厚度有限,刚度相对梁体较小,工程设计计算中往往不考虑其对主梁受力的贡献。而大量的研究表明,桥面铺装及铰缝对空心板荷载横向分布均具有较大影响。本文对桥面铺装及铰缝状态对空心板横向分布系数的影响做了细化分析,以供广大同人参考与借鉴。

In the design process of hollow slabs,the theory assumes that the shear force is transmitted between the slabs through hinge joints,so that the beams and slabs in the bridge deck can bear the overall load.Due to the limited thickness of the bridge deck,its stiffness is relatively small compared to the beam body,and its contribution to the main beam force is often not considered in engineering design calculations.A large number of studies have shown that bridge deck pavement and hinge joints have a great influence on the lateral distribution of hollow slab loads.In this paper,a detailed analysis of the influence of the bridge deck pavement and hinge joint state on the lateral distribution coefficient of the hollow slab is made for the reference of the majority of colleagues.