钢箱梁斜拉桥UHPC桥面铺装摊铺顺序研究

Study on paving sequence of UHPC deck of steel box girder cable-stayed bridges

以胜利黄河大桥维修改造工程为例,采用桥梁分析软件Midas/Civil建立有限元模型,计算桥面铺装施工过程中桥梁各构件受力状态,分析施工方案的可行性,对主梁变形及索力进行研究,关注索力及变形的不对称情况,并对部分斜索施工过程中的变化情况进行对比。结果表明,两种方案均可行,两幅同步摊铺更适用于旧桥维修改造工程。

Taking the maintenance and reconstruction project of Shengli Yellow river bridge as an example,this paper uses the bridge analysis software Midas/Civil to establish the finite element model to calculate the stress state of each component of the bridge during the construction of bridge deck pavement, so as to analyze the feasibility of the construction scheme. Then it studies the deformation and cable force of the main beam, focuses on the asymmetry of cable force and deformation, and compares the changes of some inclined cables during construction. The results show that both schemes are feasible, and two synchronous paving is more suitable for the maintenance and reconstruction of old bridges.