下承式钢桁架拱肋施工技术优化分析

Optimization Analysis of Construction Technology for Through Steel Truss Arch Rib

摘要:

亭枫公路桥工程为主桥下承式连续钢桁架拱桥，采用分离式两幅桥布置。主桥的上部结构主要采用钢结构，钢结构的加工、制作、运输和安装难度大，其质量控制直接关系到整座桥梁的安全。因此，合理的施工方法决定了桥梁的施工进度和施工安全性。通过有限元模型的计算结果比较不同施工方法在下承式拱桥施工过程中对拱肋的影响，比较不同施工方法在结构效应、施工成本等方面的优缺点，确定最优施工技术方案。相关的研究成果可为同类桥梁提供借鉴，对提升我国桥梁的施工水平发挥一定的作用。

Abstract:

The main bridge in Tingfeng Highway Bridge project is a through continuous steel truss arch bridge, and is arranged in the separate two-bridge type. The superstructure of the main bridge mainly is the steel structure. It is greatly difficult to process, manufacture, transport and install the steel structure. Its quality control is directly related to the safety of the whole bridge. Therefore, the reasonable construction method will determine the construction schedule and construction safety of bridge. The best construction technical scheme is determined by the calculation results of the finite element model to compare the influences of the different construction methods on the arch rib in the construction of through arch bridge, and to compare the advantages and disadvantages of the different construction methods in the structure effects and construction costs. The relevant research results can provide the reference for the similar bridges and play a certain role in improving the construction level of bridges in China.