大跨度钢管混凝土拱桥线型监控关键技术研究

RESEARCH ON KEY TECHNOLOGY OF LINEAR MONITORING FOR LONG SPAN CONCRETE-FILLED STEEL TUBE ARCH BRIDGE

为研究钢管混凝土拱桥线型控制计算方法,本文以遂昌县乌溪江大桥为例,通过施工过程中几种线型比较,选取制造线型作为施工控制标准,并采取迭代计算的方式,对拱肋施工阶段过程进行了计算和MIDAS/CIVIL软件模拟,得到了精确的施工控制高程值,为其它钢管混凝土桥梁施工的线型控制技术提供了新的思路。

In this paper, it is studied the calculation method of linear control of CFST arch bridge based on the Wuxi River Bridge in Suichang. By comparing several types of lines in the construction process, the manufacturing line type is selected as the construction control standard. Then the process of arch rib construction is calculated in the way of iterative calculation and MIDAS/CIVIL simulation. In the end, the precise height of construction control is obtained. It provides a new idea for the linear control technology of other concrete-filled steel tube bridges.