圆竹-钢组合拱桥变形控制关键技术

Key Technologies for Deformation Control of Circular Bamboo-steel Composite Arch Bridge

为探究圆竹-钢组合拱桥拱圈等部位的变形控制技术,以武夷山玲珑大桥为研究对象,通过Midas Civil软件建立模型,分析其在设计阶段,不同荷载组合下,不同的桥面系、拱圈截面、横向连接和拱脚连接方式下的拱圈竖向与横向位移。结果表明:采用组合桥面系、横向连接以及提高拱圈与拱脚的刚度能在一定程度上减少拱圈等部位的变形。为更有效地控制变形,还需要结合实际施工过程中的变形控制技术和软件对各个施工阶段的模拟。综合应用设计阶段的分析和施工阶段中的变形控制技术,可以有效预防和控制圆竹-钢组合拱桥的变形问题,确保结构的安全性和稳定性。研究结果可为其他类似圆竹结构工程的建设提供参考。

To explore the deformation control technology of bamboo-steel composite arch bridges,Linglong Bridge in Wuyishan was taken as the research subject in this paper.Midas Civil software was used to establish a model for analyzing the vertical and lateral displacements of the arches under different load combinations,considering various bridge deck systems,arch section profiles,lateral connections,and arch-foot connections during the design phase.The results revealed that employing a combination of bridge deck systems,lateral connections,and increasing the stiffness of the arches and arch feet can effectively reduce deformations in the arch sections to a certain extent.However,for more efficient deformation control,it was essential to integrate practical deformation control techniques during the construction process and simulate various construction stages using software to ensure deformation control throughout construction.The comprehensive application of design phase analysis and deformation control technology during construction stages can effectively prevent and manage deformation issues in bamboo-steel composite arch bridges,ensuring the structural safety and stability.This study results could provide references for the construction of similar bamboo-based structural engineering projects.