钢管混凝土系杆拱桥整体吊装工法吊点研究

Research on Suspending Points of CFST Tied-Arc Bridge Used Integral Hoisting Method

针对吊点位置对钢管混凝土系杆拱桥吊装结构内力和变形的影响,以实桥工程为依托,研究了双拱肋-系杆劲性骨架整体吊装结构吊点位置的确定方法,基于能量原理提出了一种实用的吊点位置确定方法——结构变形向量二范数法.通过计算分析,验证了结构变形向量二范数法相对于能量法的等效性和简便实用性.

Considering the effect of CFST tied-arc bridge internal force and deformation due to suspending points,research has carried on analyzing the method to determine the suspending points of double-arch tied stiff skeleton hoisting structure relying on the actual bridge engineering.Based on the energy principle,apractical method to determine the suspending points called ‘the structural deformation vector 2norm method＇is raised.The calculation results show the equivalence and convenience of the structural deformation vector 2norm method compared to energy principle,which can provides reference for similar projects.