Concrete-filled Steel Tubular Arch Bridge Construction Boom Tension Control Analysis And Optimization

The arch bridge is one kind of antiquited bridge type, which have written down brilliant history on bridge of our country history. The steel tube concrete arch bridge is one kind of new model arch bridge that the new technique being pouring a concrete in the steel tube applied in the ancient times on the arch bridge basis develops, with the contemporary construction of large-span bridges, as well as more and more concerned about the aesthetics of the bridge, With the present age longspan bridge building and the more and more attention to bridge aesthetics,a little complicated heterotype arch bridge structure arch bridge building, monitoring requiring that carry out whole journey on it's the process being under construction without exception control the various longspan steel tube concrete department pole arch bridge especially with ensure that construction is safe, smooth go along.With the development of times, the steel tube concrete arch bridge construction technology has been developed by leaps and bounds in this paper several of its construction methods commonly used features of a brief introduction to the construction of monitoring the contents, methods and importance of doing the relevant elaboration.In this paper, with Zhejiang Hu Zhou City houxi arch bridge who's construction supervision as the engineering background, with large-scale general-purpose finite element software ANSYS establishment finite element model on the bridge construction phase analysis. Tied arch bridge to boom tension adjusted to force the main line of this article, support the use of rigid beam, rigid boom law, a drop-frame method in three ways from different angles to optimize the adjustment of the boom to compare our analysis, according to comparative analysis of results and Anji houxi arched bridge's actual situation, this paper presents a method of the drop-frame to meet design and construction requirements; Then to the order which one time collapsed has carried on the discussion, obtained from the both sides has collapsed the order to middle; Finally on Anji houxi bridge in suspenders order a calculation, whether they are both ends to the middle of the tensioend order or to both sides of the symmetric tensioend order can be a satisfactory result. Finally, this paper, a drop-frame the results of the calculation method and on-site monitoring of a comparative analysis of measured data, the results from the comparison can be seen monitoring the achieving the desired results. This paper used a drop-frame method for the same type of construction of the bridge provides a reference control.