Construction Control Of The Sidewalk Bridge Of Great Wall Road In Heze City

Cable-stayed bridge is a high reduntant structure systerm. Structural system changes constantly with the construction stage changing in construction process. Especially for the prestressed concrete cable-stayed bridge, there will be some differences between actual parameters of the structure and design value. Uncertainty of force changing with the environmental will make the stress state and linear of the structure deviating from the design value. This deviation affects not only the fold of the bridge but also the safety of the structure during the construction. Therefore, the construction control is very important in the construction process of cable-stayed bridge. Based on the sidewalk bridge of the Great Wall road in Heze city, the following several aspects are studied:(1)Construction control of cable-stayed bridge is analyzed;introducing the project survey of sidewalk bridge of the Great Road, pointing out the keys of construction control of the project, proposing a reasonable monitoring program and control procedures.(2)Spatial model of sidewalk bridge of the Great Wall road is activated,which used to simulation calculate and analyse in finite element. Two methods are used to calculate the reasonable cable force.and then the reasonable cable force is optimized; the construction phase analysis method is simply introduced, and each construction stage is calculated and analysed.The components'internal force and deformation numerical value of each construction stage and the final bridge is gotten,which is used to guide the construction control.(3)Several methods of cable force measurement are analyzed, based on sidewalk bridge of the Great Wall road. According to the engineering practice,a kind of method which can be used to measure cable force of the short cable anchoraged by Pin hinge is put forward. The method is used to the practical projects, which obtains good result. (4)According to the Actual situation of sidewalk bridge of the Great Wall road, measuring methods of elevation and Internal force of girder, cable force, Internal force and linearof steel tower are introduced.(5)measurement results of each test items are listed, and also measurement errors are simply analysed.(6)Finally, this article is summarized, and Development and research of construction control of such projects is look forward to.Through theoretical calculation and analysis and the entire process of construction control of sidewalk bridge of the Great Wall road, This article made a beneficial attempt of construction control of this kind of bridge, which will provide reference to construction control of this kind of bridge.