V-shaped Continuous Construction Rigid Frame Arch Bridge And Control Technology Applied Research

For large span prestressed concrete rigid frame construction V-Arch Bridge of technical difficulties, the whole bridge construction technology program implementation and to evaluate the effectiveness, optimization, validation and correction, carried out a series of technical, field trials and theoretical studies of construction, the final the formation of a safe,reliable, economical, advanced and suitable for passenger dedicated railway bridge span Composite specific conditions of process equipment, construction technology, for the future of PDL same type of bridge construction has accumulated experience, summed up a set of advanced construction monitoring technology, beam alignment precision control in less than2cm; measured data obtained a number of universal guiding significance.Taking Xiaolan Watercourse Main Bridge as the research object, mainly through the use of ANSYS and MIDAS software finite element model theoretical calculations, carried out large-span bridge construction monitoring technology to bridge the linear prediction and adjustment, and strive to make the bridge linear You may meet the design state. Cradle of studies using the construction process. To meet the large tonnage loads, large cross-sectional dimensions, construction technology and precision ballastless track prestressed beams; study how to reduce or avoid hanging basket under construction in the front end of the flexible lead to concrete sections along the vertical end surface microcracks, thereby long-term effects on the bridge linear seams reduce shear creep deformation. Cap, massive research complex cross member Durable Concrete Construction Technology. Using ANSYS and MIDAS finite element analysis software, for complex cross-section of concrete hydration heat temperature field analysis and guidance to optimize the construction process. Technology and equipment research on three prestressed pipe vacuum assisted grouting. Conduct slurry mix design and optimization, process testing and optimization, selection and improvement of equipment and other research.In summary,this paper combining with the Main Bridge project of XiaoLanShuiDao starting from all aspects of construction, it details the construction technology under the condition of large span prestressed concrete rigid frame V-shaped arch combination bridge.Targeted gives a lot of problems and solutions specific methods. For subsequent similar bridge construction played a guiding role.