Construction Control Of A Long-Span V-Shape Pier Continuous Rigid Frame Bridge & Analyses Of Spatial Static Mechanical Stress Properties

The section construction of bridge structure, especially for long-span bridge, always undergoes a long complicated process, including system conversion. As the construction stage carried, all are varying, including the bridge structure formation, the supporting constraint condition and the mode of loading action. Because of error existence, the actual status deviates from the ideal. As a result, the construction stage needs supervised and controled. In this paper, combined with the construction of the XiTa Bridge in Yong Kang, self-adaptive method is adopted for controlling; the monitor process of long-span prestressed-concrete V pier continuous rigid frame bridge is elucidated detailly. Good result is obtained; it gives some experience to the controlling of such type bridge's construction.Whether the constructed bridge can meet the normal used criterion is the only thing, which is considered in normal design, while the character during the constructing process is always ignored. If the echanical analysis is ignored during construction, it will affect the bridge structure. Introducing the element technology of birth and death, adopting the solid element method, the process of long-span prestressed-concrete V pier continuous rigid frame bridge is modeled by ANYSYS. Considered the structure self-weight and the spatial effect of the prestressing force, combined the actual data of XiTa Bridge, The 3D solid element model is built to analyze, the static character analysis is emphasized. It is practical significant for the construction long-span prestressed-concrete bridge.3D prestressed design is adopted by long-span prestressed-concrete V pier continuous rigid frame bridge normally. The spatial stresses effect is obvious and the stresses status is complicated. The result of 2D analysis deviates from actual status greatly. For the bridge's safty, it is necessary to do spatial effect analysis on the designed structure. Basing accurately computation, serise useful conclusions are drawed. They are of great theory value and engineering value for bridge of such type.