Study On The Parameter Of Construction Control Of Long-Span Prestressed Concrete Continuous Rigid Frame Bridge

With the development of the national economy and transport, the demands of bridge span are increasing, especially in the western mountainous area, long-span prestressed concrete continuous rigid frame bridge has been widely applied, due to beautiful structural line shape, convenient construction method, rensonable expense and many other advantages. Because of prestressed concrete continuous rigid frame bridge adopt cantilever construction, in order to ensure the mechanical behavior and bridge line shape meeting the design require-ment, as well as the quality in the construction, it must be to do the construction control of prestressed concrete continuous rigid frame bridge.In the thesis, the parameter sensitivity is analysed in the process of cantilever construction and bridge stage, based on the construction control of Laoshan bridge and Wuxia River bridge which are located on Xiamen-Chengdu highway, combined with theory of bridge construction control, by establishing the finite element analytical calculation model.Through the prestressed tendons friction loss of theoretical analysis and experimental research, it is could discover the regular pattern of prestressed fiction loss and fiction deviation coefficient.Based on introducing the basic theory of temperature effect, completed the finite element simulation of the sunshine temperature field distribution in the specific section. By the measurea data fitting out the temperature gradient index distribution mode under the sunshine radiation, and with the domestic and foreign relevant bridge design standard for the temperature curve compared and analyzed, it analyses and calculates theoretically the sunshine temperature effect in different state, the influence degree in the process of construction control is determind. Finally, it proposes the relevant measures of the temperture rectification about framework erection in the construction control, so the work here may provides some references for the design and construction of similar bridges in the future.