taking Youdungang Bridge on Waixiayang Road,Songjiang District,Shanghai as the research object,the overall design and structural design of long-span curved continuous rigid frame bridge based on UHPC are studied;Combined with the internal and external prestressed layout,the assembly construction scheme of segmental box girder and lower pier is studied.The spatial beam element model and the whole beam spatial solid element model are established respectively for calculation and analysis,and the calculation results are compared and analyzed.The analysis results show that the stress distribution of the spatial solid element model tends to be uniform compared with the spatial beam element.The analysis and verification using the calculation results of the spatial beam element model is partial to safety,and the structural stress fully meets the requirements.It is the first time for this project to adopt the steel structure diaphragm to replace the traditional concrete diaphragm.The steel structure diaphragm has simple structure and is convenient for the prefabrication construction of segmental box girder.From the calculation results of spatial entity element model,the effect of steel diaphragm and UHPC diaphragm is basically the same,which meets the requirements of the overall mechanical performance of the structure.
NETL
NSTL
万方数据
维普
