Study On The Whole Process Analysis Of Steel Box–concrete Composite Arch Bridge

This article relies on Chongqing Jiaotong University, Professor Zhou Zhixiangundertaken by “Performance and Analysis Research on Steel Box-Concrete ArchStructure” of the National Natural Science Foundation of China (51078373) and theNational973Project“Research on Theory Behavioral Evolution and Safety MonitoringMethod of the Bridge”. On the basis of existing research results on the constitutiveunity of reinforced concrete，carried out the mechanical behavior of the whole processanalysis about steel box-concrete composite arch bridge.The main research work is asfollows:①On the basis of existing research results on reinforced concrete unifiedconstitutive, explore a unified constitutive theory in the ABAQUS finite elementprogram.②For steel box-concrete test beams, the establishment of a refined finite elementmodel and unified constitutive finite element model, comparative analysis of the finiteelement results with the test results, discuss the applicability and advantages anddisadvantages of both methods, indicating uniform constitutive finite element model toreflect the steel box-the mechanical properties of concrete composite structures.③In demonstration of the correctness of the unified constitutive theory, based onthe establishment of a unified constitutive finite element model Sunxi River Bridge.④Studied the mechanical behavior of main arch which effect in temperaturechanges, shrinkage and creep, normal load and overload, and further analysis thewhole process mechanical behavior of the main arch under the limit load.