Study On Hysteretic Performance Of Compression-bending Structure Of Partial Filled Steel Box-concrete

Steel box-concrete within partial filled structure originates in steel tube concrete, the suitable combined section of steel box-concrete structure can be taken from partial filled concrete in the steel box in accordance with the different structure and stress section. Through transform section, steel box-concrete within partial filled structure changes the proportion of filled concrete on the box. Not only takes strengthen advantage of two materials between steel plate and concrete, but makes the structure design more appropriated. It save great mount of concrete, and minimize the structure weight.This thesis has preceded mainly the several steps as follows:Firstly, established compression-bending structure of steel box-concrete within partial filled by the ABAQUS, and select the structure components and constitutive relation. Then, according to the various axial compression,slenderness ratio and filling degree, all models including one-way loading force- displacement curve, force- displacement hysteresis curve and force- displacement skeleton curves will be calculated. Through comparison for the three parameter, finally it gets regular influence on steel box-concrete column hysteretic performance.Secondly, based on the study purpose, through the quasi static test works on the component simulated earthquake under the horizontal load, three components of force- displacement hysteresis curve and force-displacement skeleton curves will be found. In the two chapter, through analysis of constitutive relation,contact simulation and greed partition accuracy, the dependable of this conclusion on simulation analysis will be certified.Lastly, by analyzing a great quantity of calculation examples,multiple-group skeleton curve can be found. Adopted by data of hysteretic curve and calculates Component of the elastic stiffness, Yield level load,Horizontal ultimate load, The peak point displacement and The decline stiffness, and then the hysteretic model of steel-box concrete column within partial filled structure will be deduced under the low cycle reciprocating.When calculating parameter on this experimental range, it can be calculatedthrough the hysteretic model formula which provide an important information for later study on seismic behavior of steel-box concrete within partial filled structure.