The Antiknock Property Finite Element Analysis Of L Steel Reinforced Concrete Special-shaped Column

When explosion accident occur,the main bearing component of beams and columns has damaged,which cause the collapse of the whole building easily.Therefore,how to improve the antiknock property of important building structure has become an important problem which must be considered by the structure engineer in the design.This paper is aim to research the antiknock property of L steel reinforced concrete special-shaped column.According to the study of L-shaped section steel reinforced concrete special-shaped column analysis,we can get the parameters of improving the antiknock performance of the column,and these analysis can help us to prevent or reduce the overall destruction of buildings cause by the damage of L steel reinforced concrete special-shaped columns in explosion load,reduce economic losses and provide people more time to escape.In this paper,we use the finite element analysis software ABAQUS to simulate analysis on the dynamic response of L steel reinforced concrete special-shaped column in explosion load,we change the parameter which affect the property of the column to research the the antiknock property of it.The main content includes the following several aspects:We take a briefly describe on the momentous explosion accidents domestic and overseas which have bring the harm to people and the influence to the society.Then we have a summary on the research situation of antiknock property of building structure domestic and oversea.Besides,we have a brief introduction of steel reinforced concrete structure.According to the related literature ensure the relationship of overpressure peak pressure and the duration of the explosion shock wave,and to select the explosion impact load which the model required.Finally,we determine the model of the blast wave overpressure which suitable for the component of the surface of the explosion shock loading in this paper.We use the finite element software ABAQUS to establish the model of L steel reinforced concrete special-shaped column.Firstly,we have to determine the parameters of the model needed.Secondly,we have to determine the constitutive relation model of each component.Concrete use the concrete damage plasticity model,steel uses classic metal plasticity model.In this paper,due to the limitation of test conditions,we use the the finite element software ABAQUS to simulate the antiknock property simulation analysis of L steel reinforced concrete special-shaped column,and in order to verify the accuracy of the papmeter in the ABAQUS,we have a simulation analysis of 3 steel reinforced concrete special-shaped columns,then compare the simulation results with the experimental results,the simulation results and the experimental results are basically consistent at last.When we simulate the column,firstly,we analyze the overall destruction form of L steel reinforced concrete special-shaped columns in blast load,and then we analyze end constraints,thickness of steel bone,stirrup,longitudinal,slenderness ratio and the equivalent distance,which have impacted the antiknock property of L steel reinforced concrete special-shaped column.After research showed that using reasonable end constraint can improve antiknock property of L steel reinforced concrete special-shaped columns,and increase thickness of the steel bone,encryption stirrup spacing,increase longitudinal bar diameter,decrease slenderness ratio and increase the equivalent distance can improve the antiknock property of L steel reinforced concrete special-shaped columns.