The spatial steel frame made of steel angles and plate welding replaces the traditional binding steel bar skeleton to form the spatial steel frame concrete structural member.In order to further study the shear behavior of spatial steel frame concrete beams,the finite element analysis model of the shear behavior of spatial steel frame concrete beams is established by using Abaqus software.The shear bearing capacity of diagonal section of concrete beam with spatial steel frame is analyzed.The analysis results show that the spatial steel frame is favorable to the shear bearing capacity of diagonal section of the concrete beam,the shear bearing capacity of the spatial steel frame concrete beam increases with the decrease of shear span ratio and the increase of the stirrup characteristic value.Based on the existing experimental studies and simulation analysis,the calculation formula of shear bearing capacity of the spatial steel frame concrete beam is estab-lished by limit equilibrium principle and considering the advantageous role of the spatial steel frame,the cal-culation value of the formula agrees well with the test value,which can be used as the calculation formula of the shear bearing capacity of the spatial steel frame concrete beam.
关键词
空间钢构架/混凝土简支梁/受剪性能/有限元分析/承载力计算公式
Key words
spatial steel frame/concrete beam supported of both ends/shear behavior/finite element analysis/bearing capacity calculation formula
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