【摘要】 研究预应力矩形钢管混凝土梁极限承载力实用计算公式及有限元计算方法 ,并对混凝土强度等级、含钢率、预应力等参数进行分析。计算结果表明 ,矩形钢管混凝土梁受拉区配筋可以大幅度提高构件极限承载力 ,同时施加预应力可以有效减小构件挠度更多还原

【Abstract】 A practical formula for ultimate bearing capacity of the prestressed concrete\|filled rectangular steel pipe beam is deduced and the finite element method is studied in this paper.Parameters including concrete grade,steel ratio,prestress are analyzed.Calculation results show that placing steel bar in the tensile area will improve the ultimate bearing capacity of the concrete\|filled rectangular steel pipe beam, and meanwhile prestressing will effectively reduce its deflection.更多还原