型钢混凝土梁正截面承载力优化分析

通过对15个型钢混凝土梁构件(只改变内置型钢上翼缘宽度)的梁中单调加载试验进行有限元模拟,从有限元的计算结果以及理论分析得出,型钢混凝土梁构件内置型钢的上翼缘的宽度与下翼缘之比为0.7～0.8时,对核心区混凝土有高效约束,同时核心区的混凝土对内置型钢翼缘有有效的支撑,并且内置型钢、钢筋和混凝土都能充分发挥其力学性能,即达到最佳经济模式。

Optimization analysis on normal cross section bearing capacity of steel reinforced concrete beams

Through the finite element simulation on beam monotonic loading test of 15 steel reinforced concrete beams(only changed the built-in steel flange width),from the finite element computed results and theoretical analysis,gained the top flange width and the bottom flange width ratio of 0.7~0.8 of steel reinforced concrete beam structure built-in steel,to core concrete had an efficient constraint,while the core area concrete to built-in steel flange had effective support,and the built-in steel,reinforcing steel and concrete could all give full play to their mechanical properties,namely to achieve the best economic mode.