方钢管钢骨高强混凝土压弯剪承载力分析  

CAPACITY ANALYSIS OF SQUARE TUBE FILLED WITH STEEL REINFORCED HIGH-STRENGTH CONCRETE UNDER COMPRESSION-BENDING-SHEAR

作　　者：赵同峰[1] 欧阳伟[1] 郝晓彬[1] 

机构地区：[1]辽宁省交通高等专科学校道路桥梁工程系,辽宁沈阳110122

出　　处：《工程力学》2011年第11期153-158,165,共7页Engineering Mechanics

基　　金：国家教育部博士点基金项目(20050145012)

摘　　要：进行了6根方钢管钢骨高强混凝土压弯剪试件的试验研究。试验参数为轴压比、剪跨比及配骨指标。试验结果表明:在试验轴压比范围内,随着轴压比及配骨指标的增长,承载力逐渐增加;随着剪跨比的减小,抗剪承载力迅速增加,构件明显呈现剪切破坏特征。通过有限元法建立的计算模型,其计算结果经回归分析,得出了纯剪、压弯剪、压弯构件的界限剪跨比限值及实用的压弯剪构件极限承载力计算公式。在试验参数范围内,公式计算结果与试验结果吻合较好。Static loading tests of 6 specimens of square steel tubes filled with steel reinforced high-strengthconcrete were carried. Test parameters were axial Iorce ratio, shear-span rtio and steel reinforced ratio. Results showed that the capacity rise with the increase of the axial force ratio and steel reinforced ratio. The bearing capacity increased rapidly and shear fracture became more and more obvious with the decrease of the shear-span ratio. Formulas for the capacity of compression-bending-shear members and boundary shear span ratio were proposed through analyzing the calculated results from the finite element method. The calculated results were in good agreement with the test ones.

关 键 词：方钢管混凝土 压弯剪 试验 承载力 分析 

分 类 号：TU398[建筑科学—结构工程]