广东公路交通
廣東公路交通
엄동공로교통
GUANGDONG HIGHWAY COMMUNICATIONS
2011年
2期
11-14,18
,共5页
钢管混凝土%脱空率%偏心受压%应力-应变关系%有限元分析
鋼管混凝土%脫空率%偏心受壓%應力-應變關繫%有限元分析
강관혼응토%탈공솔%편심수압%응력-응변관계%유한원분석
concrete-filled steel tubes%separation ratio%eccentric compression%stress-strain relationship%finite element analysis
介绍了脱空钢管混凝土偏心受压有限元建模方法,提出了偏心受压脱空钢管混凝土考虑脱空率影响的核心混凝土应力-应变关系,并利用ANSYS程序对不同脱空率和偏心率的脱空钢管混凝土短柱进行非线性有限元计算。计算结果表明,脱空率和偏心率的增大明显地削弱了钢管对核心混凝土的套箍作用。最后,将计算结果与现有试验研究成果进行对比分析,两者的结果总体上吻合较好。
介紹瞭脫空鋼管混凝土偏心受壓有限元建模方法,提齣瞭偏心受壓脫空鋼管混凝土攷慮脫空率影響的覈心混凝土應力-應變關繫,併利用ANSYS程序對不同脫空率和偏心率的脫空鋼管混凝土短柱進行非線性有限元計算。計算結果錶明,脫空率和偏心率的增大明顯地削弱瞭鋼管對覈心混凝土的套箍作用。最後,將計算結果與現有試驗研究成果進行對比分析,兩者的結果總體上吻閤較好。
개소료탈공강관혼응토편심수압유한원건모방법,제출료편심수압탈공강관혼응토고필탈공솔영향적핵심혼응토응력-응변관계,병이용ANSYS정서대불동탈공솔화편심솔적탈공강관혼응토단주진행비선성유한원계산。계산결과표명,탈공솔화편심솔적증대명현지삭약료강관대핵심혼응토적투고작용。최후,장계산결과여현유시험연구성과진행대비분석,량자적결과총체상문합교호。
This article describes the finite element model of eccentrically-loaded separate concrete-filled steel tubes.A stress-strain relation of core concrete is presented,in which the confinement effect of steel tube to core concrete is modified by separation ratio.Then finite element analyzed models were modeled by ANSYS with different separation ratio and eccentric ratio.The results showed that the separation ratio and eccentric ratio effect significantly to the confinement effect of steel tube to core concrete.At last,comparison was carried out between with the calculation and the results of test,two results agreed well.
