3种不同钢管混凝土本构关系模型研究被引量：14

Research on three stress-strain relationships of concrete-filled steel tube

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摘要对韩林海,Susantha,Saenz 3种钢管混凝土核心混凝土的单轴应力—应变关系做了介绍,对采用不同混凝土强度等级、不同径厚比(宽厚比)的圆钢管(方钢管)混凝土的应力—应变关系作了分析,并对3种不同本构关系作了对比分析研究。结果表明:对于相同等级的混凝土,径厚比(宽厚比)越小,钢管对核心混凝土的约束效应越好,即核心混凝土强度提高越大;Saenz模型的延性好于其他两种模型,应力峰值较大;3种模型中,圆钢管对混凝土的约束效应明显好于方钢管。 Three uniaxial stress-strain relationships of concrete filled steel tube by Han linhai, Susantha and Saenz are introduced. According to the different concrete strength, plate radius-to-thickness （width-to-thickness） ratio, the uniaxial stress-strain relationships of concrete-filled circular （square） steel tube are analyzed and compared. The results show that steel tube provide a good confining effect to concrete when the radius-to-thickness （width-to-thickness） ratio is small, that is to say the concrete strength improve larger;the ductility and peak value of Saenz model show better than other models. Obviously,the confining effect to concrete of circular steel tube is better than square one.

作者吴文平黄炳生樊建慧

机构地区江苏沪宁钢机股份有限公司南京工业大学土木工程学院

出处《四川建筑科学研究》北大核心 2009年第6期19-23,共5页 Sichuan Building Science

基金江苏省普通高校自然科学研究计划资助项目(04KJB560049)

关键词钢管混凝土单轴应力-应变关系约束效应混凝土强度径厚比(宽厚比) concrete-filled steel tube uniaxial stress-strain relationship confining effect concrete strength radius-to-thickness （ width- to-thickness） ratio

分类号 TU392.3 [建筑科学—结构工程]

作者简介吴文平（1982-），男，江苏高邮人，硕士研究生，主要从事钢结构方面的研究。E—mail：wuwenping227@126．com

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