| 长期荷载作用下钢管混凝土轴心受压构件初始应力分析 |
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| 引用本文： | 韩冰,王元丰,金红光.长期荷载作用下钢管混凝土轴心受压构件初始应力分析[J].北京交通大学学报(自然科学版),2000,24(1). |
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| 作者姓名： | 韩冰 王元丰 金红光 |
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| 作者单位： | 北方交通大学土木建筑工程学院!北京100044(韩冰，王元丰)，2济南军区建筑设计院!山东济南250002(金红光) |
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| 摘 要： | 在分析弹性工作范围的钢管混凝土轴心受压短柱受力特点的基础上,对在长期荷载作用下钢管混凝土轴心受压构件的初始应力进行了分析.推导出在荷载作用下,三向应力状态的核心混凝土应力计算公式,引进了对钢管混凝土构件截面积的折减系数.与其它初始应力的简化公式的计算结果对比表明,此公式能全面反映含钢率、钢材及混凝土级别等因素对初始应力的影响.
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| 关 键 词： | 钢管混凝土 轴心受压构件 初始应力 换算截面积 |
Initial Stress Analysis of Axially Compressed Concrete Filled Steel Tubular Members Under Long-Term Load |
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| HAN Bing ,WANG Yuan feng ,JIN Hong guang.Initial Stress Analysis of Axially Compressed Concrete Filled Steel Tubular Members Under Long-Term Load[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2000,24(1). |
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| Authors: | HAN Bing WANG Yuan feng JIN Hong guang |
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| Institution: | HAN Bing 1,WANG Yuan feng 1,JIN Hong guang 2 |
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| Abstract: | On the basis of study on the mechanic character of axially compressed Concrete Filled Steel Tubular (CFST) members under long term load which work in the phase of elasticity, the initial stress of axially compressed CFST members was analyzed. A formula was derived to calculate the stress of core concrete under the multi stress and a discount coefficient was introduced to predigest the formula. Compared with results obtained by other simplified formulae, this formula can reflect the influential factors, such as reinforcement ratio, grades of steel and concrete, etc. In the round, the results computed by this formula were more reasonable. |
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| Keywords: | Concrete Filled Steel Tube axially compressed members initial stress conversion section area |
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