| 钢管-钢骨高强混凝土抗弯承载力理论研究 |
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| 引用本文： | 刘晓,王连广,张晓范.钢管-钢骨高强混凝土抗弯承载力理论研究[J].东北大学学报(自然科学版),2007,28(8):1198-1201. |
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| 作者姓名： | 刘晓 王连广 张晓范 |
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| 作者单位： | 1. 东北大学,资源与土木工程学院,辽宁,沈阳,110004
2. 沈阳大学,建筑工程学院,辽宁,沈阳,110044 |
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| 基金项目： | 辽宁省自然科学基金，辽宁省重点实验室开放基金 |
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| 摘 要： | 研究在不同荷载作用和截面布置情况下,钢管-钢骨高强混凝土的破坏模式及抗弯承载力计算方法.根据构件在不同状态下的中和轴位置和3种材料的应力-应变关系,确定了9种破坏模式.考虑到钢管增强了混凝土的约束效应,在已有钢骨高强混凝土的抗弯承载力计算方法的基础上,通过采用极限状态叠加法,推导出对称和非对称组合构件在纯弯状态下的受压区高度和承载力计算公式.计算结果与已有文献数据吻合较好,表明极限状态叠加法可以应用于该种组合构件,并适用于不同截面的配置情况.
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| 关 键 词： | 钢管 钢骨 组合构件 抗弯承载力 高强混凝土 |
| 文章编号： | 1005-3026（2007）08-1198-04 |
| 修稿时间： | 2006-09-04 |
On the Flexural Bearing Capacity of Steel Tube Members Filled with Bar-Reinforced HS Concrete |
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| LIU Xiao,WANG Lian-guang,ZHANG Xiao-fan.On the Flexural Bearing Capacity of Steel Tube Members Filled with Bar-Reinforced HS Concrete[J].Journal of Northeastern University(Natural Science),2007,28(8):1198-1201. |
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| Authors: | LIU Xiao WANG Lian-guang ZHANG Xiao-fan |
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| Institution: | (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; (2) School of Architectural and Civil Engineering, Shenyang University, Shenyang 110044, China |
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| Abstract: | Studies theoretically the failure modes and calculation of the flexural bearing capacity of steel tube members filled with bar-reinforced high-strength(HS) concrete under different loadings with different sectional layouts.According to the different positions of neutral axis and stress-strain relationship of 3 kinds of materials,9 failure modes are ascertained.Based on the existing calculation of flexural bearing capacity of bar-reinforced HS concrete and taking account of the strengthened constraining effect of steel tube on concrete,the formulae of the height of compression zone and flexural bearing capacity are deduced by superposition method in limiting state for both symmetric and asymmetric composite members in pure bending state.The calculated result conforms well to earlier works and shows that the superposition method used is available and suitable for different sectional layouts. |
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| Keywords: | steel tube bar reinforcement composite structure flexural bearing capacity high- strength concrete |
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