| 考虑混凝土损伤的双面组合连续梁挠度和裂缝宽度研究 |
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| 引用本文： | 张岩,段树金,郑岗.考虑混凝土损伤的双面组合连续梁挠度和裂缝宽度研究[J].石家庄铁道学院学报,2011(3):24-28. |
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| 作者姓名： | 张岩 段树金 郑岗 |
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| 作者单位： | 石家庄铁道大学土木工程学院; |
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| 基金项目： | 河北省自然科学基金(E2010001057) |
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| 摘 要： | 钢-混凝土双面组合连续梁负弯矩区上混凝土板受拉会产生裂缝。利用ANSYS有限元软件,考虑了混凝土的拉应变软化特性,对钢-混凝土双面组合2跨连续梁模型进行数值模拟分析,得到了上混凝土板裂缝分布和宽度。将计算结果与实测结果进行比较,验证了该模型的有效性。通过变换下混凝土板厚度和混凝土极限拉应变值,分析其对双面组合梁挠度和裂缝的影响;采用最小二乘法,对荷载-挠度;荷载-最大裂缝宽度曲线进行拟合,得出相应的计算公式。
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| 关 键 词： | 钢-混凝土双面组合梁 负弯矩区 裂缝宽度 拉应变软化 有限元模拟 |
Study on Deflection and Crack Width of Double Composite Continuous Beam Considering Concrete Damage |
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| Zhang Yan,Duan Shujin,Zheng Gang.Study on Deflection and Crack Width of Double Composite Continuous Beam Considering Concrete Damage[J].Journal of Shijiazhuang Railway Institute,2011(3):24-28. |
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| Authors: | Zhang Yan Duan Shujin Zheng Gang |
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| Institution: | Zhang Yan,Duan Shujin,Zheng Gang(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China) |
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| Abstract: | The top concrete slab of double steel and concrete composite continuous beam will crack under tension in the negative bending region.2-span double steel-concrete composite continuous beam specimens are simulated considering tensile strain softening by ANSYS.The distribution of cracks and their width are measured and obtained.There is a good agreement between the test measurement and the numerical simulation,which verifies the validity of the model.The effect to the concrete deflection and crack is analyzed ... |
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| Keywords: | double steel and concrete composite beam negative bending region crack width tensile strain softening FE simulation |
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