| 采用通用有限元法分析组合板的剪切机理 |
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| 摘 要： | 混凝土-冷弯异型钢组合板的强度取决于钢-混凝土界面的纵向剪切破坏。在目前设计过程中,通常采用的纵向剪切强度设计方法,如them-k法和部分交互法,均基于足尺试验,经济性差,耗时长,且仍是半经验的。建立组合板的通用有限元法,将钢-混凝土剪切面作为接触问题,考虑粘贴和摩擦。在分析模型中考虑几何非线性和材料非线性。进行推出试验,验证初步有限元分析,并考虑接触面的粘贴和摩擦。采用本接触模型对组合板的受弯性能进行有限元分析。通过对比组合板的推出试验和弯曲试验,对基于非线性接触理论的有限元分析进行验证。结果表明:基于界面接触模型的有限元分析与试验结果吻合较好,可用于分析组合板的性能和极限承载力。
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| 关 键 词： | 组合板 剪切滑移 凝聚力 摩擦 接触分析 有限元分析 |
Shear Bond Mechanism of Composite Slabs:a Universal FE Approach |
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| Abstract: | The strength of concrete slabs composited with cold-formed profiled steel decks is normally governed by the longitudinal shear bond failure at the steel concrete interface.The design methods for the longitudinal shear bond strength adopted in the current construction practice such as them-k method and partial interaction method all based on the full-size tests,which are expensive and time consuming,however are also semi-empirical.A universal FE approach of composite slabs is presented,in which the shear bon... |
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| Keywords: | Composite slabs Shear bond slip Cohesion Friction Contact analysis Finite element analysis |
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