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首页> 外文会议>Composite Construction in Steel and Concrete VII >Predictive Models for the Stiffness of Vertical Screws as Shear Connection in Timber-Concrete Composite Floors
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Predictive Models for the Stiffness of Vertical Screws as Shear Connection in Timber-Concrete Composite Floors

机译：木材-混凝土复合地板剪力连接中垂直螺钉刚度的预测模型

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The stiffness, strength, and arrangement of the shear connection play a crucial role in the design of timber-concrete composite (TCC). This paper reviews the available analytical models for prediction of the stiffness of TCC shear connections. The methodology of different analytical models for stiffness of the mechanical fastener TCC connection is discussed and the accuracy of these models is examined based on push out test results for shear connectors. The simplified stiffness models underestimated the experimental data of normal wood screw with an error ranging approximately 10-40%, whereas the models based on Winkler's theory were inaccurate and calculated a much lower stiffness compared to that of experimental test with an error of approximately 60%. The reasons attributed to inaccuracy of the stiffness models are described. This paper recommends further investigation on the prediction of foundation moduli of timber and concrete as the main input parameters of the models based on the Winkler's theory.
机译：剪切连接的刚度，强度和布置在木材-混凝土复合材料（TCC）的设计中起着至关重要的作用。本文回顾了可用于预测TCC剪切连接刚度的分析模型。讨论了机械紧固件TCC连接刚度的不同分析模型的方法，并基于剪切连接器的推出测试结果检查了这些模型的准确性。简化的刚度模型低估了普通木螺钉的实验数据，误差范围大约为10-40％，而基于Winkler理论的模型不准确，并且与实验测试相比，计算出的刚度要低得多，误差大约为60％ 。描述了归因于刚度模型不准确的原因。本文基于Winkler的理论，建议进一步研究以木材和混凝土的基础模量作为模型的主要输入参数。

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