短槽支承石材幕墙面板槽口受剪破坏试验研究

Test Study on Shear Failure of Short Groove Supported Stone Curtain Wall Panel Notch

为研究行业标准JGJ 133-2001《金属与石材幕墙工程技术规范》关于短槽支承石板槽口抗剪公式中剪切面长度S取单个槽口总长是否安全,通过静载法研究了10块短槽支承石板槽口的受剪破坏形态。试验结果表明:槽口破坏方向与板面呈一定夹角,并指向槽底;槽口受剪破坏面最大弧长小于槽口弧长,且大于2倍钩深加钩宽之和,所以现行标准关于短槽支承石板槽口抗剪承载力计算公式中剪切面长度取槽口弧长所得到的计算结果偏于不安全。Abaqus有限元软件模拟的结果与试验结果较为吻合。研究成果为现行标准计算公式中剪切面长度的取值提出了修正建议值。

To study whether it is safe to take the total length of single notch as the shear plane length s in the shear formula of short groove supported stone panel notch in the industry standard JGJ 133-2001 Technical Code for Metal and Stone Curtain Wall Engineering, the shear failure modes of short groove supported stone panel notches are studied by static load method. The test results show that: the notch failure direction and the panel surface have a certain angle and point to the groove bottom;the maximum arc length of the notch shear failure surface is less than the notch arc length, and is greater than the sum of hook depth and hook width;therefore, the results calculated by taking the arc length of notch as the shear panel length in the shear formula of short groove supported stone panel notch of the current code is unsafe. The simulation results of Abaqus are in good agreement with the experimental results. The research results put forward the revised recommended value for the value of shear panel length in the calculation formula of the current code.