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为分析局部锈蚀钢箱梁腹板在纯剪荷载作用下的屈曲特性,对不同翼缘宽度、厚度、腹板宽高比和锈蚀体积损失(DOPV)影响下的腹板剪切屈曲强度进行了有限元计算,并基于工字钢梁腹板屈曲强度计算式,得到了钢箱梁腹板剪切屈曲系数计算式;提出了能衡量钢箱梁锈蚀腹板剩余强度的系数η,拟合了局部锈蚀钢箱梁腹板剪切屈曲强度的计算式。
In order to analyze the buckling behavior of locally corroded steel box girder under pure shear loading, the shear buckling strength of web under the influence of different wing width, thickness, web aspect ratio and corroded volume loss (DOPV) Finite element method, and based on the calculation formula of flexural strength of I-Beam webs, the formula of shear buckling coefficient of steel box girder webs is obtained. The coefficient η that can measure the residual strength of steel box girder is proposed. Calculation formula of shear buckling strength of locally corroded steel box webs.