分析在正常使用极限状态下截面内力分别为最大负弯矩和最大正剪力两种工况下应力分布规律。

Then take three-dimensional simulation for the model, and analyze the stress distribution when conditions maximum positive shear or maximum nagetive moment happens.

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框筒结构在水平荷载作用下的变形由剪切变形和弯曲变形两部分组成，弯曲变形必须考虑正、负剪力滞的影响。

The deformation of frame-tube structure under the lateral load is constituted by both shear and bend deflections. The effect of shear lag must be considered for the bend deflection.

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