Check the mass source.
Base shear = seismic factor X lumped weight.
If you want to use dead load as one of the source of the weight to evaluate the base shear. Check the box to right of "From Self and Specified Mass and Loads", and add DEAD load with multiplier of 1.
Define --->mass source
If you do not chose dead load to be the source of the weight. The base shear might be calculated using the self-weight of the structure only and you might get a small value of base shear.
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只看楼主 我来说两句估计你的模型总质量不对或结构有许多点没有约束,请检查!
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Base shear = seismic factor X lumped weight.
If you want to use dead load as one of the source of the weight to evaluate the base shear. Check the box to right of "From Self and Specified Mass and Loads", and add DEAD load with multiplier of 1.
Define --->mass source
If you do not chose dead load to be the source of the weight. The base shear might be calculated using the self-weight of the structure only and you might get a small value of base shear.
回复 举报
估计你的模型总质量不对或结构有许多点没有约束,请检查!
回复 举报