The analysis results indicate that Mouzhudong landslide is a typical failure of rock beambend. The complex geologic condition and enough groundwater are major factors.
The paper makes analysis to lower bracket of rotary crusher on its inner force by regular equation of beambend, on basis of which strength of lower bracket can be calculated.
用梁弯曲的力法正则方程对旋回式破碎机下架体进行了内力分析，以此为基础可对下架体进行强度计算。
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Measured results indicate that the bend deformation and abruption phenomenon appears very quickly when the "two-bridge-junction" method is adopted in the parallel steel plate beam.