The mechanical properties of stiffened plates are significantly influenced by types of stiff-eners' cross section. With the consideration of different thickness of plates, different moment of inertia of stiffeners and different polar moment of inertia of stiffeners, the mechanical properties of stiffened plates subjected to out-of-plane uniform loads was investigated by finite element method in this paper. The results showed that angle steel could more effectively improve out-plane flexural properties of stiffened plates than channel steel and I-steel.%加劲肋截面形式对加劲板的力学性能有重要影响.文中以某工程中承受平面外均布荷载的加劲板为研究对象,采用有限元方法,分别研究了不同加劲板母板厚度、不同加劲肋截面惯性矩对加劲板力学性能的影响.结果表明:采用角钢加劲肋提高加劲板抗弯性能是最有效的,等边角钢加劲肋较不等边角钢加劲肋能更好地的提高加劲板的抗弯性能,工字钢和槽钢加劲肋改善加劲板抗弯性能的能力是相近的.
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