结合某实际螺旋钢楼梯工程，分别采用空间曲杆模型及空间壳模型，考虑支座铰接和刚接两种边界条件下，从位移、内力、极限承载力三方面，对楼梯结构进行了对比研究，得出了一些有价值的结论。%Combining with the project of the spiral steel stairs,the paper adopts the space bent rod model and space shell model,considers the support hinge joint and stiff joint,undertakes the comparison research from the displacement,internal force,and extreme loading capacity,and has some valuable conclusion.
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