The external wall of a warehouse is a reinforced concrete two-way slab which has one simply supported end and three fixed ends, bearing load of triangle.

堆场类建筑的外墙一般按照三边固定一边自由的混凝土双向板，板承受荷载为三角形荷载。

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In this paper, sine series and polynomial beam functions are derived. They can satisfy various boundary conditions of beams such as the simply supported ends, fixed ends and free end.

本文推导了正弦级数与多项式的梁函数，它可以满足梁的简支、固定、自由等各种边界条件。

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