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本文用弹性力学平面问题有限单元法,对墙体上不开洞的墙梁结构进行研究。以九种二跨墙梁为研究对象,根据有限元法的计算结果,分别给出了墙梁的应力和主应力在墙体和托梁中的分布图,以及主应力迹线图。并计算出托梁的主要截面的内力,绘出沿梁长弯矩、剪力、轴力的内力图以及位移图。本文对托梁上两个跨中截面以及中间支座截面的弯矩、轴力的主要因素进行了回归分忻,得到了M,N的近似计算公式。
In this paper, the finite element method of the plane problem of elastic mechanics is used to study the wall beam structure without holes on the wall. Taking nine kinds of two-span wall beams as the research object, according to the results of the finite element method, the distribution diagrams of stresses and principal stresses of wall beams in walls and joists, and the main stress trace diagrams are given. The internal forces of the main section of the joist are calculated and the internal force diagrams and displacement maps along the long bending moment, shear force, and axial force of the beam are plotted. In this paper, the main factors of the bending moment and axial force of the two cross mid-sections and intermediate bearing sections on the joist are regressed, and the approximate formulas of M and N are obtained.