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本文将连梁简化为连续肢片,并考虑变形由剪切效应和弯曲效应两部分组成。其中,弯曲效应又分为服从平截面假设的纯弯曲和由连梁剪切弯曲而引起的翘曲;而剪切效应仅考虑墙肢各层段的局部剪切弯曲,不包含连梁的剪切弯曲。同时,考虑连梁的反弯点出现在中点。按此,用最小势能原理导出了受侧向水平荷载作用下双肢墙的连续化位移法控制微分方程。本文假设翘曲位移函数按各墙肢的形心坐标在各自墙肢截面上均布,而保持墙肢轴力与其静面矩成比例的关系。该控制微分方程求解简便。算出过孔口中心横截面上的正应力后,就可按平衡关系算出各杆的剪力。本法对双肢墙有很好的精度。
In this paper, the beam is simplified as a continuous limb, and the deformation is considered by the shear effect and the bending effect of two parts. Among them, the bending effect is divided into the pure bending under the assumption of flat section and the warping caused by the shear bending of the connecting beam, while the shear effect only considers the local shear bending of each layer of the wall and limb. Cut curved. At the same time, consider that the bending point of the joint beam appears at the midpoint. According to this, the governing differential equation of continuous displacement method of double limbs under horizontal lateral load was deduced by the principle of minimum potential energy. This paper assumes that the warp displacement function is based on the centroid coordinates of each wall limb and is uniformly distributed over the respective wall limb sections while maintaining the wall force proportional to the static moment. The governing differential equation is easy to solve. After calculating the normal stress in the center cross-section of the orifice, the shear force of each rod can be calculated according to the equilibrium relationship. The law on the double wall has a good accuracy.