The research on inelastic model of reinforced concrete non-planar shear walls

在建筑结构中，设置非平面抗震墙的情况并不少见。当墙体受到双向水平力作用时，就会产生跨越墙肢的裂缝。当裂纹宽度增大时，滑移是由裂纹面内的剪切力引起的。因此，当非弹性模型考虑这种现象时，有必要考虑这一现象。本文通过对弯曲拉力预制裂缝的墙体施加剪力，对墙体的裂缝宽度和滑移性能进行了试验研究。主要研究成果如下：1.通过弹性应力计算，可以估算出滑移启动时的应力水平。应力是指它在全截面上变为拉应力，并在局部达到混凝土的抗拉强度。2.在滑移屈服的条件下，所有穿过裂纹面的钢筋都产生拉伸屈服。3.滑移屈服点的剪切单位应力和滑移位移可以分别在文中给出的近似估计。

In building structures, there are not small cases in which non-planar earthquake resisting walls are placed. The crack which crosses the wall leg is generated, when such wall receives the bi-directional horizontal force. The slip occurs by the shear force in the crack plane, when this crack width increases. Therefore, it is necessary to consider this phenomenon, when the inelastic model makes it. In this study, by applying shear force to the wall in which the crack was beforehand generated by bending tensile force, crack width and slip property were examined experimentally. Main research results are as follows.1.The stress level in the slip start can be estimated by the elastic stress calculation. The stress is the case in which it becomes the tension in the full cross section and reaches the tensile strength of the concrete in the part.2.It becomes a case in which all the reinforcement which cross the crack plane did the tensile yield for the condition of the slip yield.3.Shearing unit stress and slip displacement of slip yield point can be estimated in the approximation respectively presented.