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自Von 提出用考虑柱的初始缺陷的压溃理论作为计算柱的承载力的理论依据以来,特别是近四十年来对残余应力的研究,使柱的理论研究得到很大的发展。然而这些仅仅限于柱极限荷载寻求方法的探讨。本文研究了弯曲失稳破坏柱的工作,用内抗力曲面、外力曲面这两个新概念,提出了四维压溃理论的物理模型及其简化的三维形式,对柱在加载时的工作性态作了形象的说明。同时运用这一物理模型,提出了用等轴力法、等侧移法和等弯矩法求解柱的极限荷载的新途径。
Since Von proposed using the crush theory of column initial defects as the theoretical basis for calculating the bearing capacity of columns, especially the study of residual stress in the past forty years, the theoretical research of columns has been greatly developed. However, these are limited to the discussion of column ultimate load seeking methods. In this paper, the work of bending instability failure columns is studied. Using the two new concepts of internal resistance surfaces and external force surfaces, the physical model of the four-dimensional collapse theory and its simplified three-dimensional form are proposed. The description of the image. At the same time, using this physical model, a new approach to solve the ultimate load of column with iso-axial force method, iso-lateral displacement method and constant moment method is proposed.