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1.众所周知,圆形结构在外部径向均布压力作用下,其压力本身处于平衡状态。在不考虑轴向力、剪力及曲率等对结构变形的影响时,结构各截面内只产生轴向压力。但若圆形结构在外部切向均布压力作用下且其方向是从两侧指向拱项时,其切向均布压力将产生一个竖直向上的合力使结构处于静力不平衡状态,同时在结构的各截面内将有弯矩产生。原文中曾多次提出“在喷锚支护结构的计算中,必须计及切向荷载的影响和作用”,“其方向通常是从两侧指向拱顶方向的”,若果真如此,切向压力的竖向合力似
1. As we all know, the circular structure under the action of the external radial uniform pressure, the pressure itself is in equilibrium. Without considering the influence of axial force, shear force and curvature on the structural deformation, only axial pressure is generated in each section of the structure. However, if the circular structure is under the action of the external tangential uniform pressure and its direction is from the two sides to the arch, the tangential uniform pressure will produce a vertical upward force to make the structure in the static unbalanced state. There will be bending moments in each section of the structure. It has been repeatedly stated in the original text that “in the calculation of the sprayed-anchored support structure, the effects and effects of tangential loads must be taken into account”, “the direction is usually from the two sides to the direction of the vault”, if so, the tangential direction The vertical force of pressure