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本文给出了在任意侧向水平荷载作用下圆形筒体结构的一种近似分析方法。给出了双筒体(外筒、核心筒)和三重筒体(外筒、内筒、核心筒)两类筒体结构的静力和动力计算公式,文末给出了双筒体结构的具体算例。本文根据圆形筒体结构的受力特点,在采用前人经常采用的两个基本假定的前提下,将外筒、内筒模拟为实体筒壳,按薄膜理论进行分析,在水平荷载作用下,考虑外筒、内筒与核心筒共同工作,按水平位移协调原则,确定它们之间的剪力分配,进而可以确定结构的内力和位移。本文提供的方法计算简便,工作量小,并且可以根据得到的解析表达式分析筒体的受力性能,便于研究和改选设计。
In this paper, an approximate analysis method of circular cylinder structure under any lateral lateral load is given. The static and dynamic calculation formulas for two types of cylinder structures, ie, cylinder (external cylinder, core cylinder) and triple cylinder (external cylinder, inner cylinder, and core cylinder), are given. At the end of the text, the specifics of the double cylinder structure are given. Examples. In this paper, according to the force characteristics of the circular cylinder structure, the outer cylinder and the inner cylinder are simulated as a solid cylinder shell under the premise of using two basic assumptions previously used by the predecessors, and analyzed by thin film theory under the action of horizontal loads. Considering that the outer cylinder, the inner cylinder and the core cylinder work together, according to the principle of horizontal displacement coordination, determine the shear distribution between them, and then the internal forces and displacements of the structure can be determined. The method provided by this paper is easy to calculate and has a small workload, and can analyze the force performance of the cylinder according to the analytical expression obtained, and facilitate the research and redesign selection.