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研究钢筋混凝土或预应力混凝土的主要困难在于混凝土产生裂缝的问题,随着大容量高速数字电子计算机和有限元法的出现,才有可能分析地研究混凝土物件中的裂缝的生长。但是,裂缝使连续性遭到破坏,给分析带来了困难,本文的目的在于发展一个计算机方法,能在有限元模型中自动形成裂缝线来模似裂缝的生长。网络拓扑的方法使这样的分析较为容易。我们采用系统这一概念,在这系统中把整个结构看作一个结构网络,并把各种不同的结构元件看作网络支,然后把混凝土构件中的裂缝看作网络拓扑的一个变换。
The main difficulty in the study of reinforced concrete or prestressed concrete is the problem of concrete cracking. With the advent of large-capacity high-speed digital computers and finite element methods, it is possible to analyze the growth of cracks in concrete objects. However, the cracks break the continuity and bring difficulties to the analysis. The purpose of this paper is to develop a computerized method that can automatically form crack lines in the finite element model to simulate crack growth. The network topology approach makes this analysis easier. We use the concept of a system in which the entire structure is regarded as a structural network and various structural elements are considered as network branches. Then the cracks in the concrete structure are regarded as a transformation of the network topology.