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首页> 美国政府科技报告 >Concrete Mechanics. Part C. Numerical Models for Reinforced Concrete Structures in Plane Stress
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Concrete Mechanics. Part C. Numerical Models for Reinforced Concrete Structures in Plane Stress

机译：具体力学。 C部分。平面应力下钢筋混凝土结构的数值模型

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This report delineates the development of two numerical models for the analysis of reinforced concrete structures in plane stress. In an introductory chapter the motives for this study are outlined and the essentials of reinforced concrete structures are reviewed. This survey indicates the need for analysis, which led to the decision to derive a Micro-model and a Macro-model. The Micro-model is a program based on a special type of finite element method for plates in plane stress. Material nonlinearities can be dealt with, but geometrical nonlinearity has not been taken into account. Bond and bond slip are modelled. Probably a feature which attracts most attention is the possibility of having discrete cracks across elements in any direction. This makes the program particularly well suited to simulate structures which fail in a brittle mode in which one crack or just a few cracks dominate their behavior. The program is called MICRO/1. The Macro-model is a program for plane beams and framed structures. Material nonlinearities as well as geometrical nonlinearities are dealt with. In this program the concept of 'smeared-out' cracks is applied. Only bond and bond slip between the main reinforcing bars and the concrete are modelled. The aim of the program is to calculate the global behavior of a beam up to failure load, rather than to study detailed stresses as in the case of the Micro-model. The Macro-model program is called MACRO/1.

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