结构设计程序中的内外存数据管理

DATA MANAGEMENT FOR THE STRUCTURAL DESIGN PROGRAMS

本文给出了我们为开发预应力砼结构计算机辅助设计系统时研制的数据管理系统．它可分为两部分，内存数据管理和数据文件管理．这里内存数据管理采用了动态存贮分配概念；文件管理提供了层次到的数据管理模式，它根据问题名、文件扩展名、通道号、数组名、记录号和数据分级管理数据．本文的数据管理包括一组ＦＯＲＴＲＡＮ７７写成的子程序，子程序可以直接受设计程序调用．它已成功地用在预应力砼结构计算机辅助设计系统．

This paper presents the data management which is deigned for the development of CAD system of building structures. It is divided into two parts, incore data management and data file manasemaent. In the incore data management the concept of dynamic storage allocation is used, and in the data file managemat a hierachical model is adopted which managed data according to problem name, file extension name, logical unit number, array name, recotd number and data.The data management comprises a group of FORTRAN77 subroutines which can be directly called by the design program. The management presented in this paper has been used successfully in CAD system of Prestressed Concrete Building Structures.