摘要:在保证结构安全的前提下，对结构进行限额设计，是目前建设单位对设计单位的要求。因而对设计提出了更高的标准。在限额设计的要求下，设计人员有两个趋向：一是设计尽量满足设计规范的下限，从而达到限额的目的；二是进行局部调整，试图达到限额设计的要求。而实际上，在限额设计的要求下，结构设计都存在一定的问题。本文寻求一种优化设计的方法来解决限额设计存在的问题。通过对传统的结构优化设计方法和结构优化理论的分析与比较，本文引入面向对象技术机制，应用面向对象程序设计技术，运用类、对象、成员函数等概念将结构优化问题进行数据抽象处理。在此基础上，编制Visual C++程序对问题进行优化求解，并结合CAD接口技术将求解结果进行可视化处理。

Abstract: Under the condition that structure safety is guaranteed, it is the basic requirement for design units to perform quota design of structure at present. Therefore, a higher standard should be put forward. In the context of quota design, there are two trends for designers, one is try to satisfy the floor level of design norms consequently to reach the quotas, the other is to conduct local adjustment to meet the demand. Actually on demand of quota design there are still some problems in structure design. Accordingly, this thesis is to explore a design optimization method to solve this problem existing in quota design. Compared with traditional design methods and structure optimization method, this thesis is to introduce OOT(object oriented technology)and apply it to data abstraction disposing with the combination of some concepts like class, object, member function and so on. Based on this, problems will be solved optimizingly through programming Visual C++ and solution results will be processed visually through combining CAD interfacing technology.