In this article , the steel fibre is a kind of industrial wastes - stainless steel fibre dregs . the use of it is helpful in comprehensive utilization of resource and environment protection . the author of this article used orthogonal test design , arranged the test scheme scientifically , selected material , at last yield a high strength concret , whose strength exceeded c60 , mainly by using 42 . 5 ordinary portland cement , silica fume , superplasticizers , stainless steel fibre dregs and so on 本文所用的钢钎维是一种工业废料?不锈钢纤维渣，它的应用有利于资源的综合利用和生态环境的保护本文在广泛阅读国内外有关资料的基础上，采用正交设计，科学地安排试验方案，精心选择材料，用42 . 5普通硅酸盐水泥、硅灰、高效减水剂、不锈钢纤维渣等材料，采用常规工艺配制出了强度达到c60的高强混凝土，并且通过对试验数据的分析，给出了最优配比方案。
The author of this article used orthogonal test design , arranged the test scheme scientifically , selected material aboratively , at last yield a ultrahigh strength cement - based material ( uhscm ) , whose compressive strength exceeded 120 mpa , mainly by using 625r ordinary portland cement , superfine aggregate - - silica fume , superplasticizers and so on 本文在广泛阅读国内外有关资料的基础上，采用正交设计，科学地安排试验方案，精心选材，用625r普通硅酸盐水泥、超细颗粒集料硅灰、高效减水剂等材料，采用常规工艺配制出了一种抗压强度超过120mpa的超高强水泥基材料。
Based on a great many literature , this paper analyzes and summarizes the genetic algorithm for the design of structural optimization . the basic conceptions and primary characteristics are introduced in this paper . this paper discuss some primary factor when genetic algorithm applied on optimal design , for example the mathematical model 、 the constrained problem 、 the initial population and the controls parameter of genetic algorithm aimed at the characteristic of structural optimization and finite - element analysis , this paper accomplishes the optimal program based on the simple genetic algorithm 在广泛阅读文献和调研的基础上，本文对遗传算法及其在结构优化设计应用中的相关内容进行了分析和综合，对结构优化设计的基本概念、主要特点进行了介绍，对遗传算法应用于结构优化设计时的数学建模、约束条件处理、初始种群的产生及其遗传算法控制参数的选择几个关键因素作了概要的分析与研究。
In the activity , the teachers have studied intensively " new course standard " deeply , read the business books extensively , participating in the teaching and research activity actively , control the teaching material , the level of giving lessons in routine improves obviously , more than 10 business experts emerge among them 活动中，教师们深入钻研了《新课程标准》 ，广泛阅读业务书籍，积极参加教研活动，驾驭教材，常规授课的水平明显提高，其中涌现出10余名业务能手。
