| 1. | It is more economic than single pre - stress . so , it ' s important to research pre - stressed steel structure in theory
因此对预应力钢结构进行研究有非常重要的理论意义和工程应用价值。 |
| 2. | In order to quicken convergence in this paper , the optimal process of pre - stressed steel structure is divide into several parts
在对预应力钢结构进行优化的步骤上采取分级优化的方法，缩小了解空间的大小，从而提高了算法搜索效率。 |
| 3. | Pre - stressed steel structure is a novel structural system and has been widely used in all kinds of buildings such as bridge , factory workshop , sport building and so on
预应力钢结构是一种新型的结构体系，它广泛应用于公路桥梁，工业厂房、体育场馆等大型建筑结构。 |
| 4. | When applying genetic algorithm for optimal design of pre - stressed steel structure , ways of penalty coefficient is adopted for resolving stress and displacement restrains in this paper
在应用遗传算法进行预应力钢结构的优化设计时，本文对于预应力钢结构的应力和位移约束的处理是采用了罚系数的方法。 |
| 5. | The feasibility and searching ability of improved sga presented in this paper is verified by optimal design example of single pre - stressed steel structure and multiple pre - stressed steel structure
通过几个单次预应力或多次预应力钢结构优化设计实例的计算，验证了本文算法的可行性和搜索效率的高效性。 |
| 6. | This text has carried on the analysis of resisted fire ability to the prestressing force net frame at original fire model theory with the foundation of now available prestressing force steel structure standard
本文在原有的火灾模型理论和现有的预应力钢结构规范的基础上，对预应力网架进行了抗火能力的分析。 |
| 7. | The pre - stressed arch truss string structure is one of the new pre - stress steel structure styles , because it possessed of rational mechanical feature , it has been used in many national and foreign engineering practices
预应力张弦拱桁架结构是一种新型的预应力钢结构形式,由于其受力合理的特点在国内外工程实践中得到了较多应用。 |
| 8. | Pre - stress steel structure , a new type of structure in which combine pre - stressed with steel structure . adding some high strength bar in steel structure , and forcing these bars pre - stress can improve the structure capability , reduce the structure weight
预应力钢结构是一种将预应力与钢结构相结合的新型结构，就是在钢结构中增加某些高强度杆件，并且对这些杆件施加预应力，使其达到改善结构性能，降低结构自重等作用。 |
| 9. | The optimization design model and solution made designing of multiple pre - stress steel structure be based on theoretical research , which overcame the shortcomings of establishing the value of pre - stress through trial and error and experience . it has instructive importance on optimization theory and important value in practice , and prepared for the optimization design theory of pre - stress steel structure based on reliability
本文提出的多次预应力钢结构设计模型和解法，使多次预应力钢结构设计建立在系统的优化理论基础上，克服了已有工程实践中通过多次试算，按经验来确定预应力值的弊端，对预应力钢结构的工程实际应用具有重要的理论指导意义和工程应用价值，也为进一步研究预应力钢结构的可靠性优化设计奠定了基础。 |
| 10. | The former model of staged loading and staged optimization is improved , in which the value range of pre - stress restrict in restrict equation . it provides the theoretical base for the loading time of multi - pre - stress and the value of pre - stress . and examples analyzed with linear programming and full - constrained methods prove the convergence effect well
论文在单次预应力钢结构的优化模型的基础上，建立了多次预应力钢结构的优化模型，将原有的分级加载，分级优化的模型加以改进，在优化模型中将约束方程中的预拉力约束的取值范围扩大，使得多次预应力的施加次数、施加预拉力的数值大小的确定有了理论根据，并利用线性规划和满约束结合的方法进行求解，通过算例分析，收敛效果较好。 |
