(1 同济大学土木工程防灾国家重点实验室,上海 200092; 2 北京航空航天大学土木工程系,北京 100083)
［摘要］针对输煤栈桥及支架用钢量偏大的问题，提出用等截面圆钢替代工字钢用于合理选取优化变量，及分段设置优化参数的方法，减少了栈桥及灯笼架结构优化所需要的优化变量。利用ANSYS软件中的优化技术，对某煤场输煤栈桥及支架方案的用钢情况进行了优化，分析了优化结果的静、动力特性，并与原方案进行了比较。优化后方案在最大变形、最大应力及动态特性等方面同原方案无明显差别或优于原方案，但各构件的承载能力得到更好的发挥，用钢总量较原方案明显减少。
［关键词］输煤栈桥；优化分析；钢材选型；等截面替代
Optimization of profiled bar selection for coal conveying viaduct
Zhang Jing１, Gao Zhengguo2(1 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University，Shanghai 200092, China; 2 Beijing University of Aeronautics and Astronautics，Beijing 100083, China)
Abstract:According to the large amount of steel used for coal conveying viaduct, methods of section substitution and regional parameters optimization are presented to reduce the number of variables for the optimization of coal conveying viaduct structure. The optimization function in ANSYS is employed to optimize the structure. The static and dynamic characters of the optimal design are analyzed and compared with the original design. The results show that the maximal strain, stress and dynamic characteristics are similar to the original design, while the bearing capacity of each element is more fully utilized, and the amount of steel consumed is decreased greatly.
Keywords:coal conveying viaduct; optimization; profiled bar selection; section substitution
作者简介：张静，硕士研究生，Email:jeanbabyzhang@gmail.com。
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