双折线拱组合拱式空腹桁袈结构受力性能与优化设计

Double-folded arch Compound Arch Vierendeel Truss Framework Stress Performance Analysis and Optimum Design

提出采用一对折线拱相向地组成一组合拱式空腹桁架,中间连以铰接竖杆,使上下拱共同承载,既具有梁式桁架的特点,又具有拱式结构的优点,再运用优化理论对其进行受力分析,从而获得了重量轻、结构轻巧、受力性能较好的空腹桁架的最佳型式。

the article offers a mode of vierendeel truss, which consists of a pair of face - to - face folded arch connected with hinge vertical post in the middle making above and below arches bear common load. The mode will make vierendeel truss have characteristics of girder truss and advantage of arch structure together. Again with the optimized theory the stress analysis of vierendeel truss is carried on. Finally an optimum mode of vierendeel truss with light weight, dexterous structure and better stress performance is obtained.