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多孔无桥台斜腿刚架桥是一种高次超静定结构,结构优化潜力较大。结合具体工程实践,根据不同的荷载组合,从结构的控制截面内力和位移两个方面对斜腿倾角进行了优化分析。研究结果表明:多孔无桥台斜腿刚架桥与拱桥的连拱情况有相似之处,斜腿倾角在45°~55°较为合适。
Porous non-abutment inclined leg rigid frame bridge is a kind of high-order statically indeterminate structure with great potential for structural optimization. According to the concrete engineering practice, according to different load combinations, the inclined angle of inclined leg is optimized and analyzed from two aspects of internal force and displacement of the control section of the structure. The results show that there are similarities between the multi-arch bridge and the arched bridge. The inclined angle of the inclined leg is more suitable between 45 ° and 55 °.