多孔无桥台斜腿刚架桥斜腿倾角优化研究  

Research on Inclination Angle Optimization of Bridge Leg of Multi-Span Non-Abutment Slant-Legged Rigid Frame Bridge

作　　者：康俊涛[1] 鄂德军 王国鼎[3] 

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉市430070 [2]湖北省林业勘察设计院,武汉市430060 [3]华中科技大学土木工程与力学学院,武汉市430074

出　　处：《公路》2006年第7期37-44,共8页Highway

摘　　要：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。Multi-span non-abutment slant-legged rigid frame bridge is a multiply redundant structure with larger optimum potential. Combined with engineering practices, according to different load combinations, the optimum analysis of inclination angle of bridge leg is carried out from two aspects of controlling section internal force and displacement of structure. The＇ results indicate that multi-span nonabutment slant-legged rigid frame bridge is similar to multi-arch bridge, and the slant-legged inclination angle of 45°-55° is suitable.

关 键 词：无桥台斜腿刚架桥 多孔 斜腿倾角 

分 类 号：U448.232[建筑科学—桥梁与隧道工程]