大跨度石拱桥极限承载力分析  

Analysis on Ultimate Bearing Capacity of Long Span Stone Arch Bridges

作　　者：代攀 胡大琳[2] 

机构地区：[1]云南省交通规划设计研究院,云南昆明650011 [2]长安大学公路学院,陕西西安710064

出　　处：《城市道桥与防洪》2009年第5期61-63,共3页Urban Roads Bridges & Flood Control

摘　　要：该文以丹河新桥为例,通过计算铰点极限弯矩的方法确定圬工拱桥极限承载力,综合考虑了拱的受力状况以及材料特性,为圬工拱桥极限承载力的研究提供了一个新的方向,亦可供钢筋混凝土拱桥极限承载力的确定做参考。Taking Danhe Bridge as an example,this paper determines the ultimate bearing capacity of masonry arch bridge by calculating ultimate bending moment of hinge point,and considers the loading state of arch bridge and material characteristics comprehensively.It offers the new direction for researching the ultimate bearing capacity of masonry arch bridge,and the reference able for determining the ultimate bearing capacity of reinforced concrete arch bridge.

关 键 词：拱桥 极限承载力 极限弯矩 极限偏心距 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]