偏心支承对两跨150°弯箱梁桥支承反力的影响  

INFLUENCE OF ECCENTRIC SUPPORT ON SUPPORTING REACTIONS OF 150° CURVED BOX-GIRDER BRIDGES WITH TWO SPANS

作　　者：贾燕[1] 马亚丽[1] 王东炜[2] 

机构地区：[1]郑州航空工业管理学院,郑州450052 [2]郑州大学,郑州450002

出　　处：《工业建筑》2007年第z1期418-420,共3页Industrial Construction

基　　金：国家自然科学基金资助项目(50178064)

摘　　要：弯箱梁桥是近几年来高速公路和高架桥上使用较多的一种桥型。由于其结构特点,其设计计算非常繁杂,工作量非常大。通过对72个圆心角为150°两跨连续弯箱梁桥模型在偏心支承的影响下支承反力的分析,导出偏心矩、桥梁跨长与支承反力的经验公式,以供工程师在设计中参考。Curved box-girder bridge is one type of bridges often used on expressways and flyovers extensively for recent years.Because of its structural features,but its design caculation is too complicated,moreover,the design work is very time consuming.Through the supporting reactions analysis of 72 curved box-girder bridge models with two spans under the influence of eccentric support,it is derived the experience formula between supporting reactions and bridge span,eccentricity of support,in order that engineers are able to control the selection of the design parameters while doing the design work.

关 键 词：弯箱梁桥 支承反力 偏心支承 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]