双幅曲线钢-混组合箱梁受力性能试验研究  

EXPERIMENTAL STUDY ON THE MECHANICAL BEHAVIOR OF DOUBLE-AMPLITUDE CURVED CONTINUOUS STEEL-COMPOSITE BOX GIRDER

作　　者：郝皓 刘凡[1] HAO Hao;LIU Fan(Suzhou University of Science and Technology,Jiangsu Suzhou215000,China)

机构地区：[1]苏州科技大学,江苏苏州215000

出　　处：《低温建筑技术》2020年第12期51-54,共4页Low Temperature Architecture Technology

基　　金：江苏省建设系统科技项目(2020ZD08)。

摘　　要：为研究不同曲率半径对双幅曲线连续钢-混组合箱梁受力性能的影响,设计制作了2根9m跨径的试验梁,并进行静载试验。通过试验获得试件的裂缝、承载力、荷载-挠度曲线和沿梁高应变曲线。结果表明增加曲率半径可提高试件的开裂荷载、屈服荷载和极限荷载,可减小竖向挠度变形,减小跨中和四分点处的扭转角度和扭转角度的增长率,为采用该类箱梁的桥梁设计提供参考。In order to study the influence of different curvature radii on the mechanical properties of double-amplitude curved continuous steel-composite box girder,29m span test beams were designed and made,and the static load test was carried out.Then,the crack,bearing capacity,load-deflection curve and high strain curve along the beam are obtained.The results show that increasing the radius of curvature can increase the cracking load,yield load and ultimate load,reduce the vertical deflection,and reduce the torsion Angle and the growth rate of the torsion angle at the middle and four points of the span.Finally,the paper provide a reference for the bridge design with this kind of box girder.

关 键 词：桥梁工程 钢-混凝土组合梁 受力性能 

分 类 号：TU317[建筑科学—结构工程]