Research of efficient width of flange in wide flanged girder with variable cross section and long over-hanging flange

Journal of Chongqing Jiaotong University(Natural Science) ›› 2004, Vol. 23 ›› Issue (2): 1-5.

Research of efficient width of flange in wide flanged girder with variable cross section and long over-hanging flange

LI Li-feng , ¹ SHAO Xu-dong , ¹ CHENG Xiang-yun , ¹ BAO Wei-gang ,² YUAN Lun-yi²

1.Hunan University, Changsha 410082, China; 2.Highway Planning and Design Institute of China Communications Engineering Group, Beijing 100010, China

Received:2003-09-28 Online:2004-04-15 Published:2015-05-18

变截面长悬臂宽箱梁桥翼缘有效宽度研究

李立峰,¹邵旭东,¹程翔云,¹鲍卫刚,²袁伦一²

1.湖南大学,湖南长沙410082；2.中交公路规划设计院,北京100010

作者简介:李立峰(1971—),男,湖南沅江人,副教授,博士生,从事大跨桥梁结构分析工作
基金资助:
交通部桥梁规范研究课题

Abstract

Abstract: Normal stress of 20 PC bridges, with wide flanged box girder, is analyzed with the methods of spatial plate/shell FEM, plane frame FEM and DIN 1075. According to the stress results, the paper makes an analysis of shear lag efficient of three main sections in girders. Available method of equivalent simple supported span length of different sections is advised according to DIN 1075. The basal research will make the new bridge specification being more scientific and reasonable

Key words: wide flanged box girder, shear lag, efficient width of flange, spatial finite element method, Din 1075

摘要： 应用空间板壳有限元、平面杆系有限元和德国DIN1075规范对20座变截面长悬臂宽箱梁桥3个控制截面的恒载正应力进行了分析,详细研究了截面的剪力滞效应.并据此结果提出了按德国DIN1075模式计算时各控制断面的等效简支跨长的合理取值方法,通过补充有关条文使新规范的制定更为科学合理

关键词: 宽箱梁, 剪力滞, 翼缘有效宽度, 空间有限元, DIN1075

CLC Number:

U448.213

LI Li-feng , SHAO Xu-dong , CHENG Xiang-yun , BAO Wei-gang , YUAN Lun-yi. Research of efficient width of flange in wide flanged girder with variable cross section and long over-hanging flange[J]. Journal of Chongqing Jiaotong University(Natural Science), 2004, 23(2): 1-5.

李立峰,邵旭东,程翔云,鲍卫刚,袁伦一. 变截面长悬臂宽箱梁桥翼缘有效宽度研究[J]. 重庆交通大学学报（自然科学版）, 2004, 23(2): 1-5.

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