Studies on Lay out Scheme of Steel Beam in Midspan Bottom Slab of Long-Span Continuous Rigid-Frame Bridge

摘要：

Most of steel beams in midspan bottom slab are fixed up following the shape of girder bottom edge with both ends anchoring to the bottom slab wedge. Due to the girder of long-span continuous rigid-frame bridge has variable cross section,the shape of steel beams in midspan bottom slab presents a curve opening downward,which does harm to the girder. Arranging steel beams along straight line in the bottom slab with both ends anchoring to the top wedge is better for girder to carry load. The analysis results of two methods analyzed by FEM shows that arranging of straight line lowers the stress of the top edge of girder meanwhile it increases the stress of bottom slab edge. Besides,the method lowers pressure stress and shear stress of the height middle of the girder where the steel beam anchoring and increases the main tension stress reservation which is good for the girder to carry load.

作者: LV Dan ZHENG Yi-feng ZHAO Qun

作者单位: College of Construction Engineering,Jilin University,Changchun 130026,China

会议类型: 国际会议

会议名称: 2011 International Conference on Environmental Biotechnology and Materials Engineering(2011年环境生物技术与材料工程国际会议)

会议地点: 哈尔滨

会议语种:英文

页码: 1933-1937

在线出版日期: 2011-03-26（万方平台首次上网日期，不代表论文的发表时间）