摘要
结合湖州内环北线苏家庄立交SC匝道第5联混凝土弯箱梁桥的设计,探讨了在不影响结构整体美观效果的基础上,通过适当增大箱梁腹板斜率来保证受压区高度满足规范要求。另外,通过边跨梁端及中跨跨中不对称梁高的设计,改善了连续刚构桥的整体受力状况;通过加大边墩处梁端横向支座中心距,避免了弯箱梁桥的横向支座脱空。相关措施对同类桥梁的设计具有很好的借鉴和指导意义。
Combined with the design of the 5th concrete curved box girder bridge on the SC Ramp of Sujiazhuang Overpass in Inner Ring North Line of Huzhou,this paper discusses the proper increment of the web slop of box girder to guarantee the depth of compression zone meeting the standard requirements on the basis of not affecting the overall aesthetic effect of the structure.In addition,the design of dissymmetric beam heights at the beam end of side span and in the middle of central span improves the overall stress status of continuous rigid-frame bridge.The increment of center distance of the lateral support of beam end at the side span avoids the empty of lateral support of curved box girder bridge.The relevant measures have the good reference and guiding significance for the design of the similar bridges.
出处
《城市道桥与防洪》
2019年第8期101-103,M0013,共4页
Urban Roads Bridges & Flood Control
关键词
连续刚构
弯桥
斜腹板
匝道
受压区高度
continuous rigid frame
curved bridge
inclined web
ramp
depth of compression zone
