摘要
由于种种因素受限,部分公路桥梁采用单支点或近距离双支点支撑,在桥梁抗倾覆稳定方面存在一定的安全隐患。在目前我国公路运营的情况下,严重的超载现象致使桥梁整体倾覆的事故时有发生。以一座三跨混凝土连续箱梁为例,分别从支座布置间距、平面曲线半径及桥梁自身重量三个方面进行了连续箱梁桥的抗倾覆稳定性评价,并给出相关结论。
Due to the limitation of various factors, part of highway bridges adopt the support with single fulcrum or double fulcrum at a close range which brings certain potential risks in the aspect of anti - overturning stability of bridge. Under the operation condition of our country＇s highway at present, the accidents with the whole overturning of the bridge happen occasionally due to serious overloaded phenomenon. Taking a three - span prestressed concrete continuous box girder bridge as an example, the anti - overturning stability of continuous box girder bridge is evaluated respectively from the aspects of support arrangement distance, plane curve radius and bridge weight, and relevant conclusion is given.
出处
《北方交通》
2013年第2期53-56,共4页
Northern Communications
关键词
连续箱梁
抗倾覆
支座布置
曲线半径
Continuous box girder
Anti -overturning
Support arrangement
Curve radius
