摘要
考虑到转体施工连续梁桥临时支座设计时一般没有考虑扭转的影响,对临时支座的抗扭受力进行了理论分析和公式推导,进而保证临时支座在转体施工过程中的安全性与稳定性。以商合杭(商丘—合肥—杭州)铁路太和特大桥跨漯阜(漯河—阜阳)铁路(60+100+60) m连续梁桥为例,考虑转体角加速度的影响,介绍了临时支座的设计和抗倾覆稳定性验算分析方法。
Considering that the design of temporary bearing for rotating construction continuous girder bridge generally does not consider the influence of torsion,the theoretical analysis and formula deduction for torsional force of temporary bearing were carried out,so as to ensure the construction safety and stability of temporary bearing in the course of rotation.Taking the(60+100+60)m continuous girder of Taihe super-large bridge of Shangqiu-Hefei-Hangzhou railway across Luohe-Fuyang railway as an example,considering the influence of rotation angular acceleration,the design of temporary bearing and check analysis of anti-overturning stability were introduced.
作者
许超
王常峰
窦国昆
李颖
XU Chao;WANG Changfeng;DOU Guokun;LI Ying(School of Civil Engineering,Yantai University,Yantai Shandong 264005,China)
出处
《铁道建筑》
北大核心
2018年第11期50-52,62,共4页
Railway Engineering
基金
国家自然科学基金(51368036)
关键词
铁路桥梁
抗扭验算
理论分析
临时支座
角加速度
Railway bridge
Torsion checking
Theoretical analysis
Temporary bearing
Angular acceleration
