摘要
以多点支撑加固坦拱桥技术为依据,选取重庆市某区县三种具有代表性净跨径和矢跨比的空腹式坦拱桥为依托工程,通过大量有限元建模分析,研究这三种跨径坦拱桥采用多点Y形支撑加固技术时,在同一支撑点Y形斜撑角度不同的条件下主拱圈内力的改善情况,寻找出该加固技术加固这三种跨径坦拱桥的理论最优斜撑角度,对今后的加固设计具有很好的参考价值。
According to the principles of multi-point supporting strengthening flat arch bridge,this paper selects three kinds of open spandrel flat arch bridge with representative clear span and rise-span ratio in a county of Chongqing as project practice,analyzes the improvement situation of internal force of main arch when using multi-point supporting with Y Type to strengthen those three flat arch bridge with different angle of the diagonal brace on the same supporting point.The optimal theoretical angle of the diagonal brace when using multi-point supporting with Y Type to strengthening those three flat arch bridge is finally found,which has great reference value to strengthening design in the future.
出处
《交通标准化》
2011年第22期159-162,共4页
Communications Standardization
关键词
多点Y形支撑
加固
坦拱桥
理论最优斜撑角度
multi-point supporting with Y Type
strengthening
flat arch bridge
optimal theoretical angle of the diagonal brace
