合肥轨道交通1号线贵湖区间调线调坡方案分析

地铁施工中,因施工误差导致隧道轴线偏差超限,需要进行调线调坡。阐明合肥轨道交通1号线贵阳路站—湖南路站区间右线原线路设计方案和施工后第三方监测的偏差情况,提出两种调线调坡方案。方案1采用平面复曲线方案;方案2采用单一曲线和站端R1 800 m小半径竖曲线的组合方案。从平面曲线、最小竖曲线半径、最小限界、超高及限速等方面进行比选,同时考虑复曲线运营养护困难的问题,最终贵湖区间右线调线调坡推荐方案2。

Horizontal and Vertical Alignment for the Section between Guiyang Road Station and Hunan Road Station of Hefei Metro Line 1

The adjustment of route alignment and gradient is needed in the building of subways due to construction errors.The methods of horizontal and vertical alignment is put forward by analyzing the original design scheme and the testing data on the construction errors from the third party for the right shield tunnel linking Guiyang Road Station and Hunan Road Station of Hefei Metro Line 1.The first method is the horizontal compound curve,and the second method is the combined scheme,which includes a single curve and a vertical curve with a small radius of 1800m at the station end.The second method proves to be recommendable for the section between Guiyang Road Station and Hunan Road Station in terms of the plane curve,minimum radius of vertical curve,the minimum gauge,super elevation and speed limit,as well as the difficulties of operation maintenance for the complex curve.