Abstract：Research purposes：Aiming at the track conditions and engineering characteristics of Line 9 of Shanghai urban rail transit that the track exchanges 4 times from tunnel to ground and especially the track radius in departure and arrival section to the depot is very small, this paper presents a safe and reliable construction scheme after the comparison was made between the run-through scheme and the joint transition scheme by analyzing the flexible and rigid suspension inside and outside the tunnel. And this scheme has been applied for the construction.
Research conclusions：The transition from rigid to flexible suspension is the key techniques of the suspended contact wire in the metro project. On the basis of comprehensive consideration to the requirements of the smooth transition and the accuracy installation of the pantograph and the train speed, the run-through transition scheme was used to this track. By accurately computation and in-site debugging, the rapid transition fro rigid to flexible suspension was achieved in the curve section to reduce the complexity of transition.
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The Third Railway Survey and Design Institute Group Corporation. The Feasibility Study of the First Period of Shanghai Railway Transit 9th Line Project [R]. Tianjin: The Third Railway Survey and Design Institute Group Corporation, 2004.
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2010, Vol. 27 
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