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| The Method and Necessity of Applying General Earthling on Ballstless Track Bridge of Passenger Dedicated Railway Line |
| TANG Yuan-fang |
| The Second Survey and Design Institute of China Railway, Chengdu, Sichuan 610031, China |
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Abstract Research purposes: The paper discusses the principle, requirement and measure of general earthling on the ballastless track bridge of the passenger dedicated railway line in China.
Research methods: By analysing the disserve caused by the lightning strike and the failure of the OCS, and referring to earthling concepts and related codes in both developed countries and China, this paper proposes the necessary and concrete measures of using general earthling on the ballastless track bridge of the passenger dedicated railway line.
Research conclusion: It is necessary to make reliable electric connection between the abutment of the bridge and the general earthling system in the section of the viaduct. Based on the character of passenger dedicated railway line in China and in order to avoid effect to the signal track circuit and meet the needs of short-circuit protection of traction power supply system, we set section (about 100m) with earthling reinforcing steel bar in ballastless track board and make each reinforcing steel bar connected to general earthling system in its own section. Now, this measure is applying in ZhengXi passenger dedicated railway line.
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Received: 13 June 2006
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2006, Vol. 23 
