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| Research on the Girder Erection at 1 8‰Long Gradient with JQ 160 Bridge Girder Erecting Machine |
| PAN Sheng—qi |
| China Railway No．4 Engineering Group Co．Ltd，Hefei，Anhui 230041，China |
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Abstract Research purposes: This paper analyzes the characteristics of girder erection at 1 8‰ long gradient with JQ 160 bridge girder erecting machine，mainly verifies the climbing capacity，hauling capacity，braking capacity and remaining the level of machine arias of JQ 160 bridge girder erecting machine，and puts forward the plan for upgrading JQ 160 bridge girder erecting machine for the purpose of meeting the rapid development demands of railway construction．
Research conclusions: Based on the analyses and calculation of the climbing capacity，hauling capacity，braking capacity and remaining the level of machine aiTas of JQI60 bridge girder erecting machine，the plan for upgrading JQ 160 bridge girder erecting machine Was put forward and applied in Bidding WI of Yichang—Wanzhou Railway．This upgrading plan Can expand the applicable scope of JQI60 bridge girder erecting machine can be expanded to 18‰long gradient with meeting the technical and safety requirements of girder erection at 1 8‰ long gradient．
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Received: 10 February 2009
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2009, Vol. 26 
