Research on Construction Technology of Locking Rail Temperature for Seamless Rail Track
Rail stress is the only indicator for the strength bearing capacity calculation of seamless rail,and it is also a technical key point of seamless rail management,rail temperature stress is the core key to engineering construction and maintenance management especially.Through the analysis of the distribution and variation law of temperature force on the steel rail after locking the seamless track,it has been obtained that is a method for calculating the extended locking length of the steel rail expansion.Considering the low-temperature or high-temperature working environment of steel rails,it has been proposed that is the manual intervention construction technology for steel rail temperature,and the stress balance method to solve the problem of temperature stress concentration.Based on the calculation results of steel rail strength bearing capacity and combined with the linear section and vertical wear characteristics of seamless rail in the Jiayuguan area of the Lanzhou-Xinjiang Line,it has been given that is the specific values for the allowable range of locked rail temperature management.The research results have guiding significance for reducing rail temperature stress and ensuring the stability of seamless tracks.
seamless railrail stressfastening-down temperature of railrail breakage prevention
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