Construction technology of changing the original rail track into speed-raising turnout

Taking the example of changing the original rail track of Huangheya stop and Santang stop of Beijing-Shanghai railway into GLC(06)01 speed-raising turnout,it elaborates the construction technology of speed-raising turnout replacing from the first-phase turnout surveying and positioning,turnout pre-paving,construction procedures of key construction before low-speed running,in low-speed running,and after sealing,and elaborates the construction technology of speed-raising turnout replacing,which provides a reference for relevant projects.