Test Research On Mechanical Characteristics Of CRTSâ…¡ Slab Track In High-speed Railway Ballastless Track

High-speed railway is an important symbol of railway around the world today.The "long-term railway network plan" approved by the State Council in 2004 not only depicted the blueprint about the rapid development of High-speed railway in China, but also brought many new issues and challenges to the railway builders. Combining with Practical engineering, this paper do a Test Research on Mechanical Characteristics about the CRTSII Ballastless track slab proposed in the "Ballastless track technology re-innovation" project by The Ministry of Railways which is based on extensive literature research. The main research contents are as follows:First, According to the test results to study the fracture morphology under the static load function, And the law of development about cracks and deflection on track slab, Finally get the cracking load and limit load under static load under the action.Secondly, the fatigue damage form of experimental component and fatigue load are analyzed on the influence of static bearing capacity, On this basis, analyzed the biggest crack extension rule under the fatigue load, And summarizes calculation method of normal section of developing regularity of the largest crack width under the uniform amplitude fatigue load.At last, Also make a nonlinear finite element analysis of the track slab. A finite element model was established based on the test research, Process of Simulation Test was used by finite element analysis software called ANSYS, the numerical analysis results and the experimental results were compared to Verify the test accuracy.