Effects Of Disease On The Dynamic Performance Of High-speed Railway

Recent years, the high-speed railway of China has developed a lot. So the research of disease monitoring of high-speed railway track structure also continues to deepen. China’s high-speed railway ballastless track’s structure is multi-layered, how to monitor the track structure disease problem and how to quickly and accurately detect the harm extent of the disease and location has been the important issues and problems in the future high-speed rail development.In this paper, analyzing our high-speed railway CRTSII slab Track. The track structure disease occurs mainly in the concrete slab between CA mortar, concrete and CA mortar layer away from the seam and void, under the arch on the environmental effects of the track structure is a common problem. This paper is to study the changes of disease state in the high-speed railway ballastless track. Selecting diseases not only concluding track plate but also concluding CA mortar layer away from the seam occurs in different parts of the track and the track board arch plate CA mortar different from the through slit width, by studying the general rule of diseases situation in the above dynamics change, and thus to research how to estimate the track diseases situation through the detection of track dynamic performance. first to classify the case as well as the laying of track structure is collected and collated.Secondly using principles to solve practical problems dynamics in the track structure of the system by the different dynamics and simplified into different mechanical models to compare.About how to find the extent and distribution of disease damage quickly and accurately, under the basic of the characteristics of the multi-layer structure’s track,analyzing of the mechanical characteristics of the track structure, simulated track structure in the case of the same disease in different loads by finite element software under diffreent conditions of dynamic characteristics, including normal and different disease status, compare and analyze track system dynamic performance under various conditions.In this paper, the substances is simulated by ANSYS,mainly to research thedynamic analysis of track structure. And the data were analyzed, with a change of the dynamic performance of CA mortar occurrence of disease under summarized in the hope that this result can be obtained with a reference to the actual method of dynamic performance analysis and evaluation of test results.