Railway sleeper device preventing ballasts from flying and state judgment method for railway ballast particles
A railway rail and anti-flying technology, which is applied in the direction of tracks, roads, ballast layers, etc., can solve the problems of sleepers without considering ballast phenomenon, abrupt geometric changes of sleepers, wind pressure vortex and fluctuations, etc., to avoid scattered roads Ballast accumulation phenomenon, prevention and control of flying ballast phenomenon, and optimization of dynamic effect
Inactive Publication Date: 2015-12-09
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0010] 1. The existing high-speed railway concrete sleeper does not consider the phenomenon of flying ballast, and the geometric shape of the sleeper changes abruptly, which is easy to cause wind pressure vortex and fluctuation, and is easy to form the phenomenon of flying ballast;
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[0051]Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0052] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understood...
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The embodiment of the invention provides a railway sleeper device preventing ballasts from flying and a state judgment method for railway ballast particles. Other parts apart from rail-bearing grooves on the upper surface of the railway sleeper device preventing ballasts from flying are of streamlined shapes. Streamline shapes formed from left and right rail-bearing grooves to the central point of a sleeper are symmetric to each other. Streamlined shapes are also adopted by two side surfaces. The central point of the upper surface is located at the minimum point of each streamline shape. The height difference between each rail-bearing groove of the sleeper and the surface of a ballast bed is greater than the set threshold value. The railway sleeper device preventing ballasts from flying and the state judgment method for railway ballast particles have following beneficial effects: a novel design scheme is put forwards for the sleeper preventing ballasts from flying of a novel high-speed railway so that dynamic characteristics of the sleeper is ensured and requirements for longitudinal and transverse resistance of the ballast bed are satisfied; line stability is ensured; modeling is performed by ANSYS software; and aerodynamic characteristics of a novel sleeper preventing ballasts from flying are analyzed.
Description
technical field [0001] The invention relates to the technical field of railway tracks, in particular to a railway sleeper device for preventing flying ballast and a method for judging the state of ballast particles. Background technique [0002] Railway is an important national infrastructure and an environmentally friendly and efficient means of transportation. China's high-speed railway currently ranks first in the world in operating mileage, and has become an important player on the international railway stage. Ballasted track is one of the main forms of high-speed railway track structure in various countries, and it occupies an important share compared with ballastless track. The world's first high-speed railway, the Tokaido Shinkansen in Japan, uses a ballasted track structure. 75% of the intercity railways built in Germany in the early days were about ballasted tracks. Almost all French high-speed railways are ballasted track structures. The operating speed of the e...
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IPC IPC(8): E01B3/00G01N15/00
Inventor 井国庆潘姿华郭云龙
Owner BEIJING JIAOTONG UNIV