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Dynamic Stiffness Design Method

A design method and dynamic stiffness technology, applied in roads, buildings, tracks, etc., can solve the problems of accurately evaluating the vibration reduction effect of the isolation type vibration damping pad floating slab track system, etc., and achieve a scientific and reasonable design method with good versatility Effect

Active Publication Date: 2020-07-24
SOUTHWEST JIAOTONG UNIV +2
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] This type of traditional design method only tests a single preload, that is, the weight of the rails, fasteners and track slabs on the damping pad + half of the vehicle load, and the dynamic stiffness of the damping pad under the condition of a single load frequency
Although the dynamic stiffness of the damping pad using this single condition can effectively evaluate the safety of the floating slab track system of the isolated damping pad when the train passes, that is, the maximum vertical displacement of the track when the train passes, it may not be used to accurately evaluate the safety of the isolated damping pad floating slab track system. Real vibration damping effect of vibration pad floating slab track system

Method used

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Embodiment Construction

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0050]Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wit...

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Abstract

The invention provides a dynamic stiffness design method, and relates to the technical field of rail transit vibration damping rail design. The dynamic stiffness design method is suitable for design of the dynamic stiffness of a vibration damping pad of an isolated floating plate rail system. The design method includes the steps that the dynamic stiffness of the vibration damping pad within the preloading load and preset frequency range is tested, according to the dynamic stiffness, the inherent frequency of a floating plate rail of the isolated floating plate rail system is calculated, the construction quality or maintenance quality of the floating plate rail is inspected according to the inherent frequency, and / or the vibration damping effect of the floating plate rail is evaluated. According to the dynamic stiffness design method, quick inspection and scientific evaluation of the construction quality or maintenance quality of the floating plate rail can be achieved, and meanwhile, the real vibration damping effect of the floating plate rail can also be evaluated.

Description

technical field [0001] The invention relates to the technical field of rail traffic damping track design, in particular to a dynamic stiffness design method. Background technique [0002] In the traditional design method of the dynamic stiffness of all polymer material vibration-damping pads for isolated floating slab tracks in the past, the secant static stiffness and its dynamic-static stiffness ratio measured on the vibration-damping pads within the service load range are generally used to design them. That is to say, only the secant dynamic stiffness within the service load range on the vibration damping pad is used to simultaneously calculate and analyze the safety and vibration reduction indicators of the floating slab track system of the isolated vibration damping pad. [0003] This type of traditional design method only tests the dynamic stiffness of a single preload, that is, the weight of rails, fasteners and track slabs on the damping pad + half of the vehicle loa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B19/00
CPCE01B19/003
Inventor 韦凯张厚贵罗信伟赵泽明吴琼李平王显尹华拓李昕成芳
Owner SOUTHWEST JIAOTONG UNIV
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