A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Steel rail dynamic vibration absorber and application thereof
A steel rail dynamic vibration absorber comprises an assembly type phononic crystal structure, the assembly type phononic crystal structure is composed of a plurality of assembly type elements, and phononic crystal units are distributed and arranged in a base body structure of each assembly type element to form a phononic crystal periodic structure. The matrix structure forms a framework foundation in which phononic crystal units are distributed and arranged, and the phononic crystal periodic structure absorbs vibration and noise of a certain frequency band by utilizing band gap characteristics of the phononic crystal periodic structure. The steel rail vibration absorber generates a band gap in a frequency band range of 50-3000Hz, and can cover main frequencies of various vibrations, so that the vibration of the steel rail is quickly attenuated. The mounting or dismounting efficiency of the vibration absorber can be improved, and the vibration and noise reduction effect is adjusted bychanging the parameters of the periodic structure; and the vibration and noise reduction effects are enhanced by utilizing the band gap characteristic of the phononic crystal structure. The method canbe widely applied to ballasted and ballastless track lines of urban rail transit, high-speed railways, heavy haul railways, common railways and intercity railways.
一种钢轨动力吸振器，包括装配式声子晶体结构，所述装配式声子晶体结构由若干装配式元件组成，每个装配式元件在其基体结构中分布排列声子晶体单元以组成声子晶体周期性结构；所述基体结构组成声子晶体单元分布排列的骨架基础，所述声子晶体周期性结构利用其带隙特性吸收一定频带的振动和噪声。所述钢轨吸振器产生50～3000Hz频带范围内的带隙，能够覆盖各类振动的主频，使钢轨的振动快速衰减。本发明可以提高吸振器的安装或拆卸效率，并通过改变周期性结构的参数调整减振降噪效果；利用声子晶体结构的带隙特性，增强减振降噪作用。本发明可以广泛应用于城市轨道交通、高速铁路、重载铁路、普通铁路和城际铁路的有砟和无砟轨道线路。
Steel rail dynamic vibration absorber and application thereof
A steel rail dynamic vibration absorber comprises an assembly type phononic crystal structure, the assembly type phononic crystal structure is composed of a plurality of assembly type elements, and phononic crystal units are distributed and arranged in a base body structure of each assembly type element to form a phononic crystal periodic structure. The matrix structure forms a framework foundation in which phononic crystal units are distributed and arranged, and the phononic crystal periodic structure absorbs vibration and noise of a certain frequency band by utilizing band gap characteristics of the phononic crystal periodic structure. The steel rail vibration absorber generates a band gap in a frequency band range of 50-3000Hz, and can cover main frequencies of various vibrations, so that the vibration of the steel rail is quickly attenuated. The mounting or dismounting efficiency of the vibration absorber can be improved, and the vibration and noise reduction effect is adjusted bychanging the parameters of the periodic structure; and the vibration and noise reduction effects are enhanced by utilizing the band gap characteristic of the phononic crystal structure. The method canbe widely applied to ballasted and ballastless track lines of urban rail transit, high-speed railways, heavy haul railways, common railways and intercity railways.
一种钢轨动力吸振器，包括装配式声子晶体结构，所述装配式声子晶体结构由若干装配式元件组成，每个装配式元件在其基体结构中分布排列声子晶体单元以组成声子晶体周期性结构；所述基体结构组成声子晶体单元分布排列的骨架基础，所述声子晶体周期性结构利用其带隙特性吸收一定频带的振动和噪声。所述钢轨吸振器产生50～3000Hz频带范围内的带隙，能够覆盖各类振动的主频，使钢轨的振动快速衰减。本发明可以提高吸振器的安装或拆卸效率，并通过改变周期性结构的参数调整减振降噪效果；利用声子晶体结构的带隙特性，增强减振降噪作用。本发明可以广泛应用于城市轨道交通、高速铁路、重载铁路、普通铁路和城际铁路的有砟和无砟轨道线路。
Steel rail dynamic vibration absorber and application thereof
一种钢轨动力吸振器及其应用
YANG XINWEN (author) / ZHAO ZHIJUN (author) / MA KUIKUI (author) / ZHANG ZHAO (author)
2021-03-26
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
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