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Method and system for predicting environmental vibration caused by urban rail transit

A technology of urban rail transit and prediction method, applied in the field of urban rail transit, can solve problems such as environmental pollution

Pending Publication Date: 2021-04-23
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ground vibration and structural noise will pollute the environment. How to predict the environmental vibration caused by urban rail transit has become a technical problem that needs to be solved urgently.

Method used

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  • Method and system for predicting environmental vibration caused by urban rail transit
  • Method and system for predicting environmental vibration caused by urban rail transit
  • Method and system for predicting environmental vibration caused by urban rail transit

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[0053] 1. Test background

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Abstract

The invention discloses a method and a system for predicting environmental vibration caused by urban rail transit. The method comprises the steps: obtaining the vibration speeds of simply supported concrete box girders of an urban rail transit elevated train at different speeds; performing spectral analysis on the vibration speed to obtain an analysis result; calculating according to the train track bridge coupling analysis model to obtain a frequency spectrum result; comparing the analysis result with the frequency spectrum result, and discovering that a first peak frequency related to a structure predicted according to a theoretical formula corresponds to a second frequency related to a periodic excitation frequency; and predicting environmental vibration caused by urban rail transit. According to the method, the physical significance of the peak frequency of the test beam within the 100 Hz range is explained, and environmental vibration caused by urban rail transit is predicted.

Description

technical field [0001] The invention relates to the technical field of urban rail transit, in particular to a method and system for predicting environmental vibration caused by urban rail transit. Background technique [0002] When the train runs on the city track, the wheel-rail interaction will generate vibration, which will be transmitted to the ground along the pier. However, ground vibration and structural noise will pollute the environment. How to predict the environmental vibration caused by urban rail transit has become a technical problem that needs to be solved urgently. Contents of the invention [0003] The purpose of the present invention is to provide a method and system for predicting environmental vibration caused by urban rail transit, to explain the physical meaning of the peak frequency within 100 Hz of the test beam, and to predict the environmental vibration caused by urban rail transit. [0004] To achieve the above object, the present invention prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G06F30/13G06Q10/04
Inventor 胡斌史吏
Owner ZHEJIANG UNIV OF TECH
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