Damage Model of Bridge Bearing and Its Influence on Train-Track-Bridge Dynamic System
نویسندگان
چکیده
Bridge bearing damage is unavoidable in railway engineering. This work presents an investigation on the model of bridge and its influence dynamic responses high-speed train-track-bridge system. Primarily, mathematical description explained detail, which then compared with traditional linear model. Then a 3D considering established based interaction theory. Adopting model, influences single-point-damage multi-point-damage behaviors coupled system are deeply investigated. Results show that calculated obtained by proposed different, especially frequency-domain. Compared to results smaller due additional damping effect. has almost no train vibrations, while great effect vibrations. The z-direction mainly affects vertical y-direction lateral Among all damaged bearings this work, x-direction least fixed larger than other bearings, indicating more attentions should be paid health monitoring
منابع مشابه
Effects of track characteristics on dynamic responses of train-bridge systems
High speed trains are an indispensable part of rapid transportation systems in many countries. As the fastest means of transport on the ground, these trains are extremely sensitive to the terrain and track conditions. Geometrical irregularities and mechanical characteristics of the track, together with inconsistencies in the lane (including bridges that support the track) are considered importa...
متن کاملeffects of track characteristics on dynamic responses of train-bridge systems
high speed trains are an indispensable part of rapid transportation systems in many countries. as the fastest means of transport on the ground, these trains are extremely sensitive to the terrain and track conditions. geometrical irregularities and mechanical characteristics of the track, together with inconsistencies in the lane (including bridges that support the track) are considered importa...
متن کاملVibration isolation analysis of elastic bearing based on train-track-bridge coupled vibration model
ABSTRCT: Elastic bearings have been used on simply supported bridges on high-speed railway in Taiwan to isolate train-induced vibration. However, their influence on dynamic behavior of the vehicle and bridge has not been fully investigated, and their vibration attenuation has not been quantificationally discussed. In this study, spring-damper elements with 12 degrees of freedom are established ...
متن کاملa dynamic model for the interaction of the cable bridge and train system
the vibration of cable-stayed bridges subjected to the passage of high-speed trains is studied in this article. the moving train includes a number of wagons, each of which is modeled as a four-axle system possessing 48 degrees of freedom. the car model is nonlinear and three-dimensional and includes nonlinear springs and dampers of primary and secondary suspensions, dry friction between differe...
متن کاملDynamic Characteristics Analysis of Mats of Ballasted Track on Bridge
A complete vehicle-ballasted track-bridge coupling dynamic model is established. A program to analyze dynamic characteristics is also invented, which is the first time to systematically analyze the dynamic characteristics of vehicles, tracks and bridges when using mats under ballast on the rigid foundation of bridge, in China. The results show that:(1) The mats under ballast are able to reduce ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mechanika
سال: 2022
ISSN: ['2029-6983', '1392-1207']
DOI: https://doi.org/10.5755/j02.mech.30995