Hybrid Model for Railroad Bridge Dynamics

Cited 12 time in webofscience Cited 0 time in scopus
  • Hit : 174
  • Download : 0
Railroads carry approximately 40% of the ton-miles of the freight in the United States. On the average, a bridge occurs every 2.25km (1.4mi) of track, making them critical elements. The primary load on the railroad bridges is the train, resulting in numerous models being developed to understand the dynamic response of bridges under train loads. However, because the problem is time-dependent and coupled, developing adequate models is challenging. Most of the proposed models fail to provide a simple yet flexible representation of the train, bridge, and track. This paper proposes a new hybrid model that is effective for solving the track-bridge interaction problem under moving trains. The main approach is to couple the finite-element model of the bridge with a continuous beam model of the track using the assumed modes method. Both single-track and multitrack bridges are considered. The hybrid model is validated against field measurements for a double-track bridge. This model is then used to predict critical train speeds. The results demonstrate that the hybrid model provides an effective and fundamental tool for predicting bridge dynamics subject to moving trains. The flexible feature of the model will allow accommodating more sophisticated vehicle models and track irregularities
Publisher
ASCE-AMER SOC CIVIL ENGINEERS
Issue Date
2016
Language
English
Article Type
Article
Keywords

MOVING LOADS; VEHICLE MODEL; VIBRATION; BEAMS; ELEMENT; TRAIN; SYSTEMS

Citation

JOURNAL OF STRUCTURAL ENGINEERING, v.142, no.10

ISSN
0733-9445
DOI
10.1061/(ASCE)ST.1943-541X.0001530
URI
http://hdl.handle.net/10203/213917
Appears in Collection
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 12 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0