Publication detail

Bridge analysis structure under human induced dynamic load

KRATOCHVÍL, O. KRIŽAN, J.

Original Title

Bridge analysis structure under human induced dynamic load

Type

journal article - other

Language

English

Original Abstract

The paper deals with the analysis of the dynamic response of footbridges under human – induced dynamic loads. This is a frequently occurring and often dominant load for footbridges as it stems from the very purpose of a footbridge – to convey pedestrian. Due to the emergence of new materials and advanced engineering technology, slender footbridges are increasingly becoming popular to satisfy the modern transportation Leeds and the aesthetical requirements of the society. These structures however are always lively with low stiffness, low mass, low damping and low natural frequencies. As a consequence, they are prone to vibration induced by human activities and can suffer severe vibration serviceability problems, particularly in the lateral direction. Pedestrian bridges are designed according to first and second limit states, these are the criteria involved in response to static design load. However, it is necessary to assess the dynamic response of bridge design load on pedestrians and assess it impact on the comfort of the user movement. Usually the load is considered a person or a small group which can be assumed in perfect motion synchronization. Already one person or small group can excite significant vibration of the deck. In order to calculate the dynamic response to the movement of people, designer needs available and suitable computational model and criteria. For the calculation program ANSYS based on finite element method was used.

Keywords

Footbridge, dynamic analysis, vibration serviceability of footbridges, lateral vibration, stiffness, dynamic force, walking force, slender suspension footbridges, natural frequencies and vibration modes, rhythm jumping, normal walking.

Authors

KRATOCHVÍL, O.; KRIŽAN, J.

RIV year

2012

Released

15. 10. 2012

Location

Bali, Indonésie

ISBN

2010-376X

Periodical

World Academy of Science, Engineering and Technology

Year of study

1

Number

70

State

Republic of Indonesia

Pages from

1059

Pages to

1064

Pages count

6

BibTex

@article{BUT97362,
  author="Ondřej {Kratochvíl} and Jiří {Križan}",
  title="Bridge analysis structure under human induced dynamic load",
  journal="World Academy of Science, Engineering and Technology",
  year="2012",
  volume="1",
  number="70",
  pages="1059--1064",
  issn="2010-376X"
}