Detail publikace

Dynamická analýza mostní konstrukce zatížené pohybem osob s důrazem na vodorovné zatížení

KRATOCHVÍL, O. MARTINÁSEK, J.

Originální název

Dynamická analýza mostní konstrukce zatížené pohybem osob s důrazem na vodorovné zatížení

Anglický název

Bridge analysis structure under human induced danamic load with an emphasis on the horizontal load

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

čeština

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

anylýza, mostní konstrukce, pohyb osob, vodorovné zatížení

Klíčová slova v angličtině

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.

Autoři

KRATOCHVÍL, O.; MARTINÁSEK, J.

Rok RIV

2012

Vydáno

26. 1. 2012

Místo

Brno, Česká republika

ISBN

978-80-214-4393-8

Kniha

Juniorstv 2012

Strany od

1

Strany do

8

Strany počet

8

BibTex

@inproceedings{BUT98436,
  author="Ondřej {Kratochvíl} and Josef {Martinásek}",
  title="Dynamická analýza mostní konstrukce zatížené pohybem osob s důrazem na vodorovné zatížení",
  booktitle="Juniorstv 2012",
  year="2012",
  pages="1--8",
  address="Brno, Česká republika",
  isbn="978-80-214-4393-8"
}