TY - GEN
T1 - Crowd coordination in jumping tests on a model grandstand
AU - Comer, Anthony
AU - Blakeborough, Anthony
AU - Williams, Martin S.
PY - 2008
Y1 - 2008
N2 - It is now widely accepted that concerted human activity such as bobbing and jumping can excite cantilever grandstands which are inherently flexible structures. This fact necessitates the ongoing revision of UK codes and guidelines concerning the design and assessment of modern grandstands. A realistic and accurate crowd load model will be an essential tool in the accurate prediction of the response of such grandstands. To this end, a series of jumping and bobbing tests have been performed on a unique grandstand test rig developed at Oxford University. Group tests have been performed under a variety of conditions in order to assess the levels of crowd coordination and consequently crowd loading achievable. These results will aid the development and calibration of a crowd load model. To date, all tests have been performed on a rigid structure. However, this paper focuses on the influence of structural motion on group coordination levels. In addition, other coordinating factors such as physical contact between individuals by means of arm linking are addressed. Early findings suggest structural motion does not adversely affect crowd coordination levels relative to coordination levels achievable when a group is active on a rigid structure. This observation has significant implications for modern cantilever grandstands. In addition, physical contact such as arm linking between individuals can increase crowd coordination levels.
AB - It is now widely accepted that concerted human activity such as bobbing and jumping can excite cantilever grandstands which are inherently flexible structures. This fact necessitates the ongoing revision of UK codes and guidelines concerning the design and assessment of modern grandstands. A realistic and accurate crowd load model will be an essential tool in the accurate prediction of the response of such grandstands. To this end, a series of jumping and bobbing tests have been performed on a unique grandstand test rig developed at Oxford University. Group tests have been performed under a variety of conditions in order to assess the levels of crowd coordination and consequently crowd loading achievable. These results will aid the development and calibration of a crowd load model. To date, all tests have been performed on a rigid structure. However, this paper focuses on the influence of structural motion on group coordination levels. In addition, other coordinating factors such as physical contact between individuals by means of arm linking are addressed. Early findings suggest structural motion does not adversely affect crowd coordination levels relative to coordination levels achievable when a group is active on a rigid structure. This observation has significant implications for modern cantilever grandstands. In addition, physical contact such as arm linking between individuals can increase crowd coordination levels.
KW - Cantilever grandstands
KW - Dynamic load factors
KW - Human-structure interaction
UR - http://www.scopus.com/inward/record.url?scp=84959879601&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84959879601
T3 - 7th European Conference on Structural Dynamics, EURODYN 2008
BT - 7th European Conference on Structural Dynamics, EURODYN 2008
PB - University of Southampton, Institute of Sound Vibration and Research
T2 - 7th European Conference on Structural Dynamics, EURODYN 2008
Y2 - 7 July 2008 through 9 July 2008
ER -