The paper presents a methodology of finite element (FE) modelling and simulation of the bridge – track – moving
high-speed train system using CAE systems. Two composite (reinforce-concrete – steel) bridges were considered. The
span length was equal to 15 and 21 meters, respectively. Bridges selected for the study belong to the proposed series of
bridges with the span length of 15 to 27 meters stepped by 3 meters. Full symmetry of the bridges was assumed. RC platform
was homogenized since the rebars were distributed quasi-uniformly in the specified platform sections. The FE model of
a bridge superstructure consisted of 4-node shell elements (main beams) and 8-node 48 DOF solid elements (reinforced
concrete platform). RAIL_TRACK and RAIL_TRAIN LS-DYNA’s modules were applied for simulating the moving train
– track interaction. Ballasted track with the rectilinear rail-line axis was taken into consideration. German ICE-3 train
running at velocity of 200–300 km/h was selected as a representative for the study. All mass components of the train FE
model were treated as rigid bodies. Symmetric vibrations of the train units were assumed with respect to the main
longitudinal vertical plane of symmetry of the system. Nodal displacement and longitudinal normal stress in shell
elements were registered during the FE analysis. The results were depicted in the form of time histories for selected
velocities. In addition, extreme values of vertical deflections and normal stress were compiled and presented a function of
train velocity. It allowed to assess the dynamic response of the bridge depending on its span length. Contours of resultant
displacement for the RC platform was also presented.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00