Large-span bridge pre-camber setting method

The invention discloses a large-span bridge pre-camber setting method, which comprises the following steps of: constructing a vehicle-rail-bridge coupling dynamic model, then setting a plurality of pre-camber design curves with different amplitudes as input excitation of the model, obtaining and ana...

Full description

Saved in:
Bibliographic Details
Main Authors ZHAI WANMING, ZHU BIN, ZHANG ZHENG, LI RUOYU, YANG JIANJIN, LI QIUYI, ZHU SHENGYANG, HE QINGLIE, YAN JUNFENG, CAI CHENGBIAO
Format Patent
LanguageChinese
English
Published 07.07.2023
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:The invention discloses a large-span bridge pre-camber setting method, which comprises the following steps of: constructing a vehicle-rail-bridge coupling dynamic model, then setting a plurality of pre-camber design curves with different amplitudes as input excitation of the model, obtaining and analyzing each dynamic index through simulation calculation, and obtaining a first pre-camber curve for offsetting a train dynamic load; establishing a bridge finite element model, obtaining a range of bridge temperature load and joint probability distribution, determining a temperature load combination working condition according to the range of the temperature load, calculating temperature-induced deformation through the combination working condition, and obtaining a second pre-camber curve for counteracting the temperature-induced deformation of the bridge; the bridge shrinkage and creep deformation amplitude within the service life of the bridge is calculated through the bridge finite element model, a third pre-ca
Bibliography:Application Number: CN202310220536