Experimental Pressure Wave Research at NLR for High-Speed Rail Tunnels

摘要

Pressure waves, that are generated when a high speed train enters a tunnel, can211u001ecause annoyance to train passengers (rapid pressure fluctuations acting on the 211u001etrain) and for people living near the tunnel (micro-pressure wave). To improve 211u001etrain passenger comfort the effect of various pressure relieving measures (i.e. 211u001eshafts and porous walls) were investigated in a sub-scale test. A 1/175 scaled 211u001emodel of a double tracked underwater tunnel planned for the high speed train link 211u001ebetween Amsterdam and Paris, was used. Train models were launched with a facility 211u001eworking according to the air gun principle. Tunnel wall pressure histories 211u001egenerated by the train model were measured. These test results are compared with 211u001ethose predicted by the THERMOTUN/4 calculation method.