In order to evaluate the influence of aerodynamic
effect on internal and external environment of station when train passes
through the semiunderground station with speed of 350 km/h, and provide a reference
for the design of station and connection tunnel, the variation rules of air
pressure, wind speed in the platform area and micro pressure wave outside the
station are studied by the computational model of aerodynamic effects built by
overset mesh technology under the working conditions of upgoing, downgoing, allunderground section and semiunderground
section. The results show that: (1) The pressure fluctuation degree of
underground area is more severe than that of semiunderground
area. (2) Under the condition of upgoing, the pressure
fluctuation of underground platform area is the most severe and the peak value
of pressure fluctuation and transient pressure reaches maximum, but both are
less than the evaluation standard. (3) Under the condition of allunderground section, wind speed of platform area reaches maximum,
but the maximum wind speed does not exceed 5.0 m/s. (4) When the up train
passes through, micro pressure wave will be generated near junction of
underground section and semiunderground section, and
the buildings within 50 m should consider the influence of micro pressure.
JIANG Yao, LI Kui, HU Wei, TAN Xinrong
. Study on Influence of Aerodynamic Effect on Semiunderground Station of Highspeed Railway
with 350 km/h[J]. Tunnel Construction, 2020
, 40(S1)
: 187
-193
.
DOI: 10.3973/j.issn.2096-4498.2020.S1.023
