수직구 위치에 따른 지하정거장에서의 압력파에 대한 수치적 연구

초록

수직구에 의한 지하정거장 내 압력장의 수치적 연구 오 현 주1, 신 대 용1, 이 상 건1, 김 동 현2, 김 찬 중3* Numerical Study of Pressure Fields in Underground Station with Vent Shaft Hyun Joo Oh, Dae Yong Shin, Sang Gun Lee, Dong Hyun Kim, Charn Jung Kim When the high-speed train passes the underground station, it generates a large pressure wave, which causes the vibration with noise, according to the piston effect. It makes the noise problem with ear discomfortable of the passengers at the high-speed railway underground station. This work is presented the numerical analyzing of the pressure wave's magnitude and tendency by the position of vent shaft In construction and environmental dimensions. We were installed the vent shaft in and out the underground station to reduce the pressure wave. We analyzed pressure field in the underground station by using axis two-dimensional simulation. We determined the boundary and CFD operating conditions by comparing the experimental data and a two-dimensional axis simulation data, which were submitted to Hong Kong university by Kwun hing, Wu, to verify the reliability. And we derived the results that we had been changing the position of vent shaft based on the model of the underground station and the tunnel from A line Daegok station of underground GTX. From the result, we can have a conclusion that the vent shaft's number causes the pressure wave reduction and vent shaft is installed at an intermediate position in the underground station reduced the most large pressure wave. Keywords: 수직구(vent shaft), 지하 정거장(underground station), 소음(noise), 수치해석(numerical study), 압력파(pressure wave)