环境工程学报
環境工程學報
배경공정학보
CHINESE JOURNAL OF ENVIRONMENTAL ENGINEERING
2010年
1期
235-240
,共6页
葛勇%张希黔%肖正直%华建明%黄宾
葛勇%張希黔%肖正直%華建明%黃賓
갈용%장희검%초정직%화건명%황빈
无碴轨%环境振动实测%振动分析%环境影响评价
無碴軌%環境振動實測%振動分析%環境影響評價
무사궤%배경진동실측%진동분석%배경영향평개
ballastless track%environmental vibration experiment%vibration analysis%environmental impact assessment( EIA)
对遂渝高速铁路无碴轨道试验段客车运行引起的环境振动进行了现场实测,根据实验数据分析得知:环境振动强度随距离增大而减小,随车速增大而增大,但车厢数量对环境振动强度影响不明显;环境振动主要频率范围为30~120 Hz,距轨道距离、车速、车厢数量对振动主要频率影响不显著;在轨道两侧31.9 m处,速度超过104.7 km/h列车环境振动强度超过GB 10070-1988要求,须采取措施隔振.
對遂渝高速鐵路無碴軌道試驗段客車運行引起的環境振動進行瞭現場實測,根據實驗數據分析得知:環境振動彊度隨距離增大而減小,隨車速增大而增大,但車廂數量對環境振動彊度影響不明顯;環境振動主要頻率範圍為30~120 Hz,距軌道距離、車速、車廂數量對振動主要頻率影響不顯著;在軌道兩側31.9 m處,速度超過104.7 km/h列車環境振動彊度超過GB 10070-1988要求,鬚採取措施隔振.
대수투고속철로무사궤도시험단객차운행인기적배경진동진행료현장실측,근거실험수거분석득지:배경진동강도수거리증대이감소,수차속증대이증대,단차상수량대배경진동강도영향불명현;배경진동주요빈솔범위위30~120 Hz,거궤도거리、차속、차상수량대진동주요빈솔영향불현저;재궤도량측31.9 m처,속도초과104.7 km/h열차배경진동강도초과GB 10070-1988요구,수채취조시격진.
Through measurements of the field vibration induced by trains operation on the Suiyu ballastless track,a lot of acceleration time-history data were obtained. Based on the experimental data, the analytical results suggest that environmental vibration intensity decreases as the rail distance increases, and increases as the train speed increases, but the influence of train carriage numbers on vibration intensity is not obvious. The environmental vibration main frequency range is between 30 Hz to 120 Hz, the influence of distance to rails, speed of train and train carriage numbers on main frequency is not obvious. The environmental vibration levels of train speed over 104.7 km/h exceed the standard requirements given by the Chinese Code for Urban Environmental vibration(GB 10070-1988). It is essential to take the vibration isolation measures in these areas.