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張向東1,任 珉2,閆維明3,李秀穎1
(1 中鐵建設(shè)集團有限公司,北京100040;2 廣州大學(xué)工程抗震研究中心,廣州510405;3 北京工業(yè)大學(xué)工程抗震與結(jié)構(gòu)診治北京市重點實驗室,北京100022)[摘要] 地鐵的運營對環(huán)境振動的影響已成為人們普遍關(guān)注的問題,振動波在土層中的傳播規(guī)律是研究中的難點。介紹了毗鄰地鐵的某歌劇院場地地下土層振動現(xiàn)場實測,從速度振級角度分析了地鐵軌道水平面土層中振動的水平和豎向的傳播規(guī)律,并對車速、本底振動以及新型軌道減振措施等對場地振動的影響進行了闡述。
[關(guān)鍵詞] 地鐵;振動;測定;傳播Vibration measurement and analysis of metro train wave under ground
ZhangXiangdong1, RenMin2, YanWeiming3, LiXiuying1
(1 China Railway Construction Group Co., Ltd., Beijing 100040, China; 2 Earthquake Engineering Research Test Center of Guangzhou University, Guangzhou 510405, China; 3 Beijing Key Lab of Earthquake Engineering and Structural Retrofit, Beijing University ofTechnology, Beijing 100022, China)Abstract: Environmental vibration effect due to urban metro train is paid more and more attention nowadays, and the propagation regulation of vibro-wave in soil is a key in this field. The vibration measurement of an opera house near to one metro train line was presented, the horizontal and vertical environment vibration transportation of vibration velocity were then analyzed, and some influence ingredients such as velocity oftrain ,background vibration and new measurement to reduce vibration of rail were expatiated.
Keywords: metro train; vibration; test; transportation