Impact analysis of vibration on nearby municipal tunnel induced by metro running

The Journal of Engineering

Di Wu¹  Liyun Tang²  Bochao Wang³  Yingming Wu⁵  Jiami Xi⁶ 

[1] China Railway 20th Bureau Group Co. Ltd, Xi'College of Architecture and Civil Engineering , Xi'an University of Science and Technology , Xi'an, Shaanxi 710016 , People'an, Shaanxi 710054 , People's Republic of China

关键词: Kunming Road Municipal Tunnel;    velocity 108.0 km/h;    vertical vibration;    municipal tunnel wall;    nearby municipal tunnel;    metro tunnel;    velocity 36.0 km/h;    metro-soil–municipal tunnel;    velocity 72.0 km/h;    metro running;    vibration effect;    vibration magnitude;    metro speed;   

DOI  :  10.1049/joe.2018.0082

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

For researching the effect of vibration induced by metro running to normal use of municipal tunnel, the Kunming Road Municipal Tunnel (construction) at Xi'an is taken as a background. Based on the distribution of soil layer in actually engineering and the designing parameter of metro and municipal tunnel, the finite element model of ‘metro-soil–municipal tunnel’ is established under three different positions, and the wheel–rail force at three different speeds (36, 72, and 108 km/h) is simplified by exciting force faction. Then the numerical model is analysed by transient dynamic analysis. The results show that the vibration of municipal tunnel wall is mainly characterised by vertical vibration, which increases sharply with the metro speed improved. The vibration magnitude is greatly affected by relative position between metro and municipal tunnel: the horizontal and vertical vibration magnitude above the position between two metro tunnels is 14.6–20.8% and 55.5–74.6%, respectively, of those at the top of the metro tunnel. Some suggestions are proposed that the vibration effect induced by metro running on normal use of nearby municipal tunnel could be reduced by choosing the reasonable relative position with some corresponding measures according to the metro speed.

【 授权许可】

CC BY