列车荷载作用下联络横通道对平行交叉盾构隧道振动影响机制的试验研究

doi:10.13722/j.cnki.jrme.2021.0276

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Abstract Two adjacent tunnels which connected by a transverse passage are widely used in urban subways. The dynamic response of the special structure section is more prominent under the train vibration load. Two parallel cross shield tunnel models with and without transverse passages were carried out in this paper. The dynamic response characteristics of parallel cross shield tunnel under train load were studied. The influence mechanism of cross passage on the vibration response of two main tunnels was explored. Results show that the existence of the cross passage will reduce the dynamic response of the tunnel where the train load is located，and its influence range is about twice the width of the cross passage. While，For another adjacent main tunnel，when the center frequency is lower than 125 Hz，the one-third octave frequency of the lining structure increases due to the existence of the cross passage，and the lower the frequency is，the greater the impact is. The influence mechanism of the cross passage on the vibration response of the two main tunnels is as follows：Since the integrity and compactness of the cross passage is much higher than that of the soil，the vibration wave generated by the train load in the cross passage has a lower loss than the soil. Moreover，the lower the frequency of the vibration wave is，the faster the loss during the wave propagation process is.

Key words： tunnelling engineering transverse passage train vibration load parallel cross shield tunnel dynamic response one-third octave frequency

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	Articles by authors
	YAN Qixiang1
	WANG Erli1
	ZHANG Junchen1
	SUN Minghui1
	YAO Chaofan1
	CHEN Wenyu2

Cite this article:

YAN Qixiang1,WANG Erli1,ZHANG Junchen1, et al. Experimental study on the mechanism of the influence of transverse passage on vibration response of parallel cross shield tunnel under train load[J]. , 2022, 41(S1): 2892-2900.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0276 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/IS1/2892

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