Abstract Transverse passages are ubiquitous in urban subways, and they pose serious mutual threats to the two adjacent tunnels they connect. In this paper, the frequency sweep loads were applied in model tests and the influence mechanism of integral transverse passage (ITP) was studied by using the one-third octave of the frequency response function (FRF). Subsequently, a new assembled transverse passage (ATP) was proposed and its vibration attenuation effect was studied. The results showed that, when the frequency sweep load is applied to one tunnel, the adjacent tunnel is more susceptible to a load that has a central frequency of 12.5–80 Hz due to the existence of ITP. The closer the loading frequency is to 31.5 Hz, the greater the impact on the adjacent tunnel becomes. When an ATP is used, the vertical acceleration level (VAL) of the tunnel to which the load is applied will increase by 1.3 dB, while that of the adjacent tunnel will decrease by 7.2 dB, and the transverse passage will decrease by 8.7 dB. Compared to the ITP, when the lining structure of an adjacent tunnel is closer to the ATP, the reduction in the vibration response of the structure is more pronounced, and the vibration response is reduced over a larger central frequency range.

中文翻译：

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组合式横向通道连接的两条平行盾构隧道减振试验研究

摘要 横向通道在城市地铁中无处不在，它们对连接的两条相邻隧道构成严重的相互威胁。本文将扫频载荷应用于模型试验，并利用频率响应函数(FRF)的三分之一倍频程研究了整体横向通道(ITP)的影响机制。随后，提出了一种新的组装式横向通道（ATP），并研究了其减振效果。结果表明，当对一条隧道施加扫频载荷时，由于ITP的存在，相邻隧道更容易受到中心频率为12.5-80Hz的载荷的影响。加载频率越接近31.5Hz，对相邻隧道的影响就越大。当使用 ATP 时，受载隧道垂直加速度值（VAL）增加1.3dB，相邻隧道降低7.2dB，横向通道降低8.7dB。与ITP相比，当相邻隧道的衬砌结构靠近ATP时，结构振动响应的降低更为明显，并且振动响应在更大的中心频率范围内降低。