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Shaking table tests of the seismic response of a utility tunnel with a joint connection

机译：联合连接的公用工程隧道地震响应的振动台测试

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摘要

A utility tunnel is characterized by a large span and segmental underground structure, which will produce many joint connections in the practical engineering. The existence of joints will reduce the stiffness and integrity of the structure, and eventually influence the safety of the structure. In this paper, a series of shaking table tests of utility tunnels with and without a joint connection were conducted to assess the effects of a joint on the seismic behavior. Three types of earthquake waves under uniform excitation (the same excitation at different points of the ground) in the transverse direction were input. The results show that the structure without a joint connection presented a more significant acceleration response and horizontal soil pressure response than that with a joint connection. The peak strain and bending moment would be reduced with a joint connection. The relative displacement at two sides of the joints was very small under various types of earthquake waves, and only a small value of rotation angle was produced, indicating the insignificant response of joint deformation.
机译：公用事业隧道的特点是跨度大，分段地下结构，在实际工程中会产生许多接头。接头的存在会降低结构的刚度和完整性，并最终影响结构的安全性。在本文中，进行了具有和不具有节理连接的公用工程隧道的一系列振动台试验，以评估节理对地震行为的影响。输入沿横向均匀激励（在地面不同点处相同的激励）的三种类型的地震波。结果表明，没有接头的结构比具有接头的结构具有更显着的加速度响应和水平土压力响应。通过连接可以减小峰值应变和弯矩。在各种类型的地震波作用下，接头两侧的相对位移非常小，仅产生很小的旋转角值，表明接头变形的响应不明显。

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