A connection method and intelligent monitoring device for immersed tube tunnel joints

Abstract

The invention discloses an immersed tube tunnel joint connection method and an intelligent monitoring device. The key points of the technical solution are a protruding hinge at the joint of two lining segments and a displacement monitoring device group. The protruding hinge is fixed at the junction of two concrete-lined pipes, and a vulcanized EPDM rubber elastic gasket is arranged inside the junction, and polysulfide sealant is coated on the outside of the corresponding hinge bolts between the joints; the displacement monitoring The device group includes a plurality of displacement monitoring devices and a monitoring host, and the devices are pre-embedded on the tunnel segment. In the present invention, the protruding hinge is fixed at the joint of two concrete lining pipes, and the deformation margin of the tunnel is enhanced by expanding the deformation space, buffering, and hinged comprehensive design, which can accommodate a large amount of misalignment. By adding an intelligent monitoring system Risk prevention is carried out by monitoring the displacement degree in real time. In addition, adding two waterproof measures has certain reference value for problems such as water seepage. The invention relates to the field of pipeline laying.

Description

technical field [0001] The invention relates to the field of pipeline laying, in particular to a novel splicing technology of immersed tube tunnel joints and an intelligent detection device and method installed at the tunnel joints. Background technique [0002] The joint of the immersed tube tunnel is the weakest link in the whole structure, and its stiffness and deformation characteristics are crucial to the safety of the structure. When the stiffness of the underlying strata of the tunnel is not uniform, the deformation of the joint will be more complicated. my country's terrain structure is complex and geological disasters are serious. Tunnels buried underground will inevitably pass through ground fissures or complex geological sections with many structural planes. The surrounding rock structural planes in these sections have low strength and discontinuous mechanical properties. This complex stress situation will lead to uneven stress on all parts of the tunnel, and the ...

AI Technical Summary

Problems solved by technology

However, when the final joint is docked with the immersed tubes at both ends, the distance between the docking surfaces is small, and the measurement accuracy is required to be high.

The use of retractable mechanical displacement sensors for measurement has more mechanical structures, and the reliability is not strong. Once a fault occurs or the distance measurement deviates, it is very likely to damage the final joint, or even cause irreparable consequences.

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