Shield tunnel T-shaped seam dynamic slab staggering water pressure resistance simulation test device and method

Abstract

The invention discloses a shield tunnel T-shaped seam dynamic slab staggering water pressure resistance simulation test device and method. The device is characterized in that: a right-angle plate is embedded into grooves of right-angle plate shells; the top surface of a flat plate is connected with a flat plate shell through linear guide rails; two right-angle plate shells and the flat plate shell are fixed through connecting bolts; the right side surface of the flat plate directly faces a jack head; sealing gaskets in two annular grooves, namely the inner groove and the outer groove, on the working surfaces of the right-angle plate and the flat plate are respectively and correspondingly aligned; a water inlet pipe and an exhaust pipe respectively penetrate through the right-angle plate shells and a vertical plate of the right-angle plate in sequence and are communicated with an area enclosed by the inner groove of the vertical plate of the right-angle plate; and a water pressure gauge is communicated with the area between the inner groove and the outer groove in a right-angle plate transverse plate, and a transverse plate working face water guide groove outside a right-angle plate outer groove is communicated with the right-angle plate outer shell transverse shell water guide groove. The device can simply and conveniently simulate the dynamic slab staggering of a shield tunnel in a large range, is close to the actual tunnel slab staggering working condition, and can provide more accurate and reliable test basis for the waterproof design, construction and maintenance of the T-shaped seam.

Description

technical field [0001] The invention relates to a water pressure-resistant simulation test device for a shield tunnel segment rubber sealing gasket. Background technique [0002] The shield tunnel is a cylindrical structure formed by assembling a plurality of segments circumferentially into a ring, and then longitudinally splicing segment rings with segment rings. There are a large number of longitudinal seams (the gaps between adjacent segments in the same ring) and annular seams (annular gaps between segment rings) in shield tunnels. There are sealing grooves on the contact surface of the longitudinal seam (the side of the segment) and the contact surface of the annular seam (the side of the segment ring), and a gasket is installed on the sealing groove, and the tops of the opposite gaskets are in contact with each other Extruded to realize the waterproofing of the shield tunnel. [0003] In order to ensure the strength of the tunnel structure, the longitudinal seams of ...

AI Technical Summary

Problems solved by technology

This leads to poor reliability and low accuracy of the test data, which in turn affects the safety of the long-term service of the tunnel and poses a serious threat to the social economy and the personal safety of the people.

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