Tunnel reinforcing device based on fiberglass pipe segments and construction method thereof

Abstract

The invention belongs to the technical field of tunnel reinforcing protection and discloses a tunnel reinforcing device based on fiberglass pipe segments and a construction method thereof, and the tunnel reinforcing device is suitable for an existing operating subway tunnel. The tunnel reinforcing device comprises fiberglass pipe rings and a longitudinal connecting plate, wherein the fiberglass pipe rings are used for reinforcing the tunnel in the ring direction, and the longitudinal connecting plate is used for longitudinal fixing; each fiberglass pipe ring comprises a supporting frame and two supporting frame fixing seats, wherein the supporting frame is formed by assembling a plurality of arc-shaped supporting fiberglass plates in the circumferential direction, and the bottoms of the left side and the right side of the supporting frame are supported by the supporting frame fixing seats correspondingly; the multiple arc-shaped supporting fiberglass plates and the two supporting frame fixing seats are evenly distributed on the same cross section of the tunnel, so that the reinforcing fiberglass pipe rings are connected into a whole; and according to the construction method of the tunnel reinforcing device based on the fiberglass pipe segments, through the fiberglass pipe rings, the existing operating subway tunnel pipe segments are reinforced in the ring direction, and the fiberglass pipe rings are combined into a whole through the longitudinal connecting plate to longitudinally reinforce the tunnel pipe segments. According to the tunnel reinforcing device based on the fiberglass pipe segments and the construction method thereof, the anti-deformation capacity of the tunnel is improved, occurrence of lining diseases in the tunnel is reduced, and driving safety and the service life of the tunnel are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of tunnel reinforcement and protection, and in particular relates to a glass fiber segment-based tunnel reinforcement device suitable for existing subway tunnels in operation and a construction method thereof. Background technique [0002] In recent years, with the development of urbanization in our country, subway construction projects are in full swing in major cities. At present, 19 urban subway projects are under construction in my country, and about 13 urban subway projects are under planning. However, due to structural principal and secondary stresses, uncoordinated deformation, gaps between the back of the lining and the soil, and uneven settlement, a considerable proportion of the linings of existing operating shield tunnels suffer from excessive deformation. Taking the impact of tunnel excavation on the existing tunnel between Fuxing Road Station and Huaihai Road Station of Shanghai Rail Transit Li...

AI Technical Summary

Problems solved by technology

However, the reinforcement, transportation and construction of steel pipe sheets consume a lot of human resources, the construction period is long, the reinforcement cost is high, and the construction is inconvenient. It has a great impact on the structure and shape of the tunnel itself, and the steel pipe sheets are poor in corrosion resistance and easy to damage

However, due to the characteristics of low strength, high compressibility, high sensitivity and rheological properties of the soil layer in the soft soil area, the grouting reinforcement construction is not easy to control, and the situation of grout running, grout leakage and partial grout often occurs, causing additional damage to the tunnel structure impact, but aggravated the occurrence of lining diseases

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