High-performance durable shield segment lining structure for sea area corrosive environment

Abstract

The invention relates to a high-performance durable shield segment lining structure for a sea area corrosion environment. The structure comprises high-performance concrete segments, tenon-shaped connectors, high-performance corrosion-resistant bolts, multiple waterproof systems and the like, wherein the high-performance concrete segments are connected and fixed through the high-performance corrosion-resistant bolts, splicing is controlled annularly through the tenon-shaped connectors, and the joints are sealed and waterproof through the multiple waterproof systems; and a reinforced grouting system is arranged between the back of the high-performance concrete segments and a stratum, and reserved reinforcing spaces are arranged on the inner sides of the high-performance concrete segments. According to the structure, the durability of the whole system of seabed shield tunnel lining materials, connection, waterproofness, construction quality and the like can be improved, the structural bearing capacity is met, the good waterproofness of a connector is achieved, the shield segment lining construction quality is remarkably improved, the corrosion resistance is enhanced, the good durability is achieved, and the safe service of a seabed shield tunnel within the designed service life is ensured.

Description

technical field [0001] The invention belongs to the technical field of tunnel and underground engineering design and construction, and in particular relates to a high-performance and durable shield segment lining structure in a sea area corrosion environment. Background technique [0002] At present, subsea tunnels are still in their infancy in my country, and the construction methods used are mainly shield method and mining method. For subsea tunnels constructed by the shield method, the tunnel structure is buried in the soil below the seabed, and the tunnel structure is affected by the harmful media in the contacted soil, groundwater and marine climate, especially under the combined influence of load and environment , the properties of materials and even structures degrade and deteriorate over time. The chemical composition of the groundwater in the subsea tunnel sea area and near the sea is similar to that of seawater, and the content of chloride ions is basically the sa...

AI Technical Summary

Problems solved by technology

The main reason is that the joints in the construction stage are staggered, and the waterproofing of the shield joints fails to cause water leakage, which in turn corrodes the segment connecting bolts and the concrete lining.

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