Shield tunnel line segment lining structural stiffness gear-drive reinforcing device

Abstract

The invention relates to a shield tunnel line segment lining structural stiffness gear-drive reinforcing device, comprising a fixed end (1), a loading end (4), a reinforcing tie rod (3) and a releasable loading lever (2), wherein the fixed end (1) and the loading end (4) are fixedly connected to adjacent pipe rings respectively; the fixed end (1) is connected with the loading end (4) through the reinforcing tie rod (3). The reinforcing tie rod (3) comprises a fixed end reinforcing tie rod (31), a loading end reinforcing tie rod (33) and a release sleeve (32), and two threads matching respectively with external threads of the fixed end reinforcing tie rod (31) and loading end reinforcing tie rod (33) are arranged in the release sleeve (32); one end of the loading end reinforcing tie rod (33) is provided with an external thread matching with an internal thread of the release sleeve (32), and the other end of the loading end reinforcing tie rod (33) is a loading rack and barbed racks on its two sides.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and relates to a gear transmission strengthening device for rigidity of pipe ring structure in a straight section of a shield tunnel. Background technique [0002] Shield tunnel lining is generally assembled by prefabricated segments at the end of the shield. The indirect joints of the segments are divided into longitudinal joints and circumferential joints, and the joints are the weak links of the lining structure. The integrity of the adjacent pipe ring structure of the shield tunnel is mainly maintained by the bolts between the rings. During the construction project, longitudinal deformation will occur due to various reasons, including the vibration load of the trolley, leakage, different geology, different buried depths, and different constructions. Various factors such as different factors, constraint differences, different ground loads, and different surrounding environmental cha...

AI Technical Summary

Problems solved by technology

The domestic and foreign studies on the stiffness of lining pipe ring joints mainly focus on different loads, different bolt preloads, different bolt numbers, different cushion thicknesses, and different joint forms. After that, the stiffness of the lining structure can be enhanced by actively increasing the internal force between adjacent segments, and the internal force can be unloaded in the later stage of construction. Therefore, it is urgent to develop an active reinforcement device for the stiffness of the lining structure, which can strengthen the stiffness of the lining structure and its Integrity, protecting the building boundaries of the tunnel structure from encroachment

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