A thermal shield tunnel fixing bracket

Abstract

The invention provides a heating power shield tunnel fixing support which is distributed on the inner wall of a tunnel. The heating power shield tunnel fixing support comprises three rings of continuous prefabricated reinforced concrete segments. Lining steel plate strips are arranged inside the three rings of segments, outer plate surfaces of the lining steel plate strips and inner plate surfaces of the segments are matched in shape, anchor bars are evenly distributed outside the lining steel plate strips for mutual fixation, and fixing support vertical columns for supporting a water supply pipeline and a water return pipeline are arranged inside the steel plate strips of every two adjacent rings of prefabricated concrete segments. According to the heating power shield tunnel fixing support, it can be guaranteed that a heating power pipeline can move in the axial direction, and axial or lateral horizontal thrust generated to the inner wall of the tunnel can be effectively supported.

Description

technical field [0001] The invention belongs to the technical field of tunnel pipelines, in particular to a thermal shield tunnel fixing bracket. Background technique [0002] With the development of cities in our country, central heating has become an important way of urban heating, and the construction of thermal tunnels to centrally arrange thermal pipelines has become the preferred way of urban central heating. However, due to the fact that most of the urban ground space in our country is relatively precious, and the underground space is gradually saturated after being developed for various purposes, the available space is extremely limited, and the development of the second floor space has become an important issue that must be faced in the construction of thermal tunnels. . [0003] With the aging of the old heat pipes and the need for the layout of new heat pipe networks, there will continue to be heat tunnels that need to be dug in the city for a period of time. In...

AI Technical Summary

Problems solved by technology

[0004] In order to avoid any displacement of the thermal pipeline, the existing thermal shield tunnels are usually equipped with brackets that can penetrate into the thermal pipelines. Usually, the existing fixed brackets have a relatively simple structure and are directly poured with the tunnel segments. Concrete molding cannot effectively ensure stability for a long time, and when it is necessary to repair and replace the bracket or adjust the position of the bracket, it will bring great inconvenience and may cause certain damage to the concrete structure of the segment, affecting the tunnel segment The overall support strength, so which structure of the support and the connection method with the tunnel segment are used to bear the lateral thrust of the thermal pipeline, so that the thermal pipeline can limit the displacement in all directions, and at the same time, the support can effectively assist in bearing the above-mentioned other The support of the force has become one of the technical problems of the current shield tunnel engineering quality

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