Prefabricated concrete pipe piece with internal light filling body and prefabricating method

Abstract

The invention relates to a prefabricated concrete pipe piece with an internal light filling body and a prefabricating method. The prefabricated concrete pipe piece with the internal light filling bodyand the prefabricating method are applied to underground engineering constructed by adopting a prefabricating assembling method. The prefabricated concrete pipe piece is characterized by comprising apipe piece framework, the light filling body arranged in the pipe piece framework and a pipe piece body formed by layering pouring of concrete; and the light filling body is arranged in the extendingdirection of the pipe piece framework and is fixed through a hook on the pipe piece framework. Compared with the prior art, the prefabricated concrete pipe piece with the internal light filling bodyand the prefabricating method have the beneficial effects that the weight of the pipe piece is reduced, the single piece size of the prefabricated pipe piece is increased under the condition that theself weight of the pipe piece is not increased, the pipe piece construction convenience is improved, the construction efficiency can be effectively improved, raw materials are saved, the constructioncost is saved, resource losses are reduced, green construction is achieved, and influences to the environment are reduced.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a prefabricated concrete segment with a built-in lightweight filling body and a prefabrication method. Background technique [0002] Based on the good mechanical properties and economical characteristics of steel (fiber) reinforced concrete materials, prefabricated assembled segments are used as tunnels for bearing structures, including rail transit, highway tunnels, railway tunnels, municipal pipelines, etc. The most commonly used segments are steel ( fiber) reinforced concrete segments. Different from the ribbed structure of the steel pipe segment, the steel (fiber) reinforced concrete segment is generally cast as a solid body, resulting in a large self-weight of the segment, and a large restriction on the size of the segment for assembly, which in turn causes segment rings and tunnels per unit length. There are many joints in the segment, which not only affects the ...

AI Technical Summary

Problems solved by technology

Different from the ribbed structure of the steel pipe segment, the steel (fiber) reinforced concrete segment is generally cast as a solid body, resulting in a large self-weight of the segment, and a large restriction on the size of the segment for assembly, which in turn causes segment rings and tunnels per unit length. There are many joints in the segment, which not only affects the structural force, but also increases the risk of tunnel water leakage during operation due to the large number of joints. Therefore, the steel (fiber) reinforced concrete segments for tunnel assembly urgently need to be optimized and improved

At the same time, the concrete cracks generated during the construction and operation of the concrete structure will reduce the bearing capacity of the segment structure and affect the durability of the segment structure

The tunnel segment structure has a large amount of reinforcement, which often makes it difficult to pour the segment

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