Duct piece whole ring structure and duct piece whole ring prefabricating method

Abstract

The invention relates to a duct piece whole ring structure and a duct piece whole ring prefabricating method. The prefabricating method comprises the following steps that 1, a prefabricating die is assembled, specifically, the prefabricating die is assembled according to a preset duct piece whole ring contour line, a bottom die plate, an inner side die plate, an outer side die plate and a top die plate of the prefabricating die define a pouring ring cavity, a plurality of end plate sets are sequentially arranged in the pouring ring cavity, each end plate set comprises two end plates which are detachably and fixedly assembled together, and any two adjacent end plate sets are oppositely and fixedly assembled together through a middle steel framework; 2, concrete is poured into the pouring ring cavity; and 3, die removal and maintenance are conducted, specifically, the corresponding two end plates are separated at each end plate set, and then a plurality of prefabricated duct piece blocks can be obtained. The pouring ring cavity is formed through the prefabricating die, the end plate sets and the middle steel frameworks are arranged in the pouring ring cavity, retarding soil is poured into the pouring ring cavity, and then a whole ring duct piece is formed; and due to the fact that the whole ring pouring forming mode is adopted, the forming precision can be effectively guaranteed, and the duct piece whole ring structure and the duct piece whole ring prefabricating method are suitable for being applied to full-scale tests.

Description

technical field [0001] The invention relates to a segmental ring structure and a segmental ring prefabrication method. Background technique [0002] At present, for shield excavation of subway tunnels, it is necessary to use segment masonry to support the tunnel wall. Segment rings are usually assembled by segmented prefabricated segments, and the mold corresponding to each segment includes a bottom plate, an upper cover and four side plates. The production process mainly includes: [0003] 1) Clean the mold and remove the residue on the surface of the mold; [0004] 2) Assemble the template and spray the release agent; [0005] 3) Install the steel skeleton in the mold, and install the embedded parts at the same time; [0006] 4) Concrete pouring; [0007] 5) After pouring and initial setting, perform steam curing on the poured segments; [0008] 6) Perform demoulding treatment on the segment, and place the segment after demoulding in the pool for curing until it meet...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a method for the prefabrication of the whole ring of segments to solve the technical problem in the prior art that the way of block prefabrication and then overall assembly is not suitable for application in the full-scale test due to error problems; at the same time, the present invention also provides Provide a segmental integral ring structure that can be processed by the above segmental integral ring prefabrication method

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