Polymethyl methacrylate mold for manufacturing complex-section tunnel lining model

Abstract

The invention discloses a polymethyl methacrylate mold for manufacturing a complex-section tunnel lining model. The polymethyl methacrylate mold comprises a polymethyl methacrylate base, a polymethylmethacrylate outer mold and one or a plurality of polymethyl methacrylate inner molds. The polymethyl methacrylate outer mold is a closed type cylindrical body composed of a plurality of curved wall type columnar outer mold plates with outside handles, and a joint seam is reserved between every two adjacent outer mold plates. Each polymethyl methacrylate inner mold is a closed type cylindrical body composed of a plurality of curved wall type columnar inner mold plates with inside handles, and a joint seam is reserved between every two adjacent inner mold plates. Clips are arranged at the top joint seams of the polymethyl methacrylate outer mold and the polymethyl methacrylate inner molds. The polymethyl methacrylate base is provided with an outer mold slot and one or a plurality of inner mold slots. The bottom of the polymethyl methacrylate outer mold is completely inserted into the outer mold slot, and the bottoms of the polymethyl methacrylate inner molds are all inserted into the inner mold slots. The polymethyl methacrylate inner molds are located on the inner side of the polymethyl methacrylate outer mold, and a tunnel lining model pouring groove is reserved between the polymethyl methacrylate inner molds and the polymethyl methacrylate outer mold.

Description

technical field [0001] The invention relates to a plexiglass mold for making tunnel lining models with complex sections, especially for making single-hole tunnels, multi-arch tunnels and other tunnel lining models with complex sections. Background technique [0002] The theory of design and construction of tunnels with complex sections such as asymmetric multi-arch tunnels is very complicated. Model tests provide the most intuitive method to solve such problems, especially to study the stress characteristics and failure modes of tunnel lining structures with complex sections. In the relevant tunnel model tests, it is particularly difficult to make the tunnel lining to ensure the integrity of the tunnel structure and its consistency with the prototype. However, the existing wooden board molds are easy to deform when exposed to water, are not easy to be reused, and the models produced are rough; the integral steel molds are expensive, heavy, complex to remove and have a low s...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome that the existing wooden board molds are not easy to be reused and accurately formed, the integral steel mold has high cost, heavy weight and low demolition success rate, and the section of the model made by the hot-rolled organic glass mold is not uniform. Assembled plexiglass molds for cross-section tunnel lining models. This mold can not only accurately make single-hole tunnels, multi-arch tunnels and other complex-section tunnel lining models of different sizes, but is especially suitable for making complex tunnel lining models with large scales. The cost is low, the processing is easy, the form removal is convenient, the mold forming rate is high, and the integrity of the tunnel lining model after pouring is good

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