A prefabricated tunnel model structure and its manufacturing method

Abstract

The invention discloses an assembly type tunnel model structure and a manufacturing method thereof, and belongs to the field of model tests for earthquake-resistance of underground structures and geotechnical earthquake engineering. The assembly type tunnel model structure at least comprises model bolts, separation layers, multiple prefabricated model segments and a prefabricated model steel bar.The manufacturing method of the assembly type tunnel model structure includes the steps of arranging external supports; pre-embedding bolt model wires and prefabricating a bottom segment; arranging gaskets at both ends of the bottom segment; arranging an internal support and hand hole supports; post-pouring the segments; arranging gaskets on the post-poured segments; post-pouring the segments again; then placing gaskets on the post-poured segments again; and post-pouring the last segment to complete the manufacturing. The assembly type tunnel model structure and the manufacturing method thereof in the invention can be used in the scaled model test of assembly type tunnels, the model can reflect the main structural features such as connecting interfaces, bolts and connecting hand holes at connecting joints among prototype segments, and the assembly type tunnel model structure and the manufacturing method thereof have the advantages of simple and easy manufacturing and economical efficiency and the like, and have broad application prospects.

Description

technical field [0001] The invention relates to the field of seismic engineering model tests of underground structures and geotechnical earthquakes, in particular to an assembled tunnel structure and a manufacturing method thereof. Background technique: [0002] The prefabricated building structure has many advantages such as fast construction speed, green environmental protection, low labor demand, and good economy. It is especially suitable for housing and infrastructure construction in urban areas. In recent years, the construction method of prefabricated building structures has been introduced to the construction of underground structures, such as Yuanjiadian Station of Changchun Metro Line 2, and prefabricated tunnels and prefabricated interval tunnels will also be built in Beijing. [0003] From the earthquake damage of the Hanshin earthquake in Japan in 1995, it can be seen that the underground structure in the high-intensity area will be threatened by the earthquake ...

AI Technical Summary

Problems solved by technology

However, due to the limited size or bearing capacity of the current test equipment, especially the underground structure model test often needs to place the model structure in the model soil, the scale ratio of the model test is generally large, and the geometric dimensions of the model structure or components are generally Smaller (often on the order of millimeters)

The geometric size of part of the prefabricated model structure is small, which makes it difficult for some detailed structures to be scaled normally according to the geometric similarity relationship. Therefore, a model structure that can reflect the characteristics of the prefabricated tunnel structure and is simple and feasible is required. its production method

Images