T/TMAC 071-2023 Active Group standards

T/TMAC 071-2023 Tunnel assembly type inverted arch design and construction technical specification

T/TMAC 071-2023 Tunnel assembly type inverted arch design and construction technical specification

Publish Date: 2023-11-01 Implement Date: 2023-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us
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Basic Information

Standard Code: T/TMAC 071-2023
Standard Type: Group standards
Standard Status: Active
is_force_gb: no
CCS Name: Concrete structure engineering
ICS Name: \nTunnel construction
Publish Date: 2023-11-01
Implement Date: 2023-12-01
Pages: 44 pages

Scope

This document specifies the technical requirements for the investigation, design, construction, and acceptance of prefabricated inverted arches in railway tunnels.
This document is applicable to new railway tunnels constructed using the TBM method and the drilling and blasting method.
Note: Prefabricated inverted arches are widely used in railway tunnels and have been proven feasible through engineering practice. Due to the limited radius of railway route selection, there are many long railway tunnels. Generally, the geological conditions of long railway tunnels are better, making it suitable to use prefabricated inverted arch structures. Highway tunnels have a much smaller radius of route selection than railway tunnels. Therefore, there are fewer long highway tunnels than long railway tunnels, and the geological conditions of short highway tunnels are generally worse than those of long tunnels. The longer the prefabricated inverted arch structure is, the smaller the impact on the overall cost of the tunnel. Long railway tunnels have more advantages in using prefabricated inverted arch structures. Therefore, this document is mainly focused on railway tunnels. However, considering that although the cross-section size of railway tunnels and highway tunnels is different under different standards, the structural forms are similar, this document also has reference significance for the use of prefabricated inverted arch structures in highway tunnels.

Development Information

Word Count: 75 Thousand words Pages: 44 pages

Referenced Standards

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