T/GDCTA 001-2025 Active Group standards

T/GDCTA 001-2025 Road bridge enhanced modular expansion device technical specifications

Publish Date: 2025-01-14 Implement Date: 2025-03-01 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/GDCTA 001-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Civil Engineering Comprehensive

Publish Date: 2025-01-14

Implement Date: 2025-03-01

Scope

Main technical content: The reinforced modular expansion device proposed in this specification welds the anchoring steel plate with the side beam and tail fin through a dovetail structure, and the welding length is increased from 50-60 mm in the traditional structure to 160-200 mm, effectively improving the overall anchoring performance of the expansion device and solving traditional problems such as the failure of the expansion device due to insufficient anchoring capacity and the damage of the concrete in the anchoring area. The improvement of the overall anchoring performance of the expansion device also reduces the impact on the beam body when vehicles pass through the joint. At the same time, by using measures such as rubber sealing strips containing sound-absorbing materials, the noise generated when vehicles pass through the joint can also be reduced. This specification is a technical specification for reinforced modular expansion devices for highway bridges, which mainly involves the form and construction requirements, performance and technical requirements, design, construction, inspection, and maintenance work requirements of reinforced modular expansion devices for highway bridges.