T/GDSCEA 001-2023 Active Group standards

T/GDSCEA 001-2023 Technical Specifications for Cold Extrusion Sleeve Connection of Reinforcing Steel Bars in Prefabricated Concrete Structures

T/GDSCEA 001-2023

Publish Date: 2023-01-06 Implement Date: 2023-03-01 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/GDSCEA 001-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Building materials

ICS Name: Integrated Building Components

Publish Date: 2023-01-06

Implement Date: 2023-03-01

Scope

Main technical content: 1. Cold-extrusion sleeve connection node system for new precast concrete components The cold-extrusion sleeve connection node in this technology primarily refers to the sleeve connection + steel pipe positioning system for column-beam joints. This system replaces the commonly used grouting sleeve connection in China with cold-extrusion sleeve connection, eliminating issues such as the lack of effective detection methods for grouting material compactness and unclear durability performance of grouting material. 2. Precise control technology for precast concrete component production and supply Precast concrete components undergo three-level inspections including factory self-inspection, supervision-approved factory acceptance, and project-site acceptance to ensure that each component is qualified before installation. Each component is assigned a unique QR code during factory production. Through the company's smart construction site management system, all precast components are tracked from production and factory acceptance to transportation to the construction site and installation, achieving precise supply and "zero inventory" goals for components. 3. Rapid and precise positioning installation technology for precast concrete columns The upper and lower columns of the joint, as well as the lower half of the beam, are all precast, while the upper part of the beam and the joint area use cast-in-place concrete. The upper column is equipped with pre-embedded steel pipes, and the lower column has reserved holes. During installation, the pre-embedded steel pipes of the upper column are directly inserted into the reserved holes of the lower column, achieving rapid and precise positioning connection of precast columns. 4. Integrated construction technology for cold-extrusion sleeve connection of beam-column joints Based on experimental research and engineering practice, this project summarizes and forms a complete construction process