T/SDCEAS 10044-2024 Active Group standards

T/SDCEAS 10044-2024 Non-excavation long-slot screw pile technology standards

Publish Date: 2024-06-14 Implement Date: 2024-07-01 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/SDCEAS 10044-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Earthwork, excavation, foundation construction, and underground engineering

Publish Date: 2024-06-14

Implement Date: 2024-07-01

Scope

Scope: To standardize the application of non-expansive long-spiral threaded grouted piles in design, construction, inspection, and acceptance, ensuring their safety, advanced technology, economic rationality, reliable quality, and environmental friendliness, this standard is formulated. This standard applies to the design, construction, inspection, and acceptance of non-expansive long-spiral threaded grouted piles in building and municipal engineering projects. For seismic-resistant pile foundations, the seismic bearing capacity should be verified. Non-expansive long-spiral threaded grouted piles should comprehensively analyze factors such as engineering geology and hydrogeology, the type of superstructure, functional requirements, load characteristics, construction conditions, environmental and regional experience, and select corresponding design and construction parameters. During construction, quality control and management should be strengthened. In addition to complying with this standard, the design, construction, inspection, and acceptance of non-expansive long-spiral threaded grouted piles shall also comply with the provisions of current national and local standards. Main technical content: - For construction of threaded piles, the power head and winch of the drilling rig should be equipped with a frequency converter to achieve speed control. Special drill bits with cutting tools for threading should be used. - When using the post-inserted reinforcing cage method to form piles, they can be used for pile foundations; when using the plain concrete method to form piles, they can be used for composite foundations. - The diameter of the designed piles should be 400mm~800mm, and the pile length should not exceed 30m. - Threaded piles are suitable for general clay, silt, sand, and residual soil layers. For other complex soil layers, their applicability should be determined through trial piles. - When the foundation is mainly soft, plastic, or cohe