T/SDCEAS 10043-2024 Active Group standards

T/SDCEAS 10043-2024 Technical Standard for the Displacement Method of Long Helical Cement-Soil Piles

T/SDCEAS 10043-2024

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 10043-2024

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: This standard is formulated to standardize the design, construction, and inspection and acceptance of long-spiral cement-soil piles by the replacement method, ensuring their safety, applicability, technological advancement, economic rationality, and quality assurance, as well as environmental protection. This standard applies to the design, construction, and inspection and acceptance of long-spiral cement-soil pile composite foundations in buildings, highway subgrades, and other projects. It can also be used as a reference for deep foundation pit support and anti-seepage projects. The design and construction of long-spiral cement-soil piles shall comply with the principles of site-specific adaptation, resource conservation, environmental protection, and green construction. In addition to complying with this standard, the design, construction, inspection, and acceptance of long-spiral cement-soil piles shall also comply with the provisions of current national and local standards. Main technical content: Cement-soil replacement piles are suitable for treating normal consolidated soft-to-plastic clays, silt-rich soils, uncompacted fill soils, slightly dense to medium-dense silt, loose to medium-dense fine sand, coarse sand, saturated loess, and interbedded clay and silt layers in the Yellow River alluvium. For cement-soil replacement pile composite foundations, in addition to conducting detailed geotechnical investigations in accordance with the current national standard GB 50021, the pH value, organic matter content, and pollutants of the soil to be treated shall also be identified. The cement-soil slurry mix ratio shall be determined through laboratory tests. The amount of cement added shall be determined based on the properties of the soil to be treated and the design strength of the cement-soil. The average compressive strength of the 28-day cubic specimens shall be used to determine the strength of the cement-soil. The pre-mixed cement-soil slurry shall