T/SDCEAS 10027-2023 Active Group standards

T/SDCEAS 10027-2023 Deep vacuum drainage and strong compaction technology standard

Publish Date: 2023-05-18 Implement Date: 2023-06-01 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 10027-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

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

Publish Date: 2023-05-18

Implement Date: 2023-06-01

Scope

Scope: This standard is formulated to standardize the design, construction, inspection, and acceptance of shallow-layer vacuum drainage and dynamic compaction in order to ensure safety, advanced technology, economic rationality, quality assurance, resource conservation, and environmental protection. This standard applies to the design, construction, inspection, and acceptance of shallow-layer vacuum drainage and dynamic compaction for soft subgrade in buildings, municipal roads, and docks. In addition to complying with this standard, shallow-layer vacuum drainage and dynamic compaction shall also comply with the relevant provisions of current national, industry, and local standards. Main technical content: Shallow-layer vacuum drainage and dynamic compaction can be divided into horizontal and vertical drainage methods. It is suitable for treating silt, fine sand, dredged soil, and alluvial strata with clay interlayers with a high groundwater level. The effective reinforcement depth should not exceed 6m. When the shallow layer is silt, fine sand, or dredged soil, and the drainage depth is 2m to 2.5m, the horizontal buried pipe dynamic compaction method should be adopted; when the drainage depth is greater than 2.5m, the vertical buried pipe dynamic compaction method should be adopted. The energy-enhanced dynamic compaction method should be used in conjunction with shallow-layer vacuum drainage, or used independently. Before construction, trial compaction or experimental construction should be carried out. The number of trial compaction areas should be determined according to the complexity of the construction site, the scale of the building, and the type of the building. The trial compaction areas should be representative, and their area should not be less than 400m2. During the construction of shallow-layer vacuum drainage and dynamic compaction, drainage and dynamic compaction should be carried out simultaneously. When the construction vibration has a negative i