T/SDCEAS 10019-2022 Active Group standards

T/SDCEAS 10019-2022 Combination hammer method for deep pile driving technology standards in the borehole

Publish Date: 2022-12-16 Implement Date: 2023-01-01 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 10019-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Groundwork and foundation engineering

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

Publish Date: 2022-12-16

Implement Date: 2023-01-01

Scope

Scope: This standard applies to the design, construction, and inspection of deep compaction foundations using the combined hammer method in industrial and civil buildings, municipal projects, and other engineering applications. Main technical content: The combined hammer method for deep compaction within holes can be divided into two types: percussive hole forming and drilling. Percussive hole forming is suitable for treating foundations such as deep fill soil, general clay soils, and collapsible loess. When replacing with coarse-grained materials, it can also be used for saturated soft clay foundations. When the hole-forming depth is large, the efficiency of percussive hole forming is low, and there is no influence of groundwater, it is appropriate to use the drilling method. Before construction, a 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 building. The trial compaction areas should be representative, and their area should not be less than 400m2. When the construction vibration and lateral soil compaction have adverse effects on nearby buildings, precision instruments and equipment, and the construction structures, the impact on the surrounding environment should be evaluated, and the safety distance for construction and vibration reduction measures should be specified. When using coarse-grained materials for compaction replacement, the bearing capacity of the composite foundation can be evaluated according to the replacement rate of the area of shallow piles. When using soil as the material for hole compaction, the bearing capacity of the foundation should be evaluated according to the general dynamic compaction foundation. For deep fill soil foundations, deep backfilling of soil materials, shallow backfilling of coarse-grained materials, or different intensity design for the bearing