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A platform for research: civil engineering, architecture and urbanism
Shaft-grouted bored pile – a practical engineering approach to the bearing capacity
The paper investigates various static load test results on both shaft-grouted and non-shaft-grouted (plain) bored piles at eight project sites in Vietnam. A practical engineering model for shaft-grouted bored piles is proposed to determine the side friction of the shaft-grouted bored piles (drilled shafts), with consideration of shaft friction distribution on instrumented bored piles. The improved ratio of bored pile skin resistance after shaft grouting, compared to non-shaft grouting, ranges from 1.058 to 1.323. The application of shaft grouting is beneficial for the soils of gravel, sand, clayey sand, and silty sand, which have the permeability ranging from 1.00 × 10–5 to 8.60 × 10–5 m/s, while it is not sufficient for clayey soils. Moreover, the possibly mobilised side friction for these shaft-grouted bore piles can be up to 250 kPa. The results derived from the proposed model agree well with the static load test data of the shaft-grouted piles in term of side friction, bearing capacity, and load transfer mechanism.
Shaft-grouted bored pile – a practical engineering approach to the bearing capacity
The paper investigates various static load test results on both shaft-grouted and non-shaft-grouted (plain) bored piles at eight project sites in Vietnam. A practical engineering model for shaft-grouted bored piles is proposed to determine the side friction of the shaft-grouted bored piles (drilled shafts), with consideration of shaft friction distribution on instrumented bored piles. The improved ratio of bored pile skin resistance after shaft grouting, compared to non-shaft grouting, ranges from 1.058 to 1.323. The application of shaft grouting is beneficial for the soils of gravel, sand, clayey sand, and silty sand, which have the permeability ranging from 1.00 × 10–5 to 8.60 × 10–5 m/s, while it is not sufficient for clayey soils. Moreover, the possibly mobilised side friction for these shaft-grouted bore piles can be up to 250 kPa. The results derived from the proposed model agree well with the static load test data of the shaft-grouted piles in term of side friction, bearing capacity, and load transfer mechanism.
Shaft-grouted bored pile – a practical engineering approach to the bearing capacity
Nguyen, Cong-Oanh (author) / Nguyen, Ngoc-Trung (author)
2025-03-16
16 pages
Article (Journal)
Electronic Resource
English
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