Abstract
A new pile, vibro compaction gravel-concrete composite pile (referred to as GCP) is developed. The principle, construction method, quality assurance (QA) and quality control (QC) of gravel-concrete composite pile are briefly introduced. Simple calculation models of gravel-concrete composite pile embedded in soft soils are built by FLAC3D and LPILE software, and models of conventional concrete pile and gravel pile with the same volumes are also built for comparative analysis. The performances on vertical compressive load, uplift load, and lateral load capacities are comparatively analyzed and discussed. Then the parameter study on the proportion of gravel materials in the whole gravel-concrete composite pile is carried out. The results show that the gravel-concrete composite pile is a cost-effective pile, which can improve bearing capacity effectively.
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