Application of Small-Diameter bored piles in basement construction of buildings in Quy Nhon city
Keywords:
Small diameter; Basement; Quy Nhon geology; Retaining wall; Construction.Abstract
Quy Nhon city is accelerating its urbanization process, leading to a growing demand for buildings with basements to optimize space utilization. However, basement construction in this area faces numerous challenges due to complex geological conditions, including uneven distribution of weak soil layers, high groundwater levels (1.5–3 meters), limited construction space, and strict requirements to minimize impact on adjacent structures. To address these difficulties, small-diameter bored piles (D ≤ 300 mm) have been proposed as an optimal solution thanks to their flexibility in tight spaces, reduced vibration and noise, and high stability with settlement kept under 5 mm. Practical projects in Quy Nhon have demonstrated the effectiveness of this method, showing a 30% reduction in construction time and 20% cost savings compared to traditional methods such as driven piles or Barrette piles. This study not only analyzes the technical and economic advantages of small-diameter bored piles but also presents specific data from actual construction projects, thereby proposing optimized solutions for similar future developments.
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