杭基礎 (1)

[III-05] Lateral altemate loading test of high standard micro-piles method constructed by double tube excavation

*粕谷 悠紀¹、高橋 真一¹ (1. 株式会社　大林組)

Keywords:High standard micro-piles, Lateral altemate loading test, Ground displacement, Lateral ground reaction modulus

The “high-standard micro-piles method” which is also possible at a narrow space, low altitude head condition and low cost has been developed as a new construction method for reinforcing existing foundation structures. Micro-piles are constructed with double tube excavation using by boring machine. This paper describes the results of lateral altemate loading test of constructed pile using diameter of 267.4 mm. It was confirmed that the lateral ground reaction modulus in ground lateral displacement at 15 mm exceeds that coefficient calculated from elastic modulus of investigation results.