Preliminary Numerical Analysis of a Novel Retaining System in Dry Sandy Soil and Its First Application to a Deep Excavation in Wuhan (China)

摘要: A new form of retaining system for use in deep excavations crowded cities is proposed this paper. The system, which we have coined the herringbone (HRS) involves vertical and batter piles, capping beams, wales. numerical study was conducted (using finite difference tool FLAC3D) to investigate various aspects behavior reveal mechanisms responsible it. HRS method compared subsequently two other commonly-used systems: cantilever structure (CRS) horizontal-strutted (HSRS). results show that using significantly reduces deformation piles bending moments acting on them. More specifically, maximum values moment were calculated be 4.5% 23.1% corresponding CRS values, respectively (the figures HSRS are 5.3% 19.7%, respectively), so methods provide similar levels support. Finally, a real-world application presented valuable reference future HRS.