Effectiveness of Buttress and Cross-Wall in Deep Excavations

Buttress and cross-wall have been widely adopted with success in soft ground excavation work. The interaction between the soil, buttress/cross-wall and diaphragm wall is a three dimensional (3D) problem but in practice the problem is commonly simplified into a two-dimensional problem. This study compared the contribution of buttress and cross-wall on the displacement of diaphragm wall via a series of 3D finite element (FE) analysis. The numerical procedure was first calibrated against the field data obtained from a 16 m deep excavation project in Taipei City. The model was then used in the subsequent parametric study to evaluate the efficiency of buttress and cross-wall for a diaphragm wall supported excavation. Result showed that cross-wall and buttress were equally efficient in restraining the lateral displacement of diaphragm wall.


  • English

Media Info

  • Media Type: Digital/other
  • Features: References; Tables;
  • Pagination: pp 267-275
  • Monograph Title: Geo-China 2016: Emerging Technologies in Tunnel Engineering, Modeling, Design, Construction, Repair, and Rehabilitation

Subject/Index Terms

Filing Info

  • Accession Number: 01608900
  • Record Type: Publication
  • ISBN: 9780784480038
  • Files: TRIS, ASCE
  • Created Date: Jul 21 2016 3:05PM