Laminar Box System for 1-g Physical Modeling of Liquefaction and Lateral Spreading

Details of a large scale modular 1-g laminar box system capable of simulating seismic induced liquefaction and lateral spreading response of level or gently sloping loose deposits of up to 6 m depth are presented. The internal dimensions of the largest module are 5 m in length and 2.75 m in width. The system includes a 2-D laminar box made of 24 laminates stacked on top of each other supported by ball bearings, a base shaker resting on a strong floor, 2 computer controlled high speed actuators mounted on a strong wall, a dense array advanced instrumentation, and a novel system for laboratory hydraulic placement of loose sand deposit, which mimics underwater deposition in a narrow density range. The stacks of laminates slide on each other using a low-friction high-load capacity ball bearing system placed between each laminate. It could also be reconfigured into 2 smaller modules 2.5 m wide, 2.75 m long, and up to 3 m high. The maximum shear strain achievable in this system is 15%. A limited set of instrumentation data is presented to highlight the capabilities of this equipment system. The reliability of the dense array sensor data is illustrated using cross comparison of accelerations and displacements measured by different types of sensors.

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  • Authors:
    • Thevanayagam, S
    • Kanagalingam, T
    • Reinhorn, A M
    • Tharmendhira, R
    • Dobry, Ricardo
    • Pitman, M
    • Abdoun, Tarek
    • Elgamal, Ahmed
    • Zeghal, Mourad
    • Ecemis, N
    • El Shamy, U
  • Publication Date: 2009-9

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01140949
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 29 2009 3:29PM