SEISMIC IMAGING AS A MEANS TO EVALUATE FOUNDATION STRUCTURES. IN: CURRENT PRACTICES AND FUTURE TRENDS IN DEEP FOUNDATIONS

Cross-hole sonic logging (CSL) has become an important nondestructive testing (NDT) method used in evaluating the integrity of foundation structures to maintain quality assurance and quality control (QA/QC) of transportation facilities and infrastructures. Tomography, based on three-dimensional cross-hole sonic logging data processing technology, offers an improvement over the techniques currently used to characterize the interior structure of drilled shafts. The underlying concept for seismic tomography is based on the principle that acoustic waves propagate at different velocities through different types of material or the same material with different physical properties. Three-dimensional velocity tomographic images provide greater detail of the interior structure, making defects easier to classify with respect to size and location within the foundation structure. By classifying these defects, an engineer has the information necessary to better assess whether these structures meet the applicable design requirements, allowing them to repair or replace inadequate foundation structures. The end result is that the foundation structures will be more likely to meet the safety and service life requirements for their project. Applications of seismic tomography will be presented, illustrating how seismic imaging can provide a reasonable estimate regarding the integrity of foundation structures.

• Record URL:
  https://doi.org/10.1061/40743(142)20
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0784407436
• Corporate Authors:

  American Society of Civil Engineers

  Geo-Institute
  Reston, VA  United States  20191-4400
• Authors:
  • Kase, E
  • Ross, T
• Conference:
  • Contributions in Honor of George G. Gobel
  • Location: Los Angeles California, United States
  • Date: 2004-7-27 to 2004-7-31
• Publication Date: 2004-7

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 361-369
• Monograph Title: CURRENT PRACTICES AND FUTURE TRENDS IN DEEP FOUNDATIONS
• Serial:
  • ASCE Geotechnical Special Publication
  • Issue Number: 125
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Evaluation and assessment; Foundations; Infrastructure; Nondestructive tests; Physical properties; Quality assurance; Quality control; Seismic prospecting; Shafts (Machinery); Structures; Transportation facility operations; Velocity
• Subject Areas: Bridges and other structures; Design; Highways; Pavements; I25: Design of Tunnels;

Filing Info

• Accession Number: 00987898
• Record Type: Publication
• ISBN: 9780784407431
• Files: TRIS
• Created Date: Mar 10 2005 12:00AM