HIGH-MODULUS COLUMNS FOR LIQUEFACTION MITIGATION

This paper presents the performance of a shopping complex in Turkey where the soils were improved with jet-grout columns and preload fills and subjected to the 1999 Kocaeli Earthquake (M = 7.4). Under construction during the earthquake, the Carrefour Shopping Center covers an area of 55,000 sq. m and is founded on shallow footings, mats, and slabs-on-grade that rest on soft, saturated alluvial sediments made up of clays, silts, and sands. High-modulus columns constructed by jet grouting were installed at close-to-moderate spacings to reduce anticipated static settlements in the clays and mitigate liquefaction in the sands. The site was subjected to peak acceleration of approximately 0.2g during the earthquake. Grouting had been completed for about 67% of the site when the earthquake struck. Following the event, a field reconnaissance found stark contrast between the performance of the improved and unimproved sections. The jet-grout-treated areas suffered no apparent damage, whereas the unimproved sections of the complex, along with nearby untreated building sites, commonly suffered liquefaction-related settlements of up to 10 cm. This is the only case history known to the authors that documents the field performance of high-modulus columns used in this manner for liquefaction mitigation and direct instrumented measurement of liquefaction-induced settlements.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Martin II, J R
  • Olgun, C G
  • Mitchell, J K
  • Durgunoglu, H T
• Publication Date: 2004-6

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 561-571
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 130
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Earthquake resistant design; Earthquake resistant structures; Fills; Foundation engineering; Geotechnical engineering; Grouting; Liquefaction; Settlement (Structures); Soft soils; Soil structure interaction
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00975237
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 13 2004 12:00AM