SEISMIC EARTH PRESSURE ON ABUTMENT WITH LIGHTWEIGHT GEO-MATERIALS FOR BACK-FILL

As one of methods to reduce earth pressure on abutment and prevent lateral flow, lightweight geo-material is used for back-filling. In this study, dynamic centrifuge model test was conducted to investigate seismic earth pressure on abutment when lightweight geo-materials containing air-bubble beads is used for back-filling. In addition, the effects of the area of lightweight geo-material were studied through numerical analysis to find the optimum extent to use lightweight geo-materials. In the dynamic centrifuge model test, different levels of input acceleration were considered to study the variation of seismic earth pressure on abutment. It was found that both the dynamic earth pressure on abutment and the displacement of abutment were reduced when lightweight geo-materials were used for back-filling. Through the dynamic numerical analysis, the distribution of dynamic earth pressure was investigated in detail, and it was confirmed that the dynamic earth pressure was reduced. In addition, the variation of dynamic earth pressure due to the change of area and three defferent properties of lightweight geo-materials was clarified through parametric analysis, and the effects of dynamic earth pressure on abutment was revealed.

• Corporate Authors:

  THE JAPANESE GEOTECHNICAL SOCIETY

  SUGAYAMA BLDG., 2-23,KANDA AWAJI-CHO
  CHIYODA-KU, TOKYO  Japan  101-0063
• Authors:
  • OHBO, N
  • HORIKOSHI, K
  • MASUMURA, K
  • INAGAKI, M
• Conference:
  • PROCEEDINGS OF THE INTERNATIONAL WORKSHOP IN LIGHTWEIGHT GEO-MATERIALS
• Publication Date: 2002-3

Language

• English

Media Info

• Features: References;
• Pagination: p. 181-186

Subject/Index Terms

• TRT Terms: Earth pressure; Embankments; Lightweight materials; Mathematical analysis; Properties of materials; Seismicity; Soils; Textbooks
• Uncontrolled Terms: Passive earth pressure
• ITRD Terms: 6471: Analysis (math); 5727: Earth pressure (passive); 2801: Embankment; 9038: Lightweight; 5925: Properties; 5731: Seismic; 4156: Soil; 8526: Textbook
• Subject Areas: Geotechnology; Materials;

Filing Info

• Accession Number: 00938852
• Record Type: Publication
• Source Agency: Public Works Research Institute
• Files: ITRD
• Created Date: Mar 7 2003 12:00AM