INFLUENCE OF COMPLEX GEOTECHNICAL CONDITIONS ON THE STRESS- STRAIN FIELD NEAR LARGE-SPAN BRIDGE FOUNDATIONS: STATIC AND DYNAMIC ANALYSIS

Complex geological and geotechnical conditions (faults and discontinuities) at the site for the large-span bridge (over the 100 M deep canyon near the town of Rijeka) have indicated the necessity for a detailed analysis of the stress-strain field near foundation blocks. Extension geological, geophysical and geotechnical investigation, together with microseismology studies have been conducted to obtain parameters for geotechnical analysis. Both 2D and 3D static and dynamic analysis have been performed using the displacement-based finite element method. The soil-structure model is composed from 3D linear soil/rock elements (constant strain) whereas the bridge structure is modelled using 3D beam elements. Dominant faults and discontinuities have been analysed for three extreme states-full bond, free sliding and completely independent movement of neighbouring sides. Dynamic sensitivity analyses indicated significant influence of boundary condition and discontinuity idealisations on fundamental frequency. Superposition of stresses due to selfweight and seismic forces showed predominant influence of discontinuities on the stress-strain field and indicated the need for prestressing anchors. Surveying observations are constantly performed to follow the rock mass improvement and to measure the displacements of control points. The number of the covering abstract of the congress is TRIS no. 385148. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9061912377
• Supplemental Notes:
  • This paper was presented at the Fifth International Congress on Rock Mechanics, Melbourne, Australia, 1983, Volume 2, Theme C.
• Corporate Authors:

  AA Balkema

  P.O. Box 1675
  Rotterdam,   Netherlands  BR-3000

  Australasian Institute of Mining and Metallurgy

  204 Lygon Street
  Carlton, Victoria  Australia  3053
• Authors:
  • Jasarevic, I
  • Bicanic, N
  • Vrkljan, M
  • Saban, B
  • Grubisic, V
  • Andric, M
• Publication Date: 1983

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 245-252
• Serial:
  • Publication of: Balkema (AA)
  • Publisher: AA Balkema

Subject/Index Terms

• TRT Terms: Analysis; Bridge foundations; Bridge superstructures; Bridges; Conferences; Deformation; Deformation curve; Discrete systems; Faults; Finite element method; Foundations; Geophysics; Geotechnical engineering; Mathematical analysis; Mathematical models; Motion; Prestressing; Seismicity; Stresses
• Uncontrolled Terms: Anchors; Bridge spans; Discontinuous; Site investigation
• Geographic Terms: Yugoslavia
• ITRD Terms: 6471: Analysis (math); 3455: Bridge; 8525: Conference; 5595: Deformation; 9015: Discontinuous; 4068: Fault (geomorphol); 6490: Finite element method; 3377: Foundation; 6473: Mathematical model; 5483: Movement; 5731: Seismic; 5722: Site investigation; 5575: Stress (in material); 8128: Yugoslavia
• Subject Areas: Bridges and other structures; Design; Geotechnology; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I43: Rock Mechanics;

Filing Info

• Accession Number: 00385194
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 90 6191 237 7
• Report/Paper Numbers: BOOK
• Files: ITRD, TRIS, ATRI
• Created Date: Jun 28 1984 12:00AM