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Title: RIGID PAVEMENT DESIGN FOR PORTS IN CHILE
Accession Number: 00637670
Record Type: Component
Availability: Find a library where document is available Abstract: A case study of rigid pavement design for two ports located in the central zone of Chile, which is an area of high seismic risk, is presented. Special considerations were required to address the problem of liquefiable subgrade soils that were the cause of severe damage to existing pavements during the large earthquake of March 3, 1985. Rational design charts were developed for rigid pavements on the basis of tensile stresses induced by critical edge loads. Slab stresses were evaluated by using two computer codes, and tensile stress-slab thickness relationships were developed for various values of composite modulus of subgrade reaction and for several modes of port pavement loads, including container stacks and loading equipment, such as front lift truck and straddle carrier. Results indicated that container stacking on the slab edge is the critical load and would require substantial strengthening of existing pavements and large investments in new ones. To overcome this problem it was decided to restrict container stacking to a minimum distance of 38 cm (15 in.) from the edge. Consequently, new pavements were designed on the basis of the loads of the container-handling equipment, and existing pavements were strengthened to meet the same criteria. A design chart was developed to assess the risk of liquefaction of loose sandy subgrade soils during future large earthquakes. The chart is based on expected ground motion levels and standard penetration test N-values. Finally, remedial measures were recommended to improve density and the liquefiable deposits in new pavement areas.
Supplemental Notes: This paper appears in Transportation Research Record No. 1388, Rigid and Flexible Pavement Design and Rehabilitation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01403222
Language: English
Authors: Greenstein, JacobPoran, Chaim JPagination: p. 11-18
Publication Date: 1993
Serial: ISBN: 0309054575
Features: Figures
(10)
; References
(15)
TRT Terms:
Bearing capacity; Cargo handling equipment; Coefficient of subgrade reaction; Container handling; Earthquakes; Liquefaction; Pavement design; Pavements; Ports; Rigid pavements; Risk analysis; Sandy soils; Seismicity; Soil densification; Soils; Strength of materials; Structural analysis; Structural strengthening; Subgrade (Pavements); Tension; Thickness
Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Design; Freight Transportation; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces
Files: TRIS, TRB
Created Date: Sep 28 1993 12:00AM
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