00236476

Component

http://onlinepubs.trb.org...s/hrr/1972/413/413-003.pdf

NOTWITHSTANDING CURRENT LIMITATIONS OF ANALYTIC PROCEDURES, THE GREATEST ERROR IN AVAILABLE TECHNIQUES FOR THE ANALYSIS AND DESIGN OF UNDERGROUND CONDUITS PROBABLY LIES IN THE SPECIFICATION OF MATERIAL PROPERTIES, ESPECIALLY THOSE FOR THE SOIL SURROUNDING THE CONDUIT. HOWEVER, THE MECHANICAL PROPERTIES OF THE CONDUIT MATERIAL AND THE CONDITIONS THAT EXIST AT THE SOIL-CONDUIT INTERFACE MAY BE SIGNIFICANT. INCLUDED HEREIN IS A BRIEF DISCUSSION OF THE MATERIAL PARAMETERS THAT FORM A PART OF THE CLASSICAL PROCEDURES FOR THE ANALYSIS AND DESIGN OF PIPE CONDUITS, AND THE ARGUMENTS AGAINST THEIR CONTINUED LONG-TERM USE ARE GIVEN. THE ADVENT OF THE HIGH-SPEED DIGITAL COMPUTER AND THE FINITE-ELEMENT METHOD HAVE PROVIDED THE OPPORTUNITY TO HANDLE MATERIAL PROPERTIES IN A MORE REALISTIC MANNER, AND SOIL-CONDUIT PROBLEMS SHOULD BE FORMULATED TO TAKE THIS FACT INTO ACCOUNT. NONHOMOGENEITY RESULTING FROM DIFFERENT MATERIALS BEING USED FOR THE UNDERLYING SOILS, BEDDING, SIDE FILL, AND BACKFILL OR EMBANKMENT CAN BE READILY INCLUDED IN THE ANALYSIS, AND INCREMENTAL APPROACHES ALLOW NONLINEAR MATERIAL PROPERTIES AND THE ACTUAL CONSTRUCTION SEQUENCE TO BE INCORPORATED IN A PIECEWISE LINEAR MANNER WITHOUT TOO MUCH DIFFICULTY; EVEN THREE-DIMENSIONAL ANALYSES BY NUMERICAL METHODS HAVE RECENTLY COME INTO USE. ACCORDINGLY, APPROPRIATE SOIL PROPERTIES MUST BE SPECIFIED TO GUIDE THE DEVELOPMENT OF INCREASINGLY SOPHISTICATED ANALYSES AND COMPUTER PROGRAMS.

Sponsored by Committee on Subsurface Soil-Structure Interaction. 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.

00043909

pp 13-29

1972

Highway Research Record

51st Annual Meeting of the Highway Research Board

0309020859

Digital/other

Figures (8) ; References (6)

Analysis; Conduits; Design; Information processing; Materials tests; Mechanical properties; Pipe culverts; Properties of materials; Soil structure interaction; Soils; Underground structures

Soil properties

Bridges and other structures; Design; Geotechnology; Highways; Materials

TRIS, TRB

Apr 17 2001 12:00AM

• BALANCED DESIGN AND FINITE-ELEMENT ANALYSIS OF CULVERTS
• BUCKLING OF CYLINDERS IN A CONFINING MEDIUM
• DESIGN OF CIRCULAR SOIL-CULVERT SYSTEMS
• EXPERIMENTAL STUDIES IN SOIL-STRUCTURE INTERACTION
• HISTORICAL DEVELOPMENT OF THE SOIL-STRUCTURE INTERACTION PROBLEM
• STRUCTURAL DESIGN PRACTICE OF PIPE CULVERTS
• SUBSURFACE SOIL-STRUCTURE INTERACTION: A SYNOPSIS
• THE IOWA DEFLECTION FORMULA: AN APPRAISAL WITH DISCUSSION