LOADS ON NEGATIVE-PROJECTING CONDUITS
LOADS ON NEGATIVE PROJECTING CONDUITS WERE STUDIED TO USE THE MEASURED VALUES OF SETTLEMENTS FOR USE IN SPANGLER'S LOAD THEORY. THIS STUDY IS DESIGNED TO: (1) DETERMINE THE LOADS ON THREE NEGATIVE PROJECTING CONDUITS, AND TO OBSERVE THE ACTIONS AND FACTORS WHICH AFFECT THESE LOADS, AND (2) UTILIZE THE DATA IN THE DETERMINATION OF A RELIABLE METHOD AND OF SAFE VALUES OF CERTAIN CONSTANTS FOR CALCULATING THE PROBABLE MAXIMUM LOADS ON NEGATIVE-PROJECTING CONDUITS. LOAD AND SETTLEMENT DATA ARE PRESENTED SHOWING THE USUAL SEASONAL VARIATIONS. THESE LOAD AND SETTLEMENT DATA ILLUSTRATE THE VARIATIONS WHICH SHOULD BE EXPECTED FOR SIMILAR CONDUITS WITH SUPPOSEDLY SIMILAR LOADING CONDITIONS UNDER FILLS OF SIMILAR MATERIALS. THE LOAD RECORDS ARE SUMMARIZED FOR THESE THREE NEGATIVE-PROJECTING CONDUITS, AND THE COMPARISONS SHOWN BETWEEN THE MAXIMUM WEIGHED LOADS AND THOSE CALCULATED WITH THE SPANGLER FORMULA. THE COMPARISON OF CALCULATED LOADS AND THESE MEASURED LOADS DEMONSTRATE THE EFFECTIVENESS OF NEGATIVE-PROJECTION LOADING AS A MEANS OF DECREASING THE LOAD ON CULVERTS TO BE INSTALLED UNDER HIGH FILLS. THE CLOSE CORRELATION BETWEEN CALCULATED AND WEIGHED LOADS PROVIDES ADDITIONAL CONFIRMATION OF THE MARSTON FILL-LOAD THEORY.
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Supplemental Notes:
- Vol 31, pp 308-319, 8 FIG, 2 TAB. 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.
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Authors:
- Schlick, W J
- Publication Date: 1952
Media Info
- Media Type: Digital/other
- Monograph Title: Proceedings of the Thirty-First Annual Meeting of the Highway Research Board, Washington, D.C., January 15-18, 1952
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Serial:
- Highway Research Board Proceedings
- Volume: 31
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Alternatives analysis; Calculation; Conduits; Culverts; Fills; Ground settlement; Loads; Weight measurement
- Uncontrolled Terms: Computation
- Old TRIS Terms: Negative pressures; Projection
- Subject Areas: Bridges and other structures; Highways; Hydraulics and Hydrology;
Filing Info
- Accession Number: 00204141
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Oct 14 1994 12:00AM