Evaluation of AASHTO Live Load and Line Load Distribution Factors for I-Girder Bridge DecksSource: Practice Periodical on Structural Design and Construction:;2004:;Volume ( 009 ):;issue: 004Author:Peter Kocsis
DOI: 10.1061/(ASCE)1084-0680(2004)9:4(211)Publisher: American Society of Civil Engineers
Abstract: This paper evaluates the American Association of State Highway and Transportation Officials (AASHTO) line load and live load distribution factors. The standard AASHTO formulas for live load in some cases underestimate the live load moments by as much as 40%. The AASHTO distribution of line loads (dividing the loads equally among all girders) results in even larger underestimates of line load distribution, leading to unsafe designs. This paper shows how more reliable distribution factors can be obtained for line loads, AASHTO truck loads, and non-AASHTO live loads. A user-friendly computer program for calculating distribution factors is discussed. A useful concept for analyzing beams of variable section (equivalent girder) is also discussed.
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| contributor author | Peter Kocsis | |
| date accessioned | 2017-05-08T21:22:46Z | |
| date available | 2017-05-08T21:22:46Z | |
| date copyright | November 2004 | |
| date issued | 2004 | |
| identifier other | %28asce%291084-0680%282004%299%3A4%28211%29.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/49152 | |
| description abstract | This paper evaluates the American Association of State Highway and Transportation Officials (AASHTO) line load and live load distribution factors. The standard AASHTO formulas for live load in some cases underestimate the live load moments by as much as 40%. The AASHTO distribution of line loads (dividing the loads equally among all girders) results in even larger underestimates of line load distribution, leading to unsafe designs. This paper shows how more reliable distribution factors can be obtained for line loads, AASHTO truck loads, and non-AASHTO live loads. A user-friendly computer program for calculating distribution factors is discussed. A useful concept for analyzing beams of variable section (equivalent girder) is also discussed. | |
| publisher | American Society of Civil Engineers | |
| title | Evaluation of AASHTO Live Load and Line Load Distribution Factors for I-Girder Bridge Decks | |
| type | Journal Paper | |
| journal volume | 9 | |
| journal issue | 4 | |
| journal title | Practice Periodical on Structural Design and Construction | |
| identifier doi | 10.1061/(ASCE)1084-0680(2004)9:4(211) | |
| tree | Practice Periodical on Structural Design and Construction:;2004:;Volume ( 009 ):;issue: 004 | |
| contenttype | Fulltext |