کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
774233 1462999 2012 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Failure analysis of tendon breakout on bottom slab of a pre-stressed concrete box gird bridge during construction
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Failure analysis of tendon breakout on bottom slab of a pre-stressed concrete box gird bridge during construction
چکیده انگلیسی

There were several tendons breakout on bottom slabs happening during construction stage of continuous pre-stressed concrete bridges in recent years in China. The paper studies one case based on numerical simulation that happened on a 47 + 75 + 47 m continuous pre-stressed concrete rigidframe bridge. In this paper, both linear elastic and nonlinear inelastic analysis are developed, concrete and reinforcements stress levels before and after pre-stressed tendons stressed are compared, and the path of crack appearance are revealed by calculation. The effects of the incorrect arrangement of reinforcement during construction are also analyzed, which is proved not to be the leading reason of the failure. The outcomes of the finite element analysis indicate that oversize of the longitudinal prestressed tendons and unreasonable sizes of the bottom slab are the main reasons of the failure. Some advices to avoid similar accident are given for future design.


► A tendon breakout failure of PC box girder bridge during construction is studied.
► Linear elastic and nonlinear inelastic FEM analysis results are compared.
► The effects of incorrect arrangement of reinforcement are analyzed.
► Failure reasons are unreasonable design of pre-stressed tendons and bottom slab.
► Some advices to avoid similar accident are given for future design.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 25, October 2012, Pages 291–303
نویسندگان
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