کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4927854 | 1431995 | 2017 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimal prestressing of triple-bay prestressed stayed columns
ترجمه فارسی عنوان
پیش پا افتاده مطلوب ستون های ماندگار سهبعدی پیش پایدار
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کلمات کلیدی
مدل سازی عنصر محدود ثبات، پس از خم شدن، پیش پا افتاده، لرزش تعاملی، بهینه سازی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
A nonlinear finite element model of a triple-bay prestressed stayed column is developed within the commercial package ABAQUS. A linearly obtained 'optimal prestressing force' that maximizes the critical buckling load is investigated since this quantity has been demonstrated in previous work on single-bay prestressed columns to provide a lower bound to the actual maximum load carrying capacity when compared to experimental results and nonlinear modelling. The ratio of the crossarm to the overall column length, the diameter of the cable stays, the relative lengths of the individual crossarms and the ratio of the initial prestressing force to the aforementioned linear optimal prestress are varied. Measures for the relative efficiency of the main column and the stays are defined and the objective of the optimization study is for the efficiency to be maximized. It is found that the true optimal prestress is generally higher than the equivalent, linearly obtained, quantity but by a significantly reduced factor when compared to an equivalent study for single-bay prestressed stayed columns.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Structures - Volume 12, November 2017, Pages 132-144
Journal: Structures - Volume 12, November 2017, Pages 132-144
نویسندگان
Jialiang Yu, M. Ahmer Wadee,