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Modeling of bond stress-slip relationships of mono-prestressing strands with H-anchorage dead end

التفاصيل البيبلوغرافية
العنوان: Modeling of bond stress-slip relationships of mono-prestressing strands with H-anchorage dead end
المؤلفون: Jehan H. Aly, A. Farghl Maree, Mohamed Kohail, Ayman H. Khalil
المصدر: Ain Shams Engineering Journal, Vol 14, Iss 6, Pp 102105- (2023)
بيانات النشر: Elsevier, 2023.
سنة النشر: 2023
المجموعة: LCC:Engineering (General). Civil engineering (General)
مصطلحات موضوعية: Bond model, Stress-slip relationship, H-anchorage dead end, Mechanical interlocking resistance, Engineering (General). Civil engineering (General), TA1-2040
الوصف: One of the innovative structural techniques is post-tensioning members with H-anchorage dead end (onion dead end). The H-anchorage dead end is an economic anchorage technique as it enables the use of one anchor device at the live end only where the strand is tensioned and introduces a mechanical resistance against strand movement based on the implemented local bends of the strand wires. This paper presents an experimental and analytical assessment for bond behavior of prestressing strand 0.6 in (15.24 mm) diameter embedded in concrete leading to development of bond stress-slip relationship for post-tensioned mono-prestressing strand. Experimental work was conducted using nine cylindrical specimens with 150 mm diameter at Concrete Research Center -Ain Shams University, Cairo. Different specimen lengths were tested including 350, 550, 750 mm to differentiate the major affecting parameters for the bond stress-slip relationship. Based on the experimental results, an empirical bond model was developed to simulate bond stress-slip relationship between concrete and mono-prestressing strand with H-anchorage dead end. The developed bond model comprises four portions: an ascending curvilinear portion, a constant plateau, a linear ascending portion representing the H-anchorage resistance, and a linear descending portion at post-peak failure stage. Based on the experimental results, the minimum embedment length of the strand in concrete was determined, which shall guarantee that the strand reaches ultimate capacity without bond failure.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2090-4479
Relation: http://www.sciencedirect.com/science/article/pii/S2090447922004166; https://doaj.org/toc/2090-4479
DOI: 10.1016/j.asej.2022.102105
URL الوصول: https://doaj.org/article/730200c4f56f414b9777f10aa2d72253
رقم الانضمام: edsdoj.730200c4f56f414b9777f10aa2d72253
قاعدة البيانات: Directory of Open Access Journals
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