عنوان المقالة: PERFORMANCE OF HIGH STRENGTH REINFORCED CONCRETE CONTINUOUS BEAMS UNDER PURE TORSION
زينة وليد عباس | zinah waleed Abass | 11975
نوع النشر
مجلة علمية
المؤلفون بالعربي
المؤلفون بالإنجليزي
Majid M. Kharnoob, Ali A. Abdulhameed, Zinah W. Abbas
الملخص الانجليزي
Torsion rarely occurs by itself only. It is usually combined with other actions such as flexure and shear. Even-though, the performance of high strength reinforced concrete continuous beams under pure torsion is investigated in this study. Torsional moments were acted at the external supports via applying external loads far away from the vertical plane of bending at various eccentricities from the axis of the RC beams until failure. Variables considered in this study are absolute vertical displacement of the external supports, torsional moment’s capacity, and angle of twist and initial cracking stages of loading. Four increments of 10 cm in each of loading eccentricity started from 30 cm arm of loading were investigated. According to experimental results; when applied load eccentricity increased from 30cm to 60cm, the absolute vertical displacement increased about 56.315% and the angle of twist increased about 55.44% at failure while the generated twisting moments increased about 25.58% . It has been also found that the ultimate failure loading capacity of beams decreased about 37.21% when the load eccentricity increased from 30cm to 60cm. Furthermore, the initial cracking was monitored; it was found that cracking occurs at higher stages of loading with low loading eccentricity. The initial cracking records appeared at 79.07%, 77.78%, 74.3% and 66.67% of loading when loads arm were 30, 40, 50 and 60cm, respectively.
تاريخ النشر
06/12/2016
الناشر
APPLIED RESEARCH JOURNAL
رقم المجلد
2
رقم العدد
6
ISSN/ISBN
2423-4796
الصفحات
283-292
رابط خارجي
http://arjournal.org/
الكلمات المفتاحية
High strength concrete, continuous beam, pure torsion, absolute vertical displacement, angle of twist.
رجوع