Effects of joint aspect ratio on required transverse reinforcement of exterior joints subjected to cyclic loading

2014 ◽  
Vol 7 (5) ◽  
pp. 705-718
Author(s):  
Sung Chul Chun
Keyword(s):  
Cyclic Loading ◽  
Aspect Ratio ◽  
Transverse Reinforcement

An experimental study on cyclic behaviour of reinforced concrete connections

2007 ◽  
Vol 34 (4) ◽  
pp. 565-575 ◽  
Author(s):  
Gerson Moacyr Sisniegas Alva ◽  
Ana Lúcia Homce de Cresce El Debs ◽  
Mounir Khalil El Debs
Keyword(s):  
Compressive Strength ◽  
Reinforced Concrete ◽  
Cyclic Loading ◽  
Seismic Analysis ◽  
Reinforcement Rate ◽  
Shear Capacity ◽  
Transverse Reinforcement ◽  
Rc Beam ◽  
Concrete Compressive Strength ◽  
Cyclic Behaviour

Beam-column joints are considered critical regions within the structural system — especially under seismic loading — requiring careful design. Results from tests on four exterior reinforced concrete (RC) beam-column subassemblages are presented in this paper as part of an experimental investigation on the behaviour of RC beam-column connections under reversal cyclic loading. The influence of joint transverse reinforcement rate and concrete compressive strength on the RC beam-column connection behaviour was investigated. It is concluded that concrete compressive strength is the major factor that governs the joint shear capacity. The experimental results also indicated that joint transverse reinforcement affects the load-displacement response of such connections.Key words: cyclic loading, seismic analysis, reinforced concrete structures, beam-column connection.

Sectional Ductility of Wide Beams

2021 ◽  
Author(s):  
Ornela Lalaj Şen ◽  
Mehmet Çevik ◽  
Ali Haydar Kayhan
Keyword(s):  
Aspect Ratio ◽  
Reinforcement Ratio ◽  
Transverse Reinforcement ◽  
Longitudinal Reinforcement ◽  
Beam Structures ◽  
Wide Beam ◽  
The Mean ◽  
The Moment ◽  
Wide Beams ◽  
High Seismicity

Wide beam structures are categorized as Limited Ductility Class in Turkey and elsewhere and considered not fit for construction in areas of high seismicity. One of the main reasons that wide beam structures are considered to possess limited ductility is the perceived low local ductility of the wide beams, due to the high reinforcement ratios. Wide beams have small depths, which indeed require higher reinforcement ratios to produce the necessary moment capacities, as compared to normal beams. However, the low local ductility of the wide beams can be contested. This paper presents a database of more than 150 beam sections, some of which are normal and some of which are wide beams. The moment-rotation relationships were computed for all the sections, and the sectional ductility was calculated from the yield and ultimate rotations. The relations between sectional ductility and other parameters such as section aspect ratio, longitudinal reinforcement ratio and transverse reinforcement ratio were investigated. An example of the relation between ductility and section properties, in this case section aspect ratio is shown. Both positive and negative ductility were calculated and plotted. It should be noted that beams with section ratio of 0.5 are conventional beams, while the rest are wide beams. The values of ductility vary for all beams, and conventional beams have a slightly wider spread. While these parameters vary within the section database, the sectional ductility oscillates around 30, and no clear correlations could be established for any of the above-mentioned parameters. There were no significant differences between the average sectional ductility of conventional and wide beams. For this dataset, the mean positive ductility was 29.66 and 29.33 for conventional and wide beams respectively, and the mean negative ductility was 28.96 and 31.50 for conventional and wide beams, respectively.

Cyclic Loading Test for Walls of Aspect Ratio 1.0 and 0.5 with Grade 550 MPa Shear Reinforcing Bars

2017 ◽  
Vol 114 (4) ◽  
Author(s):  
Jang-Woon Baek ◽  
Hong-Gun Park ◽  
Jae-Hoon Lee ◽  
Chang-Joon Bang
Keyword(s):  
Cyclic Loading ◽  
Aspect Ratio ◽  
Reinforcing Bars ◽  
Loading Test ◽  
Cyclic Loading Test

Evolution of Crack Aspect Ratio in Sheets Under Tension and Bending Cyclic Loading

2014 ◽  
pp. 263-272
Author(s):  
J. Toribio ◽  
J. C. Matos ◽  
B. González ◽  
J. Escuadra
Keyword(s):  
Cyclic Loading ◽  
Aspect Ratio

Studies on Nonlinear Behavior of Shear Walls of Medium Aspect Ratio under Monotonic and Cyclic Loading

2016 ◽  
Vol 30 (1) ◽  
pp. 04014201 ◽  
Author(s):  
G. V. Rama Rao ◽  
N. Gopalakrishnan ◽  
K. P. Jaya ◽  
K. Muthumani ◽  
G. R. Reddy ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Aspect Ratio ◽  
Nonlinear Behavior ◽  
Shear Walls

Sustainable Reinforced Concrete Design of Structural Walls

2021 ◽  
Vol 891 ◽  
pp. 218-222
Author(s):  
Styliani Papatzani ◽  
Ioannis Giannakis ◽  
Sotirios A. Grammatikos ◽  
Michael D. Kotsovos ◽  
Subrata Chandra Das
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
Natural Resources ◽  
Compressive Force ◽  
Transverse Reinforcement ◽  
Structural Walls ◽  
Structural Wall ◽  
Target Values

Sustainability calls for reduction in the use of natural resources and man-made materials. In light of this, the present study demonstrates the potentials of the reduction of transverse reinforcement in structural walls. A structural wall 1.7 m long was designed following the Greek Code for Reinforced Concrete (GCRC). This wall was then constructed and tested under cyclic loading. The theoretical value of the uncracked stiffness was four times greater than the value calculated after the experiment. The wall was also designed according to the Compressive Force Path method (CFP), which allowed for a significant reduction in the transverse reinforcement for the same target values.

Evolution of Crack Aspect Ratio in Sheets Under Tension and Bending Cyclic Loading

2014 ◽  
pp. 263-272
Author(s):  
J. Toribio ◽  
J.C. Matos ◽  
B. González ◽  
J. Escuadra
Keyword(s):  
Cyclic Loading ◽  
Aspect Ratio

Suggestion of the Delamination Aspect Ratio in GLARE

2005 ◽  
Vol 297-300 ◽  
pp. 1510-1515
Author(s):  
Cheol Woong Kim ◽  
Sam Hong Song ◽  
Dong Joon Oh
Keyword(s):  
Cyclic Loading ◽  
Aspect Ratio ◽  
Crack Size ◽  
The Other ◽  
Other Hand ◽  
Major Parameter ◽  
Delamination Area ◽  
Delamination Behavior

The applicability of GLARE is restricted due to the frequent delamination of different materials at interlaminar. The previous researches showed that the major parameter to control the delamination of GLARE was a crack (a). On the other hand, it was also shown that a delamination width (b) could strongly effect on the delamination behavior. Therefore, the aim of this research is to define the delamination behavior using the above correlation. In conclusions, it was shown that the delamination aspect ratio (b/a) was slowly decreased and the delamination area rate (ADR) was increased as the normalized crack size (a/W) was increased. The effect of the delamination shape was strong at the beginning of the cyclic loading but it was gradually diminished.

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