کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1455164 | 989023 | 2011 | 14 صفحه PDF | دانلود رایگان |
Three-dimensional (3-D) effects in short deep beams without stirrups that failed in shear were investigated experimentally and analytically. Two deep beams with a shear span to depth ratio (a/d) of 0.5 and with different beam widths were tested. The effect of beam width on load-carrying capacity, failure mode, crack pattern and 3-D behavior was investigated, and shape effect due to beam width was clarified. In addition, the beams were analyzed by the 3-D rigid-body-spring model (RBSM). RBSM is a discrete form of modeling that presents realistic behavior from cracking to failure, and 3-D RBSM is applicable to simulate 3-D behavior as well as the confinement effect of concrete. Analytical results in terms of load–displacement curves and crack pattern are compared with the experimental results. Three-dimensional deformations, strut widths and cross-sectional stress distribution are investigated analytically and compared with the experimental results to determine 3-D behavior in detail. The 3-D effects in short deep beams are clarified.
► The analytical tool used is the 3-D RBSM.
► The applicability of the analytical model is confirmed.
► 3-D effect and the effect of beam width in short deep beams are clarified.
► The ductile behavior is observed as a result of the increase in beam width.
► 3-D effect is important due to spalling on surface and confinement in middle section.
Journal: Cement and Concrete Composites - Volume 33, Issue 9, October 2011, Pages 978–991