Tests of Column-Flat Plate Connections

10.14359/2948 ◽  
1992 ◽  
Vol 89 (5) ◽  
Keyword(s):  
Flat Plate ◽  
Plate Connections

Lateral stiffness of reinforced concrete interior flat plate connections

2014 ◽  
Vol 62-63 ◽  
pp. 23-32 ◽  
Author(s):  
Maged A. Youssef ◽  
Mohamed E. Meshaly ◽  
Abu Obayed Chowdhury
Keyword(s):  
Reinforced Concrete ◽  
Flat Plate ◽  
Lateral Stiffness ◽  
Plate Connections

Cyclic behaviour of interior post-tensioned flat plate connections

2006 ◽  
Vol 58 (10) ◽  
pp. 699-711 ◽  
Author(s):  
S. W. Han ◽  
S.-H. Kee ◽  
T. H.-K. Kang ◽  
S.-S. Ha ◽  
J. W. Wallace ◽  
...  
Keyword(s):  
Flat Plate ◽  
Cyclic Behaviour ◽  
Plate Connections ◽  
Post Tensioned

scholarly journals Seismic capacity of reinforced concrete interior flat plate connections

2014 ◽  
Vol 13 (3) ◽  
pp. 827-840 ◽  
Author(s):  
Maged A. Youssef ◽  
Abu Obayed Chowdhury ◽  
Mohamed E. Meshaly
Keyword(s):  
Reinforced Concrete ◽  
Flat Plate ◽  
Seismic Capacity ◽  
Plate Connections

Fracture Model for PT Flat Plate Connections under Seismic Loading

2008 ◽  
Vol 385-387 ◽  
pp. 709-712
Author(s):  
Ki Hoon Moon ◽  
Hwang Bo Jin ◽  
Sang Whan Han
Keyword(s):  
Flat Plate ◽  
Failure Mode ◽  
Analytical Model ◽  
Failure Modes ◽  
Nonlinear Behavior ◽  
Shaking Table ◽  
Cyclic Behavior ◽  
Test Results ◽  
Seismic Regions ◽  
Plate Connections

Post-tensioned (PT) flat plate frames are commonly used to support gravity load in connections in high seismic regions. But test results of many studies indicated that PT flat plate connections were possessed of later-resisting capacity for lateral load though this capacity is not enough to be used by itself in high seismic regions. So this study evaluated the cyclic behavior of PT flat plate connections and developed an analytical model for predicting nonlinear behavior of those to estimate the seismic performance of PT flat plate frames accurately. For this purpose, the test results of static pushover test and shaking table test of 2 story PT flat plate frame were used to evaluate the characters of failure mode for PT flat plate connections and to compare with analysis results. The test results indicated two failure modes which are classified the shear failure mode or the moment failure mode as for shear strength of PT connections to resist lateral loads acted on the specimens. So the analytical model was designed to consider these failure modes of PT connections and the results of comparing with test results predict the nonlinear behavior of PT connections.

Effects of Bottom Reinforcement on Hysteretic Behavior of Posttensioned Flat Plate Connections

2009 ◽  
Vol 135 (9) ◽  
pp. 1019-1033 ◽  
Author(s):  
Sang Whan Han ◽  
Seong-Hoon Kee ◽  
Young-Mi Park ◽  
Sang-Su Ha ◽  
John W. Wallace
Keyword(s):  
Flat Plate ◽  
Hysteretic Behavior ◽  
Plate Connections

scholarly journals FINITE ELEMENT ANALYSIS OF PUNCHING SHEAR-UNBALANCED MOMENT INTERACTIONS AT EDGE COLUMN-FLAT PLATE CONNECTIONS

2021 ◽  
pp. 1-10
Author(s):  
I Ketut Sudarsana ◽  
I Gede Gegiranang Wiryadi ◽  
I Gede Adi Susila
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Flat Plate ◽  
Free Edge ◽  
Shear Capacity ◽  
Punching Shear ◽  
Element Analysis ◽  
Concrete Damage ◽  
Plate Connections ◽  
The Moment

The unbalance moments at the edge connections of flat plate structures induced by lateral forces (i.e. an earthquake) may not always act in parallel directions of the building axes. Most research studied the unbalanced moments in one direction, a few of them in biaxial directions, and none of them in incline directions. This paper presents the results of a nonlinear finite element analysis on punching shear capacity at edge column-slab connections subjected to three directions of the unbalanced moments namely perpendicular, incline 45°, and parallel to the slab free edge in combination with the shear force. A 3-D numerical analysis of ten isolated edge column-plate connections was conducted by applying an appropriate element size, mesh, and calibrated material parameters of the concrete damage plasticity (CDP) model in ABAQUS. the connections were subjected to ten variations of the moment to shear (M/V) ratios. The results show that the punching shear capacity decreases exponentially for the unbalanced moment acting perpendicular and parallel to the slab free edge, and linearly for unbalanced moment incline 45° as the increase in M/V ratio. The M-V interaction at the edge connections depends on the unbalanced moment directions which are slightly different from the ACI 318 code.

Hysteretic behavior of exterior post-tensioned flat plate connections

2006 ◽  
Vol 28 (14) ◽  
pp. 1983-1996 ◽  
Author(s):  
Sang Whan Han ◽  
Seong-Hoon Kee ◽  
Young-Mi Park ◽  
Li-Hyung Lee ◽  
Thomas H.-K. Kang
Keyword(s):  
Flat Plate ◽  
Hysteretic Behavior ◽  
Plate Connections ◽  
Post Tensioned

Examination of Rabbit Fc Crystals

1968 ◽  
Vol 26 ◽  
pp. 140-141
Author(s):  
J. P. Robinson ◽  
P. G. Lenhert
Keyword(s):  
Molecular Weight ◽  
Flat Plate ◽  
Phosphate Buffer ◽  
Asymmetric Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Neutral Ph ◽  
Small Crystals ◽  
Carbon Coated ◽  
Diffraction Patterns

Crystallographic studies of rabbit Fc using X-ray diffraction patterns were recently reported. The unit cell constants were reported to be a = 69. 2 A°, b = 73. 1 A°, c = 60. 6 A°, B = 104° 30', space group P21, monoclinic, volume of asymmetric unit V = 148, 000 A°3. The molecular weight of the fragment was determined to be 55, 000 ± 2000 which is in agreement with earlier determinations by other methods.Fc crystals were formed in water or dilute phosphate buffer at neutral pH. The resulting crystal was a flat plate as previously described. Preparations of small crystals were negatively stained by mixing the suspension with equal volumes of 2% silicotungstate at neutral pH. A drop of the mixture was placed on a carbon coated grid and allowed to stand for a few minutes. The excess liquid was removed and the grid was immediately put in the microscope.

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