scholarly journals Failure Behavior of Hollow Circular RC Column According to the Spacing of Spirals

2016 ◽  
Vol 20 (6) ◽  
pp. 46-55
Author(s):  
Seong-Hyun Ko
Keyword(s):  
Failure Behavior ◽  
Rc Column

scholarly journals IMPROVEMENT OF BEARING FAILURE BEHAVIOR OF S BEAM – RC COLUMN JOINT USING PERFOBOND PLATE CONNECTOR

2010 ◽  
Vol 75 (655) ◽  
pp. 1727-1735 ◽  
Author(s):  
Yasushi NISHIMURA ◽  
Mikihito YOSHIDA ◽  
Keiichi SAITO ◽  
Naoki AOYAMA
Keyword(s):  
Failure Behavior ◽  
Bearing Failure ◽  
Rc Column ◽  
Column Joint

scholarly journals IMPROVEMENT OF BEARING FAILURE BEHAVIOR OF T-SHAPED S BEAM – RC COLUMN JOINTS USING PERFOBOND PLATE CONNECTORS

2018 ◽  
Author(s):  
Mikihito Yoshida ◽  
Yasushi Nishimura
Keyword(s):  
Shear Strength ◽  
Shear Failure ◽  
Reinforcement Ratio ◽  
The Other ◽  
Failure Behavior ◽  
Transverse Reinforcement ◽  
Bearing Failure ◽  
Test Results ◽  
Rc Column ◽  
Reinforcing Bar

For the joints composed of steel beams and reinforced concrete columns, shear failure and bearing failure are the key failure modes. The shear failure indicates stable hysteresis loop without the strength degradation. On the other hand, the bearing failure mode indicates large pinching and strength degration after the attainment of the maximum load.Accordingly, bearing failure in the joints should not be caused in RCS system.To improve the bearing failure behavior of S beam - RC column joint, joint details using perfobond plate connectors were proposed. Perfobond plate connectors were attached on the upper and bottom flanges at right angles to the steel flange. The objective of this study is to clarify the effectiveness of proposed joints details experimentally and theoretically.Six specimens were tested. All specimens were T-shaped planar beam - column joints with 350mm square RC column and S beams with the width of 125mm and the depth of 300mm. The beams were all continuous through the column.Perfobond plate connectors were attached on the bottom flanges at right angles to the steel flange.Three holes were set up in the perfobond plate connectors. The experimental variable was the transverse reinforcement ratio of the joints. The transverse reinforcement ratio of the joints was 0.181% and 0.815%. For each transverse reinforcement ratio of the joints, specimen without the perfobond plate connectors, specimen with the perfobond plate connectors and specimen with the reinforcing bar inserted the hole of perfobond plate connectors were planned.For all specimens, the hysteresis loop showed the reversed S-shape. However, energy dissipation for specimens for specimens with perfobond plate connectors was larger than of specimen without perfobond plate connectors. Bearing strength of specimens with perfobond plate connectors was larger than that of specimen without perfobond plate connectors. From the test results, shear strength of concrete connector a hole was 0.7 times compression strength of concrete.On the other hand, shear strength of inserted reinforcing bar was 1.25 times shear strength of reinforcing bar.Based on the stress transferring mechanism and resistance mechanism of joints proposed by authors, the design formulae of joints with perfobond plate connectors were proposed.The predictions were shown to be in good agreement with the test results.

Predicting Failure Behavior of Reinforced Concrete Columns Subjected to Cyclic Loading

2011 ◽  
Vol 145 ◽  
pp. 309-313
Author(s):  
Chia Hung Lin ◽  
Chin Hsiung Loh
Keyword(s):  
Reinforced Concrete ◽  
Failure Mode ◽  
Shear Capacity ◽  
Flexural Behavior ◽  
Cyclic Test ◽  
Design Stage ◽  
Failure Behavior ◽  
Rc Column ◽  
Flexural Failure ◽  
Truss Model

A procedure derived from truss model was established to predict rapidly the failure mode of a reinforced concrete column in the design stage. Failure mode of an RC column can be classified as either shear or flexural failure. In general, an RC column can be assumed to be a beam-column member subjected to combined axial, flexural, and shear forces. It is difficulty to predict its overall failure behavior without a priori knowledge. Thus in this paper, the shear capacity is isolated independently from the complex behavior of a column based on the concept of well known truss model. The shear capacity can be viewed as the contribution of diagonal truss of a truss model while the longitudinal truss modeled the combined axial-flexural behavior. The obtained shear capacity using the proposed method can be compared with flexural capacity obtained from pushover analysis to predict whether shear failure or flexural failure will occur during cyclic test of an RC column. Five cyclic test results were compared to the predicted analytical results. All five failure modes are successfully predicted using the proposed procedure.

Interpreting Laser-Based Fault Localization Results: Case Studies

2019 ◽  
Author(s):  
Sukho Lee ◽  
John van den Biggelaar ◽  
Marc van Veenhuizen
Keyword(s):  
Case Studies ◽  
Circuit Design ◽  
High Sensitivity ◽  
Failure Behavior ◽  
Process Technology ◽  
Resistance Change ◽  
Voltage Imaging ◽  
Root Cause ◽  
First Case ◽  
Proper Interpretation

Abstract Laser-based dynamic analysis has become a very important tool for analyzing advanced process technology and complex circuit design. Thus, many good reference papers discuss high resolution, high sensitivity, and useful applications. However, proper interpretation of the measurement is important as well to understand the failure behavior and find the root cause. This paper demonstrates this importance by describing two insightful case studies with unique observations from laser voltage imaging/laser voltage probing (LVP), optical beam induced resistance change, and soft defect localization (SDL) analysis, which required an in-depth interpretation of the failure analysis (FA) results. The first case is a sawtooth LVP signal induced by a metal short. The second case, a mismatched result between an LVP and SDL analysis, is a good case of unusual LVP data induced by a very sensitive response to laser light. The two cases provide a good reference on how to properly explain FA results.

Seismic Capacity of RC Column Reinforced by Hydraulic Resin and Fiber Sheets

2016 ◽  
Vol 54 (9) ◽  
pp. 930-935
Author(s):  
M. Suzuki ◽  
R. Kasakura ◽  
Y. Kato ◽  
T. Maki
Keyword(s):  
Seismic Capacity ◽  
Rc Column

On multiaxial failure behavior of closed-cell aluminum foams under medium strain rates

2021 ◽  
Vol 160 ◽  
pp. 107278
Author(s):  
Erdong Wang ◽  
Guangyong Sun ◽  
Gang Zheng ◽  
Qing Li
Keyword(s):  
Failure Behavior ◽  
Strain Rates ◽  
Aluminum Foams ◽  
Closed Cell
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