scholarly journals EXPERIMENTAL STUDY ON THE ULTIMATE STRENGTH AND DUCTILITY OF STEEL COLUMNS SUBJECTED TO CYCLIC AND ECCENTRIC AXIAL LOAD

2016 ◽  
Vol 72 (1) ◽  
pp. 92-106
Author(s):  
Masahide MATSUMURA ◽  
Kiyoshi ONO ◽  
Junpei YOSHIYAMA ◽  
Takashi YAMAGUCHI
Keyword(s):  
Experimental Study ◽  
Ultimate Strength ◽  
Axial Load ◽  
Steel Columns ◽  
Strength And Ductility

Axial Load Behavior of Rectangular CFT Stub Columns with Binding Bars

2007 ◽  
Vol 10 (5) ◽  
pp. 551-565 ◽  
Author(s):  
Jian Cai ◽  
Yue-Ling Long
Keyword(s):  
Ultimate Strength ◽  
Axial Load ◽  
Local Buckling ◽  
Concrete Core ◽  
Cross Sectional ◽  
Composite Columns ◽  
Proposed Model ◽  
Load Behavior ◽  
Stub Columns ◽  
Strength And Ductility

This paper presents an experimental study on the axial load behaviour of rectangular concrete-filled steel tubular (R-CFT) stub columns with binding bars. Eight specimens were concentrically loaded in compression to failure in order to investigate the effects of the binding bars, depth-to-wall thickness ratio and cross-sectional aspect ratio on the ultimate strength and ductility of the composite columns. Experimental results indicate that the binding bars increase the confinement of the concrete core and delay local buckling of the tube. The results also show that R-CFT columns with binding bars have better ductility than those without binding bars. A model is proposed to predict the ultimate strength of the specimens. A comparison of the ultimate strengths between tests and design codes shows that the proposed model gives reasonable predictions of the ultimate strength of rectangular CFT stub columns with binding bars while the codes EC4 (1996), AIJ (1997) and GJB (2001) conservatively estimate the ultimate strength by 17.6%, 22.9% and 9.7% respectively.

Experimental study on ultimate strength of CK20 steel cylindrical panels subjected to compressive axial load

2010 ◽  
Vol 10 (2) ◽  
pp. 117-130 ◽  
Author(s):  
M. SHARIATI ◽  
M. SEDIGHI ◽  
J. SAEMI ◽  
H.R. EIPAKCHI ◽  
H.R. ALLAHBAKHSH
Keyword(s):  
Experimental Study ◽  
Ultimate Strength ◽  
Axial Load ◽  
Cylindrical Panels ◽  
Compressive Axial Load

Experimental study on strength and ductility of carbonated concrete elements

2002 ◽  
Vol 16 (3) ◽  
pp. 187-192 ◽  
Author(s):  
Jianzhuang Xiao ◽  
Jie Li ◽  
Bolong Zhu ◽  
Ziyan Fan
Keyword(s):  
Experimental Study ◽  
Concrete Elements ◽  
Strength And Ductility

Experimental Study of the Rotary Filling Piles with Large-Diameter under the Axial Load

2012 ◽  
Vol 594-597 ◽  
pp. 527-531
Author(s):  
Wan Qing Zhou ◽  
Shun Pei Ouyang
Keyword(s):  
Experimental Study ◽  
Axial Load ◽  
Load Transfer ◽  
Soft Soil ◽  
Large Diameter ◽  
Shaft Resistance ◽  
Tip Resistance ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Deep Soft Soil

Based on the experimental study of rotary filling piles with large diameter subjected to axial load in deep soft soil, the bearing capacity behavior and load transfer mechanism were discussed. Results show that in deep soft soil foundation, the super–long piles behave as end-bearing frictional piles. The exertion of the shaft resistance is not synchronized. The upper layer of soil is exerted prior to the lower part of soil. Meanwhile, the exertion of shaft resistance is prior to the tip resistance. For the different soil and the different depth of the same layer of soil, shaft resistance is different.

Behavior of implant and abutment sets of three different connections during the non-axial load application: An in vitro experimental study using a radiographic method

2021 ◽  
pp. 1-12
Author(s):  
Sergio Alexandre Gehrke ◽  
Berenice Anina Dedavid ◽  
José Manuel Granero Marín ◽  
Luigi Canullo
Keyword(s):  
Experimental Study ◽  
Digital Radiography ◽  
Axial Load ◽  
In Vitro Study ◽  
Vitro Study ◽  
Load Application ◽  
Radiographic Method ◽  
Radiography System ◽  
Torque Values

BACKGROUND: During the masticatory cycle, loads of different intensities and directions are received by the dental structures and/or implants, which can cause micromovements at the junction between the abutment and implant. OBJECTIVE: The objective of this in vitro study was to evaluate the behavior of three different implant connections subjected to different load values using a digital radiography system. Additionally, the torque values for removing the abutment screws were also measured and compared. METHODS: Ninety sets of implant and abutment (IA) were used, divided into three groups according to the type of connection (n = 30 per group): EH group, external hexagon type connection; IH group, internal hexagon connection; and, MT group, Morse taper connection. RESULTS: MT group showed the better vertical misfit behavior at the three intensity of load applied, in comparison with EH and IH groups. In the analysis of torque maintenance (detorque test), MT group showed higher values of detorque when compared with the measured values of EH and IH groups (p < 0.001). CONCLUSIONS: The IA sets of EH and IH groups showed a microgap in all levels of applied loads, unlike the MT group this event was not observed. In the detorque test, MT group increase in the torque values when compared to the initial torque applied, unlike EH and IH groups showed a decrease in the initially torque applied in all conditions tested. A positive correlation was detected between the misfit and detorque values.

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