Experimental investigation of the behavior of laced columns under constant axial load and cyclic lateral load

2013 ◽  
Vol 57 ◽  
pp. 536-543 ◽  
Author(s):  
Behrokh Hosseini Hashemi ◽  
Alireza Poursamad Bonab
Keyword(s):  
Experimental Investigation ◽  
Axial Load ◽  
Lateral Load ◽  
Cyclic Lateral Load ◽  
Constant Axial Load

Axial Load and Cyclic Lateral Load Tests for Composite Columns with Steel Angles

2016 ◽  
Vol 142 (5) ◽  
pp. 04016001 ◽  
Author(s):  
Hyeon-Jong Hwang ◽  
Tae-Sung Eom ◽  
Hong-Gun Park ◽  
Seung-Hwan Lee
Keyword(s):  
Axial Load ◽  
Lateral Load ◽  
Composite Columns ◽  
Cyclic Lateral Load ◽  
Load Tests ◽  
Steel Angles

STRUCTURAL PERFORMANCE OF DAMAGED OPEN-WEB TYPE SRC BEAM-COLUMNS WITH BOLT-CONNECTED BATTEN STEEL PLATES AFTER RETROFITTING

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Takahiro Kume ◽  
Takashi Fujinaga ◽  
Yuping Sun
Keyword(s):  
Axial Load ◽  
Steel Plates ◽  
Analytical Models ◽  
Structural Performance ◽  
Test Results ◽  
Beam Columns ◽  
Cyclic Lateral Load ◽  
Load Carrying ◽  
Lower Load ◽  
Constant Axial Load

In this paper, structural performance of damaged SRC beam-columns with open-web type of batten steel plate after retrofitting was investigated. Three open-web type SRC beam-columns with bolt-connected batten steel plates were fabricated and tested under combined constant axial load and cyclic lateral load. At first, each beam-column was　cyclically loaded to the targeted displacement. After the first loading, the test columns were retrofitted and reloaded till large deformation or failure. The damaged portion of each column was retrofitted with the polymer cement mortar and epoxy resin was injected into the cracks. The measured stiffness of retrofitted columns varied between 71.4% and 85.5% of the initial one. And, test results also indicated that the column which experienced the larger displacement and higher axial load showed lower load carrying capacity, but the others showed approximately the same capacities as the initial columns. Numerical analysis was also conducted to explain the retrofitted columns. Analytical results predicted the experimental behavior fairly well, which verifies the validity of the analytical models in low axial load.

Experimental investigation on concrete-filled corrugated steel tubular column under constant axial load and cyclic load

2021 ◽  
Vol 248 ◽  
pp. 113245
Author(s):  
Yong Fang ◽  
Yuyin Wang ◽  
Mohamed Elchalakani ◽  
Hua Yang
Keyword(s):  
Experimental Investigation ◽  
Axial Load ◽  
Cyclic Load ◽  
Constant Axial Load

Numerical Analysis on Square CFT Stub Columns with Binding Bars under Cyclic Loading Based on OpenSEES

2014 ◽  
Vol 711 ◽  
pp. 525-528
Author(s):  
Ying Tao Wang ◽  
Jian Cai ◽  
Bo Zhen Zheng ◽  
Yue Ling Long
Keyword(s):  
Axial Load ◽  
Influence Factors ◽  
Lateral Load ◽  
Steel Tube ◽  
Load Level ◽  
Envelope Curve ◽  
Finite Element Software ◽  
Cyclic Lateral Load ◽  
Good Agreement ◽  
Main Factor

In order to study the seismic behavior of square concrete-filled steel tubular (CFT) columns with binding bars under cyclic lateral load, numerical simulation is carried out based on the finite element software OpenSEES. The influence factors of seismic performance on square CFT columns with binding bars were studied. The results indicate that the analysis results exhibit good agreement with the experiment data. The axial load level is the main factor that influences the envelope curve. The stiffness decreases with the incresing of axial load level, while the ultimate lateral load increases with the axial load level less than 0.2, and decreases with the axial load level more than 0.3. The thickness of steel tube has a significant influence on the ultimate lateral load, while has little impact on the shape of envelope curve.

scholarly journals Restoring Force Model of Concrete-Filled Square Steel Tubular Columns with Binding Bars

2016 ◽  
Vol 10 (1) ◽  
pp. 179-188 ◽  
Author(s):  
Su Linwang ◽  
Yingtao Wang ◽  
Jian Cai ◽  
Yueling Long
Keyword(s):  
Axial Load ◽  
Peak Load ◽  
Lateral Load ◽  
Steel Tube ◽  
Load Level ◽  
Force Model ◽  
Restoring Force ◽  
Restoring Force Model ◽  
Cyclic Lateral Load ◽  
Stub Columns

This paper presents a trilinear restoring force model based on the test results of two square concrete-filled steel tubular (CFT) stub columns without binding bars and eight square CFT stub columns with binding bars subjected to constant axial load and cyclic lateral load. The effects of binding bars and axial load level on the specimens are considered to determine the feature points of the skeleton curves. Calculation formulas for the characteristic parameters of the model, including the yield load, the peak load and the ultimate load, are given by analyzing the influence of the confinement factor of steel tube, the confinement coefficient of binding bars and the axial load level. Additionally, the hysteretic rule under cyclic lateral load is confirmed. The predicted hysteretic cures and skeleton curves based on the proposed model are in good agreement with the experimental results.

Experimental Investigation of Stiffened Square CFST Columns under Axial Load

2014 ◽  
Vol 919-921 ◽  
pp. 1794-1800
Author(s):  
Xin Zhi Zheng ◽  
Xin Hua Zheng
Keyword(s):  
Experimental Investigation ◽  
Bearing Capacity ◽  
Cross Sections ◽  
Axial Load ◽  
Local Buckling ◽  
Test Results ◽  
Tubular Columns ◽  
Economical Benefit ◽  
Steel Consumption ◽  
Cfst Columns

Abstract: 7 square steel tubular columns were tested to discuss the ultimate axial bearing capacity, ductility performance and the steel consumption under stiffened by steel belts and binding bars of different cross-sections. Test results indicate that only by increasing fewer amounts of steel usage, stiffened square CFST columns with binding bars can not only improve the overall effects of restraint and alleviate regional local buckling between the binding bars, but also improve the bearing capacity of concrete filled square steel tubular columns. The utility benefits and the economical benefit is considerable, deserving extensive use.

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