scholarly journals ELASTO-PLASTIC FLEXURAL DEFORMATION OF CONCRETE FILLED STEEL TUBE BEAM-COLUMNS : I : One Way Bending under Constant Axial Load-Tests and Analysis

1975 ◽  
Vol 233 (0) ◽  
pp. 95-100
Author(s):  
MINORU YAMADA ◽  
KAZUMI SAKAE ◽  
KAZUO KONDOH
Keyword(s):  
Axial Load ◽  
Steel Tube ◽  
Concrete Filled Steel Tube ◽  
Beam Columns ◽  
Load Tests ◽  
Constant Axial Load

Experimental study on the cyclic behavior of ultra high performance concrete–filled steel tube beam-columns

2019 ◽  
Vol 23 (5) ◽  
pp. 969-978
Author(s):  
Jian-gang Wei ◽  
Jun Zhou ◽  
Jiang-nan Huang ◽  
Hui-hui Yuan ◽  
Qing-wei Huang
Keyword(s):  
Axial Load ◽  
High Performance ◽  
High Performance Concrete ◽  
Load Ratio ◽  
Steel Tube ◽  
Cyclic Behavior ◽  
Ultra High Performance Concrete ◽  
Concrete Filled Steel Tube ◽  
Beam Columns ◽  
Axial Load Ratio

This article experimentally investigates the cyclic behavior of ultra high performance concrete–filled steel tube beam-columns. A total of eight specimens were tested. The considered parameters were the axial load ratio and steel ratio. The results showed that all ultra high performance concrete–filled steel tube beam-columns had a very good cyclic behavior without significant pinching. Increasing the axial load ratio results in the decrease of strength and ductility, but it has no obvious influence on the initial flexural stiffness. Reducing the steel ratio results in the decrease of the strength, stiffness and ductility, and energy dissipation capacity.

A distributed plasticity model for concrete-filled steel tube beam-columns with interlayer slip

1998 ◽  
Vol 20 (8) ◽  
pp. 663-676 ◽  
Author(s):  
Jerome F. Hajjar ◽  
Paul H. Schiller ◽  
Aleksandr Molodan
Keyword(s):  
Steel Tube ◽  
Plasticity Model ◽  
Concrete Filled Steel Tube ◽  
Beam Columns ◽  
Interlayer Slip

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.

Cumulative limit axial load for concrete-filled square steel tube columns under combined cyclic lateral and constant axial load

2010 ◽  
Vol 10 (3) ◽  
pp. 283-293 ◽  
Author(s):  
Ilseung Yang ◽  
Jinan Chung ◽  
Kyungsoo Chung ◽  
Younghan Jung
Keyword(s):  
Axial Load ◽  
Steel Tube ◽  
Square Steel Tube ◽  
Constant Axial Load

scholarly journals Experimental Study of H-Shaped Honeycombed Stub Columns with Rectangular Concrete-Filled Steel Tube Flanges Subjected to Axial Load

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Jing Ji ◽  
Maomao Yang ◽  
Zhichao Xu ◽  
Liangqin Jiang ◽  
Huayu Song
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Axial Load ◽  
Slenderness Ratio ◽  
Steel Tube ◽  
Design Guidelines ◽  
Correction Function ◽  
Concrete Filled Steel Tube ◽  
Load Displacement ◽  
Stub Columns

The behavior of H-shaped honeycombed stub columns with rectangular concrete-filled steel tube flanges (STHCCs) subjected to axial load was investigated experimentally. A total of 16 specimens were studied, and the main parameters varied in the tests included the confinement effect coefficient of the steel tube (ξ), the concrete cubic compressive strength (fcu), the steel web thickness (t2), and the slenderness ratio of specimens (λs). Failure modes, load-displacement curves, load-strain curves of the steel tube flanges and webs, and force mechanisms were obtained by means of axial compression tests. The parameter influences on the axial compression bearing capacity and ductility were then analyzed. The results showed that rudder slip diagonal lines occur on the steel tube outer surface and the concrete-filled steel tube flanges of all specimens exhibit shear failure. Specimen load-displacement curves can be broadly divided into elastic deformation, elastic-plastic deformation, and load descending and residual deformation stages. The specimen axial compression bearing capacity and ductility increase with increasing ξ, and the axial compression bearing capacity increases gradually with increasing fcu, whereas the ductility decreases. The ductility significantly improves with increasing t2, whereas the axial compression bearing capacity increases slightly. The axial compression bearing capacity decreases gradually with increasing λs, whereas the ductility increases. An analytical expression for the STHCC short column axial compression bearing capacity is established by introducing a correction function ( w ), which has good agreement with experimental results. Finally, several design guidelines are suggested, which can provide a foundation for the popularization and application of this kind of novel composite column in practical engineering projects.

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