Bond-slip behavior of large high-strength concrete-filled circular steel tubes with different constructions

2020 ◽  
Vol 167 ◽  
pp. 105951 ◽  
Author(s):  
Hongying Dong ◽  
Xuepeng Chen ◽  
Wanlin Cao ◽  
Yizhou Zhao
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Steel Tubes ◽  
Bond Slip ◽  
Strength Concrete

Bond behavior of high strength concrete under reversed pull-out cyclic loading

2002 ◽  
Vol 29 (2) ◽  
pp. 191-200 ◽  
Author(s):  
M Alavi-Fard ◽  
H Marzouk
Keyword(s):  
Cyclic Loading ◽  
Bond Strength ◽  
High Strength Concrete ◽  
Concrete Strength ◽  
High Strength ◽  
Displacement Curve ◽  
Bond Slip ◽  
Strength Concrete ◽  
Pull Out ◽  
Normal Strength

Structures located in seismic zones require significant ductility. It is necessary to examine the bond slip characteristics of high strength concrete under cyclic loading. The cyclic bond of high strength concrete is investigated under different parameters, including load history, confining reinforcement, bar diameter, concrete strength, and the rate of pull out. The bond strength, cracking, and deformation are highly dependent on the bond slip behavior between the rebar and the concrete under cyclic loading. The results of cyclic testing indicate that an increase in cyclic displacement will lead to more severe bond damage. The slope of the bond stress – displacement curve can describe the influence of the rate of loading on the bond strength in a cyclic test. Specimens with steel confinement sustained a greater number of cycles than the specimens without steel confinement. It has been found that the maximum bond strength increases with an increase in concrete strength. Cyclic loading does not affect the bond strength of high strength concrete as long as the cyclic slip is less than the maximum slip for monotonic loading. The behavior of high strength concrete under a cyclic load is slightly different from that of normal strength concrete.Key words: bond, high strength, cyclic loading, bar spacing, loading rate, failure mechanism.

Beam-column behaviour of steel tubes filled with high strength concrete

1994 ◽  
Vol 21 (2) ◽  
pp. 207-218 ◽  
Author(s):  
Helmut G. L. Prion ◽  
Jens Boehme
Keyword(s):  
Cyclic Loading ◽  
High Strength Concrete ◽  
High Strength ◽  
Test Results ◽  
Loading Test ◽  
Steel Tubes ◽  
Strength Concrete ◽  
Main Emphasis ◽  
Thin Steel ◽  
Current Code

The results of an investigation into the behaviour of thin-walled steel tubes filled with high strength concrete are presented. The main emphasis is placed on the level of ductility that can be achieved, considering the fact that neither high strength concrete nor thin steel tubes are individually able to absorb significant amounts of energy under cyclic loading. Results of 26 tests on specimens with a diameter of 152 mm and a wall thickness of 1.7 mm, filled with concrete of characteristic compressive strength ranging between 73 and 92 MPa, are reported. Load combinations on the specimens range from pure axial compression, through various combinations of axial load and bending, to pure bending. Three specimens were subjected to cyclic loading. Test results are compared with design models that are used in current code specifications. Key words: steel tubes, concrete, composite, beam-column, beam, column, experimental.

Interfacial bond-slip behaviour between reinforced high-strength concrete and built-in steel plate with studs

2021 ◽  
Vol 226 ◽  
pp. 111317
Author(s):  
Hongying Dong ◽  
Yizhou Zhao ◽  
Wanlin Cao ◽  
Xuepeng Chen ◽  
Jianwei Zhang
Keyword(s):  
High Strength Concrete ◽  
Steel Plate ◽  
High Strength ◽  
Interfacial Bond ◽  
Bond Slip ◽  
Strength Concrete

FE modelling of the flexural behaviour of square and rectangular steel tubes filled with normal and high strength concrete

2017 ◽  
Vol 119 ◽  
pp. 470-481 ◽  
Author(s):  
Muhammad Faisal Javed ◽  
N.H. Ramli Sulong ◽  
Shazim Ali Memon ◽  
Sardar Kashif Ur Rehman ◽  
Niaz Bahadur Khan
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Flexural Behaviour ◽  
Fe Modelling ◽  
Steel Tubes ◽  
Strength Concrete
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