Crack Resistance of Connections of Cross Shaped Steel Encased Ultra High-Strength Concrete Column to RC Beam under Cycle Loads

2010 ◽  
Vol 150-151 ◽  
pp. 1005-1008
Author(s):  
Chang Wang Yan ◽  
Jin Qing Jia ◽  
Ju Zhang
Keyword(s):  
Crack Resistance ◽  
High Strength Concrete ◽  
Engineering Application ◽  
Load Ratio ◽  
High Strength ◽  
Rc Beam ◽  
Strength Concrete ◽  
Axial Load Ratio ◽  
Resistance Performance ◽  
Good Agreement

In order to investigate the crack resistance capacity of cross shaped steel encased ultra high-strength concrete (CSSEUHSC) column to reinforced concrete (RC) beam connection subjected to reversal cycle load, six interior joint specimens were tested with various axial load ratio nt and volumetric stirrup ratio ρv. A discussion on the crack resistance capacity was presented. Calculation methods of crack resistance capacity were deduced and calculating results were in good agreement with the experimental results. The research results indicated that parameters of CSSEUHSC column to RC beam connection with better crack resistance performance may be referred for engineering application.

Calculation Methods on Crack Resistance Capacity of SRUHSC Column to SRC Beam Joint Subjected to Reversal Cycle Load

2010 ◽  
Vol 152-153 ◽  
pp. 1835-1838
Author(s):  
Ju Zhang ◽  
Chang Wang Yan ◽  
Jin Qing Jia
Keyword(s):  
Crack Resistance ◽  
High Strength Concrete ◽  
High Strength ◽  
Test Results ◽  
Steel Reinforced Concrete ◽  
Strength Concrete ◽  
Concrete Frame ◽  
Seismic Area ◽  
Resistance Performance ◽  
Good Agreement

In the joint core regions of steel reinforced ultra high strength concrete frame, the forces are complicated. In seismic area or under some exceptional conditions, it is difficult to repair for joint when cracks occur, so crack resistance performance is important. Based on the experiment of steel reinforced ultra high strength concrete (SRUHSC) column to steel reinforced concrete (SRC) beam joint subjected to reversal cycle load, the crack resistance capacity is studied and applied calculation method for crack resistance capacity is proposed. Compared with the test results, the calculated results are in good agreement with them.

Crack Pattern and Ductility of Connections Composed of CSSEUHSC Columns and RC Beams Subjected to Reversal Cycle Loads

2010 ◽  
Vol 44-47 ◽  
pp. 3884-3887
Author(s):  
Ju Zhang ◽  
Chang Wang Yan ◽  
Jin Qing Jia
Keyword(s):  
Crack Resistance ◽  
Axial Load ◽  
Engineering Application ◽  
Load Ratio ◽  
High Strength ◽  
Crack Pattern ◽  
Rc Beams ◽  
Axial Load Ratio ◽  
Test Parameters ◽  
Resistance Performance

In order to investigate the crack pattern and ductility of connection composed of cross shaped steel encased ultra high strength concrete (CSSEUHSC) columns and reinforced concrete (RC) beams subjected to reversal cycle load, six interior connection specimens were tested with various axial load ratio and volumetric stirrup ratio. A discussion on the ductility and crack pattern was presented. It was found that cracks appeared in the connection core regions and at the beam end for all specimens, and that axial load ratio had more influence on the crack resistance capacity. The experimental results indicated that test parameters of connection composed of CSSEUHSC columns and RC Beams with good crack resistance performance may be referred for engineering application.

Crack Pattern and Ductility of Steel Reinforced Ultra High Strength Concrete Composite Joint Subjected to Reversal Cycle Load

2009 ◽  
Vol 417-418 ◽  
pp. 845-848 ◽  
Author(s):  
Chang Wang Yan ◽  
Jin Qing Jia ◽  
Ju Zhang
Keyword(s):  
High Strength Concrete ◽  
Plastic Hinge ◽  
Engineering Application ◽  
Load Ratio ◽  
High Strength ◽  
Strength Concrete ◽  
Weak Beam ◽  
Composite Joint ◽  
And Performance ◽  
Beam Plastic Hinge

In order to investigate the seismic damage and performance of steel reinforced ultra high strength concrete composite joint subjected to reversal cycle load, six interior strong-column-weak-beam joint specimens were tested with various axial load ratio and volumetric stirrup ratio. A discussion on the crack mode and ductility was presented. It was found that all joint specimens failed in bending with a beam plastic hinge in a ductile manner, with crack propagation different from the weak-column-strong-beam joint. The experimental results indicated that test parameters of the steel reinforced ultra high strength concrete composite joint with good seismic performance may be referred for engineering application.

Crack Pattern and Ductility of Connections Composed of CSSEUHSC Columns and SEC Beams under Cycle Loads

2011 ◽  
Vol 50-51 ◽  
pp. 396-399
Author(s):  
Chang Wang Yan ◽  
Ju Zhang ◽  
Jin Qing Jia
Keyword(s):  
Crack Resistance ◽  
High Strength Concrete ◽  
Plastic Hinge ◽  
Engineering Application ◽  
High Strength ◽  
Crack Pattern ◽  
Core Region ◽  
Test Parameters ◽  
Beam Plastic Hinge ◽  
Resistance Performance

In order to investigate the crack pattern and ductility of connection composed of cross shaped steel encased ultra high strength concrete (CSSEUHSC) columns and steel encased concrete (SEC) beams under cycle loads, six interior connection specimens were tested in the laboratory. It was found that cracks appeared in the connection core regions and at the beam end for all specimens, and all the connections behaved in a ductile manner and failed in bending with a beam plastic hinge and shearing in the connection core region. The experimental results indicated that test parameters of connection composed of CSSEUHSC columns and SEC beams with good crack resistance performance may be referred for engineering application.

Crack Pattern of SRUHSC Column and SRC Beam Joint Subjected to Reversal Cycle Load

2010 ◽  
Vol 152-153 ◽  
pp. 1125-1128
Author(s):  
Ju Zhang ◽  
Chang Wang Yan ◽  
Jin Qing Jia
Keyword(s):  
Crack Resistance ◽  
Axial Load ◽  
Shear Fracture ◽  
Engineering Application ◽  
Load Ratio ◽  
High Strength ◽  
Crack Pattern ◽  
Steel Reinforced Concrete ◽  
Axial Load Ratio ◽  
Test Parameters

In order to investigate the crack pattern of steel reinforced ultra high strength concrete (SRUHSC) column and steel reinforced concrete (SRC) beam joint subjected to reversal cycle load, six interior joint specimens were tested with various axial load ratio and volumetric stirrup ratio. A discussion on the ductility and crack pattern was presented. It was found that all joint specimens failed in shear fracture in the joint core regions and that axial load ratio had more influence on the crack resistance capacity. The experimental results indicated that test parameters of SRUHSC column and SRC beam joint with good crack resistance performance may be referred for engineering application.

Yield Displacement Calculation Method of High-Strength Concrete Shear Wall

2013 ◽  
Vol 353-356 ◽  
pp. 3382-3386 ◽  
Author(s):  
Hua Jing Zhao ◽  
Xing Wen Liang ◽  
Can Song
Keyword(s):  
Cross Section ◽  
High Strength Concrete ◽  
Axial Load ◽  
Load Ratio ◽  
High Strength ◽  
Shear Wall ◽  
Strength Concrete ◽  
Axial Load Ratio ◽  
Yield Displacement ◽  
Calculation Results

Considering high compressive strength of high-strength concrete, it is assumed that concrete compressive stress of the cross-section compression zone is linear distribution when the cross-section of high-strength concrete shear wall reaches yield situation. Based on the plane section assumption, the yield curvature formula of shear wall section is obtained by using moment - curvature analysis method. The parameters effecting yield curvature of high-strength concrete shear wall are studied by using the yield curvature formula. The results show that longitudinal reinforced yield strain is the most influencing factor of the yield curvature in addition to axial load ratio. This paper presents yield curvature formula considering the impact of axial load ratio and boundary reinforcement yield stress through the regression analysis of calculation results. On this basis, the vertex yield displacement formula of high-strength concrete shear wall is proposed, and the calculation results of formula correspond to the vertex yield displacement experimental values of the 12 high-strength concrete cantilever wall well.

Seismic Performance of High Titanium Heavy Slag High Strength Concrete Columns

2012 ◽  
Vol 174-177 ◽  
pp. 455-459 ◽  
Author(s):  
Xiao Wei Li ◽  
Xue Wei Li ◽  
Xin Yuan
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
High Strength Concrete ◽  
Load Ratio ◽  
High Strength ◽  
Scale Model ◽  
Transverse Reinforcement ◽  
Reinforced Concrete Column ◽  
Displacement Ductility ◽  
Strength Concrete

For expedite the development of high titanium heavy slag concrete, eight high titanium heavy slag high strength reinforced concrete (HTHS-HSRC) scale model column are studied. The eight HTHS-HSRC model columns are tested under reversed horizontal force. Primary experimental parameters include axial load ratio varying from 0.3 to 0.5, volumetric ratios of transverse reinforcement ranging from 1.38% to 1.56%, strength of high titanium heavy slag high strength concrete varying from 55.9 to 61.6 N/mm2 and configurations of transverse reinforcement. It is found from the test result that HTHS-HSRC model columns provides comparable seismic performance to those usually used reinforced concrete column in terms of member ductility, hysteretic and energy dissipation capacity. Primary Factors of Displacement Ductility of Model Columns are also discussed.

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