Displacement-Based Deformation Capacity Design Method of Steel Reinforced Concrete Structural Walls with High Axial Load Ratio

2009 ◽  
Author(s):  
Kai Ze Ma ◽  
Xingwen Liang
Keyword(s):  
Reinforced Concrete ◽  
Axial Load ◽  
Design Method ◽  
Load Ratio ◽  
Deformation Capacity ◽  
Capacity Design ◽  
Structural Walls ◽  
Steel Reinforced Concrete ◽  
Axial Load Ratio ◽  
Displacement Based

Research on Deformation Capacity Design Method of Steel High Performance Concrete Structural Walls

2010 ◽  
Vol 163-167 ◽  
pp. 1540-1546
Author(s):  
Liang Bai ◽  
Tian Hua Zhou ◽  
Xing Wen Liang
Keyword(s):  
Axial Load ◽  
High Performance ◽  
High Performance Concrete ◽  
Design Method ◽  
Load Ratio ◽  
Deformation Capacity ◽  
Capacity Design ◽  
Structural Walls ◽  
Axial Load Ratio ◽  
Characteristic Value

The cyclic loading test of three steel high performance concrete(SHPC) structural walls was conducted and the failure pattern of the structural walls under the combined effect of axial force, bending moment, and shear force was researched. Based on the experimental results, the displacement-based deformation capacity design method was proposed for SHPC structural walls. It is obtained for the interrelated relationships among the ultimate drift ratio, the axial load ratio, the characteristic value of stirrup content and the aspect ratio. It is concluded that the increasing the characteristic value of stirrup content and limiting the axial load ratio were effective means to improve ductility. The characteristic value of stirrup content of SHPC structural walls with different ultimate drift ratio and axial load ratio were proposed and the conclusion can be referred by the design of SHPC structural walls.

Nonlinear Full-Range Analysis of Steel Reinforced Concrete L-Shaped Columns

2011 ◽  
Vol 243-249 ◽  
pp. 149-155 ◽  
Author(s):  
Zhe Li ◽  
Shao Ji Chen ◽  
Ye Ni Wang ◽  
Cui Ping Zhang ◽  
Jing Xu
Keyword(s):  
Reinforced Concrete ◽  
Axial Load ◽  
Concrete Strength ◽  
Full Range ◽  
Load Ratio ◽  
Neutral Axis ◽  
Steel Reinforced Concrete ◽  
Axial Load Ratio ◽  
Section Size ◽  
Load Angle

The neutral axis change along with axial load ratio, load angle, section size etc. For the neutral axis of SRCLSC(steel reinforced concrete L-shaped column) is neither plumb with the plane that the moment work on, nor parallel with borderlines of SRCLSC section, it is difficult to get loading capacity and ductility of SRCLSC on biaxial eccentric loading. Based on the plane-section assumption, a method for the nonlinear analysis of complete response process for ductility of 15 SRCLSC..It include 36 sets for load angle, 6 sets for axial load ratio, 3 sets for concrete strength, 3 sets for the content of steel, 2 sets for steel style, 3 sets for stirrup ratio, 3 sets for steel location, 3 sets for section size, 3 sets for stirrup diameter about SRCLSC. The ductile behavior of L-shaped, with calculating 1068 loading conditions,are investigated. It concluded that axial load ratio, load angle, and ratio of the spacing of stirrups and longitudinal reinforcement’s diameter (s/d) are most important factors.

Study on the Bearing Capacity and Ductility of Steel Reinforced Concrete T-Shaped Columns

2011 ◽  
Vol 368-373 ◽  
pp. 28-32
Author(s):  
Zhe Li ◽  
Shao Ji Chen ◽  
Cui Ping Zhang ◽  
Shuai Zhang
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Load ◽  
Concrete Strength ◽  
Load Ratio ◽  
Steel Reinforced Concrete ◽  
Axial Load Ratio ◽  
Curvature Ductility ◽  
Ductile Behavior ◽  
Load Angle

Compared with reinforced concrete shaped columns, bearing capacity and ductility of steel reinforced concrete shaped columns are significantly improved, so it is with theoretical significance and practical application of value to research. Based on the plain cross section presume, with material T-section boundary calculation unit, 15 steel reinforced concrete T-shaped columns(SRCTSC) have made nonlinear full-rang numerical analysis. It demonstrates that the most adverse curvature ductility load angle of SRCCRSC is 180°.Loading angle ( ), axial compression ratio ( ), and the ratio of spacing and diameter of longitudinal reinforcements (s/d) are the principal factors in curvature ductility of SRCTSC subjected to biaxial eccentric compression. It include 36 sets for load angle, 6 sets for axial load ratio, 3 sets for concrete strength, 3 sets for the content of steel, 2 sets for steel style, 3 sets for stirrup ratio, 3 sets for steel location, 3 sets for section size, 3 sets for stirrup diameter about SRCTSC. The ductile behavior of T-shaped, with calculating 1068 loading conditions, are investigated. It concluded that axial load ratio, load angle, and ratio of the spacing of stirrups and longitudinal reinforcement’s diameter (s/d) are most important factors.

scholarly journals The Effect of Mechanical and Geometric Parameters on the Shear and Axial Failures of Columns in Reinforced Concrete Frames

2015 ◽  
Vol 37 ◽  
pp. 247 ◽  
Author(s):  
Hooman Farahmand ◽  
Mohammad Reza Azadi Kakavand ◽  
Shahriar Tavousi Tafreshi ◽  
Pooria Hafiz Hafiz
Keyword(s):  
Reinforced Concrete ◽  
Axial Load ◽  
Shear Failure ◽  
Load Ratio ◽  
Analytical Models ◽  
Transverse Reinforcement ◽  
Effective Parameters ◽  
Concrete Frames ◽  
Research Activities ◽  
Axial Load Ratio

Experimental research activities and post-earthquake considerations have demonstrated that reinforcedconcrete columns with light or widely spaced transverse reinforcement are vulnerable to shear failure duringearthquakes. According to this point by using failure limit curve, we can assess the effective parameters in shearand axial failure of reinforced concrete columns in framed buildings. In the current study by flexural, shear andaxial springs which are used in series, shear and axial failures and important effective parameters have beenassessed, Besides 5,10 and 15 story models with different amounts of initial axial load ratio have been analyzedby nonlinear push-over analysis. The results of analytical models contain behavior of buildings based on differentinitial axial load ratio and different spacing of transverse reinforcement are compared

scholarly journals Seismic Failure Modes and Deformation Capacity of Reinforced Concrete Columns under Cyclic Loads

2017 ◽  
Vol 62 (1) ◽  
pp. 80-91 ◽  
Author(s):  
Ma Ying ◽  
Gong Jin-xin
Keyword(s):  
Reinforced Concrete ◽  
Aspect Ratio ◽  
Axial Load ◽  
Failure Modes ◽  
Shear Failure ◽  
Hysteresis Loops ◽  
Load Ratio ◽  
Deformation Capacity ◽  
Static Test ◽  
Total Displacement

This paper investigates the seismic failure modes and horizontal deformation capacity of reinforced concrete square columns based on the pseudo-static test. The controlled variables include shear aspect ratio, axial load ratio and stirrup spacing. The seismic failure modes, the inelastic deformation capacity after yielding and the deformation components due to flexure, shear and anchorage slip of the RC columns were analyzed, especially flexural-shear failure. The results show that decreasing shear aspect ratio, or increasing axial load or stirrup spacing can result in the change of column failure mode from flexural failure to flexural- shear failure or shear failure, the pinching of hysteresis loops, the reductions of hysteresis loop area and deformation capacity. With the increase of total displacement, all three displacement components increased; the contribution of flexure displacement in total displacement reduced, the contribution of shear displacement increased, the contribution of anchorage slip displacement changed in the range of 30%- 40%.

Cyclic Lateral Load Test on T-Shaped Reinforced Concrete Columns

2013 ◽  
Vol 718-720 ◽  
pp. 1923-1927
Author(s):  
Fu Lai Qu ◽  
Gui Rong Liu ◽  
Pei Yuan Tian ◽  
Lu Yang Qi
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Axial Load ◽  
Cyclic Load ◽  
Load Ratio ◽  
Concrete Columns ◽  
Load Test ◽  
Axial Load Ratio ◽  
Cyclic Lateral Load ◽  
The Web

Based on the experiment of eight reinforced concrete T-shaped columns under low cyclic load, the factors which affect bearing capacity and seismic behavior, such as limb length, axial load ratio, stirrup ratio and the arrangement of longitudinal bars, etc., are analyzed. Tests results show that the bearing capacity of the columns increases, but the ductility is decreased with an increase of axial load ratio. The bearing capacity of T-shaped column increases when the web gets longer, while its deformability and ductility decrease. Besides, increase of stirrup ratio and longitudinal bars in the end of the web also have effect on the ductility of the columns.

Experimental and Numerical Investigation on Reinforced Concrete Beam-Column Joints

2013 ◽  
Vol 351-352 ◽  
pp. 1450-1453
Author(s):  
Xiao Yong Wu ◽  
Yang Zhou Li
Keyword(s):  
Reinforced Concrete ◽  
Axial Load ◽  
Concrete Beam ◽  
Load Ratio ◽  
Lateral Force ◽  
Reinforced Concrete Beam ◽  
Static Test ◽  
Axial Load Ratio ◽  
Source Program ◽  
The Relationship

The elasto-plastic analysis of reinforced concrete square columns was introduced to study the relationship between lateral force and curvature by using the open source program OpenSees. A pseudo static test on the inverted "T" shape reinforced concrete square column was conducted for the comparative analysis. The results indicated that the lateral force calculated by program agree with experimental data with an axial load ratio of 0.33. The calculated yield lateral force was 29.7 kN, the error was lower than 7% compared with experimental results. In addition, the cross-section curvature were obtained, which were difficult to obtain through the traditional experimental study, the calculated yield curvature was 1.825×10-5. The calculated results with different axial load ratios were presented in this paper, which showed that both the yield lateral force and curvature of reinforced concrete square columns were increased with low axial load ratio, and at the same time it could reduce some experimental work by using computer simulation.

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