Analytical prediction of seismic behavior of RC joints and columns under varying axial load

2018 ◽  
Vol 174 ◽  
pp. 792-813 ◽  
Author(s):  
Javad Shayanfar ◽  
Habib Akbarzadeh Bengar ◽  
Azadeh Parvin
Keyword(s):  
Axial Load ◽  
Seismic Behavior ◽  
Analytical Prediction

Numerical Study on Seismic Behavior of Composite Shear Walls with Steel-Encased Profiles Subjected to Different Axial Load

2021 ◽  
Vol 26 (4) ◽  
pp. 04021034
Author(s):  
Amirhoshang Akhaveissy ◽  
Kambiz Daneshvar ◽  
Dina Ghazi-Nader ◽  
Morteza Amooie ◽  
Mohammad Javad Moradi
Keyword(s):  
Axial Load ◽  
Seismic Behavior ◽  
Numerical Study ◽  
Shear Walls ◽  
Composite Shear

Finite Element Analysis of Concrete-Filled Rectangular Tubular Frame

2014 ◽  
Vol 578-579 ◽  
pp. 695-698
Author(s):  
Xi Le Li ◽  
Li Hua Niu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Load ◽  
Seismic Behavior ◽  
Element Model ◽  
Load Level ◽  
Hysteresis Curve ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Nonlinear Finite Element Model

Based on the model experiment on seismic behavior of a 1-span, 2-story concrete-filled rectangular steel tubal (CFRST) frame under lateral cyclic loads, a 3-D nonlinear finite element model of concrete-filled rectangular steel tubular frame is proposed in the paper. Compared with the experimental hysteresis curve, the computational results are found to be accurate, which shows that this model proposed in the paper can be applied in structure analysis of concrete-filled rectangular tubular frames. So the model was used in the finite element analysis of concrete-filled rectangular frame with different axial load level. Compared the computational displacement envelop curves, it concludes that the ductility and bearing capacity of CFRST frames reduces with the increasing axial load level.

Seismic Behavior of Concrete Columns Confined by CFRP and GFRP Jackets

2013 ◽  
Vol 405-408 ◽  
pp. 657-663
Author(s):  
Yu Mei Teng ◽  
Ye Tian ◽  
James Liu
Keyword(s):  
Tensile Strength ◽  
Seismic Performance ◽  
Axial Load ◽  
Seismic Behavior ◽  
Large Scale ◽  
Concrete Columns ◽  
Cyclic Displacement ◽  
Transverse Steel ◽  
The Moment ◽  
Constant Axial Load

This paper presents experimental results of a series of large-scale reinforced concrete circular and square columns tested under lateral cyclic displacement excursions while simultaneously subjected to constant axial load. All the specimens contained only minimal transverse steel and were then retrofitted with CFRP or GFRP jackets except control specimens. The measured hysteretic loops of the moment vs. curvature and shear vs. deflection relationships are reported for each specimen. It was observed that both CFRP and GFRP wrapping could provide effective confinement and significantly improve the seismic performance of columns. The effectiveness of FRP in enhancing column ductility relates more closely to its tensile strength than stiffness, thus the application of GFRP confinement to concrete columns is promoted due to obtainability and economical concern.

Experimental Research on the Seismic Behavior of the SRC Short-Pier Shear Wall with Layered Braces Structures

2011 ◽  
Vol 368-373 ◽  
pp. 2041-2044
Author(s):  
Wen Wu Lan ◽  
Xiu Ning Peng ◽  
Xiao Hua Huang ◽  
Yu Lei
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Seismic Performance ◽  
Axial Load ◽  
Seismic Behavior ◽  
Shear Wall ◽  
Displacement Ductility ◽  
Steel Reinforced Concrete ◽  
New Type ◽  
Reversed Cyclic

A new type of construction employing shaped steels as boundary elements and layered braces of RC(Reinforced Concrete) short-pier shear wall is put forward. The braces are in X shape and are erected in a multi-storied form. They are embedded in the boundary zone and the web of SRC (Steel Reinforced Concrete) short-pier shear wall respectively to make it possible to improve the bearing capacity and ductility of this shear wall and to improve its seismic performance. Three half-scale specimens of the SRC short-pier shear wall are tested under reversed cyclic loading. High design axial load radio of 0.5 is used. The failure processes and modes of the specimens are observed. The law about bearing capacity and displacement ductility of the specimens influenced by the layered braces structures is revealed. The experimental results show that the displacement ductility is closely related to the amount of stories of braces. The specimens with layered braces structures have better ductility and larger bearing capacity, and therefore the layered braces structures effectively improve the seismic performance of the SRC short-pier shear wall.

Seismic behavior of preloaded rectangular RC columns strengthened with precambered steel plates under high axial load ratios

2017 ◽  
Vol 152 ◽  
pp. 683-697 ◽  
Author(s):  
L. Wang ◽  
R.K.L. Su ◽  
B. Cheng ◽  
L.Z. Li ◽  
L. Wan ◽  
...  
Keyword(s):  
Axial Load ◽  
Seismic Behavior ◽  
Steel Plates ◽  
Rc Columns

Study on the Factors Affecting the Anti-Seismic Performance of Steel Reinforced High-Strengh Concrete Columns

2012 ◽  
Vol 535-537 ◽  
pp. 1842-1846
Author(s):  
Bao Sheng Yang ◽  
Shi Hua Song
Keyword(s):  
Seismic Performance ◽  
High Strength Concrete ◽  
Axial Load ◽  
Seismic Behavior ◽  
Influencing Factor ◽  
High Strength ◽  
Concrete Columns ◽  
Factors Affecting ◽  
Strength Concrete ◽  
High Strength Concrete Columns

Through experimental study of six steel reinforced high strength concrete columns under low cyclic horizontal loads, the influence on anti-seismic behavior of the columns under different axial load coefficient, stirrup ratio and steel reinforced form is analyzed.The study found in addition to the fact that the anti-seismic performance of high strength concrete columns is sensitive to axial load coefficient, steel reinforced form is also an important influencing factor. For high strength concrete columns with different steel reinforced forms, appropriate adjustment of its axial load coefficient may be carried out, however the influence of stirrup ratio is very little on anti-seismic performance of columns.

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