Seismic behavior of full-scale steel reinforced recycled concrete columns under high axial compression ratio

Structures ◽  
2021 ◽  
Vol 29 ◽  
pp. 1882-1897
Author(s):  
Hongying Dong ◽  
Yanna Li ◽  
Wanlin Cao ◽  
Yanli Guo
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Concrete Columns ◽  
Full Scale ◽  
Recycled Concrete ◽  
Axial Compression Ratio

Study on the Behaviors of Steel Reinforced Concrete Cloumns

2011 ◽  
Vol 368-373 ◽  
pp. 248-252
Author(s):  
Bao Sheng Yang ◽  
Yun Yun Li
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
High Strength Concrete ◽  
Seismic Behavior ◽  
Slenderness Ratio ◽  
High Strength ◽  
Concrete Columns ◽  
Axial Compression Ratio ◽  
High Strength Concrete Columns

The influence on columns behaviors of slenderness ratio are analyzed, and the influence on columns’ anti-seismic behavior of axial compression ratio, stirrup ratio and steel form are analyzed through the test on bearing capacity and level load of low cycle reverse of steel reinforced high-strength concrete columns. The bearing capacity of the long columns reduces along with the slenderness ratio increasing and augments along with concrete strength increasing. Probability of suddenly destruct increases along with the column slenderness ratio augmenting through the test. In addition, anti-seismic behavior of columns are effected not only axial compression ratio, but also steel form. Axial compression coefficien of the steel reinforced high-strength concrete columns with different steel form may be adjusted, however, the influence of stirrup ratio is very little on anti-seismic behavior of columns.

Effect of Axial Compression Ratio on Seismic Behavior of GFRP Reinforced Concrete Columns

2020 ◽  
Vol 20 (06) ◽  
pp. 2040004
Author(s):  
Li Sun ◽  
Zeyu Yang ◽  
Qiao Jin ◽  
Weidong Yan
Keyword(s):  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Axial Compression ◽  
Seismic Design ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Axial Compression Ratio ◽  
Energy Dissipation Capacity

Traditional reinforced concrete columns have demonstrated poor seismic performance especially in corrosive environment as the reinforcement bars experience severe corrosion under such conditions. To overcome the problem of steel corrosion, glass fiber-reinforced polymer (GFRP) reinforced concrete columns have gained significant attention in recent years. However, the seismic performance of GFRP reinforced concrete column is not well understood yet. One of the main challenges associated with the use of GFRP bars is its brittle behavior. Therefore, it is necessary to investigate the mechanical properties and failure modes of GFRP reinforced concrete structures under seismic action. In this research, the seismic behavior of GFRP reinforced concrete columns and conventional columns under different axial compression ratios are analyzed by low-cycle repeated pseudo-static loading tests. As a result, the deformation and the seismic energy dissipation capacity of GFRP reinforced concrete columns are investigated and discussed. Furthermore, the failure mechanism of GFRP bar structure is studied to provide the basis for improving the seismic design method of GFRP reinforced concrete structure and modifying the code for seismic design. In addition, the influence of axial compression ratio on the seismic behavior of full GFRP reinforced concrete columns is investigated. The results of this experiment demonstrate that with the increase of axial compression ratio, the ultimate bearing capacity of GFRP reinforced concrete columns increases, while the deformation and the cumulative energy dissipation capacity decrease.

scholarly journals Seismic Behavior of Short Concrete Columns with Prestressing Steel Wires

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Deng Zong-Cai ◽  
Jumbe R. Daud ◽  
Li Hui
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Steel Wire ◽  
Concrete Columns ◽  
Absorption Capacity ◽  
Shear Capacity ◽  
Prestressing Steel ◽  
Axial Compression Ratio ◽  
Short Columns

The seismic behavior of short circular reinforced concrete columns was studied by testing seven columns retrofitted with prestressing steel wire (PSW), subjected to combined constant axial compression and lateral cyclic load. The main test parameters were configuration index of PSW, prestressing level of PSW, and axial compression ratio. An analysis and discussion of the test results including failure mode, hysteresis curves, skeleton curves, ductility, and degradation of stiffness was done. The results show that the seismic performance of the retrofitted specimens could be effectively enhanced even if the axial compression ratio of columns reached 0.81. The ductility index and the energy absorption capacity of the retrofitted specimens increase with the prestressing level of PSW. The formulas for calculating shear capacity of RC short columns strengthened with PSW were proposed which may be useful for future engineering designs and researches.

Experimental Study on Seismic Behavior of Recycled Concrete Grill Walls with Axial Compression Ratio

2011 ◽  
Vol 71-78 ◽  
pp. 995-998 ◽  
Author(s):  
Jing Hai Zhou ◽  
Chao Bi Zhang ◽  
Xian Hong Meng
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Test Sample ◽  
Recycled Concrete ◽  
Wall Material ◽  
Concrete Aggregate ◽  
Static Test ◽  
Axial Compression Ratio ◽  
Good Energy

Through the seismic behavior of 4 pieces of concrete grill wall by pseudo- static test, the test sample destruction shape, the skeleton curves under to the different wall material and the different axial compression ratio, consuming energy ability, the ductility coefficient were conducted the contrast research. The experiment indicates the test sample under the level reciprocation load and the axial action of force, destruction shape main perform for cutting destruction; After wall dehiscence, the rigidity rate of descent is quick, after achieving the ultimate load, the rigidity drop flatten out, the wall has the good ductility. By enhancing the axial compression ratio, it may enhance the wall the ductility, to consume energy the coefficient; the walls contained recycled concrete aggregate has good energy dissipation and seismic performance;

Nonlinear Analysis of I-Shaped Short Pier Shear Wall with Concealed Bracings

2012 ◽  
Vol 472-475 ◽  
pp. 757-760
Author(s):  
Ya E Li ◽  
Yu Hong Tang ◽  
Zhi Hua Li ◽  
Zhi Hai Hao
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Shear Wall ◽  
Wall Model ◽  
Skeleton Curve ◽  
Finite Element Software ◽  
Axial Compression Ratio ◽  
Concealed Bracings ◽  
Seismic System

In this paper, research on I-shaped short pier shear wall model which is the relatively weak seismic system components is presented. According to the results of Finite element software ABAQUS simulation, the influence of the bearing capacity, ductility and skeleton curve behavior on the I-shaped short pier shear wall with concealed bracings is mainly studied under different axial compression ratio and different reinforcement proportion of the concealed bracings. The results indicate that the I-shaped short pier shear wall with concealed bracings has a higher carrying capacity, and the ductility has also been enhanced. And the factor that axial compression ratio, reinforcement proportion of the concealed bracings significantly affect the seismic behavior of the I-shaped short pier shear wall with concealed bracings

Experimental Study on Seismic Performance of Steel Reinforced Recycled Concrete Column

2014 ◽  
Vol 501-504 ◽  
pp. 1580-1586
Author(s):  
Jian Yang Xue ◽  
Jian Peng Lin ◽  
Hui Ma
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
Recycled Concrete ◽  
Recycled Aggregate ◽  
Concrete Column ◽  
Axial Compression Ratio ◽  
Energy Dissipation Capacity

The pseudo-static tests were carried out on seven steel reinforced recycled concrete columns. The main parameters of specimens were recycled aggregate replacement ratio, axial compression ratio and volumetric stirrup ratio. The results indicate that the incorporation of recycled aggregate doesnt reduce the horizontal bearing capacity, ductility and the energy dissipation capacity of specimens and has little effect on seismic performance. The seismic performance of steel reinforced recycled concrete column decreases significantly in the high axial compression ratio. The ductility, horizontal bearing capacity and the energy dissipation capacity of the steel reinforced recycled concrete column increase with a rise in the volumetric stirrup ratio. This study provides a reference on the application of the steel reinforced recycled concrete column.

Influence of Axial Compression Ratio on Seismic Behavior of Reactive Powder Concrete (RPC) Beam-Column Joints

2014 ◽  
Vol 597 ◽  
pp. 312-315 ◽  
Author(s):  
Yan Zhong Ju ◽  
Chun Yu Li ◽  
De Hong Wang
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Ultimate Bearing Capacity ◽  
Reactive Powder Concrete ◽  
Element Analysis ◽  
Axial Compression Ratio ◽  
Reactive Powder ◽  
Axial Compressive Ratio

To explore the influence of axial compressive ratio on seismic behavior of reactive powder concrete(RPC) beam-column joints,this paper carry out RPC beam-column joints nonlinear finite element analysis,using software ABAQUS.The effect of different axial compression ratio on the ductility,energy dissipation capacity and bearing capacity are studied,based on hysteretic curves and skeleton curves of the components.The results show that,with the increase of axial compression ratio,skeleton curves of the components tend to be steep when the vertical load of beam ends exceed the peak point.The ultimate bearing capacity of the components are improved with the increasing of axial compression ratio which is less then 0.6,while the ultimate bearing capacity show a opposite trend when the axial compressive ratio exceed 0.6.

Study on Beam-End Carrying Capacity of Waste Fiber Recycled Concrete Beam-Column Joints

2014 ◽  
Vol 513-517 ◽  
pp. 16-19 ◽  
Author(s):  
Jing Hai Zhou ◽  
Shu Jun Bai ◽  
Chen Bian
Keyword(s):  
Axial Compression ◽  
Experimental Research ◽  
Compression Ratio ◽  
Carrying Capacity ◽  
Fiber Length ◽  
Concrete Beam ◽  
Recycled Concrete ◽  
Recycled Aggregates ◽  
Axial Compression Ratio ◽  
Loading Type

Considering the actual factors such as axial compression ratio, constraint conditions and so on, We design 10 beam-column joints of different parameters under the condition of the same reinforcement ratio and use the monotonic loading type to study the influences of dosage of recycled aggregates and waste fibers, waste fiber length on beam-ends load-displacement relationships of beam-column nodes. Experimental research shows that when the dosage of recycled aggregates is 50% , waste fiber content is 0.12%, waste fiber length is 19 mm, beam-end bearing behaviour of node area is best.

Axial Compression Ratio Limit of Regional Confined Concrete Columns

2013 ◽  
Vol 438-439 ◽  
pp. 501-504
Author(s):  
Jun Yan Lu ◽  
Wei Wang Pang ◽  
Shuai Chang
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Simulation Experiment ◽  
Concrete Columns ◽  
Hysteretic Behavior ◽  
Confined Concrete ◽  
Earthquake Simulation ◽  
Related Factors ◽  
Axial Compression Ratio ◽  
Ratio Limit

Through earthquake simulation experiment of nine regional confined concrete columns with different axial compression ratio, the bearing capacity and seismic behavior of regional confined concrete columns were studied in this paper. Considering the ductility, stiffness, energy-dissipation performance and related factors of regional confined concrete columns under different axial compression ratio, by comparative analysis of the hysteretic behavior of the specimens, the limit of axial compression ratio of regional confined concrete columns is proposed for seismic design.

scholarly journals Seismic behavior of textile-reinforced concrete–strengthened RC columns under different axial compression ratios

2019 ◽  
Vol 14 ◽  
pp. 155892501986570
Author(s):  
Liu Ming ◽  
Yin Shi-Ping ◽  
Cong Xi
Keyword(s):  
Reinforced Concrete ◽  
Axial Compression ◽  
Compression Ratio ◽  
Seismic Behavior ◽  
Peak Load ◽  
Textile Reinforced Concrete ◽  
Element Analysis ◽  
Rc Columns ◽  
Rc Column ◽  
Axial Compression Ratio

To study the effect of various axial compression ratios on the seismic behavior of reinforced concrete (RC) columns strengthened with textile-reinforced concrete, in this study, an RC column model is established using the finite element analysis software, ABAQUS. This model’s seismic performance under earthquakes is investigated, and the numerical analysis results of the two test pieces are compared with the test results to verify the correctness of the model. The results show that the initial stage of RC loading is under the three-way restraint of the axial force and textile-reinforced concrete material. The yield load and peak load of the textile-reinforced concrete–strengthened RC column increase with the increase in the axial compression ratio. However, the increase in the axial pressure during the loading process accelerates the crack development. The displacement ductility coefficient and the energy dissipation capacity of the specimen are reduced as the axial compression ratio increases. The numerical calculation results of the textile-reinforced concrete–strengthened RC column are in good agreement with the experimental results, indicating that the numerical model based on ABAQUS is reasonable.

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