scholarly journals Mechanical behaviour of PVC-CFRP confined concrete column with RC beam joint subjected to axial load

2020 ◽  
Vol 72 (2) ◽  
pp. 151-164
Author(s):  
Stjepan Lakusic
Keyword(s):  
Mechanical Behaviour ◽  
Axial Load ◽  
Confined Concrete ◽  
Concrete Column ◽  
Rc Beam

Seismic Behavior of RC Beam to Partially Steel Tubed Concrete (PSTC) Column Joints Under High Axial Load and Cyclic Loading

2016 ◽  
Vol 16 (01) ◽  
pp. 1640015 ◽  
Author(s):  
Yun Tian Wu ◽  
Yu Shan Fu ◽  
Chong-Ming Dai
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Axial Load ◽  
Deformation Energy ◽  
Rc Beam ◽  
Weak Beam ◽  
Column Joint ◽  
Energy Dissipation Capacity ◽  
Beam Mechanism ◽  
Strength And Stiffness

A new type of partially steel tubed concrete (PSTC) column is proposed that is suitable to be used in new high rise reinforced concrete (RC) buildings. Three exterior joint specimens consisting of RC beams and PSTC columns and two exterior RC joint specimens were designed and tested under high axial load and cyclic loading to investigate the joint behavior in terms of failure pattern, hysteresis response, deformation, energy dissipation capacity and degradation of strength and stiffness. Test results indicate that the PSTC column can benefit the performance of the joint in terms of strength, ductility and energy dissipation capacity and can partly compensate for the unfavorable effect induced by slab. The strong column–weak beam mechanism can also be ensured in RC beam to PSTC column joint.

Parametric Analysis of the Models of Confinement of the Concrete Column

2012 ◽  
Vol 498 ◽  
pp. 1-14 ◽  
Author(s):  
Kamal Ait Tahar ◽  
F. Taouche ◽  
Y. Bouamra
Keyword(s):  
Experimental Data ◽  
Ultimate Strength ◽  
Parametric Analysis ◽  
Ultimate Strain ◽  
Confined Concrete ◽  
Concrete Column ◽  
Strength Ratio ◽  
Concrete Properties ◽  
Concrete Confinement

Existing models for the concrete confined show a great respect in terms of effectiveness of confinement. The concrete confinement which consists in preventing these strains can be carried out either by an external envelope, or by a weak spacing between the stirrups. All models consist of some modification factors multiplying the unconfined concrete properties; these modification factors depend on the strength ratio and the confinement level. The relation of the ultimate strength ‘and ultimate strain in many existing models is complexity by representing. Each author gauges his model according to the experimental data. In this study, we present the results of a parametric analysis of some the most used models of confinement. The results show that the models of confinement have an important disparity between the values of the strength (fCC) and axial ultimate strain (εcc) of confined concrete.

scholarly journals Effectiveness of Hybrid and Partially Confined Concrete Subjected to Axial Compressive Loading Using CFRP and GFRP Composite Materials

2020 ◽  
Vol 28 (4) ◽  
pp. 8-14
Author(s):  
Youcef Ghernouti ◽  
Bahia Rabehi
Keyword(s):  
Composite Materials ◽  
Axial Load ◽  
Compressive Loading ◽  
Central Zone ◽  
Confined Concrete ◽  
Compression Behavior ◽  
Gfrp Composite ◽  
Strength And Deformation ◽  
Partial Confinement ◽  
Hybrid Reinforcement

AbstractThis paper presents the results of an experimental study that investigates the compression behavior of concrete and evaluates the effect of hybrid reinforcement by multiple geometries, and total and partial confinement, using CFRP and GFRP composite materials.A total of nine (09) variants of concrete cylindrical specimens, including one (01) variant of unconfined concrete and eight (08) variants of confined concrete with different geometries were subjected to axial load compression.The objectives of this study were to verify the applicability and effectiveness of partial and total confinement to improve the behavior of concrete, evaluate the effect of the hybrid confinement used, and obtain a typical reinforced model.The results obtained clearly show the effectiveness of the hybrid confinement and partially confined concrete in improving the compressive strength and deformation of the concrete, so it is possible to replace CFRP total confinement by partially confined concrete with two CFRP layers or by a hybrid confinement with a CFRP layer in the central zone and GFRP layers on the top and bottom of the specimen.

Sign in / Sign up

Export Citation Format

Share Document