The effect of different retrofitting techniques on the axial load carrying capacity of damaged cylindrical shells

Structures ◽  
2021 ◽  
Vol 31 ◽  
pp. 590-601
Author(s):  
Hamed Rahman Shokrgozar ◽  
Vahid Akrami ◽  
Tayebeh Jafari Ma'af ◽  
Naseraldin Shahbazi
Keyword(s):  
Carrying Capacity ◽  
Axial Load ◽  
Cylindrical Shells ◽  
Load Carrying Capacity ◽  
Load Carrying

Load carrying capacity of cylindrical shells

2020 ◽  
Vol 2020 (21) ◽  
pp. 146-153
Author(s):  
Anatolii Dekhtyar ◽  
◽  
Oleksandr Babkov ◽  
Keyword(s):  
Carrying Capacity ◽  
Cylindrical Shells ◽  
Load Carrying Capacity ◽  
Load Carrying

Experiment Study on Influence of Initial Stress in Concrete Filled Steel Tubular Latticed Columns under Axial Load

2014 ◽  
Vol 518 ◽  
pp. 170-177
Author(s):  
Fu Yun Huang ◽  
Guan Yu ◽  
Bao Chun Chen ◽  
Jian Zhong Li
Keyword(s):  
Initial Stress ◽  
Carrying Capacity ◽  
Axial Load ◽  
Ultimate Load ◽  
Load Carrying Capacity ◽  
Experiment Study ◽  
Load Carrying ◽  
Plastic Phase ◽  
Cfst Columns ◽  
Ultimate Load Carrying Capacity

The testing of concrete filled steel tubular (CFST) latticed columns with initial stress had been conducted under axial load. The set-ups subjected to initial stress, the curves of load to deformation as well as the hooping effect were analyzed. The trial results indicate that the CFST columns with initial stress have smaller of combined stiffness and ultimate load-carrying capacity as compared with CFST columns without initial stress. Furthermore, the presence of initial stress will advance the coming of plastic phase, and contemporary, put off the appearances of hooping effect so that it cannot be sufficient exerted, which decrease the ultimate load-carrying capacity at all. Nevertheless, the mechanical behaviour of lacing tubes does not vary with the initial stress and all the lace tubes are stayed in the elastic phase during the testing.

scholarly journals Axial Load-carrying Capacity of Steel Tubed Concrete Short Columns Confined with Advanced FRP Composites

2020 ◽  
Author(s):  
Ali Raza ◽  
Syyed Adnan Raheel Shah ◽  
Mudasser Muneer Khan ◽  
Faraz ul Haq ◽  
Hunain Arshad ◽  
...  
Keyword(s):  
Finite Element ◽  
Compressive Strength ◽  
Finite Element Model ◽  
Carrying Capacity ◽  
Axial Load ◽  
Element Model ◽  
Confined Concrete ◽  
Superior Performance ◽  
Load Carrying Capacity ◽  
Load Carrying

Fiber Reinforced Polymers (FRPs) have wide applications in the field of concrete construction due to their superior performance over conventional materials. This research focuses on the structural behavior of steel tube FRP jacket–confined concrete (STFC) columns under axial concentric loading and proposes a new empirical equation for predicting the axial load-carrying capacity of STFC columns having thickness of FRP-fabric ranging from 0.09 mm to 5.9 mm. A large database of 700 FRP-confined concrete specimens is developed with the detailed information of critical parameters, i.e. elastic modulus of FRPs (Ef), compressive strength of unconfined concrete (fc’o), diameter of specimen (D), height of specimen (H), total thickness of FRPs (N.tf), and the ultimate strength of confined concrete (fc’c). After the preliminary evaluation of constructed database, a new empirical model is proposed for the prediction of axial compressive strength of FRP-confined specimens using general regression analysis by minimizing the error functions such as root mean squared error (RMSE) and coefficient of determination (R2). The proposed FRP-confinement strength model presented higher accuracy as compared with previously proposed models. Finally, an equation is proposed for the predictions of axial load carrying capacity of STFC columns. For the validation of proposed equation, an extensive parametric study is performed using the proposed nonlinear finite element model (FEM). The FEM is calibrated using the load-deflection results of STFC columns from literature. A close agreement was observed between the predictions of proposed finite element model and proposed capacity equation.

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