scholarly journals Numerical studies on soil-skirt roughness and sand plug impact in bearing capacity prediction of caisson foundations subjected to the uniaxial loads

2018 ◽  
Vol 10 (5) ◽  
pp. 053308 ◽  
Author(s):  
Vali Ghaseminejad ◽  
Amin Barari ◽  
Mohammad Ali Rowshanzamir
Keyword(s):  
Bearing Capacity ◽  
Numerical Studies ◽  
Caisson Foundations ◽  
Sand Plug ◽  
Capacity Prediction

Axial Pile Capacity Prediction Obtained from Environmental Friendly Jack-In Piling Test on Clayey Soil

2016 ◽  
Vol 845 ◽  
pp. 70-75
Author(s):  
Yusep Muslih Purwana ◽  
Niken Silmi Surjandari ◽  
Haryanto Wahyu
Keyword(s):  
Quality Control ◽  
Bearing Capacity ◽  
Axial Load ◽  
Clayey Soil ◽  
Soil Layer ◽  
Low Noise ◽  
Pile Capacity ◽  
Environmental Friendly ◽  
Minimum Disturbance ◽  
Capacity Prediction

Jack-in piling is environmental friendly system enabling placement of the pile into soil layer with minimum disturbance. It works with very low noise, low vibration, allows piling in confined area, relatively very fast in term of installation rate, better quality control and very fast in mobility. The main issue regarding the pile is bearing capacity; the ability of the pile to withstand axial load without failure. This study attempts to find the correlation between jack-in force and ultimate pile bearing capacity. The result of 5 piling record on clayey layer soil indicates that there is a good correlation between jack-in force and empirical ultimate pile bearing capacity.

scholarly journals The Bearing Capacity Calculation Method of Cracked Reinforced Concrete Column at High Temperature

2017 ◽  
Vol 11 (1) ◽  
pp. 887-895
Author(s):  
Yuzhuo Wang ◽  
Jian Song ◽  
Cancan Wang ◽  
Chuanguo Fu
Keyword(s):  
Reinforced Concrete ◽  
High Temperature ◽  
Bearing Capacity ◽  
Element Model ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Numerical Studies ◽  
Different Types ◽  
Capacity Calculation ◽  
Parametric Studies

Introduction: This paper presents results from a set of numerical studies on the cracked reinforced concrete column at high temperature. Methods: The macroscopic finite element model used in the accounts analysis for high temperature properties of constitutive materials. The validity of the model is established by comparing the predictions from numerical analysis with the data measured in the fire test. Result and Conclusion: Data from the test indicated that the temperature of rebar in column with cracks is 57% ~ 130% higher than that without cracks under the same condition, and different types of crack had significant influence on the bearing capacity of column. These results from parametric studies were utilized to propose ultimate bearing capacity of cracked reinforced concrete column.

Improving the Methodology for Calculating the Bearing Capacity of Eccentrically Compressed Reinforced Concrete Elements Based on the Use of the Refined Curvilinear Deformation Diagrams of Concrete and Reinforcement

2019 ◽  
Vol 974 ◽  
pp. 570-576
Author(s):  
Alexander I. Nikulin ◽  
Al-Khawaf Ali Fadhil Qasim
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Linear Equations ◽  
Resistance Force ◽  
Deformation Model ◽  
Concrete Element ◽  
Element Determination ◽  
Numerical Studies ◽  
Concrete Elements ◽  
Deformation Diagrams

The article proposes a new approach to improving the methodology for calculating the bearing capacity of the eccentrically compressed reinforced concrete elements for cases of their loading with large eccentricities. The basis of this technique is considered as a modified version of the deformation model for the reinforced concrete resistance force. The main feature of this model is the energy approach to transforming the reference diagrams of compression and concrete tension into the diagrams of non-uniform deformation, corresponding to the stress-strain state of the compressed and stretched zones of concrete in the cross section of the eccentrically compressed reinforced concrete structures. This way there is no falling branch in the concrete diagrams obtained by this method. A calculation diagram of the steel reinforcement deformation with a physical yield point was taken as a partial function, consisting of one linear and two non-linear equations. The proposed method also shows the possibility of taking into account the greatest curvature of an eccentrically compressed reinforced concrete element in the plane of its loading. The article presents all the necessary dependencies allowing the theoretical value of the carrying capacity of an eccentrically compressed reinforced concrete element determination. The results of the numerical studies performed using the design software developed by the authors for the personal computer are given.

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