Bearing Capacity Design of Ram-Compacted Bearing Base Piling Foundations by Simple Numerical Cavity Expansion Approach

2022 ◽  
Vol 22 (2) ◽  
Author(s):  
Zhaodong Du ◽  
Si Xu
Keyword(s):  
Bearing Capacity ◽  
Cavity Expansion ◽  
Capacity Design

scholarly journals Bearing capacity and settlement of circular shallow foundations using a nonlinear constitutive relationship

2014 ◽  
Vol 51 (9) ◽  
pp. 995-1003 ◽  
Author(s):  
B.T. McMahon ◽  
S.K. Haigh ◽  
M.D. Bolton
Keyword(s):  
Bearing Capacity ◽  
Energy Method ◽  
Upper Bound ◽  
Yield Criterion ◽  
Shallow Foundations ◽  
Constitutive Relationship ◽  
Cavity Expansion ◽  
Nonlinear Behaviour ◽  
Ellipsoidal Cavity ◽  
Expansion Mechanism

The design of shallow foundations is dominated by issues of settlement rather than bearing capacity per se. The ability to predict the settlement of foundations at a given factor of safety is hence of key importance in design. In this paper, the energy method for a linear-elastic, perfectly plastic method utilizing the von Mises’ yield criterion with associated flow developed and reported by McMahon et al. in 2013 is extended to consider the nonlinear behaviour of soil. The energy method is used to investigate the load–settlement behaviour of shallow foundations by utilizing an ellipsoidal cavity-expansion mechanism and deformation fields within the boundaries of the classical Hill and Prandtl mechanisms. An elastic mechanism obtained from an analysis in ABAQUS was also investigated using this energy method. The upper-bound approach demonstrates that the cavity-expansion mechanism produces a better solution at small values of settlement, whereas at greater settlements the Prandtl mechanism is shown to produce a more optimal upper-bound solution.

scholarly journals Analytical Model for the End-Bearing Capacity of Tapered Piles Using Cavity Expansion Theory

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Suman Manandhar ◽  
Noriyuki Yasufuku
Keyword(s):  
Bearing Capacity ◽  
Cavity Expansion ◽  
Test Results ◽  
End Bearing Capacity ◽  
Proposed Model ◽  
Expansion Theory ◽  
Cavity Expansion Theory ◽  
Bearing Behavior ◽  
Spherical Cavity Expansion ◽  
Real Type

On the basis of evidence from model tests on increasing the end-bearing behavior of tapered piles at the load-settlement curve, this paper proposes an analytical spherical cavity expansion theory to evaluate the end-bearing capacity. The angle of tapering is inserted in the proposed model to evaluate the end-bearing capacity. The test results of the proposed model in different types of sands and different relative densities show good effects compared to conventional straight piles. The end-bearing capacity increases with increases in the tapering angle. The paper then propounds a model for prototypes and real-type pile tests which predicts and validates to evaluate the end-bearing capacity.

scholarly journals Nominal stress based equal fatigue bearing capacity design of HSLA steel V-shaped butt-welded joints

2018 ◽  
Vol 221 ◽  
pp. 01009
Author(s):  
Wen Xue ◽  
Ping Wang ◽  
Zhibo Dong ◽  
Hongyuan Fang
Keyword(s):  
Bearing Capacity ◽  
Welded Joints ◽  
Design Method ◽  
Hsla Steel ◽  
Estimation Method ◽  
High Strength ◽  
Nominal Stress ◽  
Fatigue Load ◽  
Capacity Design ◽  
Fatigue Life Estimation

Based on nominal stress, this paper proposed a fatigue life estimation method of V-shaped butt welded joints. Then, the fatigue bearing capacity of the base metal under the same fatigue load was used as design goal of the V-shaped butt welded joints and an equal fatigue bearing capacity (EFBC) design method for V-shaped butt welds was thus formed. High strength low alloy steel Q690 was chosen as the experimental material to carry out the equal fatigue bearing capacity design.

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