Ultimate bearing capacity of skirted foundation on cohesionless soil using slip line theory

2020 ◽  
Vol 123 ◽  
pp. 103573
Author(s):  
G. Santhoshkumar ◽  
Priyanka Ghosh
Keyword(s):  
Bearing Capacity ◽  
Slip Line ◽  
Ultimate Bearing Capacity ◽  
Cohesionless Soil ◽  
Line Theory

Brief Analysis on the Mechanical Behavior Influenced by Opening Locations of the Unbonded Prestressed Concrete Slabs

2011 ◽  
Vol 243-249 ◽  
pp. 774-778
Author(s):  
Ling Zhi Jin ◽  
Hong Mei Zhou ◽  
Qiang Fu ◽  
Xiao Jie Zhou ◽  
Yu Lin Xie
Keyword(s):  
Mechanical Behavior ◽  
Bearing Capacity ◽  
Prestressed Concrete ◽  
Concrete Slab ◽  
Ultimate Bearing Capacity ◽  
Hole Drilling ◽  
Concrete Slabs ◽  
Uniform Load ◽  
Yield Line Theory ◽  
Line Theory

The unbonded prestressed concrete slabs is usually used in big span high-rise buildings. Due to the existence of stairs, elevators, piping shafts and washroom etc，（hole drilling is usually encountered in the floor of unbonded prestressed concrete structures）, which weakens the rigidity of concrete slab, and it has different influences on the slabs with openings in different locations. Based on the contrast experiments of the unbonded prestressed concrete slab with openings in different locations subjected to uniform load, this thesis investigates and analyzes mechanical behavior of the unbonded prestressed concrete slabs with openings in different locations (central，around edge and corner) subjected to uniform load. Using the yield-line theory to calculate the ultimate bearing capacity of pre-stressed slabs with openings, and comparing from experimental results to theoretical ones, this paper puts forward some conclusions of how different opening locations impact the ultimate bearing capacity of pre-stressed slabs with openings

scholarly journals Prediction of Ultimate Bearing Capacity of Shallow Foundations on Cohesionless Soils: A Gaussian Process Regression Approach

2021 ◽  
Vol 11 (21) ◽  
pp. 10317
Author(s):  
Mahmood Ahmad ◽  
Feezan Ahmad ◽  
Piotr Wróblewski ◽  
Ramez A. Al-Mansob ◽  
Piotr Olczak ◽  
...  
Keyword(s):  
Gaussian Process ◽  
Bearing Capacity ◽  
Gaussian Process Regression ◽  
Ultimate Bearing Capacity ◽  
Shallow Foundations ◽  
Cohesionless Soil ◽  
Unit Weight ◽  
Cohesionless Soils ◽  
Computing Technique ◽  
Theoretical Approaches

This study examines the potential of the soft computing technique—namely, Gaussian process regression (GPR), to predict the ultimate bearing capacity (UBC) of cohesionless soils beneath shallow foundations. The inputs of the model are width of footing (B), depth of footing (D), footing geometry (L/B), unit weight of sand (γ), and internal friction angle (ϕ). The results of the present model were compared with those obtained by two theoretical approaches reported in the literature. The statistical evaluation of results shows that the presently applied paradigm is better than the theoretical approaches and is competing well for the prediction of UBC (qu). This study shows that the developed GPR is a robust model for the qu prediction of shallow foundations on cohesionless soil. Sensitivity analysis was also carried out to determine the effect of each input parameter.

The Research on the Ultimate Bearing Capacity of Soil around the Push-Extend Multi-under-Reamed Pile at Sliding Failure State

2014 ◽  
Vol 578-579 ◽  
pp. 232-235 ◽  
Author(s):  
Yong Mei Qian ◽  
Da Peng Zhao ◽  
Xue Wen Xie
Keyword(s):  
Bearing Capacity ◽  
Failure Mechanism ◽  
Ultimate Bearing Capacity ◽  
Single Pile ◽  
Calculation Formula ◽  
Failure State ◽  
Line Theory

In the paper, the existing unreasonable place of the calculation formula of the bearing capacity of single pile is put forward. Through analyzing the failure mechanism of the soil up and under the Multi-under-reamed, the method for calculating the ultimate bearing capacity of soil around the PEMUR pile can be determined by using the slide-line theory, and the calculation formula of the bearing capacity of single pile of the PEMUR pile is further revised and perfected.

Discussion on Application of Empirical Formulas for Ultimate Bearing Capacity

2014 ◽  
Vol 919-921 ◽  
pp. 660-665
Author(s):  
Hui Wu Jin ◽  
Hong Wei Song
Keyword(s):  
Bearing Capacity ◽  
Empirical Formula ◽  
Slip Line ◽  
Plastic Material ◽  
Ultimate Bearing Capacity ◽  
Empirical Formulas ◽  
Line Method ◽  
Allowable Error ◽  
Scope Of Application ◽  
Elastic Plastic Material

Terzaghi equation is widely used in practice to determine Ultimate Bearing Capacity (UBC). Recent research indicates that exact solution of UBC could be got with the slip line method if the soil is ideal elastic-plastic material. In this paper, dimensionless UBC is gained using ABC software based on the slip line method and is compared with that by Terzagh equation with based on empirical formula. It shows that error of UBC is caused by empirical formula. However, the accuracy of UBC relates to safety and economy of the engineering. Given empirical formulas have a wide application in practice, the scope of application of the four classic empirical formulas is discussed in different range of allowable error. The applicable scope of the four classic empirical formulas within the margin of error is discussed and the results can facilitate the application of classic empirical formulas in practice.

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