Subgrade Limit Bearing Capacity Calculation Using Slip Line Method

2014 ◽  
Vol 580-583 ◽  
pp. 3003-3006
Author(s):  
Qian Qian Sun ◽  
Tai Quan Zhou ◽  
Xiao Jie Gu
Keyword(s):  
Bearing Capacity ◽  
Slip Line ◽  
Friction Angle ◽  
Theoretical Formula ◽  
Range Limit ◽  
Foundation Soil ◽  
Line Method ◽  
Capacity Calculation

Limit bearing capacity of foundation soil was studied in the paper using slip line method. Slip line results are found to be consistent with the results calculated by Terzaghi theoretical formula and Hansen theoretical formula. Then the influence of factors such as cohesion and friction angle is studied under complete smooth or complete tough conditions. The results show that in a certain range, limit bearing capacity of foundation increases with the increase of C0, Φ. Limit bearing capacity of foundation under complete smooth condition is lower than the complete tough one.

Normally Consolidated Subgrade Limit Bearing Capacity Calculation Using Slip Line Method

2014 ◽  
Vol 580-583 ◽  
pp. 3183-3186
Author(s):  
Ming Chen ◽  
Tai Quan Zhou
Keyword(s):  
Growth Rate ◽  
Bearing Capacity ◽  
Slip Line ◽  
Friction Angle ◽  
Theoretical Formula ◽  
Foundation Soil ◽  
Line Method ◽  
Capacity Calculation

Normally consolidated subgrade limit bearing capacity of foundation soil was studied in the paper using slip line method. Slip line results are found to be consistent with the results calculated by Terzaghi theoretical formula and Hansen theoretical formula. Then the influence of cohesion, friction angle for normally consolidated subgrade is studied under complete smooth or complete tough conditions. The results show that the normally consolidated subgrade limit bearing capacity increases linearly with the increase of k, γ, while it increases nonlinear with the increase of Φ and the increasing growth rate improves with increasing value of Φ.

The Bearing Capacity Analyses of Soil beneath the Blade of Circular Cassion

2011 ◽  
Vol 250-253 ◽  
pp. 1794-1797 ◽  
Author(s):  
Fu You Yan ◽  
Yuan Cheng Guo ◽  
Shang Qian Liu
Keyword(s):  
Internal Friction ◽  
Bearing Capacity ◽  
Slip Line ◽  
Friction Angle ◽  
Internal Friction Angle ◽  
Embedment Depth ◽  
Taper Angle ◽  
Line Method

Based on the assumption of pointed blade of circular cassion, the formulas of the bearing capacity of soil beneath the blade are presented by the slip line method. The values of Nγ are not too sensitive to change for the soil’s internal friction angle, and are significantly greater than those obtained by Terzaghi’s and Berezantsev’s formulas. They decrease with an increase in the value of blade embedment depth and the taper angle.

Error Analysis of Superposition Method in Bearing Capacity Calculation

2012 ◽  
Vol 166-169 ◽  
pp. 3044-3047
Author(s):  
Le Yi Chen
Keyword(s):  
Error Analysis ◽  
Bearing Capacity ◽  
Failure Mechanism ◽  
Slip Line ◽  
Superposition Method ◽  
Variation Trend ◽  
Line Method ◽  
Capacity Calculation

Duo to non-linearity of ground material’s behavior, the error will be introduced using traditional superposition method to calculate bearing capacity. The main cause of superposition error is that bearing capacity factors based on failure mechanism of weightless soil is not applicable for weight soil. Based on slip line method, variation trend of error introduced by superposition method is investigated. The investigation of this paper showed that, bearing capacity calculated by traditional superposition method is conservative, and the error increased with increasing of internal fractional angle.

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.

Discussion on the Bearing Capacity Determination Methods of Shallow Foundation in Shanghai Region

2013 ◽  
Vol 339 ◽  
pp. 623-627
Author(s):  
De Fang Chen
Keyword(s):  
Bearing Capacity ◽  
Mechanical Tests ◽  
Shallow Foundation ◽  
Test Results ◽  
Foundation Soil ◽  
Capacity Calculation ◽  
Determination Methods ◽  
Preliminary Study ◽  
Inversion Analysis

Representative engineering geological data of Shanghai were collected in this article for analyzes differences between shallow land basic bearing capacity of soil between test values and situ test values. Microstructure of soil geographical is analysis by conventional physical and mechanical tests laboratory. Collect on-site load plate test results of Shanghai shallow foundation soil, and take inversion analysis of the carrying capacity and regression analysis to calculate the bearing capacity of foundation soil test values and in situ values rationality, do a preliminary study on the current bearing capacity calculation and selection.

Solution of the bearing capacity problem by the slip line method

2005 ◽  
Vol 42 (4) ◽  
pp. 1232-1241 ◽  
Author(s):  
Y M Cheng ◽  
S K Au
Keyword(s):  
Finite Difference ◽  
Bearing Capacity ◽  
Slip Line ◽  
Capacity Factor ◽  
Sloping Ground ◽  
Horizontal Acceleration ◽  
Line Method ◽  
Finite Difference Solution ◽  
Bearing Capacity Factor ◽  
Testing Design

The authors have derived the bearing capacity factor Nq on sloping ground based on the slip line method and have verified it using finite difference analysis. The bearing capacity factor Nγ on sloping ground is obtained by an iterative finite difference solution of the slip line equations, and the results are close to those from laboratory testing. Design figures for Nγ on sloping ground are prepared for rapid engineering use. For earthquake loading, the authors have applied the concept of equivalent horizontal acceleration and have derived Nq and Nγ based on slip line analysis.Key words: bearing capacity, slip line, finite difference, sloping ground, earthquake.

scholarly journals Probabilistic Bearing Capacity of a Pavement Resting on Fibre Reinforced Embankment Considering Soil Spatial Variability

2021 ◽  
Vol 7 ◽  
Author(s):  
Kouseya Choudhuri ◽  
Debarghya Chakraborty
Keyword(s):  
Spatial Variability ◽  
Soil Properties ◽  
Bearing Capacity ◽  
Coefficient Of Variation ◽  
Friction Angle ◽  
Horizontal Scale ◽  
Vertical Scale ◽  
Scale Of Fluctuation ◽  
The Mean ◽  
The Finite Difference Method

This paper intends to examine the influence of spatial variability of soil properties on the probabilistic bearing capacity of a pavement located on the crest of a fibre reinforced embankment. An anisotropic random field, in combination with the finite difference method, is used to carry out the probabilistic analyses. The cohesion and internal friction angle of the soil are assumed to be lognormally distributed. The Monte Carlo simulations are carried out to obtain the mean and coefficient of variation of the pavement bearing capacity. The mean bearing capacity of the pavement is found to decrease with the increase in horizontal scale of fluctuation for a constant vertical scale of fluctuation; whereas, the coefficient of variation of the bearing capacity increases with the increase in horizontal scale of fluctuation. However, both the mean and coefficient of variation of bearing capacity of the pavement are observed to be increasing with the increase in vertical scale of fluctuation for a constant horizontal scale of fluctuation. Apart from the different scales of fluctuation, the effects of out of the plane length of the embankment and randomness in soil properties on the probabilistic bearing capacity are also investigated in the present study.

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