The Bearing Capacity of Rigid Piles Under Inclined Loads in Sand. II: Batter Piles

1973 ◽  
Vol 10 (1) ◽  
pp. 71-85 ◽  
Author(s):  
G. G. Meyerhof ◽  
Gopal Ranjan
Keyword(s):  
Bearing Capacity ◽  
Previous Investigation ◽  
Test Results ◽  
Inclined Load ◽  
Inclined Loads ◽  
Loading Tests ◽  
Batter Piles ◽  
Laterally Loaded ◽  
Ultimate Resistance ◽  
Good Agreement

Following the previous investigation reported in the first part on vertical piles, this second part of the paper presents an analysis of the results of loading tests on rigid batter piles under inclined load in sand. The bearing capacity of axially loaded batter piles is discussed by comparing experimental results and theoretical estimates. The theory for ultimate resistance of rigid vertical piles under horizontal loads is extended to that of laterally loaded batter piles. Model test results are compared with those of theoretical estimates and good agreement is found. Methods of analysis of vertical piles under inclined loads are extended to those of rigid batter piles under inclined loads in sand and the analysis is compared with some test results.

Bearing capacity of flexible batter piles under eccentric and inclined, loads in layered soil

1994 ◽  
Vol 31 (4) ◽  
pp. 583-590 ◽  
Author(s):  
G.G. Meyerhof ◽  
A.S. Yalcin
Keyword(s):  
Bearing Capacity ◽  
Model Test ◽  
Layered Structure ◽  
Layered Soil ◽  
Head Model ◽  
Test Results ◽  
Inclined Load ◽  
Eccentric Load ◽  
Inclined Loads ◽  
Batter Piles

The behaviour of single free-head model flexible vertical and batter piles under the general case of eccentric and inclined loads in two-layered soil is investigated. The bearing capacity of the piles is found to depend on the layered structure, the eccentricity and inclination of the load, and the pile batter. The theoretical estimates of ultimate loads obtained from semiempirical relations agree fairly well with the test results. Key words : bearing capacity, deformation, batter pile, eccentricity factor, eccentric load, inclination factor, inclined load, layered soil, model test, sand, clay.

The bearing capacity of rigid piles and pile groups under inclined loads in clay

1981 ◽  
Vol 18 (2) ◽  
pp. 297-300 ◽  
Author(s):  
G. G. Meyerhof
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Test Results ◽  
Pile Groups ◽  
Free Standing ◽  
Previous Theory ◽  
Inclined Loads ◽  
Load Tests ◽  
Batter Piles ◽  
Piled Foundations

The ultimate bearing capacity of rigid vertical and batter piles and pile groups in clay has been determined under various inclinations of the load, varying from the vertical to horizontal directions. The results of load tests on single model piles of different lengths and inclinations and on free-standing groups and piled foundations are compared with theoretical estimates. The influence of load inclination on the bearing capacity can be represented by simple interaction relationships between the axial and normal components of the ultimate load. The effect of eccentricity of the load on the ultimate bearing capacity of pile groups is discussed on the basis of previous theory and model test results.

The Bearing Capacity of Rigid Piles Under Inclined Loads in Sand. I: Vertical Piles

1972 ◽  
Vol 9 (4) ◽  
pp. 430-446 ◽  
Author(s):  
G. G. Meyerhof ◽  
Gopal Ranjan
Keyword(s):  
Bearing Capacity ◽  
Reasonable Agreement ◽  
Free Standing ◽  
New Approach ◽  
Methods Of Analysis ◽  
Inclined Loads ◽  
Loading Tests ◽  
Batter Piles ◽  
Piled Foundations ◽  
Plastic Theory

The bearing capacity of rigid vertical and batter piles under inclined loads in sand has been determined for model piles of different depth/diameter ratios. The first part of this paper deals with vertical piles and the second part will consider batter piles. The results of loading tests on free standing and piled foundations under inclinations of load varying from vertical to horizontal are analyzed. On the basis of plastic theory, a new approach for analysis of rigid vertical piles under horizontal loads is developed by extending Brinch Hansen's method; and previous methods of analysis by Meyerhof are extended to estimate the bearing capacity of vertical piles under inclined loads in sand. Loads on vertical piles are found to be in reasonable agreement with the proposed theories.

The Bearing Capacity of Rigid Piles Under Inclined Loads in Sand. III: Pile Groups

1973 ◽  
Vol 10 (3) ◽  
pp. 428-438 ◽  
Author(s):  
G. G. Meyerhof ◽  
Gopal Ranjan
Keyword(s):  
Test Results ◽  
Ultimate Capacity ◽  
Pile Groups ◽  
Free Standing ◽  
Model Pile ◽  
Inclined Loads ◽  
Pile Cap ◽  
Present Part ◽  
Loading Tests ◽  
Batter Piles

Following Part I on vertical piles and Part II on inclined piles the present Part III deals with the general principles for estimating ultimate capacity of a pile bent under inclined load. The results of loading tests on two model pile bents with depth/diameter ratios of 13 and 23 for free standing bents and 15 and 25 for piled bents are presented. Test results on free standing and piled bents are reported in compact and dense states of packing of sand. Bents with vertical and batter piles have been tested under inclinations of load varying from vertical to horizontal.The experimental results are discussed and conclusions regarding the behavior of free standing and piled bents under inclination of load, type of bent, and pile cap are drawn.

Behaviour of flexible batter piles under inclined loads in layered soil

1993 ◽  
Vol 30 (2) ◽  
pp. 247-256 ◽  
Author(s):  
G. G. Meyerhof ◽  
A. S. Yalcin
Keyword(s):  
Bearing Capacity ◽  
Reasonable Agreement ◽  
Influence Factors ◽  
Layered Soil ◽  
Head Model ◽  
Embedment Depth ◽  
Test Results ◽  
Inclined Loads ◽  
Vertical Displacements ◽  
Batter Piles

The behaviour of single free-head model flexible vertical and batter piles under central inclined loads in two-layered soil is investigated. The bearing capacity of the piles is found to depend on the layered structure, load inclination, and pile batter. The theoretical estimates obtained from semiempirical relations agree well with the test results. Previous displacement equations for flexible batter piles in elastic isotropic soil are modified for piles in anisotropic layered soil using an effective embedment depth of equivalent rigid piles. Practical equations for horizontal and vertical displacements of flexible batter piles are presented on the basis of resultant influence factors that are related to the batter angle, load inclination, and distribution of soil modulus with depth. The observed horizontal and vertical displacements of the piles are in reasonable agreement with the theoretical estimates, which are also supported by the results of some field cases. Key words : bearing capacity, deformation, batter pile, inclination factor, inclined load, layered soil, model test, sand, clay.

The bearing capacity of rigid piles and pile groups under inclined loads in layered sand

1981 ◽  
Vol 18 (4) ◽  
pp. 514-519 ◽  
Author(s):  
G. G. Meyerhof ◽  
S. K. Mathur ◽  
A. J. Valsangkar
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Test Results ◽  
Pile Groups ◽  
Free Standing ◽  
Previous Theory ◽  
Inclined Loads ◽  
Load Tests ◽  
Batter Piles ◽  
Theory And Model

The ultimate bearing capacity of rigid vertical and batter piles and pile groups in layered sand has been determined under various inclinations of the load varying from the vertical to horizontal directions. The results of load tests on single model piles of different inclinations and on free-standing groups are compared with theoretical estimates. The influence of load inclination on the bearing capacity can be represented by simple interaction relationships between the axial and normal components of the ultimate load. The effect of eccentricity of the load on the ultimate bearing capacity of pile groups is discussed on the basis of previous theory and model test results.

Pull-out capacity of single batter piles in sand

1986 ◽  
Vol 23 (3) ◽  
pp. 387-392 ◽  
Author(s):  
A. M. Hanna ◽  
A. Afram
Keyword(s):  
Design Method ◽  
Soil Mechanics ◽  
Earth Pressure ◽  
Axial Loading ◽  
Test Results ◽  
Passive Earth Pressure ◽  
Sand Soil ◽  
Pull Out ◽  
Batter Piles ◽  
Good Agreement

The pull-out capacity of single rigid vertical and batter piles in sand and subjected to axial loading has been investigated. Good agreement was found when test results on instrumented model piles were compared with theoretical estimates. The effect of pile inclination on the pull-out capacity has been explained by means of variable mobilized passive earth pressure on the pile's perimeter. A design method and charts are presented. Key words: pile foundation, pull-out capacity, vertical pile, batter pile, sand–soil mechanics.

scholarly journals The Bearing Capacity of Circular Footings in Sand: Comparison between Model Tests and Numerical Simulations Based on a Nonlinear Mohr Failure Envelope

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Sven Krabbenhoft ◽  
Johan Clausen ◽  
Lars Damkilde
Keyword(s):  
Bearing Capacity ◽  
Yield Criterion ◽  
Friction Angle ◽  
Triaxial Tests ◽  
Test Results ◽  
Finite Element Program ◽  
Model Foundation ◽  
Element Program ◽  
Confining Pressures ◽  
Good Agreement

This paper presents the results of a series of triaxial tests with dry sand at confining pressures varying from 1.5 kPa to 100 kPa at relative densities of 0.20, 0.59, and 0.84. The results, which are in reasonable accordance with an equation given by Bolton, show that the friction angle is strongly dependent on the stress level and on the basis of the test results, a nonlinear Mohr failure criterion has been proposed. This yield criterion has been implemented in a finite element program and an analysis of the bearing capacity of a circular shaped model foundation, diameter 100 mm, has been conducted. Comparisons have been made with results from 1g model scale tests with a foundation of similar size and a good agreement between numerical results and test results has been found.

Experimental Studies on Bearing Capacity of Post-Tensioned Unbonded Prestressed Concrete Hollowed Floors

2011 ◽  
Vol 368-373 ◽  
pp. 159-163 ◽  
Author(s):  
Xiao Hua Yang ◽  
Chao Yang Zhou ◽  
Xue Jun He ◽  
Zhi Qing Yang
Keyword(s):  
Bearing Capacity ◽  
Prestressed Concrete ◽  
Plastic Hinge ◽  
Experimental Studies ◽  
Load Test ◽  
Test Results ◽  
Three Stages ◽  
Hinge Model ◽  
Good Agreement ◽  
Post Tensioned

A 1/4 scales four-storey model of post-tensioned unbonded prestressed concrete hollow slab-column structure has been made to do the ultimate load test on the second-storey floor. By measuring the floor deflection, stresses of steel bars and cracks of floors, the bearing capacity of floor is explored. The bearing capacity tests of floor are divided into three stages: elastic stage, crack growth stage and destruction stage. Based on the test results and crack developments in floor, a improved plastic hinge model is carried out to predict the ultimate loads. The calculated results of the ultimate loads with improved plastic hinge model are in good agreement with the experiment data.

Slip modulus in bolted timber joints

1992 ◽  
Vol 19 (6) ◽  
pp. 960-964 ◽  
Author(s):  
D. B. Van Dyer
Keyword(s):  
Test Results ◽  
Lateral Loads ◽  
Initial Load ◽  
Theoretical Predictions ◽  
Mechanically Fastened ◽  
Timber Joints ◽  
Interlayer Slip ◽  
Laterally Loaded ◽  
Wood Columns ◽  
Good Agreement

This paper is concerned with the initial load–slip behaviour of laterally loaded bolted timber joints and deals specifically with verifying a theory for determining the values of slip modulus in mechanically fastened timber joints. Such a theory is essential in dealing with the phenomenon of interlayer slip, which occurs in built-up timber columns with nonrigid joints. The concept of a beam on an elastic foundation is used to evaluate the slip modulus. The theoretical predictions are compared with the test results of 75 timber joints. Good agreement is observed between the experiment and the theory. Key words: timber joints, bolts, nails, wood, interlayer slip, slip modulus, built-up wood columns, shear, lateral loads.

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