Louisiana Highway 1 Pile Load Test Program

The maximum load carrying capacity of bored piles is a complex problem because it is a function of a number of factors, these factors include methods of soil exploration, ground water condition, types of grading of concrete, quantity and quality of concrete. The knowledge of Geotechnical test is important for the most economical design of the piles. This paper describes some important aspects of field investigation, design and construction of in-situ bored pile foundation, field pile load test of experience gained from the construction of the pile at a site in Aathoor in Tamil Nadu, India. The site was fully sandy soil from existing ground level. The design of bored pile under axial compression was done using Empirical formula, pile load test and by using PLAXIS 2D software. Results were compared with vertical load and settlement in this site.

Download Full-text

CPT-based design method for steel pipe piles driven in very dense silica sands compared to the Euripides pile load test results

Frontiers in Offshore Geotechnics ◽

10.1201/noe0415390637.ch74 ◽

2005 ◽

Cited By ~ 1

Author(s):

J Colliat ◽

P Foray

Keyword(s):

Design Method ◽

Load Test ◽

Steel Pipe ◽

Test Results ◽

Pile Load Test

Download Full-text

Case 2: Pile Load Test at Ontario (Ismael and Klym, )

Geotechnical Engineering ◽

10.1201/9781482275858-368 ◽

2002 ◽

pp. 752-754

Keyword(s):

Load Test ◽

Pile Load Test

Download Full-text

Behaviour of friction piles in soft sensitive clays

Canadian Geotechnical Journal ◽

10.1139/t80-023 ◽

1980 ◽

Vol 17 (2) ◽

pp. 203-224 ◽

Cited By ~ 14

Author(s):

R. Blanchet ◽

F. Tavenas ◽

R. Garneau

Keyword(s):

Precast Concrete ◽

Soft Clay ◽

Load Test ◽

Pile Groups ◽

Test Program ◽

Shear Creep ◽

Soft Clays ◽

The North ◽

Effective Stress Analysis

During the construction of heavy structures, such as bridges and overpasses, on soft clays on the north shore of the St. Lawrence Valley, a detailed load test program on friction piles was performed to establish the characteristics of the most suitable type of pile and to study its long-term behaviour. Three types of piles, timber, steel pipe with closed end, and precast concrete Herkules H-420 piles, were tested. Four timber piles driven in a group and submitted to a 712 kN load served to study the long-term settlement of a small group of piles. Three deep settlement gauges were installed in the centre of this group for measuring settlements in clay at various depths.This test program was completed by the instrumentation of two bridge piers in order to verify the behaviour of larger groups of piles.The paper presents the results of the test piles, the long-term behaviour (4 years) of the bridge pier foundations resting on friction piles in soft clay, and the interpretation of the results.This study shows that the pore pressures induced by pile driving are related to the pre-consolidation of the clay and that they are much larger for tapered piles. It is demonstrated that the effective stress analysis method proposed in 1976 by Meyerhof determines adequately the ultimate pile bearing capacity, but that the effect of the timber pile taper doubles the skin friction.The settlement analysis of pile groups shows that settlements are due to the reconsolidation of the clay and shear creep deformations in the clay close to the pile wall.

Download Full-text

Predicting the Ultimate Bearing Capacity of Single Piles Based on CPTU

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.4402 ◽

2011 ◽

Vol 243-249 ◽

pp. 4402-4407

Author(s):

Yong Hong Miao ◽

Guo Jun Cai ◽

Song Yu Liu

Keyword(s):

Load Test ◽

Load Testing ◽

Pile Capacity ◽

Piezocone Penetration Test ◽

Load Carrying ◽

Load Tests ◽

Pile Load Test ◽

Single Piles ◽

Pile Load Tests ◽

Best Fit

Six methods to determine axial pile capacity directly based on piezocone penetration test (CPTU) data are presented and evaluated. Analyses and evaluation were conducted on three types piles that were failed during pile load testing. The CPT methods, as well as the CPTU methods, were used to estimate the load carrying capacities of the investigated piles (Qp ). Pile load test were used to determine the measured load carrying capacities (Qm). The pile capacities determined using the different methods were compared with the measured pile capacities obtained from the pile load tests. Two criteria were selected as bases of evaluation: the best fit line for Qp versus Qm and the arithmetic mean and standard deviation for the ratio Qp /Qm. Results of the analyses showed that the best methods for determining pile capacity are the CPTU methods.

Download Full-text