Prediction of Lateral Load Response for a Pile Group

1997 ◽  
Vol 1569 (1) ◽  
pp. 36-46 ◽  
Author(s):  
Pedro F. Ruesta ◽  
F. C. Townsend
Keyword(s):  
Test Group ◽  
Pile Group ◽  
Lateral Load ◽  
Load Test ◽  
Pressuremeter Test ◽  
In Situ Test ◽  
Concrete Piles ◽  
Load Response ◽  
Pile Load Test

A full-scale lateral load test of a pile group consisting of 16 (4 by 4) prestressed 76-cm-square concrete piles was conducted at Roosevelt Bridge, Stuart, Florida, during the summer of 1996. Presented are ( a) in situ test results, ( b) various p-y curves from these tests, and ( c) comparisons of various computer predictions (FLPIER, GROUP, and PIGR3D) using p-y curves tempered with results from a single-pile load test. From these comparisons, the best Class A prediction is made for the 16-pile group using FLPIER with nonlinear pile properties; p-y multipliers of 0.8, 0.4, 0.3, and 0.3 for the leading, middle, and trailing two rows, respectively; and dilatometer test—pressuremeter test p-y curves. This prediction suggests that an average load per pile of 280 kN will produce a deflection of 0.1 m (63 kips/pile at a deflection of 3.9 in.) for the test group.

In situ testing and its application to foundation engineering

1986 ◽  
Vol 23 (4) ◽  
pp. 573-594 ◽  
Author(s):  
P. K. Robertson
Keyword(s):  
Test Methods ◽  
Load Test ◽  
Foundation Engineering ◽  
Penetration Test ◽  
In Situ Testing ◽  
Cone Penetration ◽  
Specific Test ◽  
Pressuremeter Test ◽  
In Situ Test

The status of in situ testing and its application to foundation engineering are presented and discussed. The in situ test methods are discussed within the framework of three groups: logging, specific, and combined test methods. The major logging test methods discussed are standard penetration test (SPT), cone penetration test (CPT), and the flat plate dilatometer test (DMT). The major specific test methods discussed are the prebored pressuremeter test (PMT), the self-bored pressuremeter test (SBPMT), and the screw plate load test (SPLT). Discussion is also presented on recent tests that combine features of logging tests (using the CPT) and specific tests (e.g. the seismic, the electrical resistivity/dielectric, and the lateral stress sensing cone penetration tests). A brief discussion is also presented on the applicability, as perceived by the author, of existing in situ test methods and the future of in situ testing applied to foundation engineering. Key words: in situ testing, foundation engineering, penetration testing, pressuremeter.

Characteristics of Cast-InSitu Concrete Pipe Pile under Lateral Load

2012 ◽  
Vol 204-208 ◽  
pp. 743-746
Author(s):  
Zhi Tao Ma ◽  
Yong Ping Wang
Keyword(s):  
Lateral Load ◽  
Pile Driving ◽  
Soft Ground ◽  
General Introduction ◽  
In Situ Test ◽  
Pipe Pile ◽  
Concrete Pipe

The cast-in-situ concrete pipe pile is a new kind of pile used widely in China to improve the soft ground. In this paper, the general introduction of this pile was given, mainly including the pile driving machine, the technique of pile working and the structure of pile. At last, one in situ test of this pile under lateral load were given, the characteristics of displacement of pile body and displacement of pile top were analyzed. These results can give a reference for practice project.

Load tests on bedrock

1970 ◽  
Vol 7 (4) ◽  
pp. 464-470 ◽  
Author(s):  
J. L. Seychuk
Keyword(s):  
Elastic Material ◽  
Steel Plate ◽  
Applied Pressure ◽  
Load Test ◽  
Vertical Load ◽  
Subgrade Reaction ◽  
Concrete Piles ◽  
Limestone Bedrock ◽  
Load Tests ◽  
Pile Load Test

Load tests involving the use of a steel plate, a concrete socket, and full scale concrete piles were carried out at two separate sites in Ontario to determine the load bearing characteristics of shale and limestone bedrock. It was found that the essentially sound bedrock behaved as an elastic material under the maximum applied pressure of 260 tons/sq. ft (254 × 104 kg/m2). In addition to the vertical load tests on the rock, a lateral pile load test was carried out to evaluate the modulus of horizontal subgrade reaction of the fissured clay overburden at one of the sites.

Discussion of an instrumented screw pile load test and connected pile group load settlement behavior

2013 ◽  
Vol 1 (1) ◽  
pp. 13-36 ◽  
Author(s):  
P.O. Van Impe ◽  
W.F. Van Impe ◽  
L. Seminck
Keyword(s):  
Pile Group ◽  
Load Test ◽  
Soil Conditions ◽  
Pile Capacity ◽  
Screw Pile ◽  
Settlement Behavior ◽  
Heterogeneous Soil ◽  
Pile Load Test ◽  
The One ◽  
Oil Tanks

The aim of the paper is to discuss a fully instrumented screw pile load test up to failure, in difficult heterogeneous soil conditions along the shaft. The pre-stressing of the pile during its installation process has been brought to attention as an important item to assisting in explaining the differences in pile capacity and load settlement curve on the one hand, and the data as registered from the pile shaft instrumentation. In the second part of the paper, starting info on the registered load settlement data of the foundation slabs of each of the three, closely positioned, oil tanks of 48 m diameter and 19 m of height are shared and briefly analyzed.

Field pile load tests in saline permafrost. I. Test procedures and results

1993 ◽  
Vol 30 (1) ◽  
pp. 34-45 ◽  
Author(s):  
K. W. Biggar ◽  
D. C. Sego
Keyword(s):  
Companion Paper ◽  
Load Test ◽  
Load Testing ◽  
Test Procedures ◽  
Testing Procedures ◽  
Uplift Load ◽  
Load Tests ◽  
Pile Load Test ◽  
Pile Load Tests

A pile load test program carried out in Iqaluit, Northwest Territories, to provide design information for the Short Range Radar sites is described. The program consisted of testing 10 steel pipe piles with various surface modifications backfilled with clean sand and 4 Dywidag bars backfilled with Ciment Fondu™ grout. All tests were performed in saline permafrost. This paper describes the site conditions, installation procedures and pile uplift load testing procedures, and results of the pile load tests. The beneficial effect of modifications to the pile surface and backfill material is identified. The analysis and discussions of the results are presented in a companion paper. Key words : permafrost, saline, piles, load tests, field, in situ, capacity.

The Research of Pile Load Test on Permafrost Regions

2012 ◽  
Vol 446-449 ◽  
pp. 1123-1126
Author(s):  
Xu Wang ◽  
Li Feng Wang ◽  
Zi Qiang Wang ◽  
Yong Hang Feng
Keyword(s):  
Pile Foundation ◽  
Working Condition ◽  
Reference Data ◽  
Load Test ◽  
Vertical Load ◽  
Concrete Piles ◽  
Loading Method ◽  
Reinforced Concrete Piles ◽  
Pile Load Test ◽  
Permafrost Regions

Through conducting load test on reinforced concrete piles of the bridge in Kunlun Pass Basin, the research is mainly about pile foundation bearing capacity on permafrost regions. The paper expounds the fundamental of pile vertical load test and the loading method. Through analyzing the test data, what can be concluded is that it can be close to actual working condition of piles when pile load test is conducted on permafrost regions. Meanwhile, reference data is provided for future bridge projects in the application of pile on permafrost regions.

Interpretation of Lateral Load Test of Batter Pile Group Using High Order Polynomials Curve Fitting

2011 ◽  
Author(s):  
Binay Pathak ◽  
Murad Abu-Farsakh ◽  
Xinbao Yu ◽  
Khalid Alshibli
Keyword(s):  
Curve Fitting ◽  
Pile Group ◽  
Lateral Load ◽  
High Order ◽  
Load Test

Study of static lateral behavior of battered pile group foundation at I-10 Twin Span Bridge using three-dimensional finite element modeling

2016 ◽  
Vol 53 (6) ◽  
pp. 962-973 ◽  
Author(s):  
Ahmad Souri ◽  
Murad Abu-Farsakh ◽  
George Voyiadjis
Keyword(s):  
Three Dimensional ◽  
Pile Group ◽  
Lateral Load ◽  
Load Test ◽  
Fe Model ◽  
Soil Resistance ◽  
Group Effect ◽  
Dimensional Finite Element ◽  
Lateral Behavior ◽  
Three Dimensional Finite Element

In this study, the static lateral behavior of a battered pile group foundation was investigated using three-dimensional finite element (FE) analysis. The FE model was used to simulate the static lateral load test that was performed during the construction of the I-10 Twin Span Bridge over Lake Pontchartrain, La., in which two adjacent bridge piers were pulled against each other. The pier of interest was supported by 24, 1:6 batter, 34 m long piles in a 6 × 4 row configuration. The FE model of the battered pile group was developed in Abaqus and verified using the results from the field test. The model utilized an advanced constitutive model for concrete, which allowed distinct behavior in tension and compression, and introduced damage to the concrete stiffness. The soil domain comprised of several layers in which the constitutive behavior of clay layers was modeled using the anisotropic modified Cam-clay (AMCC) model, and for sands using the elastic perfectly plastic Drucker–Prager (DP) model. FE results showed good agreement with the results of the lateral load test in terms of lateral deformations and bending moments. The results showed that the middle rows carried a larger share of lateral load than the first and the last rows. The pile group resisted a maximum lateral load of 2494 t at which the piles were damaged within a 6 m zone from the bottom of the pile cap. The edge piles carried larger internal forces and exhibited more damage compared to the inner piles. The soil resistance profiles showed that soil layering influenced the distribution of resistance between the soil layers. A series of p–y curves were extracted from the FE model, and then used to study the influence of the group effect on the soil resistance. The p–y curves showed that the group effect reduced the soil resistance in all rows, with the lowest resistance in the third row. Finally, the p-multipliers were calculated using the extracted p–y curves, and compared to the reported p-multipliers for vertical pile groups.

Sign in / Sign up

Export Citation Format

Share Document