STATIC PILE LOAD TESTING

Why Pile Testing?

- To determine the capacity of the pile- To arrive at design load for the

superstructure- To observe the variation of different

loadings to settlement of the pile.

Types of Pile Testing

Static Pile Load Test

Dynamic Pile Load Test

Statnamic Pile Load Test

Static Pile Load Test

The static load test involves the direct measurement of pile head displacement in the response to a physically applied test load. it is the most fundamental form of pile load test and is considered as the bench-mark of pile performance. testing has been performed in the load range 100kN to 12,000 kN

Application of Load

Kenteledge load test Method

Reaction beam load test Method/ Rock Anchoring Method

Bi-Directional load testing

Kenteledge load test MethodKenteledge tests in drilled or driven piles consist of constructing a reaction frame around the test pile and incrementally loading the pile, usually with a hydraulic jack

Reaction beam load test Method

 The reaction beams are large one-piece or segmented steel beams, specially designed and engineered to safely withstand the forces that are applied to them during static load testing. Used in conjunction with ground anchors or anchor piles, reaction beams offer a fast, cost effective, method of performing static load tests.

Bi-Directional load testing

The Bi Directional Static Load Test is truly an innovative static load testing technique. It is the only load test that provides separate measurement of a pile's end bearing and skin friction. The reaction system in Bi Directional Static Load Test is derived from the soil and/or rock along and below the drilled shaft, hence the system is not restricted by the limits of overhead structural beams, large kentledge, tie-down reaction piles and deep cut of level as in the conventional top loaded static load test system.

Type of Tests: Initial Test

Determination of ultimate load capacities and arrival at safeload by application of factor of safety To provide guidelines for setting up the limits of acceptance

for routine tests, To study the effect of piling on adjacent existing structures

and take decision for the suitability of type of piles to be used, To get an idea of suitability of piling system, and To have a check on calculated load by dynamic or static

approaches.

Routine Test One of the criteria to determine the safe load of the pile; checking safe load and extent of safety for the specific

functional requirement of the pile at-working load; and Detection of any unusual performance to the finding of the

initial test, if carried out.

Types of Loading:

Vertical Load TestMaintained Load TestCyclic Load TestCRP Test

Lateral Load Test Pull Out Test

Results

The pile test data essentially concerns three variables, namely, load, displacement and time. These are to be recorded sequentially for the tests under consideration and recorded in a suitable tabular form along with the information about the pile.

The data may be suitably presented by curves drawn between the variables and safe loads shown on the graphs. Load displacement curveshould be an essential part of presentation.

Typical Graphical Representations

0.000 100.000 200.000 300.000 400.000 500.000 600.000 700.000 800.000

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

8.00

9.00

10.00

ROUTINE PILE LOAD TEST LOAD VS. SETTLEMENT CURVE LOAD IN MT

Set

tlem

ent

in m

m

Typical Graphical Representations

0 250 500 750 1000 1250 1500 1750 2000 2250 25000.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

TIME VS SETTLEMENT

Time in minutes

Sett

lem

ent

in m

m

Typical Graphical Representations

0 500 1000 1500 2000 25000

100

200

300

400

500

600

700

800

900

TIME VS LOAD

Time in Minutes

Load

in T

ons

Photos

Vertical Pile load Test Arrangement

Photos

Lateral Pile load Test Arrangement

Photos

Pull Out test arrangement – On uplift pile

Thank You!