static pile load testing
DESCRIPTION
pile testsTRANSCRIPT
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!