02456Dynamic Testing And Analysis Of Driven Piles

DYNAMIC TESTING AND ANALYSIS OF DRIVEN PILES

PART 1 GENERAL

1.1SECTION INCLUDES

restrikes by a Dynamic Testing Consultant retained by the Contractor to evaluate driving resistance, pile stresses, pile integrity, and pile driving efficiency.

Contractor to evaluate driving resistance.

1.2RELATED SECTIONS Not Used

1.3REFERENCES

1.4DEFINITIONS Not Used

1.5SUBMITTALS

following:

testing, and analysis, including:

years of experience. Provide at least the following for each project: 1) Project name, bridge locations (state, routes, and bridge identifiers), owner, scope of work, and date completed 2) Number and type of dynamic pile tests and number of signal matching analyses

restrike driving

Dynamic Testing and Analysis of Driven Piles

3) One owner or agent reference with contact information (phone and email)

for oversight or inspection of the project.

following:

including:

dynamic test results, and comments on the results

Engineer seal

1.6DYNAMIC TESTING CONSULTANT

pile testing and signal matching analysis on test piles.

initial driving of test piles.

dynamic pile testing and signal matching analysis are as follows:

Dynamic Testing and Analysis of Driven Piles

Association (PDCA)–endorsed Dynamic Measurement and Analysis Proficiency Test, and at least 3 years of experience in dynamic pile testing and analysis that includes the successful completion of at least 8 projects in similar geotechnical conditions.

analysis that includes the successful completion of at least 12 projects in similar geotechnical conditions.

PART 2 PRODUCTS

2.1DYNAMIC PILE TESTING EQUIPMENT

manufacturer within the previous two years.

PART 3 EXECUTION

3.1DYNAMIC PILE TESTING

placed in the leads. Refer to ASTM D 4945.

pile preparation and instrument attachment at the Contractor’s option if this work is completed under the direct supervision of the Dynamic Testing Consultant.

production piles designated as test piles and provides data used to establish the pile driving criteria for production piles.

abutment and bent.

Dynamic Testing and Analysis of Driven Piles

abutment and bent from where the first test pile was driven if the abutment or bent foundation length is greater than 100 ft.

monitor hammer and drive system performance (including the occurrence of bending), and evaluate driving resistance. 1) Notify the Contractor immediately if the dynamic testing indicates the hammer and drive system is not performing properly, if there is indication that bending is occurring, or if driving stresses exceed 90 percent of the yield stress of the pile material (0.9Fy). 2) Notify the Engineer and the Contractor immediately if the dynamic testing indicates that pile damage may have occurred during driving.

to achieve the minimum driving resistance or if pile relaxation is a concern. 1) Wait to perform the restrike dynamic testing for at least the waiting period shown or as directed by the Engineer.

record during dynamic pile testing.

considered to be separate tests.

3.2DYNAMIC PILE ANALYSIS

end of initial driving and at each restrike event, or as directed by the Engineer.

END OF SECTION

Dynamic Testing and Analysis of Driven Piles