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Evaluation of Alternative Abutment Piling for Low Volume Road Bridges

Project Details
STATUS

In-Progress

PROJECT NUMBER

17-600

START DATE

01/01/17

END DATE

09/30/19

FOCUS AREAS

Infrastructure

RESEARCH CENTERS InTrans, BEC
SPONSORS

Iowa Department of Transportation
Iowa Highway Research Board

Researchers
Principal Investigator
Behrouz Shafei

Faculty Affiliate

Co-Principal Investigator
Brent Phares

Bridge Research Engineer, BEC

Co-Principal Investigator
Bora Cetin

About the research

Alternatives to driving H piling are being utilized by other states and private industry. Helical screw pilings are being used and the load bearings are listed as 5 to 50 tons per piling. Micropilings are also being used with 90,000 bearing capacity being typical. Either of these may be a simpler answer to driving H piling. A study of their economics and application may be beneficial to Iowa counties.

In addition, counties have a need to utilize safe, cost-effective pile driving systems to reconstruct or repair bridges. Vibratory pile driving is a method to accomplish this goal. There is very little data available for tests on the strength of alternative piles or vibratory driven piling.

The objective of this project is to study the strength and bearing capacity of helical piles as well as piling driven with vibratory equipment. This project would develop design guidance, construction methods, acceptance criteria, and include development of training on design and construction using these alternative pile systems for local roads.

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