Guidelines for Designing Bridge Piers and Abutments for Vehicle Collisions

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General Information
Solicitation Number: 1000
Status: Solicitation withdrawn
Date Posted: Dec 20, 2005
Last Updated: Jul 06, 2006
Solicitation Expires: Sep 30, 2006
Partners: FL, GADOT, KS, NY, OH, PADOT, TN, TX, WI
Lead Organization: Texas Department of Transportation
Financial Summary
Commitment Start Year: 2006
Commitment End Year: 2008
100% SP&R Approval: Pending Approval
Commitments Required: $425,000.00
Commitments Received: $405,000.00
Contact Information
Lead Study Contact(s): Tom Yarbrough
tyarbro@dot.state.tx.us
Organization Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Florida Department of Transportation 2006 $50,000.00 Charles Boyd Patti Brannon 850-414-4616 patti.brannon@dot.state.fl.us
Georgia Department of Transportation 2006 $25,000.00 Paul Liles Supriya Kamatkar 404-347-0552 skamatkar@dot.ga.gov
Georgia Department of Transportation 2007 $25,000.00 Paul Liles Supriya Kamatkar 404-347-0552 skamatkar@dot.ga.gov
Kansas Department of Transportation 2007 $25,000.00 Loren Risch Rodney Montney 785-291-3844 rodney@ksdot.org
Kansas Department of Transportation 2008 $25,000.00 Loren Risch Rodney Montney 785-291-3844 rodney@ksdot.org
New York State Department of Transportation 2006 $30,000.00 Art Yannotti Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
Ohio Department of Transportation 2006 $25,000.00 Sean Meddles General Research 614-644-8135 Research@dot.state.oh.us
Ohio Department of Transportation 2007 $25,000.00 Sean Meddles General Research 614-644-8135 Research@dot.state.oh.us
Pennsylvania Department of Transportation 2006 $25,000.00 William Longstreet
Pennsylvania Department of Transportation 2007 $25,000.00 William Longstreet
Tennessee Department of Transportation 2006 $25,000.00 Edward Wasserman Stephanie Vincent 615.741.2203 Stephanie.Vincent@tn.gov
Tennessee Department of Transportation 2007 $25,000.00 Edward Wasserman Stephanie Vincent 615.741.2203 Stephanie.Vincent@tn.gov
Texas Department of Transportation 2007 $50,000.00 Tom Yarbrough Frank Bailey 512- 416-4730 rtimain@txdot.gov
Wisconsin Department of Transportation 2006 $25,000.00 Lori Richter 608-264-8435 lori.richter@dot.wi.gov

Background

Traffic counts, traffic mixes and site geometry combine to influence the probability of a collision and the magnitude of the consequences of a collision and are not included in the Specification. A probabilistic risk analysis for determining the design requirements should be considered/developed for designing piers and abutments for vehicle collisions.

Magnitude of the design force (400 KIP) was established from data available at the time the LRFD Specification was prepared. Additional data/information are now available and more are needed to address whether the magnitude of the 400 KIP design force should be changed. Recent tests with single unit trucks colliding with fixed bollards and concrete walls have yielded data that will be applicable. More information for heavily loaded articulated vehicles is still needed. Some helpful information might be obtained from reconstruction of recent collisions of such vehicles that have occurred in the field.

Objectives

The AASHTO LRFD Bridge Design Specifications require that "abutments and piers located within a distance of 30.0 FT of the edge of the roadway, or within a distance of 50.0 FT to the centerline of a railway track, shall be designed for an equivalent static force of 400 KIP..." Supporting documentation for this design requirement, both its applicability and the magnitude of the design force, is not extensive. Further detailed guidance for the design engineer is not available.

Two issues need to be addressed:

1. What risks warrant application of this requirement? and,

2. Is the magnitude of design force (400 KIP) appropriate?

Scope of Work

This project will be conducted in two phases, as listed below. All Phase 1 work shall be completed, and recommendations for Phase 2 work (if any) approved by the project sponsors, prior to commencement of any Phase 2 research activities.

Project Phasing and Suggested Tasks:

Phase 1 (18 months, $300,000 estimated) will include the following tasks:

1a. Literature review,

1b. Computer simulations of vehicle/bridge column and abutment collisions,

1c. Accident survey and analysis study,

1d. Development of a risk analysis methodology for vehicle/bridge column and abutment collisions (analogous to AASHTO LRFD vessel impact requirements).

1e. Detailed justification and work plan for research (if any) to be conducted under Phase 2 of the project.

1f. Provide facilities and host a meeting to present Phase 1 results to project sponsors, including pooled fund project participants from other state DOTs. Include $20,000 line item in project budget for reimbursement of travel expenses for out-of-state participants.

Phase 2 (6 months, $125,000 estimated) may include the following tasks:

2a. Crash testing with a single unit truck to verify loading from Phase 1 literature survey and computer simulations.

2b. Crash testing of a 5-axle tractor trailer rig to verify loading from Phase 1 literature survey and computer simulations.

Comments

Suggested contribution from each participating state is $50,000, $25,000 each year, in fiscal years 2006 & 2007. Contract will be executed after adequate funding is secured.

No document attached.

Guidelines for Designing Bridge Piers and Abutments for Vehicle Collisions

General Information
Solicitation Number: 1000
Status: Solicitation withdrawn
Date Posted: Dec 20, 2005
Last Updated: Jul 06, 2006
Solicitation Expires: Sep 30, 2006
Partners: FL, GADOT, KS, NY, OH, PADOT, TN, TX, WI
Lead Organization: Texas Department of Transportation
Financial Summary
Commitment Start Year: 2006
Commitment End Year: 2008
100% SP&R Approval: Pending Approval
Commitments Required: $425,000.00
Commitments Received: $405,000.00
Contact Information
Lead Study Contact(s): Tom Yarbrough
tyarbro@dot.state.tx.us
Commitments by Organizations
Agency Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Florida Department of Transportation 2006 $50,000.00 Charles Boyd Patti Brannon 850-414-4616 patti.brannon@dot.state.fl.us
Georgia Department of Transportation 2006 $25,000.00 Paul Liles Supriya Kamatkar 404-347-0552 skamatkar@dot.ga.gov
Georgia Department of Transportation 2007 $25,000.00 Paul Liles Supriya Kamatkar 404-347-0552 skamatkar@dot.ga.gov
Kansas Department of Transportation 2007 $25,000.00 Loren Risch Rodney Montney 785-291-3844 rodney@ksdot.org
Kansas Department of Transportation 2008 $25,000.00 Loren Risch Rodney Montney 785-291-3844 rodney@ksdot.org
New York State Department of Transportation 2006 $30,000.00 Art Yannotti Gary Frederick 518-457-4645 gary.frederick@dot.ny.gov
Ohio Department of Transportation 2006 $25,000.00 Sean Meddles General Research 614-644-8135 Research@dot.state.oh.us
Ohio Department of Transportation 2007 $25,000.00 Sean Meddles General Research 614-644-8135 Research@dot.state.oh.us
Pennsylvania Department of Transportation 2006 $25,000.00 William Longstreet
Pennsylvania Department of Transportation 2007 $25,000.00 William Longstreet
Tennessee Department of Transportation 2006 $25,000.00 Edward Wasserman Stephanie Vincent 615.741.2203 Stephanie.Vincent@tn.gov
Tennessee Department of Transportation 2007 $25,000.00 Edward Wasserman Stephanie Vincent 615.741.2203 Stephanie.Vincent@tn.gov
Texas Department of Transportation 2007 $50,000.00 Tom Yarbrough Frank Bailey 512- 416-4730 rtimain@txdot.gov
Wisconsin Department of Transportation 2006 $25,000.00 Lori Richter 608-264-8435 lori.richter@dot.wi.gov

Background

Traffic counts, traffic mixes and site geometry combine to influence the probability of a collision and the magnitude of the consequences of a collision and are not included in the Specification. A probabilistic risk analysis for determining the design requirements should be considered/developed for designing piers and abutments for vehicle collisions.

Magnitude of the design force (400 KIP) was established from data available at the time the LRFD Specification was prepared. Additional data/information are now available and more are needed to address whether the magnitude of the 400 KIP design force should be changed. Recent tests with single unit trucks colliding with fixed bollards and concrete walls have yielded data that will be applicable. More information for heavily loaded articulated vehicles is still needed. Some helpful information might be obtained from reconstruction of recent collisions of such vehicles that have occurred in the field.

Objectives

The AASHTO LRFD Bridge Design Specifications require that "abutments and piers located within a distance of 30.0 FT of the edge of the roadway, or within a distance of 50.0 FT to the centerline of a railway track, shall be designed for an equivalent static force of 400 KIP..." Supporting documentation for this design requirement, both its applicability and the magnitude of the design force, is not extensive. Further detailed guidance for the design engineer is not available.

Two issues need to be addressed:

1. What risks warrant application of this requirement? and,

2. Is the magnitude of design force (400 KIP) appropriate?

Scope of Work

This project will be conducted in two phases, as listed below. All Phase 1 work shall be completed, and recommendations for Phase 2 work (if any) approved by the project sponsors, prior to commencement of any Phase 2 research activities.

Project Phasing and Suggested Tasks:

Phase 1 (18 months, $300,000 estimated) will include the following tasks:

1a. Literature review,

1b. Computer simulations of vehicle/bridge column and abutment collisions,

1c. Accident survey and analysis study,

1d. Development of a risk analysis methodology for vehicle/bridge column and abutment collisions (analogous to AASHTO LRFD vessel impact requirements).

1e. Detailed justification and work plan for research (if any) to be conducted under Phase 2 of the project.

1f. Provide facilities and host a meeting to present Phase 1 results to project sponsors, including pooled fund project participants from other state DOTs. Include $20,000 line item in project budget for reimbursement of travel expenses for out-of-state participants.

Phase 2 (6 months, $125,000 estimated) may include the following tasks:

2a. Crash testing with a single unit truck to verify loading from Phase 1 literature survey and computer simulations.

2b. Crash testing of a 5-axle tractor trailer rig to verify loading from Phase 1 literature survey and computer simulations.

Comments

Suggested contribution from each participating state is $50,000, $25,000 each year, in fiscal years 2006 & 2007. Contract will be executed after adequate funding is secured.

No document attached.

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