Clay J. Naito, Ph.D., P.E.
Associate Professor and Associate Chair
Dept. of Civil and Environmental Engineering

Contact Information
Links

Current Research:

NSF: Development of a Blast and Ballistic Resistant Precast Concrete Armored Wall System

NEES-CR: Impact Forces from Tsunami-Driven Debris

Inspection Methods & Techniques to Determine Non Visible Corrosion of Prestressing Strands in Concrete Bridge Components

Daniel P. Jenny PCI Fellowship: Analytical Assessment of the Resistance of Precast Strucutres to Blast Effects

Development of a Seismic Design Methodology for Precast Diaphragms

Development of a Welding Procedure Specification for Field Welding of Precast Concrete Connections

Use of Polyurea for Blast Hardening of Concrete Construction

Estimation of Concrete Respone Under Varying Confinement

Evaluation of Bond Mechanics in Prestressed Concrete Applications

Horizontal Shear Capacity of Composite Beams Without Ties

Lateral Resistance of Plywood and Oriented Strand Board Sheathing After Accelerated Weathering

Past Research Projects

Performance of Bulb Tees with Self Consolidating Concrete

FRP Bridge Decks with RC Parapets

Blast Resistance of a Load Bearing Shear Wall Building

Lehigh@NEES Equipment Site

Reserarch Experinece for Undergraduates

Seismic Evaluation of a Three Story WoodFrame Apartment Building with Tuck-Under Parking

Design of RC Bridge Beam-Column Connections

Response of Waffle Slab Building Systems to Seismic Loads

Development of Connection Details Between FRP Bridge Decks and Conventional Reinforced Concrete Parapets
PITA Project PIT-276-01

Background:
The aim of the research is to develop an effective means of anchoring reinforced concrete paprapets on FRP bridge decks. To assess the applicability of alternate transfer mechanisms, the measured responses are compared to AASHTO LRFD Specification Section 13 Railing design requirements. Four full-scale test specimens consisting of a protion of the FRP deck and reinforced concrete parapet were fabricated to match the as-built conditions in the Dubois Creek Bridge Demonstration Project constructed in PENNDOT District 4. The specimens measure 4-ft. wide by 10-ft. long and were tested to failure. The specimens are loaded at the parapet and restrained at the FRP deck. The load is applied quasi-statically under displacement control. The test program was completed in 2003.

Researchers:
Clay Naito, Principal Investigator
Seoksoon Lee, Graduate Student Researcher
Fyiad Constantine, Research Assistant

Publications:
Naito, C., Lee, S., Constantine, F., “PITA Project PIT-276-01 Laboratory Investigation of Glass Fiber Reinforced Polymer Bridge Slab to Reinforced Concrete Parapet Connection Details – Final Report,” ATLSS Report No.03-27, ATLSS Center, Lehigh University, December, 2003, 78 pages.

C. Naito, "Anchorage of Reinforced Concrete Parapets on GFRP Bridge Decks," ASCE Journal of Composites for Construction, Vol. 9, No.3, June 2005, pp.1-8.

Sponsors:
Pennsylvania Infrastructure Technology Alliance
Pennsylvania DOT

Other Participants:
Gannett Flemming

Page Last Updated Friday, 24-Jun-2005 18:10:20 EDT