Details:

Creators:
Pavlich, Benjamin S. ; Burgueño, Rigoberto
Pavlich, Benjamin S. ; Burgueño, Rigoberto Less -
Corporate Creators:
Michigan State University. Department of Civil and Environmental Engineering
Corporate Contributors:
Michigan. Dept. of Transportation
Subject/TRT Terms:
[+]
Analysis Box Beams Box Girder Bridges Bridge Prefabricated Bridges Steel Steel Bridges Steel Decks Transportation Transverse Reinforcement Tranverse Joints
Publication/ Report Number:
RC-1507
Resource Type:
Tech Report
Geographical Coverage:
Michigan ; United States
Michigan ; United States Less -
Edition:
Final Report 01-01-06 to 04-30-07
Contracting Officer:
Steve Kahl
Corporate Publisher:
Michigan State University. Dept. of Civil and Environmental Engineering
Abstract:
Prefabrication is a popular practice that has gained widespread use in the bridge engineering community. Often certain components of a bridge are prefabricated and then assembled at the job site. However, this report focuses on the possibility of prefabricating a box girder/slab unit and shipping the entire assembly to a job site, where only placement and transverse post-tensioning would be required to complete the construction. This could drastically reduce construction time, eliminating the need for lengthy and costly road closures. The objective of the project was to evaluate through numerical simulations the feasibility of creating an entirely prefabricated composite box girder bridge system and employing such a system for highway bridges. This included evaluating the global response of the system, local response of the composite girder/deck units and joints, and the vibration characteristics of the resulting bridge systems. The main issue to be resolved was the method for longitudinally joining the girder/deck units such that continuity between them can be maintained. The system was evaluated with a hierarchical suite of finite element analyses. Each analysis was specially designed to focus on one of the designated areas of study. The most complex models focused the behavior of transversely posttensioned joints, capturing the contact interaction between individual girder/slab units. To ensure accuracy, the analytical models were checked against theoretical predictions and experimental data available outside the project. Results from the simulation studies of this work indicated that the prefabricated steel/concrete composite girder/deck units are a safe and viable system for short-span highway bridges. A parametric study found acceptable geometries for a range of spans and girder spacing. While the main concern with the system was maintaining continuity between the prefabricated units. 3D FE models indicated that this was indeed possible to achieve while remaining within the AASHTO limits for transverse post-tensioning. This was evidenced by a minimal deviation between the stress and deflection profiles of prefabricated bridges and corresponding models with a continuous slab. A minimum joint opening criterion equal to the crack control limits in reinforced concrete elements was adopted. It was shown that acceptable joint closure could be maintained below the AASHTO post-tensioning limits. Vibration characteristics were also evaluated and found to consistent with the performance of a continuous system.
Format:
PDF
Funding:
2002-0532
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:081c18bd4377b6f392c52dd656f5cd2bcb594f7c00431f4c2675ad6760831d24
Download URL:
https://rosap.ntl.bts.gov/view/dot/37788/dot_37788_DS1.pdf
File Type:

Supporting Files

• No Additional Files

More +