Jointless Bridge Decks
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Author | : Paul Zia |
Publisher | : |
Total Pages | : 152 |
Release | : 1995 |
Genre | : Bridges |
ISBN | : |
The major focus of this research was to validate the concept of connecting two adjacent simple-span girders with a link slab to form a jointless bridge deck so as to eliminate the standard deck joint between the girders. Laboratory tests were conducted on two large-scale specimens to study the performance of the link slab and the girders. The test results indicated that the contribution of link slab to structural continuity is negligible since the stiffness of the link slab is much less than that of the beams with composite decks. Therefore the beams can be treated as simply supported structures without considering the link slab. Furthermore, the stresses in the link slab are controlled primarily by the predominant bending effect due to the end rotations of the beams rather than the axial load effect. A simplified method of analysis is proposed in which the end rotations of the two adjacent girders under a given loading are determined first. Then the end rotations are imposed on the ends of the link slab and the induced moment in the link slab is thus calculated. A design guideline for the link slab is also proposed and illustrated by a design example. The reinforcement for the link slab is designed to control the crack width in the link slab according to the AASHTO criterion.
Author | : Adel Kamal El-Safty |
Publisher | : |
Total Pages | : 452 |
Release | : 1994 |
Genre | : |
ISBN | : |
Author | : Alp Caner |
Publisher | : |
Total Pages | : 312 |
Release | : 1996 |
Genre | : |
ISBN | : |
Author | : Mervyn J. Kowalsky |
Publisher | : |
Total Pages | : 128 |
Release | : 2003 |
Genre | : Bridges |
ISBN | : |
Author | : Victor C. Li |
Publisher | : |
Total Pages | : 110 |
Release | : 2008 |
Genre | : Bridges |
ISBN | : |
The research is on the development of durable link slabs for jointless bridge decks based on strain-hardening cementitious composite - engineered cementitious composite (ECC). Specifically the superior ductility of ECC was utilized to accommodate bridge deck deformations imposed by girder deflection, concrete shrinkage, and temperature variations, providing a cost-effective solution to a number of deterioration problems associated with bridge deck joints. In this phase 3, research was initiated at developing a solution for early age cracking observed on the Grove Street Bridge ECC link-slab. Systematic investigations (both numerical and experimental) have been conducted on identifying factors which cause early age cracking, replicating early age cracking behavior observed in the field, developing new ECC materials solution to prevent early age cracking, documenting new ECC fresh and hardened properties, verifying new ECC performance by means of the large frame restrained shrinkage test, and revising special provision of ECC link slab. Grove Street Bridge was monitored constantly over the whole project period.
Author | : United States. Federal Highway Administration. Region 10 |
Publisher | : |
Total Pages | : |
Release | : 1987 |
Genre | : Bridges |
ISBN | : |
Author | : Victor C. Li |
Publisher | : |
Total Pages | : 110 |
Release | : 2005 |
Genre | : Bridges |
ISBN | : |
The research is on the development of durable link slabs for jointless bridge decks based on strain-hardening cementitious composite - engineered cementitious composite (ECC). Specifically the superior ductility of ECC was utilized to accommodate bridge deck deformations imposed by girder deflection, concrete shrinkage, and temperature variations, providing a cost-effective solution to a number of deterioration problems associated with bridge deck joints. In this phase 3, research was initiated at developing a solution for early age cracking observed on the Grove Street Bridge ECC link-slab. Systematic investigations (both numerical and experimental) have been conducted on identifying factors which cause early age cracking, replicating early age cracking behavior observed in the field, developing new ECC materials solution to prevent early age cracking, documenting new ECC fresh and hardened properties, verifying new ECC performance by means of the large frame restrained shrinkage test, and revising special provision of ECC link slab. Grove Street Bridge was monitored constantly over the whole project period.
Author | : Victor Li |
Publisher | : |
Total Pages | : 96 |
Release | : 2003 |
Genre | : Concrete bridges |
ISBN | : |
Author | : Maher K. Tadros |
Publisher | : Transportation Research Board |
Total Pages | : 64 |
Release | : 1998 |
Genre | : Technology & Engineering |
ISBN | : 9780309062602 |
Author | : William Zuk |
Publisher | : |
Total Pages | : 21 |
Release | : 1981 |
Genre | : Bridges |
ISBN | : |
Presented is a summary of jointless bridge designs as twelve states; namely, California, Colorado, Idaho, Iowa, Kansas, Missouri, Nebraska, North Dakota, South Dakota, Tennessee, Virginia, and Wisconsin. Most of these states use some form of integral abutments for their steel or concrete structures. Bridges of lengths up to about 600 ft. (180 m) constructed with integral abutments have performed satisfactorily over a number of years. Projected are jointless bridges over 900 ft. (270 m) in length.