Unfortunately, the introduced longitudinal expansion joint can result in deterioration similar to that resulting from using transverse joints at bridge abutments and piers. The reason that longitudinal expansion joints are used in wide bridges is related to concerns about deck cracking resulting from constrained expansion and contraction.
392 Chapter 12 Longitudinal Joint Details for Accelerated Bridge Construction: Fatigue Evaluation 12.0 Introduction Chapter 9 presented results of a preliminary study that assessed potential longitudinal and transverse joint connection details for CIP joints between …
Longitudinal joints used for connecting box beams in bridge superstructures are prone to the formation and propagation of cracks, causing various stru…
Expansion joints are prone to leak and allow the ingress of de-icing salts into the bridge deck and substructure. In general all bridges are made continuous over intermediate supports and decks under 60 metres long with skews not exceeding 30° are made integral with their abutments.
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Longitudinal deck expansion joints should be avoided for bridge widths under 100’. To accommodate differential lateral movement, elastomeric bearings or combination bearings with the capacity for lateral movement should be used instead of longitudinal joints where practical. For widths in excess of 100’, a longitudinal deck expansion joint ...
Design parameters occasionally require a longitudinal joint in the bridge deck to accommodate extreme bridge width, jumps in elevation across the width of the deck, or construction phasing requirements.
Longitudinal joints used for connecting box beams in bridge superstructures are prone to the formation and propagation of cracks, causing various stru…
Improved Longitudinal Joint Details in Decked Bulb Tees for Accelerated Bridge Construction: Concept Development Journal of Bridge Engineering August 2009 Improved Seismic Design Procedure for Concrete Bridge Joints
for Longitudinal Cracks and Joints Separation in Concrete Pavement,” which investigated the causes and repairs of longitudinal joint separations and faulting. 17. Key Words Longitudinal Cracks, Joint Separation, faulting, pavements 18. Distribution Statement …
longitudinal joints to resist the dead and live loading. Durability, however, has proven to be a concern. Over the service life of the bridge, excessive cracking of the longitudinal joint has been encountered, leading to moisture and chloride penetration of the joint,
In fact, longitudinal joints are normally designed at a regular spacing e.g. 4.5m to accommodate the effect of differential settlement of pavement foundation. When uneven settlement occurs, the tie bars in longitudinal joints perform as hinges (Ministry of Transport (1955)) which allow for the settlement of concrete carriageway.
♦ If a full depth open longitudinal joint is used at the phase line, the bridge is considered 2 structures and should have 2 NBI numbers. ♦ Phased superstructures may require variable spacing of beams. ♦ Load rating of the existing structure is required if the phasing …
Various types of loads are considered for design of bridge structures. These loads and their combinations decides the safety of the bridge construction during its use under all circumstances. The design loads should be considered properly for perfect design of bridge. Different design loads acting on bridges are explained below. Contents:Types of Loads for Design […]
Bridge Deck Joints and Deck Joint Seals Introduction Although often thought of as static, highway structures are continually in a state of motion. Expansion and contraction caused by temperature changes, shortening and creep caused by prestressing, deflections caused by live loads, and longitudinal forces
• Bridge deck joints should protect the interior edges of concrete decks from vehicle loads, seal the joint openings, and accommodate movements resulting from temperature changes and creep and shrinkage of concrete • Joint failure is a nationwide problem in the United States • Failure is not necessarily caused by the joint material
A longitudinal contraction joint is required when the concrete placement width is more than 15 ft. because the chances of cracking, in the longitudinal direction, increase. In normal concrete pavement construction, the width of the concrete placement varies and can be as wide as 50 ft.
Bridge Deck Joints and Deck Joint Seals Introduction Although often thought of as static, highway structures are continually in a state of motion. Expansion and contraction caused by temperature changes, shortening and creep caused by prestressing, deflections caused by live loads, and longitudinal forces
To investigate this critical aspect in the longitudinal bridge joints made with shrinkage-compensating cement concrete, a set of heat transfer analyses were conducted on the FE models that replicate the test specimen. In general, temperature, T, at a given location, (x, y, z), of a structure at time, t, can be determined based on the Fourier ...
Request PDF | Rehabilitation of Longitudinal Joints in Double-Tee Girder Bridges | Precast prestressed double-tee girder bridges are common on county bridges in South Dakota. However, the ...
15-11-2018· The longitudinal joint of the bridge was subsequently rehabilitated using the two detailing, each was incorporated on one-half of the bridge length.
German Standards Longitudinal Expansion Joints Bridge Decks. AVIDA bridge modular expansion joints are based on the following concept: The movement gap at the end of a bridge deck is divided into smaller individual gaps by horizontal lamella beams. It enables deck movements of well over 2’000 mm to be accommodated. AVIDA Modular expansion joints is widely used for longitudinal movement from ...
Investigation of Ultra-High Performance Concrete for Longitudinal Joints in Deck Bulb Tee Bridge Girders. Publication URL: Full Document (pdf 22.8 MB) In recent decades, many state DOTs have implemented ultra-high performance concrete (UHPC) in bridge construction because of
24-9-2003· The specification of placing a longitudinal joint in a bridge deck is usually the result of concerns about cracking due to concrete shrinkage, and easier construction (some contractors may not have a screed long enough to span the >90 width of the deck). DOTs usually have a preference based upon previous performance of bridges already in service.
• Bridge deck joints should protect the interior edges of concrete decks from vehicle loads, seal the joint openings, and accommodate movements resulting from temperature changes and creep and shrinkage of concrete • Joint failure is a nationwide problem in the United States • Failure is not necessarily caused by the joint material
The bridge designer should specify the expansion joints in a similar manner to bearings, giving details of characteristic and design values of displacements to the joint designer. Annex B of BS EN 1993-2 [2] contains guidance for the preparation of a technical specification for expansion joints.
If the bridge deck joint sealing systems available to transporta ... described in this paper, the longitudinal, lateral, and vertical restraints of the superstructure are the most important. This type of structure should not be considered for design unless its designer is