Cracking in bridge decks has been a main concern of bridge designers and owners for decades. Various contributing factors have been identified, but their relationships are not fully understood. The Minnesota Department of Transportation has collected data during construction of bridges between the dates of approximately July 2005 and present.
Girder depth/spacing • High relative girder-to-deck stiffness is associated with increased cracking • Wide flanges and composite steel plate girders may be associated with restraint-induced cracking.
Cracking of the concrete decks on newly constructed bridges in Minnesota has become a significant concern. Since 2005 MnDOT has been collecting bridge deck construction and early age cracking information on a “Bridge Deck Placement Data Form.”
Concrete cracking in bridge decks remains an important issue relative to deck durability. Cracks can allow increased penetration of chlorides, which can result in premature corrosion of the reinforcing steel and subsequent spalling of the concrete deck.
Advanced crack detection and segmentation on bridge decks …
2023年10月12日 · Access five object detection networks for crack detection on high-res bridge deck images, emphasizing speed and accuracy. Optimize segmentation algorithms for precise crack segmentation on complex bridge deck backgrounds. Develop an efficient and accurate method for determining crack length and width on bridge decks.
Investigation of Likelihood of Cracking in Reinforced Concrete Bridge Decks
2013年3月29日 · This analytical study examines the effect of several parameters on the development of transverse cracking in bridge decks including the effect of creep, shrinkage, thermal expansion, strength of concrete, deck thickness, bridge span length, bridge continuity, traffic load and load patterns, and boundary conditions.
Investigation of Cracking in Concrete Bridge Decks at Early Ages
1999年5月1日 · This paper includes a thorough investigation to identify the probable causes of cracking in reinforced concrete bridge decks, particularly at early ages. The objectives of the study were addressed through a literature review process and a comprehensive nationwide survey.
Bridge deck cracking: A field study on concrete placement, …
2012年9月1日 · The casting, curing, and cracking of five bridge decks were measured. Variations in early age compressive strength were observed in the concrete. Bridge deck with the highest compressive strength experienced the most cracking. Differences between 1 and 7 day compressive strength appeared to affect cracking. Variances in curing compound ...
Transverse Cracking of Concrete Bridge Decks: Effects of Design …
2005年9月1日 · This paper presents results of a comprehensive finite-element (FE) study of deck and girder bridge systems to understand and evaluate crack patterns, stress histories, as well as the relative effect of different design factors such as structural stiffness on …
Analysis, prediction, and case studies of early-age cracking in bridge …
2016年5月14日 · Numerous factors can affect transverse deck cracking in highway bridges including time-dependent material properties, restraints, casting sequence, formwork, and environmental factors. The aforementioned studies determined that span continuity, concrete strength, and girder type are the most important design factors influencing transverse cracking.