Articles tagged with Bridge Construction
University of Warwick engineers led an international committee to update Eurocode 4, a standard for composite steel and concrete structures used in buildings and bridges. The updated standard introduces new guidance for modern construction techniques and advances the design of shear connections.
Researchers at the University of Plymouth have discovered a method to increase muon lifetime using intense laser pulses. By applying quantum interference principles, they aim to develop new scientific facilities that utilize muons instead of electrons.
Researchers develop a novel integrated data model that merges construction and geospatial information standards to manage bridges' 3D geometry data and maintenance records. This framework enables accurate damage location assessment, repair prioritization, and predictive maintenance, leading to improved infrastructure safety and longevity.
Professor Dan M. Frangopol, Lehigh University's inaugural Fazlur R. Khan Endowed Chair, was recognized for his work on life-cycle civil engineering at the 21st International Probabilistic Workshop in Germany. He is widely credited with establishing this field and has authored over 500 peer-reviewed journal articles.
Dan M. Frangopol, a pioneer in life-cycle civil engineering, has been recognized by the International Association of Structural Safety and Reliability (IASSAR) for his sustained service to the organization. He is the inaugural recipient of the Distinguished Service Award, established in 2013.
The study focuses on developing design provisions for using headed reinforcement in bridge structures, reducing construction time and costs. Full-scale experimental testing is underway at the Center for Infrastructure Renewal's High-Bay Laboratory.
The authors introduce advanced methodologies for integrating maintenance strategies and structural health monitoring to extend infrastructure service life. Topics include data-driven decision-making, multi-objective optimization, cost-benefit analysis, and the role of data analytics in managing uncertainties.
Devin Harris and his team have developed an augmented reality app, STRUCT-AR, that allows students to 'stress test' virtual bridges, beams, frames, and trusses. The app, which is set to be tested this spring, aims to improve students' understanding of structural behavior by providing a more interactive and immersive learning experience.
The National Science Foundation has awarded Wavelogix a two-year, $999,910 Small Business Innovation Research (SBIR) Phase II grant. The funding will help the company develop a complete solution for scaling up production of its REBEL concrete strength sensors, enabling faster and data-driven decisions in construction engineering.
A new national standard approved by AASHTO COMP uses Purdue-developed sensor technology to provide real-time data on concrete strength, potentially saving states and contractors time and money. The method aims to reduce uncertainty in determining when concrete pavement is strong enough to handle heavy truck traffic.
Researchers at Texas A&M University have developed a method of monitoring infrastructure using Synthetic Aperture Radar (SAR) remote sensing systems. This technology allows for early detection of issues, reducing the need for time-consuming repairs.
A team from Pohang University of Science & Technology has developed a memory transistor that can adjust its threshold voltage through photocrosslinking. The innovation combines two molecules with a polymeric semiconductor to form a stable bond, enabling precise control of the semiconductor layer's structure.
A new machine learning approach combines computer vision with deep-learning algorithms to pinpoint problem areas in concrete structures. The system enables efficient identification and inspection of cracks using autonomous robots, reducing the overall inspection workload.
Researchers developed a luminescent material that reveals concrete deterioration when exposed to ultraviolet light. The material's color change indicates the amount of carbonate absorbed, allowing for real-time detection of degradation.
UBC Okanagan researchers have developed sensors that can detect erosion and breaches in protective coatings, reducing inspection time and error risk. The AI-enabled sensors can also distinguish individual layer erosion within multi-layer coatings, enabling proactive monitoring and addressing of equipment degradation.
Researchers develop AI-based method to quantify cracking patterns in reinforced concrete structures, enabling more accurate and efficient assessments of structural damage. The approach uses graph theory and machine learning algorithms to create a unique 'fingerprint' for each set of cracks, allowing for quick and consistent evaluations.
M.A.R.V.E.L.'s magnetic soles made of Electro-Permanent Magnet (EPM) and Magneto-Rheological Elastomer (MRE) enable fast movement on uneven surfaces. The robot can climb at speeds of up to 70 cm/s on walls and 50 cm/s on ceilings, making it the world's fastest walking climbing robot.
Researchers at Shibaura Institute of Technology develop a fast and reliable method to detect defects in concrete structures using laser-induced plasma shock waves. The technique analyzes vibration patterns to identify Rayleigh waves, which can reveal the presence of cracks.
Researchers developed a new technique using radar altimetry to measure river ice thickness and predict safe travel dates on ice roads and bridges in arctic regions. This method can help sustain the network of ice roads built on frozen lakes and rivers, critical for northern communities' food security.
A new paper explores the impact of bridge construction on manatee populations, highlighting entanglement risks and habitat destruction. DISL researchers offer best practices to reduce negative effects.
Bottlenose dolphins adapted to coastal construction by shifting feeding locations and behavior timings, but these changes persisted after construction. Human activities like dredging and pile driving cause significant stress and harm to marine wildlife, emphasizing the need for conservation policies.
A team of researchers has proposed a new composite foundation system using inexpensive polymeric materials to protect structures sitting on deep foundations. The novel technique uses geotextile layers to isolate the building from the ground, reducing impact of large ground deformations due to fault rupture.
A recent study using radiocarbon dating and microarchaeology has pinpointed the construction dates of Wilson's Arch on Jerusalem's Temple Mount to between 20 BC and 60 AD during Herod the Great's reign. This new timeline resolves a long-standing debate about the entrance to the holiest site in Jerusalem.
Researchers at University of Technology Sydney developed a novel ground anchor technology to protect bridges against catastrophic earthquakes. The system uses high-tensile capacity steel cables, embedded into the ground behind the bridge, to deliver incredible strength and energy dissipation.
Researchers will conduct baseline studies on stream morphology and aquatic habitats before bridge construction and develop predictive models for Texas Department of Transportation. They aim to determine the downstream ecological impacts of bridge construction on freshwater mussels and assess floodwater's force on typical bridges.
UTA researcher Sharareh Kermanshachi is studying the risks of Texas and Louisiana transportation projects. She will develop best practices for construction inspectors and establish a knowledge-sharing framework.
The Center for Integration of Composites into Infrastructure (CICI) will examine ways to use polymers in infrastructure construction, reducing maintenance and carbon footprints. Researchers aim to develop cost-effective, sustainable structures with improved outcomes over the next three years.
A 70-foot-long, 52-ton concrete bridge survived multiple simulated earthquakes in the University of Nevada, Reno's lab, exceeding design standards. The experiment showcased the new rocking bridge-bent accelerated bridge construction system, developed to reduce earthquake damage and speed up construction.
Researchers have developed a new bridge design that uses pre-fabricated columns and beams to improve earthquake resistance, reduce damage, and speed up on-site construction. The system achieves faster construction by shipping pre-fabricated components to the site, where they are erected quickly.
A new study by Canadian researchers aims to dispel the myth of Murphy's Law by showing that human error can be minimized through rigorous testing and analysis. By implementing checks and balances, industries can improve reliability and safety, reducing the likelihood of catastrophic failures.
A 110-foot long, 200-ton concrete bridge model at the University of Nevada, Reno withstood a powerful earthquake simulation three times more intense than the 1994 Northridge quake. The design and components passed the test with 10 inches of deflection in support columns, remaining standing.
The University of Minnesota's study found that the original design and additional weights from construction materials put too much stress on the bridge. The researchers concluded that the gusset plates were in a state of instability, which led to their collapse.
Researchers at the University of Pennsylvania School Medicine have created a three-dimensional neural network that can be transplanted to bridge spinal cord lesions. The construct, designed to mimic the longitudinal arrangement of the spinal cord, integrates with host tissue and maintains its geometry after transplantation.
Researchers at the University of Wisconsin-Madison have developed a novel fiber-reinforced polymer (FRP) grid system for bridges, boasting advantages over traditional steel rebars. The FRP grid system boasts durability that can last at least 75 years and eliminates weeks of labor-intensive work.
Bechtel is collaborating with INEEL to test and develop critical infrastructure, including process control and SCADA systems. The partnership aims to provide scalable and secure testing capabilities for government and industry.
Researchers at Newcastle University are using satellites to measure 'bouncing' landscapes, which can affect the accuracy of large construction projects. The study aims to improve the accuracy of surveying data by 10 times, reducing costs by a significant margin.
A study by Richard Weyers predicts that the US bridge transportation system alone will require a trillion dollar investment. The expert warns that epoxy-coated reinforcing steel is prone to corrosion, especially when used in saltwater environments.
Researchers at Case Western Reserve University have developed a technique to simulate various gravitational environments using a magnetic levitation method. This allows them to study the behavior of liquids and solids in conditions ranging from Earth's gravity to zero-G environments, providing new insights into fluid dynamics.
Researchers at the University of Illinois have developed visual inspection procedures to assess corrosion damage in deck beams, evaluate the remaining service life of bridges, and identify potential safety risks. The new standards aim to improve public safety by reducing the need for premature bridge replacements.
Researchers have identified two new grouts for bonded post-tensioning applications, which may increase the service life of bridges up to twice as long. The grouts, with specific water-cement ratios and admixtures, can prevent corrosion in coastal and inland environments.
Computer scientists at Brandeis University have successfully designed and built various LEGO structures, such as bridges and cranes, without human input. The team's program uses a trial-and-error approach to optimize designs based on simple optimization goals, laying the groundwork for robots capable of reworking their own hardware.
Researchers at New York University have successfully constructed a machine from synthetic DNA molecules, featuring two rigid arms that can be rotated between fixed positions. This achievement marks a significant step towards developing nano-robots and molecular manufacturing capabilities.
The University of Cincinnati engineers have created a unique high-performance concrete (HPC) mix that significantly strengthens conventional concrete. Tests show the HPC can last up to 80 years without major maintenance due to its denser material and resistance to freeze-thaw cycles.