نتایج جستجو برای: beam and slab bridge deck
تعداد نتایج: 16866920 فیلتر نتایج به سال:
Belitic calcium sulfoaluminate (BCSA) cement is a sustainable alternative to Portland that offers rapid setting characteristics could accelerate throughput in precast concrete operations. BCSA cements have lower carbon footprint, embodied energy, and natural resource consumption than cement. However, these benefits are not often utilized structural members due lack of specifications perceived l...
For this purpose a finite element model specifically developed for the nonlinear analysis of steel-concrete composite beams is adopted. This finite element model includes material nonlinearity of slab concrete, reinforcement steel, beam steel as well as slabbeam nonlinear partial interaction due to the deformable shear connection. The inclusion of the partial interaction in the composite beam m...
the vibration of cable-stayed bridges subjected to the passage of high-speed trains is studied in this article. the moving train includes a number of wagons, each of which is modeled as a four-axle system possessing 48 degrees of freedom. the car model is nonlinear and three-dimensional and includes nonlinear springs and dampers of primary and secondary suspensions, dry friction between differe...
Abstract The historic Port Weir Bridge over the Nidau‐Büren Canal in Canton of Bern, Switzerland, was inaugurated 1938. This multi‐purpose structure serves as an important road bridge, a mechanised weir, lock for canal boats, well hydroelectric power station. During inspections 2018, severe concrete damage and reinforcement corrosion were observed on this protected structure. Immediate temporar...
Link slabs designed for macroscopically crack free concrete bridge decks system were experimentally tested. The property requirements of the link slab material were considered. Special focus was placed on the fatigue and durability performance. Introduction of a ductile Engineered Cementitious Composite (ECC) material is proposed for its ability to control crack width and to exhibit high ductil...
Traditional GPR Surveys. High-speed GPR surveys have been performed for many years to map the condition of aging bridge deck structures. Most often, one or more 1.0 GHz horn antennas are driven along unique survey paths spaced anywhere from 3 to 4ft apart—and 2 to 3 GPR scans are collected along every linear foot of the deck surface that is being sampled. Surface dielectric properties, signal a...
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