In this investigation an elastic stress analysis is carried out a woven steel fiber reinforced thermoplastic cantilever beam loaded uniformly at the upper surface. The composite beam material consists of low density polyethylene as a thermoplastic (LDFE, f.2.12) and woven steel fibers. Granules of the polyethylene are put into the moulds and they are heated up to 160°C by using electrical resis...

Abstract: A new reinforced SFRFLC (abbr. steel fiber reinforced full-lightweight concrete) superposed beam was proposed to sufficiently utilize the good peculiarities of ordinary concrete in compression and SFRFLC in tension, and reduce its self-weight. Experimental study was carried out on the flexural behaviors of reinforced SFRFLC superposed beams compared with reinforced concrete beams and ...

Bridge designs are becoming slender and lighter, making wind dynamic effects even more important than static effects. Some types of bridges show especially vulnerable situations during construction stages, when the structure is lighter or does not have its final stiffness. The aim this document to assess loading on simple girder their phases. studied section formed by two steel beams supporting...

Soil scour near a bridge pier foundation is one of the leading causes failures. Traditional vibration-based monitoring methods are nearly incapable quantifying levels using single acceleration response without knowledge excitation information. In this paper, new output-only level prediction method introduced via integration an unscented Kalman filter (UKF), random decrement (RD), and newly deri...

Geometric nonlinearity of self-anchored cable-stayed suspension bridges is studied in this paper. The repercussion of shrinkage and creep of concrete, rise-to-span ratio, and girder camber on the system is discussed. A self-anchored cable-stayed suspension bridge with a main span of 800 m is analyzed with linear theory, second-order theory, and nonlinear theory, respectively. In the condition o...

Abstract To study the problems of frequent omissions and false alarms in early warning system due to defects safety assessment method (SAM) existing bridge health monitoring systems (BHMS). In this paper, current evaluation methods BHMS are deeply studied through fuzzy comprehensive derive a new type SAM based on vector. At same time, combined with concept membership function, result vector is ...

60 A practical approach to the optimal design of precast, prestressed concrete highway bridge girder systems is presented. The approach aims at standardizing the optimal design of bridge systems, as opposed to standardizing girder sections. Structural system optimization is shown to be more relevant than conventional girder optimization for an arbitrarily chosen structural system. Bridge system...

Various theories and analytical formulations were implemented exploited in the 1980s 1990s for design of bridge beams or decks curved horizontal plane subjected to out-of-plane loads. Nowadays, Finite Element Method (FEM) is a valid tool analysis structures with complex geometries and, therefore, development sophisticated not needed anymore. However, they are still useful validation FE models. ...

this article considers the seismic behavior of beam-to-column joints in steel frames for different bolt arrangements by using of finite element modeling. as the most important beam-to-column joint type, the beam-to-column joints with end-plate is chosen for the analysis. four different specimens have been analyzed. these models had some differences such as bolt arrangement and the presence or a...