The well-known limitations of modal system identification methods have led to a broad exploration alternative solutions for operational monitoring and damage diagnosis structures. This study presents time-domain Bayesian finite element model updating approach jointly identify the vehicular loads modeling parameters bridges using vibration data location vehicles traversing bridge as input. A is ...

Abstract An extradosed cable‐stayed bridge employs a structure that combines the main elements of both prestressed box girder and bridge. In to apply optimization, because this type has hybrid nature; bridges have significant additional complexity oversizing [7]. This research paper evaluated optimum depth with pylon height, angle stay cable, effect concrete grade on those three parameters an c...

The excessive deflection of large-span cantilever cast prestressed concrete (LCCPC) box girders has always been a complex problem to be solved in bridge engineering. To analyze the effect shear deformation at segmental joints on LCCPC girders, comparison tests were carried out three (PC) I-girders with and PC I-girder without joints, finite element simulation method was proposed based tests. Su...

The dynamic response of a prestressed concrete box girder bridge under the impact an over-height vehicle is studied using numerical simulation method. finite element analysis software LS-DYNA used to simulate collision between superstructure and truck. Further, parametric carried out investigate influence six factors, i.e., configuration, speed, mass, angle, strength strand prestress, on both l...

Different interpretations of the equivalent rectangular stress block approximation used by the American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) and AASHTO Standard Specifications may lead to inconsistencies in the sectional response of the prestressed concrete flanged sections predicted by the two specifications. According to t...

The paper is focused on assessment of existing prestressed concrete bridge by simplified methods for estimation coefficient variation. was selected in the framework European Project INTERREG AUSTRIA-CZECH REPUBLIC "ATCZ190 SAFEBRIDGE" advanced numerical analysis bridges represented non-linear finite element model. key ingredient semi-probabilistic design and structures an variation (ECoV). Rece...

Some of the advantages that results from the structural strengthening of concrete slabs using prestressed fiber reinforced polymer (FRP) systems are as follows: the prestressed FRP delays the formation and propagation of cracks, and both the serviceability and the flexural capacity are increased. In this research program, the flexural performance of a concrete slab strengthened with a three-sta...

Abstract The use of precast prestressed concrete bridge piers is rapidly evolving and widely applied. Nevertheless, the probabilistic behavior bending performance has often been overlooked. This study aims to address this issue by utilizing actual as engineering context. Through implementation Monte-Carlo simulation Gradient Boosted Regression Trees (GBRT) algorithm, stochastic distribution the...