Results 41 to 50 of about 737,545 (271)

Concept, Tests, and Optimum Design of Novel Negative Stiffness Friction Dampers for Seismic Protection of Long‐Span Bridges

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Viscous dampers (VDs) are widely used to mitigate the excessive responses of long‐span bridges. However, VDs face some intricate challenges in engineering practices, including high damping coefficient requirement, potential base shear amplification and tremendous damping force under high velocity. To address these issues, this study develops a
Ruisheng Ma   +5 more
wiley   +1 more source

Performance analysis of strengthening reinforced concrete beams under pure torsion using galvanized steel sheets: Experimental and numerical investigation

open access: yesStructural Concrete, EarlyView.
Abstract Reinforced concrete (RC) beams can be subjected to torsion, and failure due to torsion is brittle and poses a significant risk to occupants. Moreover, strengthening of existing RC beams in torsion may be required due to the upgrade of the structures or as part of structural rehabilitation.
Ahmed Hamoda   +4 more
wiley   +1 more source

Joint deterioration detection based on field‐identified lateral deflection influence lines for adjacent box girder bridges

open access: yesStructural Control & Health Monitoring, 2022
As critical components that transmit internal forces laterally in multigirder bridges, joint degradation can destroy the cooperative working mechanism of a multigirder system and seriously reduce bridge bearing capacity.
Dong‐Hui Yang   +4 more
semanticscholar   +1 more source

Industrial Design and Economic Analysis of Steel Box Girder Bridge with Conventional Span

open access: yesZhongwai Gonglu
To improve the industrial construction level of steel bridges, a prefabricated continuous steel box girder bridge was designed in this study, which is suitable for bidirectional four lanes and six lanes with spans ranging from 40 m to 80 m.
CUI Bing, CHEN Kun
doaj   +1 more source

Impact of half‐joint failures on RC girder bridges: A robustness quantification study

open access: yesStructural Concrete, EarlyView.
Abstract The robustness of bridge structures is critical to ensuring safety and service continuity, particularly in aging infrastructure exposed to degradation and unexpected loads. Reinforced concrete (RC) half‐joint bridges—widely built in Italy between the 1950s and 1970s—exhibit specific vulnerabilities due to inspection challenges, durability ...
Paolo Martinelli, Matteo Colombo
wiley   +1 more source

Box girder bridge

open access: yes, 2021
The subject of this thesis is the design of a prestressed box girder construction with several spans. Two variants are designed and for detailed solving was chosen the variant of the box girder.
Vostal, Lukáš
core  

Static Wind Load Evaluation under Steady-State Wind Flow for 2-Edge Sloped Box Girder by Using Wind Tunnel Test

open access: yesAdvances in Civil Engineering, 2019
The two-edge box girder has been widely used as a stiffened girder in cable-stayed bridges. However, such girders have weakness in aerodynamic stability.
Hoyeop Lee, Jiho Moon
doaj   +1 more source

A novel composite thermal insulation system for concrete bridge box girder and its influence

open access: yesCase Studies in Thermal Engineering, 2022
The temperatures of a concrete box girder were observed through a field test, and the finite element method (FEM) model of the concrete box girder was established.
Weigang Sun, Yiqiang Li, Weigang Zhao
doaj   +1 more source

Buckling of Curved Webs in Steel Box Girders [PDF]

open access: yesIABSE Reports, 2018
<p>Today, bridge girders with curved flanges and webs are becoming more common in order to increase the aesthetic value and to improve the quality of the structure. Despite the use of these new shapes, not much research has been done in this field.
Van Staen, Gilles   +2 more
openaire   +2 more sources

Large‐scale tests of 50‐year‐old prestressed concrete bridge girders

open access: yesStructural Concrete, EarlyView.
Abstract An experimental investigation has been carried out as part of the BRIDGE|50 research project, focusing on large‐scale loading tests performed on five 50‐year‐old prestressed concrete (PC) girders. The study aimed at evaluating the structural response of five girders retrieved from a viaduct in the urban area of Turin, Italy, subjected to 4 ...
Francesco Tondolo   +7 more
wiley   +1 more source

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