Results 181 to 190 of about 10,188 (227)

Thermal Effects on Box Girder Concrete Bridges

Key Engineering Materials, 2017
Thermal load, especially vertical temperature gradient, is an important factor that should be considered during the bridge design procedure. In the world, several researches focusing on temperature gradient was made, mostly in USA and China, but only a few analyzed actual temperature gradients measuring at European bridges.
Martin Moravcik, Lukas Krkoska
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Strengthening Concrete Box Girder Bridges

Journal of Structural Engineering, 1990
There is, at a theoretical level, a direct relationship between the effects of prestressing, temperature, support settlement, and creep redistribution in concrete box girder bridges. At a more practical level, the net effect of thermal gradients or creep redistribution is to impose a positive secondary moment onto the structure, which can be balanced ...
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Prefabrication of concrete box girder bridges

1991
The technologies described in this paper allow the construction of prestressed concrete bridges, precast in a monolithic form both for simply supported and continuous beams. It combines durability, speed of construction and economy. Particular reference is made to construction of a viaduct with a continuous box girder deck under construction in a ...
Gallo, Pellegrino C., Nati, Gabriele
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Ultimate Strength of Concrete Box Girder Bridge

Journal of the Structural Division, 1974
Results obtained in a study of a large-scale, two-span, four-cell reinforced concrete box girder model are presented. The model, which was a 1:2.82 scale replica of a prototype, had overall plan dimensions of 72 ft (21.14 m) long by 12 ft (3.66 m) wide.
Jack G. Bouwkamp, Alexander C. Scordelis, S. Tanvir Wasti   +2 more
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Bridge information models for construction of a concrete box-girder bridge

Structure and Infrastructure Engineering, 2012
Large construction projects involve collaboration among a large number of participants with different specialised knowledge from various construction processes. A readily accessible bridge information model is needed to enable engineers to innovate prefabricated bridge construction.
K. M. Lee, Y. B. Lee, C. S. Shim, K. L. Park   +3 more
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Assessment and identification of concrete box-girder bridges

IABSE Reports, 2019
<p>This work consists in identify and assess the properties related to material, geometry and physic sources, in a pre-stressed concrete bridge through a surrogate model. The use of this mathematical model allows to generate a relationship between bridge properties and its dynamic response, with the purpose to develop a tool to predict the ...
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Approximate Analysis of Concrete Box Girder Bridges

Journal of Structural Engineering, 1988
The purpose of this paper is to show that the actual three-dimensional behavior of a box-girder bridge as predicted by a folded-plate, finite-strip, or finite-element analysis can be approximated by using some simple membrane equations in conjunction with a plane-frame analysis.
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Different Techniques for the Modeling of Concrete Box Girder Bridges

IABSE Reports, 2009
<p>This paper presents a comparison between response of post-tensioned concrete box-girder bridges analyzed by using different modeling techniques. Each type of modeling technique requires a certain set of assumptions to simplify the problem and thus results obtained from these techniques vary according to the assumptions made.
Jimmy Chandra, Naveed Anwar, Deepak Rayamajhi   +2 more
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Steel–Concrete Composite Box Girder Bridges

1999
This chapter focuses on straight steel–concrete composite box-girder bridges. A single box girder with multiple cells is economical for very long spans. Multiple webs reduce the flange shear lag and also share the shear forces. A composite box section usually consists of two webs, a bottom flange, two top flanges and shear connectors welded to the top ...
Yusuf Saleh, Lian Duan
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Load Testing of a Deteriorated Concrete Box Girder Bridge

Advances in Structural Engineering, 2002
This paper reports on load testing of a continuous three cell concrete box girder bridge. The bridge is non-prismatic, curved in plan, and has skewed supports. The bridge is over thirty years old, and it was designed with a construction joint between two continuous spans and a span with a cantilever. The tests were carried out to evaluate the cause of
Jun Yang, John T DeWolf
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