Results 101 to 110 of about 37,069 (262)

Accelerated optimization method for low-embodied energy concrete box-girder bridge design

open access: yesEngineering structures, 2019
Structural optimization is normally carried out by means of conventional heuristic optimization due to the complexity of the structural problems. However, the conventional heuristic optimization still consumes a large amount of time.
V. Penadés-Plà   +2 more
semanticscholar   +1 more source

Cracking and tension field action in composite beams [PDF]

open access: yes
Two aspects of the behaviour of uncased composite 'T' beams of steel and concrete are considered. Flexural cracking in the reinforced concrete slab was studied by subjecting seven 350-mm deep composite beams to hogging bending moment.
Allison, Robert William
core  

Reliability Analysis of Prestressed Concrete Box Girder Bridges in California

open access: yes, 2021
Truck traffic increases day by day according to the economy. Road network infrastructure has to meet this growing demand. This work focuses on prestressed concrete box girder bridges in California, because many signs of deterioration, such as cracks ...
Kouame, Andrea Noelly
core  

Transverse Analysis of Box Girders with Corrugated Steel Webs

open access: yesBuildings
The utilisation of box girders with corrugated steel webs (CSWs) represents an innovative approach to bridge superstructure design that has garnered substantial popularity worldwide, with a notable prevalence in both Asia and Europe.
Fen Xu   +3 more
doaj   +1 more source

Optimization of Post-Tensioned Box Girder Bridges with Special Reference to Use of High-Strength Concrete Using AASHTO LRFD Method

open access: yesAdvances in Civil Engineering, 2012
With the Federal Highway Administration-mandated implementation of the LRFD specifications, many state departments of transportation (DOTs) have already started implementing LRFD specifications as developed by the AASHTO.
Byungik Chang   +3 more
doaj   +1 more source

Thermal gradients in concrete box girders

open access: yes, 2020
In this study, a three dimensional thermal analysis using the Finite Element method was carried out to assess the heat conduction in deep concrete box-girder bridges taking in to accountthe prevailing conditions like ambient temperature, solar radiation incident and the velocity of the wind.
openaire   +1 more source

Numerical simulation investigation on hydration heat temperature and early cracking risk of concrete box girder in cold regions

open access: yesJournal of Traffic and Transportation Engineering, 2023
Shi Han   +4 more
semanticscholar   +1 more source

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