Results 11 to 20 of about 8,075 (231)

Experimental Study on Reasonable Steam Curing Scheme of Prefabrication Box Girder

open access: yesAdvances in Civil Engineering
The assembly-line production mode was adopted to meet the production demands of prefabricated box girders for the Haiyan line. The steam curing method was introduced to accelerate concrete strength development, allowing the prestressing tension ...
Changpo Li, Chaoyu Zhu
doaj   +2 more sources

The Multi-Functional Modelling Shear Lag Method for Accurate Calculation of Static Response and Accordion Effect of Improved Composite Box Girders

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2023
The composite box girder with corrugated web and steel bottom plate (CW-SBS) is a kind of improved steel-concrete structures. The design of CW-SBS box girders needs the accurate method to calculate the working response and accordion effect in ...
Ya-Nan Gan, Zi-Chen Zhang, Gen-Hui Wang
doaj   +1 more source

Analysis of Pure Bending Vertical Deflection of Improved Composite Box Girders with Corrugated Steel Webs

open access: yesAdvances in Civil Engineering, 2021
Steel bottom plates are applied as replacements for the concrete bottom plates in order to reduce the dead weight of the composite box girders with corrugated steel webs and steel bottom plates (CSWSB).
Chi Ma   +3 more
doaj   +1 more source

Effect of Shear Deformation at Segmental Joints on the Short-Term Deflection of Large-Span Cantilever Cast Prestressed Concrete Box Girders

open access: yesBuildings, 2023
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.
Jie Liu   +3 more
doaj   +1 more source

Research Status of Structural Optimization Design, Materials, and Prestressing Techniques for PC Small Box Beams: A Review of Research Progress [PDF]

open access: yes预应力技术
Based on recent research findings and an analysis of the literature on Precast concrete (PC) small box girders, this paper presents a systematic discussion of the optimization design, materials, and prestressing techniques for PC small box girder ...
Fangyuan Li, Luda Li
doaj   +1 more source

Study on the Dynamic Response of Composite Box Girder Bridges with Corrugated Steel Webs

open access: yesAdvances in Civil Engineering, 2023
To more accurately consider the dynamic response of composite box girder bridges with corrugated steel webs under the effect of live loads, based on the theory of vehicle-bridge coupled vibration, a refined finite element model of vehicle-bridge coupled ...
Ya-Na Mao   +3 more
doaj   +1 more source

Stressing state characteristics of reinforcement concrete box-girders strengthened with carbon fiber reinforced plastic

open access: yesJournal of Civil Engineering and Management, 2020
This paper investigates structural performance of five reinforcement concrete (RC) box-girders under a combination loading of bending, shear and torsion, applying the structural stressing state theory.
Hengheng Xiao   +4 more
doaj   +1 more source

Prediction of vertical temperature gradient on concrete box-girder considering different locations in China

open access: yesCase Studies in Construction Materials, 2022
Since the bridges are subjected to complex environmental effects for a long period, it is important to have an accurate evaluation of vertical temperature gradient in box-girders for the assessment of the ambient thermal actions on the structure itself ...
Xingwang Sheng   +4 more
doaj   +1 more source

Fast 3D Pose Estimation Method for High Speed GMAW of Large Box Girders

open access: yesShanghai Jiaotong Daxue xuebao, 2022
In the process of high speed gas metal arc welding (GMAW), large box girder has many complex working conditions, such as positioning weld, low assembly accuracy, difficulty in strictly ensuring the pose of workpiece through tooling, real-time change of ...
LI Gaoyang, JIA Aiting, HONG Bo, LI Xiangwen, GAO Jiapeng
doaj   +1 more source

A new procedure for load-shortening and -elongation data for progressive collapse method

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2017
Progressive Collapse Method (PCM) has been broadly applied to predict moment-carrying capacity of a hull girder, however accuracy of PCM has not been much studied.
Jonathan Downes   +3 more
doaj   +1 more source

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