Numerical Analysis of Dead Load Shear Force Distribution in Webs of Multicell Inclined Web Box‐Girder Bridge

Abstract

Moment and shear load distribution are important in bridge design. Most existing studies have focused on the distribution of girders under vehicle loading, neglecting the dead load distribution between the webs of multicell box-girders. Through the “Sum of Local Internal Forces” function, the shear force of each web in the multicell box-girder 3D finite element model was extracted and analysed using the dead load shear force distribution factor. The research parameters include the slope of the web, support condition, and cell number with respect to the dead load shear force distribution factor. The results indicate that the dead load shear distribution in the webs of multicell box-girders is uneven. The outermost inclined web bears a shear force greater than the average shear force, which must be considered in bridge design.

Flexural Behavior of Concrete Box Girders Reinforced with Mixed Steel and Basalt Fiber-Reinforced Polymer Bars

“…Yet, the failure manners of the hybrid RCB girders were additionally ductile than in the BFRP RCB girder BF. Moreover, it was found that the crack patterns and failure modes of RCB girders reinforced with mixed steel and BFRP bars in the current study agree well with the observations of many previous research studies carried out on solid RC beams [36]. Through the observations of the current study and the previous ones, it was found that the cracking spacing and width are controlled by the amount of steel and FRP reinforcements.…”

Some analyzes on box girders bridges - literature review

“…The dead load shear force i is calculated with the following expression [2]: In conclusion, the authors have established the next affirmations:  for the factor of shear force distribution, in the dead load, the cells number has a higher influence compared with support condition  the side web shear force considering the dead load exceeds a limit value and becomes dangerous for the bridge  the distribution factor of the dead load shear force stays unchanged in the elastic phase [2].…”

“…Box girder bridges are made up of several "box" type beams which by assembling them, the surface of a section of road is created. Box girder bridges are particularly widespread in cities mainly due to their attractive appearance [1,2]. First box girder bridge, named "The Sclayn", designed by Gustave Magnel, was created over the Mass River in Belgium in 1948.…”

“…Box girder bridges present a number of advantages such as: the fabrication of the girders is fast, they are lightweight, the fabrication costs are reduced, they have a good resistance at wind and torsion and they have an aesthetic constructive aspect, essential for the urban environment [2,7,8,9].…”

Shear Behavior of RC Beams Strengthened by External Vertical Prestressing Rebar

“…In this study, the total strain crack model, which has many good examples for analysing concrete structures [28][29][30], uses nonlinear three-dimensional finite element analysis (FEA) to model the shear strength concrete beams of EVPRs. e main objectives of this study are as follows:…”