What is multiple-cell box girder, Civil Engineering

Assignment Help:

Q. What is Multiple-cell box girder?

Multiple-cell box girder: cells connected by top flanges vs. cells connected both by top and bottom flanges

When the depth of a box girder bridge exceeds 1/6 or 1/5 of the bridge width then it's recommended to be designed as a single cell box girder bridge. Though if the bridge depth is smaller than 1/6 of the bridge width then a twin-cell or multiple cell is a better choice. Though even for wider bridges with small depths, the number of cells must be minimized since there isn't much improvement in transverse load distribution when number of cells of box girder is increased to three or more. 

For multiple-cell box girders there are usually two arrangements. First one is that independent cells are connected by their top flanges only while other one is that the cells are connected both at the bottom and top flanges. From structural point of view it's recommended to adopt the second arrangement. For the case of cells connected by top flanges only, their flanges are heavily stressed in transverse direction owing to flexure that can't be effectively distributed across the cross section.

2180_What is Multiple-cell box girder.png

Fig. Box girder with cells connected by top flanges and cells connected both by top and bottom flanges.


Related Discussions:- What is multiple-cell box girder

Plane table, what is traversing plane table?

what is traversing plane table?

Important parts of road pavements, Important parts of road pavements: ...

Important parts of road pavements: Prime Coat : Application of a low viscosity bituminous binder over a granular base to fill up the voids. Tack Coat : Application of b

Deep foundation, At what places deep foundation are made?

At what places deep foundation are made?

Formation of holes in pipelines, Question While branch pipelines are co...

Question While branch pipelines are connected to pipelines, now and then Y-junctions or fitting branched pipelines to key pipelines by formation of holes in pipelines are u

Briefly explain the concept of wind-driven ventilation, Problem (a) Br...

Problem (a) Briefly explain the concept of wind-driven ventilation and outlines its benefits over mechanical/electrical means of ventilation. (b) Various factors and guidel

Explain the activitated sludge (aeration tank), Explain the Activitated Slu...

Explain the Activitated Sludge (Aeration Tank)? The activated sludge treatment process is a biochemical oxidation process. Organic solids are stabilized through the oxidation p

Rcc lintel, how to make a leakproof joint with existing lintel

how to make a leakproof joint with existing lintel

Concrete structure be entirely free of expansion joints, Question Would a c...

Question Would a concrete structure be entirely free of expansion joints and contraction ? Answer Consider that concrete structure is not subject to problem of disparity settlem

Methods of constructing roads in marshy areas, Methods of Constructing Road...

Methods of Constructing Roads in Marshy Areas: The following methods are adopted for constructing roads in marshy areas: (a) Removal of soft soil and replacement with good

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd