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In case if concrete box girder bridges how is the number of cells determined?

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Question added by Salma Fakih , Architect , -
Date Posted: 2017/01/04
Abdul hamid Alzabadi
by Abdul hamid Alzabadi , مهندس مدني , شركة الشام للمقاولات

Thanks for your invitattion

i thing this is repeated quision

Athough this not in my specialist and after i read: 

But the princible to carry the wieght load from a point inidefference as to whether the pending moment in positive and negative forc to there torsional stafness from the point of view of economy.

When the depth of a box girder bridge exceed 1/6th or 1/5th of the bridge width then the design recommended is that of a single cell box girder bridge. But in case the depth of the bridge is lower than 1/6th of the bridge width then a twin-cell or in some cases multiple cell is the preferred choice. One should also note that even in the cases of wider bridges where there depths are comparatively low the number of cells should be minimized. This is so as there is noticeably not much improvement in the transverse load distribution when the number of cells of the box girder is higher than three or more.

 

مرسي احمد مرسي العريني
by مرسي احمد مرسي العريني , مدير مشروع إنشائي , ابناء سليمان القضيبي للمقاولات

thanks for the invitation

I agree with the answer colleague Eng / hisham abu dagga

Sadeq Al-Abbad
by Sadeq Al-Abbad , Service Specialist , Halliburton Energy Services Inc

l agree with hisham answer

hisham abu dagga
by hisham abu dagga , Project Manager / مدير مشاريع , مؤسسة عبدالكريم العواض للمقاولات

When the depth of a box girder bridge exceed 1/6th or 1/5th of the bridge width then the design recommended is that of a single cell box girder bridge. But in case the depth of the bridge is lower than 1/6th of the bridge width then a twin-cell or in some cases multiple cell is the preferred choice. One should also note that even in the cases of wider bridges where there depths are comparatively low the number of cells should be minimized. This is so as there is noticeably not much improvement in the transverse load distribution when the number of cells of the box girder is higher than three or more.

mahmood kheder
by mahmood kheder , مدير القسم الفني وحاصل على درجة الاستشاري من نقابة المهندسين , alliba

Thanks for your invitattion

i thing this is repeated quision

Athough this not in my specialist and after i read: 

But the princible to carry the wieght load from a point inidefference as to whether the pending moment in positive and negative forc to there torsional stafness from the point of view of economy.

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