Analysis and Design of Box Culvert

Pedada Leela Krishna

CALL FOR PAPERS : Mar-2023

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25-Mar-23

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Analysis and Design of Box Culvert

Author(s):

Pedada Leela Krishna , ANDHRA UNIVERSITY

Keywords:

Staad pro, Mat lab, Excel Sheet

Abstract:

Box Culverts are required to be provided under earth embankment for crossing of water course like streams, Nallas across the embankment as road embankment cannot be allowed to obstruct the natural water way. The culverts are also required to balance the flood water on both sides of earth embankment to reduce flood level on one side of road thereby decreasing the water head consequently reducing the flood menace. Culverts can be of different shapes such as arch, slab and box. These can be constructed with different material such as masonry (brick, stone etc) or reinforced cement concrete. Since culvert pass through the earthen embankment, these are subjected to same traffic loads as the road carries and therefore, required to be designed for such loads. The size, invert level, layout etc. are decided by hydraulic considerations and site conditions. The cushion depends on road profile at the culvert location. The structural design involves consideration of load cases (box empty, full, surcharge loads etc.) and factors like live load, effective width, braking force, dispersal of load through fill, impact factor, co-efficient of earth pressure etc. Relevant IRC Codes are required to be referred in the analysis and design of box culverts. The aim of this project is to model and analyse the box culvert using STAAD PRO software. This software is an effective and user friendly tool for three dimensional model generation, analysis and multi material design. The results obtained from STAAD PRO are compared with the manual calculations obtained using MATLAB. The structural elements of box culvert are designed to withstand maximum bending moment and shear force. The results obtained from STAAD are almost similar to manual calculations.