Development of Comprehensive Tool for The Structural Analysis, Design, And Detailing of Buried Box Culverts
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Date
2023-06
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Addis Ababa University
Abstract
Box culvert design currently involves using a minimum of three software programs, including Microsoft Excel for load determination and structural analysis tools such as CSI SAP or MIDAS CIVIL for determining action effects. AutoCAD is then used for structural detailing. This approach can lead to project delays and an increased likelihood of mistakes.
Furthermore, the current design approach uses a two-dimensional plane frame model that assumes beam elements are centered in concrete members and that the model is externally supported by pinned and roller supports, resulting in uneconomical designs that may compromise safety. Moreover, the ERA standard drawing has restrictions that do not account for all potential culvert sizes and fill heights.
To address these issues, this research proposes a comprehensive software solution for structural analysis, design, and detailing of box culverts. The proposed software enables designers to analyze and design box culverts of any size and fill height while accounting for vertical displacement of the foundation soil using spring modeling. This approach streamlines the design process, saving time and increasing accuracy, while also improving safety.
The software program developed in this research is a web application. As a result, users can easily access the software from any location at any time, using any device with an internet connection, without the need for installation.
Design charts have been developed to illustrate how the bending moment varies at different locations for various opening sizes of a culvert. This is achieved by varying the fill height and number of openings.
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Keywords
Structural Analysis, Buried Box Culverts, Design, Detailing