Geometric Improvements in the Horizontal Alignment and Vertical Profile of Lohapathar Ghat Section in Bhopal-Salkanpur Road using Autodesk Civil 3D Software

Abstract

Geometric highway design involves the creation of visible elements like horizontal alignment, vertical profile, cross-sectional features, sight distances, curves, and superelevation, all vital components in maintaining road safety. Concentrating on the stretch of road from Bhopal to Salkanpur, specifically the area around Salkanpur Ghat in Madhya Pradesh, India, this research aims to enhance the horizontal and vertical geometry using Civil 3D Software. Spanning approximately 1.860 km in hilly terrain, this section poses significant risks with sharp curves and steep vertical gradients ranging from 6.5% to 7%. These conditions contribute to its status as an accident-prone area, resulting in both physical and economic losses. The outputs demonstrate that both improved alignments have shorter lengths compared to the existing road, with smoother curves and reduced maximum gradients (5.3% compared to 7%). Moreover, the minimum design speed has significantly increased from 20 kmph to 65-80 kmph, indicating enhanced safety and efficiency for vehicular traffic.\"

Introduction

I. INTRODUCTION

Highway geometry elements are expected to be selected, sized and positioned in a way that satisfies such design criteria as sight distance, vehicle stability, driver comfort, drainage, economy, and aesthetics. The road design procedure using AutoCAD Civil 3D has been presented. Manual geometric design of the same road was also performed, the results of which was compared favourably with that of AutoCAD Civil 3D.

Objectives of the project-

1. To study the various geometric features of road.
2. To design geometric features by using civil 3D Software.
3. To determine safe geometric features of a road to minimize the accident rate.

II. STUDY AREA LOCATION-

The study area is located in Sehore district Ichhawar taluka, the project road start from Bhopal to Salkanpur road. Length of stretch is 2.8 km. Project area passes through Hilly and Mountainous terrain. Existing study area consists of asphalt road and Soil Road. The alignment comprises of significant Sharpe horizontal curves which would require geometric corrections

III. DATA COLLECTION

Gathering information and systematically analysing data from a survey conducted within the study area to gain a comprehensive understanding of the chosen area. This process enables thorough evaluation of outcomes and responses to research inquiries.

A. Surveying

Data from reconnaissance surveys are typically used to plan detailed surveys and investigations, aiding in the selection of potential alignments for alterations or adjustments. During preliminary surveys, survey specialists utilize total stations to gather essential data such as latitude, longitude, elevation, and other necessary measurements along proposed alternate alignments. Finally, the centreline of the ground is determined during the final location survey.

Conclusion

The objective of the study was to improve the horizontal alignment and vertical profile of the Salkanpur Ghat Section along the Bhopal-Kolar Dam-Salkanpur Highway in Madhya Pradesh, following IRC recommendations. The project aimed to implement two enhancements to the current roadway in line with IRC guidelines, while also addressing high-risk zones for accidents.

References

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Copyright

Copyright © 2024 Ajay Kumar Gawande, Dr. Bablu Kirar . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.