Propuesta de modificación del sobreancho mínimo requerido para el vehículo c3s2 en el diseño de vías en Colombia

Abstract

Overwidth in horizontal curves has been the subject of research over the last few decades by several influential national and international authors; In Colombia, particularly on the main roads along the territory, most of the incidents in curves happen because of the lack of expertise of the drivers or because of the lack of over width of the roads. This last factor is attributed to the inappropriate design in the calculation of additional road width of the roads, which has become a subject of constant research and concern for the different participatory entities, authorities, drivers and citizens in general; where one of the fundamental characteristics to have a safe road is the appropriate calculation of the over widths and to count on an optimal and functional geometric design. The objective of this study is to propose the minimum width required according to the C3S2 vehicle in horizontal curves for the design of roads in Colombia.

The development of the present research work is carried out by means of a research methodology based on the analysis of the information obtained after the execution of pilot tests and the continuous analysis of the data obtained in an analytical way after the application of the exposed formulations, the previous is carried out in three phases, thus; phase one, the collection and categorization: search and analysis of information. Phase two: Determination of the over-width; development of the mathematical expression that allows to evaluate the required over-width according to the variables already defined for the implementation of the over-width simulation software as for the use of the current regulations. And finally, phase three: Analysis of the results; determination of the over width and the elaboration of data tables of estimation of road widths suggested for the Colombian roads incorporating a proposal of technical specification to calculate the minimum over width required according to the investigation of the project and the elaboration of the academic tool and final document.

With the calculations obtained and the evidence found, an academic tool was developed using Microsoft Visual Studio 2019 software in the free community version for students and collaborators, which seeks to calculate the width based on the methodologies proposed in the research, allowing the designer to directly compare the values obtained from width and thus be able to make a more optimal geometric design and greater efficiency, safeguarding the safety of users and the viability of the project from the environmental area to see reduced cross section design.

It is recommended that a survey be made of the current vehicle fleet circulating in the national territory and that a file be evaluated for each vehicle in the section of semi-trailers with the real dimensions, since this factor affects the determination of the excess width required on the roads. Likewise, in future investigations it is suggested that this geometric variable (excess width) be evaluated for the new class of roads currently being built, Finally, it is proposed for future work that the academic tool presented be improved so that it can perform over-width calculations not only for large vehicles, but also for different types of vehicles, where the user can enter these characteristics and the software will produce the results.