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Abstract

The terrain and geological environment in mountainous areas are complex, and facilities such as interchange service areas have high requirements for the sites, which makes it very difficult to develop schemes in complex terrain and geological conditions. This paper took the Jinkouhe Interchange Complex of the Emeishan-Hanyuan Expressway as an example to analyze the site selection rationality of the complex from the perspectives of bridge and tunnel distribution and terrain conditions. Meanwhile, by combining the study of the main line location, the complex's layout was improved by shortening tunnels and increasing the length of the open lines. Based on the terrain, traffic organization, and implementation difficulty, the comprehensive scheme comparison and selection was studied to determine the recommended scheme. From the aspects of vehicle driving, driving recognition, and ramp layout improvement for functional services, this paper facilitated the integration of the complexes in interchange service areas to adapt to both the complex terrain and geological environment of mountainous highways and the characteristics of the high bridge-tunnel ratio, and meet the functional needs of connecting local areas and serving for transportation.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2023.06.054

First Page

350

Last Page

353

Submission Date

March 2025

Reference

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