摘要
研究目的:在隧道口附近的枢纽互通式立交方案规模大,造价高。本文通过实例互通式立交项目进行各种方案的研究,分析其通道、走廊以及平、纵断面和集中、分点设置的可行方案,为复杂条件下隧道口附近的立交方案设计开阔一条思路,以供高等级公路勘察设计与施工参考。研究结论:(1)在隧道口附近的枢纽互通式立交设计时应重点把握主要控制因素,避免遗漏重大方案;(2)深入调查研究和分析论证,首先结合既有控制物选择主线平面位置方案;(3)合理调整主线纵断面高程,以确定互通范围的高程;(4)对比集中设置互通方案与分点设置互通方案的工程比选;(5)最后通过点位互通的多种型式的工程认真筛选,不断优化,设计出安全、功能完善、规模恰当、同时与环境相融合的最佳方案;(6)本研究成果能够为复杂条件下隧道口附近的高速公路的立交方案设计提供指导作用。
Research purposes： The construction of terminal interchange near tunnel portal often is a large - scale and high -costing project. Based on completed terminal interchange programs, this article makes a detailed analysis about the feasibility of their planning about channel, corridor, plane and profile section, and centralized and uncentralized setting, to find a new way for the construction of terminal interchange near complex - conditioned tunnel portal, to provide reference for high grade highway survey, design and construction. Research conclusions： （ 1 ） In a planning of terminal interchange near tunnel portal, importance should be attached to major controlling factors, avoid missing important programme. （2） It is necessary to further investigate and analyze, first of all, combined with the existing control choose main plane position scheme. （3） Reasonably adjust the main line longitudinal section elevation, to determine the interchange＇s elevation scope. （4） Compare and select centralized and uneentralized setting interchange scheme. （5） By carefully selecting and continuous optimization, we can work out the best program that can provide us safety, functional perfection, scale -suitability, and environmental harmony. （6） The research results can provide a good guide for interchange program design near tunnel portal under difficult conditions.
出处
《铁道工程学报》
EI
北大核心
2014年第12期72-76,共5页
Journal of Railway Engineering Society
