互通式立交工程线形设计  

The Alignment Design of Interchange Engineering

作　　者：伍奇 WU Qi(Beijing Jianda Road and Bridge Consulting Co.,Ltd.,Beijing 100020,China)

机构地区：[1]北京建达道桥咨询有限公司,北京100020

出　　处：《工程技术研究》2025年第1期193-195,共3页Engineering and Technological Research

摘　　要：互通式立交工程在确保道路无障碍通行方面发挥着重要作用,其线形设计已成为众多学者研究的重点内容。互通式立交工程的匝道类型包括三岔式和四岔式等,而在实际工程中,匝道类型的选择主要需要考虑交通流量、通行能力及线形设计等因素。在进行互通立交安全性能评价时,必须综合考量众多相关因素,如未来车流量的发展趋势和匝道的最优设计等。文章以某互通立交项目为例,探讨了主线与匝道的设计要点,包括主线优化设计、匝道优化设计,以及匝道分、合流段线形设计。Interchange engineering plays an important role in ensuring the barrier-free access to roads,and its alignment design has become the focus of many scholars.The ramp types of interchange engineering include three-way type and four-way type,etc.In practical engineering,the selection of ramp types mainly needs to consider factors such as traffi c fl ow,traffi c capacity and alignment design.When evaluating the safety performance of interchanges,many relevant factors must be considered comprehensively,such as the development trend of future traffi c fl ow and the optimal design of ramps.Taking an interchange project as an example,this paper discusses the key design points of the main line and ramp,including the optimization design of the main line,the optimization design of the ramp,and the alignment design of the split and confl uence sections of the ramp.

关 键 词：互通立交 匝道设计 主线优化 分流线形 

分 类 号：U412.3[交通运输工程—道路与铁道工程]