复合式互通立交集散道交织区优化与安全评价  

Optimization and Safety Evaluation of Collector-distributor Road Connection Waving Area for Composite Interchange

作　　者：李璨 陈雨人[1] 邢小亮 LI Can;CHEN Yuren;XING Xiaoliang(Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China)

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804

出　　处：《公路工程》2018年第5期120-125,共6页Highway Engineering

基　　金：广东省交通运输厅科技项目(JP-YS-A09-2012-115)

摘　　要：将复合式互通立交集散车道交织区划分为4种不同车道功能的交织车道单元,并根据交织车辆强制性变道行为计算交织单元最小长度。基于交织车辆运行特性与交织区长度,采用进出车道均布的设计思路,提出交织区车道单元组合设计方案。针对常见速度下集散车道与进出匝道组合形式,以交通冲突率为安全评价指标,确定各自最佳交织优化方案。交织区优化方案有助于明确路权并有效改善集散车道交织区车辆行驶安全性,为集散车道连接的复合式互通立交布设方案的合理设计提供技术支持。The lanes in the weaving areaaredistributedinto four weaving lane units with different lane functions.The minimum length of the lane unit can be obtained according to mandatory lane changing behavior.Based on the characteristics of vehicle operation and the length of weaving area,different combination designs of traffic lane units are proposed in the way of even distribution.Using traffic conflict ratio as the road safety evaluation index,the optimal design of different weaving sections designs can be determined for common forms of collector-distributor Road and ramps with different design speeds.The optimization scheme can make clear the road right,effectively improve the safety of vehicles in theweaving area and provide technical support for the rational plan and design of the composite interchange connected with collector-distributor road.

关 键 词：复合式互通式立交 集散车道 集散车道交织区 交织优化 安全评价 

分 类 号：U412.35[交通运输工程—道路与铁道工程]