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以高速公路互通式立交主线同侧连续合流形式为研究对象,通过对大小型车的加速特性进行分析,并基于可插入间隙理论,确定了不同匝道车道数车辆汇入主线的加速车道模型;然后通过分析驾驶员操作规律,考虑反应距离、决策距离、换道或减速距离3个方面的需求,建立了主线车辆与下游匝道汇入车辆间安全视距模型;最后确定以小型车为研究对象的加速车道长度值与换道模型确定的安全视距值之和,建立高速公路主线同侧连续入口最小间距计算模型,并提出了基于主线和匝道设计速度、入口匝道车道数的高速公路主线同侧连续入口最小间距指标值。研究成果是对我国有关规范和设计细则的完善和补充。
Taking the same-side continuous merging mode of expressway interchange main line as the research object, the acceleration characteristics of large and small vehicles are analyzed and the acceleration lane model with different ramp lanes entering the main line is determined based on the insertable clearance theory. Then, By analyzing the operation rules of drivers and considering the demand of reaction distance, decision distance, lane change or deceleration distance, the safety sight distance model between the main line and the downstream ramp was built. Finally, the small vehicle was selected as the research object Speed lanes and lane-change model to establish the minimum distance calculation model for the same-side continuous entrance of the expressway main line, and put forward the calculation method of the minimum distance between two adjacent expressways based on the main line and ramp design speed and the number of entrance ramp lanes, Continuous entrance minimum spacing index value. The research results are the improvement and supplement to the relevant norms and design rules in our country.