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首页> 外文会议>Transportation Association of Canada (TAC) conference exhibition >Challenges in Designing Pavements for Bus Rapid Transit Projects Experience in York Region, Ontario
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Challenges in Designing Pavements for Bus Rapid Transit Projects Experience in York Region, Ontario

机译：在安大略省约克地区，为快速公交项目体验设计路面的挑战

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There are a number of challenges that require careful planning, investigation and design when adopting existing heavily travelled arterial roads to accommodate Bus Rapid Transit (BRT) lanes. These include the widening/strengthening old deteriorated pavements, staging, grade raises, as well as Agency requirements related to extended service lives, timing rehabilitation to coincide with that on adjacent lanes, coloured pavements, to name a few. A section of Yonge Street in York Region that was originally built as a concrete pavement was subsequently realigned, overlain with asphalt and granular materials (the concrete was buried) and widened using flexible pavements. When designing the BRT lanes, one of the main challenges was to identify the locations where buried concrete could be encountered when excavating for the widening. Other challenges included variable pavement structures, and identifying the areas that require major strengthening/reconstruction to support the additional bus traffic. On Highway 7, also in York Region, the proposed BRT will use the existing median lanes with the road platform widened to accommodate new outside lanes. The challenge was to design a pavement structure for the widening that can have its service life significantly extended so as to minimize down time due to future maintenance activities. In addition, the rehabilitation work on the BRT lanes in the existing median and the outside lanes designed to have a long service life had to be synchronized. Red coloured or brick pavement was stipulated for the BRT lanes to differentiate them from the adjacent general traffic lanes. This paper summarizes the results of the field investigations which also included Ground Penetrating Radar (GPR) and Falling Weight Deflectometer (FWD) load deflection testing as well as the innovative pavement designs developed to address the design challenges.
机译：在采用现有的人流量大的主干道以适应快速公交（BRT）车道时，存在许多挑战，需要仔细规划，调查和设计。这些措施包括加宽/加强旧的恶化的人行道，过渡，坡度提高，以及原子能机构与延长使用寿命相关的要求，以与相邻车道，彩色人行道上的重整相符的时间进行重整，仅举几例。约克地区的Yonge街最初由混凝土路面建成的部分随后进行了重新排列，覆盖有沥青和粒状材料（混凝土被掩埋），并使用柔性路面加宽。在设计BRT车道时，主要挑战之一是确定在开挖进行拓宽时可能遇到埋入混凝土的位置。其他挑战包括可变的人行道结构，以及确定需要大力加固/改建以支持更多公交车流量的区域。在同样位于约克地区的7号高速公路上，拟议的BRT将使用现有的中间车道，并扩大了道路平台以容纳新的外部车道。面临的挑战是设计一种加宽的人行道结构，以使其使用寿命大大延长，以最大程度地减少由于将来的维护活动而导致的停机时间。此外，必须同步处理现有中位数的BRT车道和旨在延长使用寿命的室外车道的修复工作。 BRT车道规定为红色或砖砌路面，以使其与相邻的一般交通车道区分开。本文总结了现场调查的结果，其中还包括探地雷达（GPR）和落锤挠度计（FWD）载荷挠度测试，以及为应对设计挑战而开发的创新路面设计。

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