Hydraulic and morphologic risk assessment for rivers at bridges and pipeline crossings

桥梁和其他河流交叉点，如管道，是根据它们与河流的相交来定义的。这些交叉点成为交通和环境网络中的重要节点，因为它们可以用来衡量和理解彼此，但也因为它们代表着风险。桥梁和管道可能会因为冲刷和河床退化而失效，造成巨大的损失，并对管道健康产生负面影响。因此，重要的是要尽量减少与建设相关的风险，并监测和模拟由洪水引起的持续风险，特别是在土地利用和气候变化的背景下，设计标准既不确定又不充分。拟议研究的目的是开发工具，以减少与桥梁和管道穿越相关的风险。该研究将建立在SNC Lavalin开发的桥梁风险评估数字工具的基础上，SNC Lavalin是该研究的行业合作伙伴。本研究的预期结果为1。一个额外的分析模块，用于评估与河流不稳定和河床退化相关的风险，在线性基础设施交叉路口使用流域的形态计量学分析；2. 一种基于现场的河流/基础设施交叉口评估协议，旨在减少与数值模型中参数化相关的不确定性。这项研究的长期目标是减少与河流穿越有关的风险，特别是与艾伯塔省北部的管道和安大略省南部的桥梁有关的风险。

Bridges and other river crossings such as pipelines are defined by their intersection with rivers. Theseintersection points become important nodes within both transportation and environmental networks becausethey can be used to measure and understand the other, but also because they represent risk. Bridges andpipelines can fail because of scour and bed degradation, leading to significant expense and negative impacts onstream health. It is thus important to minimize the risk associated with construction and to monitor and modelthe ongoing risk due to passing floods, particularly in the context of changing land use and climate where thedesign criteria are both uncertain and inadequate.The objective of the proposed research is to develop tools that reduce the risk associated with bridges andpipeline crossings. The research will build on a digital tool for risk assessment at bridges that has beendeveloped by SNC Lavalin, the industry partner in this research. The expected outcomes of the currentresearch are 1. an additional analysis module to assess the risk associated with river instability and beddegradation at linear infrastructure crossings using a morphometric analysis of the watershed; 2. a protocol forfield based assessment of river/infrastructure intersections designed to reduce the uncertainty associated withparametrization in the numerical model. The long term objective of this research is to reduce risk associatedwith river crossings, particularly in relation to pipelines in Northern Alberta and bridges in Southern Ontario.