Laboratory and field testing of an FRP-reinforced concrete guideway

交通基础设施的耐久性是政府和私营部门的主要关切。在这个项目中，女王大学的庞巴迪运输和结构工程研究人员正在合作一个项目，该项目与在支撑新测试轨道的单轨混凝土梁中使用耐用有色金属钢筋有关。这项技术的使用有望极大地降低支撑单轨轨道的民用基础设施的维护成本。这主要是由于用于加固混凝土梁的玻璃纤维增强聚合物筋具有良好的耐久性。与传统的加固不同，这种玻璃纤维钢筋不会生锈。该项目将是此类项目中的第一个，这种类型的钢筋将在重约30吨的大型混凝土梁上使用直径达30毫米的钢筋。这些钢筋将用作纵向和横向抗剪钢筋。虽然较小尺寸的这种钢筋已经成功地应用于公路桥面，并显示出巨大的前景，但玻璃纤维钢筋，特别是大直径钢筋，还没有被探索用于单轨应用。因此，这个测试轨道项目将是一个极好的机会，可以在现实生活条件下研究在这种应用中使用这项技术的可行性，其中速度高达90公里/小时的列车将通过测试梁。这些梁，即一根用玻璃钢加固的梁和一根用传统钢筋加固的相邻梁，将在测试过程中安装特殊的应变和挠度传感器，以在列车通过铁轨时收集数据。此外，还将建造两根用玻璃纤维筋加固的半比例梁，并在实验室进行破坏测试，以进一步了解这些梁的行为，并确定这些梁的极限强度和使用寿命。该项目将包括培训一名硕士研究生、一名博士后研究员和至少一名本科生，以及几名工程师和庞巴迪运输公司的人员。

Durability of transport infrastructure is a major concern for government and private sectors. In this project Bombardier Transportation and structural engineering researchers at Queen's university are collaborating on a project related to the use of durable non-ferrous reinforcement in a mono-rail concrete girder that supports a new test track. The use of this technology promises significant reduction in maintenance costs of the civil infrastructure supporting monorail tracks. This is primarily due to the excellent durability characteristics of the glass-fiber reinforced polymer bars used to reinforce the concrete beams. Unlike conventional reinforcement these fiberglass bars do not rust. The project will be the first of its kind, where this type of reinforcement will be used in diameters up to 30 mm in such a large scale concrete beam that weighs about 30 tons. The bars will be used as longitudinal and transverse shear reinforcement. While smaller bar sizes of this type of reinforcement have been successfully used in highway bridge deck applications and showed great promise, fiberglass bars, especially large diameter bars, have not been explored for monorail applications. As such, this test track project would be an excellent opportunity to investigate the feasibility of using this technology in this application under real life conditions, where trains travelling at speeds of up to 90 km/hr will pass over the test beams. These beams, namely one reinforced with fiber glass bars and an adjacent beam reinforced with conventional steel reinforcement, will be instrumented with special strain and deflection sensors to collect data during testing when trains pass over the track. Additionally, two half scale beams reinforced with fiberglass bars will also be built and tested to failure in the lab to further understand behavior and establish the ultimate strength and service life of these beams. The project will involve training of one master's student, one post-doctoral fellow and at least one undergraduate student, along with several engineers and personnel from Bombardier Transportation.