监视都柏林通勤者的安全

Author:Renata BarradasGutiérrez

全世界的城市都需要建立，维护和扩展基础设施，尤其是公共交通系统，以使人们（无论是商人，购物者还是学生），以保持一个国家及其经济的发展。

但，您是否曾经想过是什么是在安全地搬到城市的背后？尽管最有可能首先想到建筑物或维修基础设施，但还有其他关键活动，就像监视，尽管没有引起人们的注意，但仍可帮助工程师和设计师了解基础设施和材料的结构运动的影响。到降低基础设施的风险，，，，早期的和精确的监视是必要的。

The infrastructure supporting each of us, be it roads, bridges, dams, buildings and railways is subjected to hazards, environmental factors, and load pressure. Stress and risk to infrastructure can come from direct use but also from other factors, such as nearby construction sites and excavations. Such is the case of a north section of Luas light rail system in Dublin, Ireland where the construction of a group of commercial buildings - build to cope with the increasing demand for student accommodation - were monitored to ensure the integrity of the transportation system.

With sixty-seven stations and42.5公里赛道，都柏林的Luas轻轨系统安全携带4180万乘客在2018年。为了最大程度地减少与Luas的安全性和结构完整性有关的当前和未来问题，Datum Monitoring Ireland（Lloyds Datum Group的一部分）是一家专业公司远程监测土方工程，，，，structures and transport infrastructure, analysed the data of the dual Luas light railway system continuously through a specialised monitoring system.

警报24/7

LDG Datum was requested by Walls Construction to supply an effective, accurate and reliablewarning system那会24/7操作和notify stakeholders in near real time, if a threshold exceeded specifications. The monitoring system needed to meet design requirements, local council regulations and Transport Infrastructure Ireland’s (TII) code of practice, without interrupting the railway operations at any time. The team at LDG Datum also had to ensure no physical object was on the tramway. Traditional Methods involved survey engineers taking physical manual readings on track, which creates its own inherent dangers.

监视解决方案涉及测量，岩土技术和环境传感器以及监视软件。LDG Datum的监视解决方案该项目由两个Leica Nova MS60多层，一个LS15数字水平和地球人物监视软件。该解决方案允许非侵入性运动监测；因此，该地区可以在项目的整个期限内保持开放，而不会破坏公共或铁路服务。

“ Datum的现场核心活动是使用Leica Geosystems的机器人多固化 - MS60进行对双Luas Light Railway轨道的连续扫描。这些工具连续扫描了双电车，并将托管数据直接托管到了安全的网页上，以审查相关的派别，”saidMark Hodgen, director at LDG Datum。

The team also used振动监测用融合的声音级麦克风捕获了由现场作品产生的地面传播振动，并使用电感位移传感器来监视相邻结构上现有裂纹的裂纹运动。连续的尘埃监测站，此外，该站用于捕获当地的PM10颗粒或颗粒污染的水平。

捕获准确的数据只是开始

主要的监视任务捕获了所有升起或沉降[地面的垂直高程]激光扫描与MS60。为了使铁轨区域摆脱障碍，轨道上没有棱镜。因此，通过激光扫描测量了沿轨道最接近部分的数百个大关点。被捕获的扫描由X，Y，Z坐标的数千个测量点组成，允许检测离群值[失误]，并确保以可靠的方式测量所需的位置[区域]，即使在轨道轨道的正常负载下，相邻的行人区。

Three initial scans set a baseline to obtain a reference scan. All subsequent scans were compared to their reference scan and calculate the median deformation between the reference and the subsequent scan. This value is used to compare against a defined threshold. TII’s code of practice solicits to trigger alarms, should displacement occur. The system provided automated alerts notifying designated stakeholders when values surpassed the designated threshold.

The scanned data captured by the two MultiStations was collected through GeoMoS and hosted on LDG Datum’s secure website so its client and TII could have full visibility of the current and historic recorded values. This量身定制的过程从获取数据到变形分析，fully automated。

“检查了数据并与允许遵循安全协议的历史数据进行了比较。我们定制的物理街道上每周进行地理系统LS15捕获的准确级别，以向承包商提供保证，并提供自动监控的备份按计划工作。在拆除，打桩和建筑阶段，周围建筑物也进行了振动和噪音监测，”saidHodgen。“ LDG数据为墙壁构造提供了完整的远程监控系统包，因此它们可以访问和查看数据。”

降低风险

All instrument data collected and processed through GeoMoS maintained stakeholders informed on Luas light rail stability during the construction work near the railway while preventing any interruptions to the service. With proven success in this project, Datum is replicating thisautomated monitoring systemon all its tramway projects along the Luas line.

“考虑到岩土工程和建筑工程的水平，我们对该项目的主要重点是确保公共基础设施和周围建筑物保持不受干扰。LDG基准在监视领域具有很高的信誉。因此，我们与Mark及其团队互动，他们设计了一个合适的系统，该系统符合O'Connor Sutton Cronin（咨询工程师）规格和运输基础设施爱尔兰的工程守则，以在Luas Light Rail System上工作，”墙壁建设部门主任Cathal Healy说。“LDG Datum delivered a highly accurate, reliable and commercially viable service, and we were delighted to have had them on this project.”

Contractors, just like Walls Construction, may在施工前后，降低其风险的暴露by continuously monitoring the project as it progresses through its lifecycle. Geosystems’ monitoring systemsdetect and help rectify potential problems在任何结构中，情况变得至关重要或变得严重失控。

LDG Datum Website –www.lloydsdatumgroup.com