Improving the railway infrastructure of a capital city

Author:职员

With thousands of commuters into the capital city every day, additional trains into London are a plus to help with the heavy traffic congestion.

As part of the Brighton Mainline Upgrade Programme, an additional six trains per hour will be made available during the morning peak. Along with this, the programme would also see four additional services into London with a further two additional trains in 2043. Performance will also be improved through the segregation of flows and contribute toward additional train paths on the route.

伦敦的铁路基础设施中，需要进行地形调查。该程序提供了升级到更新，更快，更有效的解决方案以捕获数据的理想时间。

负责该计划的政府实体网络铁路转向阿特金斯进行调查。

A major upgrade

Established in 1938, Atkins is one the world’s most respected design, engineering and project management consultancies. Working closely with a wide range of clients from different sectors and regions across the public and private sectors and local and national governments, Atkins delivers long-term trusted partnerships to create a world where lives are enriched through the implementation of ideas.

英国萨里的克罗伊登（Croydon）的阿特金斯铁路部（Atkins Rail Division）使用Leica Geosystems测量设备已有近20年的历史。该决定是去年决定取代咨询公司（Leica System）1100和1200个电台的大多数值得信赖但老化的车队，并使用最新的Leica Captivate Solutions增加了公司现有的GNSS，数字级别和遍历设备。bob apple

This major upgrade saw a broad spread of instruments:

• 1 Nova MS60 MultiStation
• 7 Viva TS16i Imaging total stations
• 4 Viva GS14 GNSS Smart Antenna
• 10 Captivate CS20 controllers
• 2 Captivate CS35 tablet computers
• 2 LS15 auto focus digital levels
• 8 full traverse kits

有了新的投资组合，阿特金斯准备接受重要的铁路项目。

Site limits and challenges

To enable the additional programme paths toward London Victoria and London Bridge, there was a requirement to segregate flows at Windmill Bridge Junction. It would support performance improvement on the route through the segregation of key train flows, which currently transfer reactionary delays across the other adjacent lines and the wider South London network.

To achieve additional train stopping capacity at East Croydon, there was a requirement for additional platforms to be constructed. In addition to safely delivering a 12-car train operation between Selhurst and Gloucester Road Junction, infrastructure was required to accommodate a 12-car train on the Selhurst Spur.

结果，开发了可行性选项以实现这些输出。选项包括：

• 绿草de separation of Windmill Bridge Junction,
• Extension of the Selhurst Spur
• 风车桥交界处和东克罗伊登之间的其他轨道
• Two additional platforms at East Croydon.

It was identified that work would be required at East Croydon station to safely deliver the required passenger access to new platforms and provide sufficient increased passenger capacity on the concourse.

“As with all railway topographical surveys, the limitations of site access and the nature of railway infrastructure constrains the way we conducted the survey,” said Matevz Groboljsek, Atkins Track Team project manager. “This was especially true on a project area of this scale and considering the complex junction and train routing available through the section of the infrastructure.”

徕卡吸引解决方案帮助rai的世界l

With accuracy and reliability paramount in the rail environment, Atkins turned to Leica Geosystems’ solutions and technology to avoid costly downtime during expensive and time restrictive track possession. The latest innovations available within the new Leica Captivate range proved invaluable in this situation.

该项目使用了Leica Nova MS60多稳定功能广泛传播，包括每秒扫描1000点的能力。结合所有总站的成像功能，以及与Leica CS20控制器和CS35平板电脑的互操作性，这使Atkbob appleins能够以最快和最有效的方式捕获所有必要的细节。

The same controllers and Captivate software were used with the GNSS Smart Antennae to establish control quickly and accurately using HxGN SmartNet correction service. Alongside the Captivate software, the latest Leica LS15 digital level with imaging and auto focus were used, allowing for a faster, more accurate staff reading in harsh conditions. The instruments were also used in conjunction with track trollies and alongside Leica Geosystems laser scanning solutions.

The provision of topographical survey data and selected point clouds for the project designers to use and develop created a rationalised railway infrastructure design that will increase capacity on an already packed section of South London’s rail network. Ultimately this will declutter historical track alignments, making them suitable for rail expansion into 2020 and beyond.

该项目及其提供的数据将为不断增长的客户群提供更好的铁路体验，并将用于支持周围地区的经济增长。

Providing topographical surveys to London’s railway infrastructure

For Atkins, Leica Geosystems solutions have brought many benefits to the project.

Groboljsek说：“通过采用Leica Caintivate软件技术，我们可以为网络导轨提供快速准确的数据实现，避免昂贵的回报，并节省时间和精力，同时也降低了风险。”“通过使用Leica GeoSystems解决方案的组合，可以安全，准确，有效地收集数据，尤其是在轨道访问权限期间的有限时间内收集数据。在赛道上花费的时间减少了基于现场的风险，并减少了对阿特金斯人员受伤的风险。此外，网络铁路财产和基础设施的风险降低了。”

Primary and secondary control was established using the fast and accurate Leica Viva GS14 GNSS Smart Antenna, using both post processed and live RTK data from HxGN SmartNet. The service was also used to increase efficiency by assuring the quality of 3D GNSS data directly in the field.

借助现场和办公室中的直观且易于理解的软件，Captivate允许即时3D可视化在铁路站点上收集的调查数据，从而详细了解项目要求。

Leica ScanStation P40激光扫描仪还提供了快速扫描速率，噪声和更清晰的扫描以及从现场到办公室的简化工作流程以及通过Leica Cyclone激光扫描软件返回的简化工作流程。然后，使用Leica Truview快速，很容易地与所有员工和客户沟通。

The Brighton Mainline Upgrade Programme upon completion is one of the first where the topographical survey was used much earlier in the project lifecycle. Combined with Leica Captivate solutions, the rail project is delivered smoothly allowing for the design team and surveyors to proactively manage and transmit decisions based on immediate feedback.