改善首都的铁路基础设施

Author:Staff

每天都有成千上万的通勤者进入首都，伦敦的更多火车是帮助交通拥堵的加油。

作为Brighton Mainline升级计划的一部分，每小时将在早晨峰值上提供另外六列火车。随之而来的是，该计划还将在2043年再增加两次额外的火车，并在2043年再增加两列火车。绩效还将通过隔离流量来提高，并有助于该路线上的额外火车路径。

Topographical surveys are required for this complex and extremely busy piece of London’s railway infrastructure. The programme provides the ideal time to upgrade to newer, faster and more efficient solutions for data capture.

Network Rail, the government entity in charge of the programme, turned to Atkins to perform the surveys.

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.

Atkins Rail Division, based in Croydon, Surrey, United Kingdom, has been using Leica Geosystems surveying equipment for almost 20 years. The decision was made last year to replace the majority of the consultancy’s trusted but aging fleet of Leica System 1100 and 1200 total stations and to add to the firm’s existing GNSS, digital levelling and traversing equipment with the latest Leica Captivate solutions.

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个CS20控制器
• 2 Captivate CS35 tablet computers
• 2 LS15自动焦点数字水平
• 8个全遍布套件

With the new portfolio, Atkins was ready to take on the important rail project.

场地限制和挑战

为了使伦敦维多利亚和伦敦桥的其他计划路径，需要在风车桥交界处隔离流动。它将支持通过钥匙列车流的隔离路线上的绩效改进，该钥匙列车流目前会在其他相邻线路和更广泛的南伦敦网络中转移反动延迟。

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.

As a result, feasibility options were developed to achieve these outputs. The options include:

• Grade separation of Windmill Bridge Junction,
• Selhurst Spur的延伸
• Additional track between Windmill Bridge Junction and East Croydon
• 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.

“与所有铁路地形调查一样，站点访问的局限性和铁路基础设施的性质限制了我们进行调查的方式，” Atkins Track Track Team Project Project Project Project Project Project Project Project Project Project Project Project Manage。“在该规模的项目区域尤其如此，考虑到基础设施部分可用的复杂交界处和火车路线。”

Leica Captivate solutions helping the world of rail

凭借在铁路环境中的准确性和可靠性，阿特金斯（Atkins）求助于Leica Geosystems的解决方案和技术，以避免在昂贵和时间限制性轨道拥有期间昂贵的停机时间。在这种情况下，新的Leica Captivate系列中可用的最新创新是无价的。

The Leica Nova MS60 MultiStation, with its wide spread of functionality including the ability to scan up to 1,000 points per second, was used on the project. Combined with the imaging capability on all the total stations and the interoperability of these with both the Leica CS20 controller and CS35 tablet computer, this enabled Atkins to capture every necessary detail in the quickest and most effective way.

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.

The project and the data provided to it will lead to providing a better railway experience for the growing customer base and will be used to support economic growth of the surrounding areas.

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迷人的软件技术，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。减少在赛道上的时间降低了基于现场的风险，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.

With intuitive and understandable software in the field and in the office, Captivate allowed instant 3D visualisation of the survey data collected on the railway site, providing a detailed understanding of the project requirements.

The Leica ScanStation P40 laser scanner also offered a fast scan rate with less noise and clearer scans along with streamlined workflows from the field to office and back via easy automated processing with Leica Cyclone laser scanning software. This was then all quickly and easily communicated to all staff and to the client using Leica TruView.

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.