污垢简单铺路 - 从弦线到完成3D机器控制解决方案

Author: Richard Davies

Worldwide, the number of journeys taken by air has increased exponentially over the past 70 years. According to Flight 24, in a single day over 230,000 commercial flights flying across the sky. A recent study byE. Mazareanu估计在预定航班上行驶的乘客人数在2020年超过47.2亿；它比2004年高约137％。

The United Arab Emirates (UAE) in particular is fast becoming a significant hub for air travel, with both Abu Dhabi and Dubai International Airports competing for a growing connections market. The level of infrastructure needed to support this scale of operation is substantial. It is vital that it is constructed to the highest standards and that any downtime is limited when maintenance is required.

Al Nisr, a construction company based in the UAE, is a world leader in the construction of airfields and supporting infrastructure. The company is experiencing rapid growth and believes that investing in technology is vital when competing for complex contracts, particularly those that involve the paving of runways or aprons. The company has previously been involved with major UAE projects at Abu Dhabi International Airport, Al Maktoum International Airport, Sharjah International Airport, Al Bateen Executive Airport, Al Fujairah International Airport, and many military airbases across the UAE.

From traditional string line method to complete 3D paving solution

When paving infrastructure as important as runways and airfield aprons, Al Nisr aims to lay a runway to a tolerance of 5 millimetres, meaning 5 mm or less variation in the thickness, the height of the surface. Traditionally, they had utilised string line methodology to achieve this accuracy in their paving work, using manually laid out strings staked into the ground to guide the thickness and level of the asphalt being laid. This string line methodology can impact the level of accuracy and productivity, as highlighted by Al Nisr’s general manager, Eng., Orwa Alward Zaidan:

“We were using string lines – this limited the number of trucks that could come and drop materials. Sometimes people can hit the string lines, and this causes problems. Concrete is laid at night, and the survey of the site is carried out in the morning, so if the string is hit in the evening, it delays the project until the next morning. String is also sometimes not accurate and can experience sag – this can have a negative impact on the accuracy of the surface. With string, we could originally only pave 300m lengths at a time.”

With several significant upcoming projects such as a new airfield operated by Etihad Airways in Abu Dhabi and a military airfield, Al Nisr invested in aLeica iCON Pave Concretemachine control system fromLeica Geosystems, part of亚搏苹果app在工作中,以提高他们的效率和准确性. The company was already aware of Leica Geosystems’ easy-to-use solutions, as one of their engineers had used the system in the UK and was impressed with the performance, understanding that it represented a complete solution for 3D asphalt paving. In addition, Al Nisr had previously used a variety of survey solutions from Leica Geosystems, including Leica TS9 and TPS1200亚博5分钟快三, along withLeica Viva GS14GNSS smart antennas. They were always happy with the usability and reliability of this survey equipment, so it made sense to invest in Leica Geosystems’ machine control solutions.

Achieving high-accuracy with stringless paving

机器控制系统可节省各种重型建筑应用的时间和成本，并用于铺路应用中，以避免依赖弦线，使操作员和承包商的工作更容易，同时降低成本。无绳索混凝土铺路还提高了成品表面的一致性和质量。

The Leica iCON pave concrete system purchased by Al Nisr consists of the rugged, shock and waterproofLeica MCP80控制面板，Leica iCR80orTS16total stations, and twoLeica MPR122360° prisms for guidance, all supported byLeica MC1software, the all-in-one software platform for machine control. When using the system, the operators from Al Nir found the graphical interface intuitive and uncluttered, allowing them to focus on the job at hand and complete work quickly with the desired precision.Leica ConX是一种基于云的解决方案和Web界面，允许客户使用强大的分析工具可视化和验证本地化参考模型，调查数据和构造数据，以监视和报告网站的生产力。Al Nisr发现这一功能特别有用，因为它使他们的主要测量师可以从他的办公室舒适地准确地想象现场进度。

Before paving work began, a survey was completed using Leica GS14 GNSS smart antenna and total station solutions from Leica Geosystems.Autodesk Autocad Civil 3D在转换为XML文件之前，将软件用于制作网站模型，然后直接将其直接上传到摊铺机。Leica Iconstruct Field模拟器was used to ensure everything was correct before work began. Once sections of paving were completed, as-built checks were carried out again using Leica Geosystems GNSS equipment, along withLeica NA2automatic levels.

Thanks to the easy integration and interoperability of the various software and hardware solutions the Hexagon portfolio offers, Al Nisr was able to move from traditional workflows toward a more connected, digitised construction site.

Leica Geosystems的现场支持和培训

该系统的安装得到了Leica Geosystems及其本地分销合作伙伴GECO Engineering的专用机器控制人员的本地支持。AL NISR的工作人员需要培训 - Leica Geosystems的工作人员参观了该项目，并与工程师和所有其他参与该项目的员工坐在一起，以确保他们对系统感到满意。项目期间还提供了持续的支持。

Laying runways and aprons using GOMACO GHP2800 and GP2400 pavers, the system has provided a wide variety of benefits to Al Nisr, efficiency being the main one. Originally, a paver had a run of 300 meters linear per night but now can do 900 m linear per night or nearly 2000 cubic metres per night. In addition, with this technology, the role of surveyors is now easier and safer. Pave patterns and models developed in the office can directly be uploaded to the pavers without having to knock in any pins for string lines. Thanks to the increased visibility offered by ConX, all stakeholders can now look at the project and say, with confidence, that it will be completed significantly faster than before.

The benefits of using machine control are clear to chief surveyor, Arshad Mahmood:

“一切都很好，我们真的很喜欢系统！在阿联酋，该系统可以帮助我们领导市场 - 我们现在可以研究一个项目，并说它可以在短时间内完成。我想说的是，我们的生产力最多是使用常规系统时的生产率三倍。”

Overperforming expected deadlines with machine control

初步计算表明that the Abu Dhabi airfield project could take up to 12 months, yet utilising machine control from Leica Geosystems, it took six months. With large infrastructure projects such as airfields, contractors want to complete well within deadline as this allows them to avoid significant financial punishments, and move onto other jobs.

利用Hexagon的重型建筑产品组合的大型产品和品牌亚搏彩亚搏苹果app;票手机版下载，Al Nisr很荣幸能成为阿拉伯联合酋长国机场机器控制的先驱。该方法提高了公司的业绩，提高了声誉，并帮助企业赢得了更多的工作。