激光扫描如何改变FAM构建方式（Ferrovial - Allan Myers），收集其道路项目的网站信息

Author:Frank Collazo

华盛顿特区的交通拥堵最严重。除了缓解拥堵，改善安全性并每小时增加2,000人到4,000人，这个22英里的道路扩展项目还将通过添加另外两条快车车道，每个方向上的三个常规车道，交互增强，收费公路来改变这一关键的北部弗吉尼亚动脉。，停车和骑很多，并共享使用路径。

With the aid of3D laser scanning，这个项目正在改变方式FAM建设收集站点信息，报告更改并确保一切都在设计公差之内。

Said Gabriel Jimenez Lopez, FAM’s Survey Manager,“With scanning, I don’t have to imagine anything, it is a highly accurate 3D picture of the construction site sitting on my laptop, better yet, I don’t have to rely on someone’s interpretation of what they think is a break-line or an important feature, and best I don’t have to question if they picked up a critical piece of data. Everything is there all the time”。

现场工作人员

用Leica GS18 T设置2人的机组人员控制，同时将RTC360 3D激光扫描仪放在三脚架上。每个设置的总时间；2分30秒。

Two scanning crews are each equipped with aLeica RTC3603D激光扫描仪，平板电脑Leica Cyclone Field 360应用，，，，Leica CS20controller andLeica GS18 TGNSS smart antenna. They are standalone independent of other surveyors so no need for total station coordination and no need to plan where to set control.

Field Workflow

Consists of setting one control point with the GS18 T/CS20 at 30-second RTK mode per setup, then using Cyclone FIELD 360 app to scan at medium resolution and acquire HDR imagery: roughly 1 minute 51 seconds for scan and imagery. Basically, press two points in field, one on CS20 for control, the other on the Cyclone FIELD 360 app to scan, then rinse and repeat. Control is extracted in the office using auto-extract control during import.

当一个项目要求更高的精度（例如监视结构和钢）时，GNSS RTK控制会得到全站控制。

办公室

扫描被进口到旋风寄存器360and checked. No need to register or geo-reference because this was done in field via the Cyclone FIELD 360 app. Simply import, check quality, adjust if needed, then export point cloud and useCyclone 3DR对于它提供的许多应用程序。天气正在检查垂直性，自动提取的地面以创建锡，音量计算，创建横截面报告或检查根据设计与设计，Cyclone 3DR涵盖了所有这些。

除了Topo的FAM使用扫描：

• 土方计算
• 监视固定墙 - 每周一次检查以确保没有发生移动
• Bridge deck work for new and expanded bridges during build to ensure design tolerances are met
• Measuring stockpile volumes with high accuracy
• Checking verticality of H-piles (i.e. steel)
• 与其他部门共享数据，即他们的建筑技术办公室通过Internet使用truview
• 水shed analysis
• Bridge clearance
• Check structural damage of existing bridges for repair

Watch video to see project in action.

用控制点扫描挡土墙

FAM不要一次通过总站检查一次测量的高程和垂直度，而是用RTC360在几分钟内检查数百个H-Piles