战斗时间和潮汐以捕获3D的5公顷沿海建筑工地

Author: Hazlinda Mohd Nuron

In 2018 the construction of Hyosung Vina Chemicals Port began in the Ba Ria-VungTau province, southern Vietnam. A collaboration between the Vietnamese Government and South Korean industrial conglomerate Hyosung Corporation, the new port is a part of the Hyosung Chemical Complex. Once completed, the Hyosung Chemical Complex will include a propane dehydrogenation (PDH) production plant, a polypropylene (PP) plant, a liquefied petroleum gas (LPG) storage tank and an LPG and petrochemical product warehouse in the Cai Mep Industrial Zone in Ba Ria-Vung Tau, located near Ho Chi Minh City.

该开发项目的最后一项任务之一是港口的液化石油气码头的建造。在海洋，水路和运输基础设施中拥有30多年的经验，Portcoastare Vietnam’s leading port and coastal survey consultants. The company was engaged in creating the 3D mapping for the topographic survey, the as-built model of the LPG jetty and facilities, and to conduct the inspection report for the revetment protecting the jetty.

地形测量覆盖面积超过5 hectares – and with much of the area located in the water, Portcoast’s level of specialist knowledge and experience was essential for collecting data in these hard-to-reach areas. To compound the inaccessibility challenges, whilst some areas of the complex were still under construction, others were already operational.

Dr. Hoang Hiep, the Portcoast team leader on the project commented,“扫描整个港口的主要挑战是在一个综合处的扫描位置进行选择，那里的交通流量很大，而正在进行的建筑工作的干扰可能会损害精确扫描所需的稳定性。”

To mitigate the challenges of working in this disruptive, heavy traffic environment, Portcoast decided to conduct the scans from elevated locations above the internal road.

Dr. Hoang Hiep of Portcoast explained,“Working from high above the site required a scanner which could deliver a high level of precision over a long measurable range. The Leica ScanStation P50 delivered an accuracy of up to 3mm so we could cover the full range with confidence and precision.”

Whilst theScanStation P50被用来捕获桥顶上的数据，在团队使用特殊修改的设备的桥下，例如定制的起重机来安装Leica RTC360andLeica BLK360在复合物，狭窄且无法接近的区域中测量和捕获高度详细的数据，例如液体罐，管道系统，进入桥和海洋装载臂。

Time is money

Promising to offer significant economic benefits for the region, the construction project alone is estimated to have created jobs for about 2,000 workers during its construction. Once completed, the port is estimated to contribute 80 million USD annually to the state budget so it was imperative to ensure that the port can be fully operational as quickly as possible. Speed was, therefore, a key factor in the selection of equipment for Portcoast and in training the team in the use of this equipment.

“不仅与Leica Geosystems团队合作，该团队的训练时间几乎使一半了，而且使用Leica设备捕获数据的高速速度大大减少了调查时间。在这样的项目中，沿线的地形调查通常需要大约12个小时的时间，而每个设置的调查网格为20m。而使用ScanStation P50时，它可以减少到3小时。加速该过程还减少了我们的运营风险和这项工作所需的员工数量，”Hoang Hiep博士解释说。

Enhancing collaboration between site and data analysis office

To scan the port, Portcoast needed to combine thousands of points and to combine the data from different devices, such as total stations, GNSS and laser scanners – something that would usually prove to be a very complex and time-consuming process. The seamless integration of Leica Geosystems’ equipment and software solutions meant the data could easily be passed between the off-site team processing the data and the field team.

Portcoast在巴基斯坦和美国东南亚的类似项目中工作，特别意识到热带国家快速数据传输的重要性。迅速变化的天气状况要求在现场和办公室团队之间快速数据传输，以验证数据并防止任何数据丢失。从大地设备中收集点云数据后，Portcoast使用了狮子旋风，，，，狮子旋风3DRandLeica Infinityoff-site to process the data.

“捕获现场数据的高速和高级准确性有助于避免办公室后处理的延迟，因为该软件帮助我们每次需要时检查了这些点。有了无穷大和CONX，很容易在1分钟内在现场和办公室之间传输数据，”added Dr. Hoang Hiep.

“旋风产生的结果图是一个非常准确的模型，我们可以用来创建3D模型和VR系统。然后，我们可以进一步完善模型以提供高水平的准确性和可见性。”

By collecting point cloud data at different times and usingLeica CloudWorx for Revitto convert this into as-built drawings, the margin (a matter of millimetres) for settlement or displacement of the pipe racks could be estimated with the utmost precision.

The as-built drawings and BIM will support the Facilities Management aspect of the port providing a reference for the inspection report and enabling Hyosung to plan and model future developments and renovations for the port using the digital model.

The work that took the team of seven engineers just weeks to complete will significantly reduce the site visits required for future maintenance and can be used to enhance and protect the operations of the port for decades to come.

“When we took on this project, only half of the team had any prior experience with this geodetic equipment. The increased efficiency from the integration across the Leica Geosystems product ecosystem saved considerable time, and now the whole team is eager to use the Leica Geosystems geodetic equipment regularly,Hoang Hiep博士总结说。