Ingenieur Vol 77 Jan-Mar 2019 ingenieur 2019 Jan-March | Page 56

INGENIEUR ‟ We use Huawei Cloud’s ModelArts deep learning image recognition module to identify photographs of grouting holes and determine which are filled, which are not, and which are for threading pipes. buildings will make up more than 20% of all new buildings by 2020 and over 50% by 2025. The prefabricated construction industry is set for rapid development, and while there are vast market opportunities, there will invariably be some technical problems that need an urgent solution. For example, ensuring the strength of floors in the connection process requires all the grouting holes to be filled. In the past, this required people to inspect on-site photographs, which was very inefficient. Now we use Huawei Cloud’s ModelArts deep learning image recognition module to identify photographs of grouting holes and determine which are filled, which are not, and which are for threading pipes. Typically, you can upload 100 on-site images and achieve an effective identification rate of close to 80%. This solution has made the inspection department over 50% faster and reduced construction errors by 30%. Use Case 5: Structural damage identification The fifth use case is structural damage identification. Sports stadiums, for example, are impacted by fatigue, corrosion, and ageing over time. And inevitably some damage occurs. Locating and defining the state of the damage is a crucial task. 6 54 VOL 2019 VOL 77 55 JANUARY–MARCH JUNE 2013 However, sensors are only installed in parts of the structure. This is because the sensor layout must not impact the original structural properties of the building. Moreover, installing many sensors is not cost effective. As a result, we have to place as few sensors as possible, while trying to obtain a true picture of the building’s performance. This requires us to perform mechanical back analysis and damage identification from the data. In the past, this identification process would mostly be applied to a few beams or boards. But by harnessing Huawei Cloud ModelArts, we can now identify more complex damage. Using Huawei Cloud’s EI platform, we have made mechanical simulations 100 times faster, and are able to implement an identification solution that supports real results from data, covers the whole structure, and includes monitoring and prediction. In the future, we want to expand to low- energy, low-cost IoT applications to improve O&M management efficiency and lower costs. We are also seeking to develop a structural health monitoring platform to eliminate security risks at an early stage to support the development of smart cities and smart transportation. We also hope to build a big data platform in the construction health monitoring field to promote the development of the entire industrial chain.