Abstract
Abstract. Progress monitoring of construction sites is becoming increasingly popular in the construction industry. Especially with the integration of 4D BIM, the progression and quality of the construction process can be better quantified. A key aspect is the detection of the changes between consecutive epochs of measurements on the site. However, the development of automated procedures is challenging due to noise, occlusions and the associativity between different objects. Additionally, objects are built in stages and thus varying states have to be detected according to the Percentage of Completion.In this work, a framework is presented to derive work progress of construction sites based on point cloud data. More specifically, a methodology is constituted to compute the Percentage of Completion of in-situ cast concrete walls. In the literature study, existing methods are evaluated for their ability to track progress even in highly cluttered environments. In the practical study, we perform an empirical analysis on a set of periodic point clouds to establish the obstacles and feasibility of the methodology. This work leads to a better understanding of the progress monitoring paradigm which is still subject of ongoing research and will serve as the basis for the further development of a set of automated procedures.
Highlights
A prominent feature of the Building Information Modeling (BIM) process is the ability to model the available information of a structure during its life-cycle
We look to expand their approaches with building logics with structural support sequence knowledge to further enhance the results and compute the Percentage of Completion (PoC) of in-situ cast walls
Three point cloud epochs are observed of a subsection of the site that is under construction (Fig.4a)
Summary
A prominent feature of the Building Information Modeling (BIM) process is the ability to model the available information of a structure during its life-cycle. A major application during the construction phase is the attachment of the construction planning to the physical model These 4D BIM representations contain detailed information on when specific objects are constructed and are used for construction planning, resource management and financial aspects such as the cost over time of the project (Volk et al, 2014). Aside from the advantages for management purposes, the active tracking of a construction site allows for the creation of an asbuilt BIM model (Son et al, 2015) This model reflect the state of the structure as it was built and has numerous applications in terms of project planning, facility management, structural mechanics and so on (Hajian and Becerik-Gerber, 2009).
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