Development and expansion in the cities have increased the demand for road construction projects in different regions of the world. The construction projects in the modern era require the utilization of latest technology. BIM and its collaboration with other technologies like GPS, UAV, AR/VR, and telematics have successfully proven their worth in provision of a solution to various construction industry problems. Innovations in BIM process by researchers are a remarkable asset for planning and visualization. Earthwork in road sector demands further research to achieve better planning, visualization and improvements in productivity using BIM process. The study in paper presents a user-friendly flexible earthwork BIM module framework for the road projects and explains the complete modeling process from point data collection to final design.This study also discusses a model partitioning technique which can be used for the division of earthwork BIM model for better visualization and implementation. This method is useful for the primary design information modeling of earthwork at each section and is easily useable for the multi-phase construction project.
-Building Information Modeling (BIM) technology developed in the recent decades and provided a new perspective which shifted the trend from simple 2D drawings to intelligent 3D modeling. BIM is usually applied in many construction fields, however, it is not very common in earthwork projects. Earthwork is one of the primary component in any construction project especially in highways, dams etc. In the earthwork it has become possible through BIM to monitor and analyze the changes in model accurately. This study presents a discrete module system devised to support the Pad based 3D Earthwork BIM design, topographic modeling, and earthwork volume calculation. In the case of a slope, the direction and inclination of the slope can be incorporated into the design. The point cloud data obtained from GPS survey and Laser scanning process which can be then used to create TIN (Triangulated Irregular Network) surface and ground mesh. It provides a 3D BIM design compatible with software like Autodesk Civil 3D and also with Machine guidance system. This paper discusses the importance of Pad based earthwork design with its practical site application and also presents a case study using Machine guidance. The results of experiments on construction projects show that this approach can be effectively used for earthwork operations.
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