Integrated Digital Technology Solutions for the Entire Construction Process: BIM / VR / AR / Point Cloud / SLAM Panorama / Operations Robots - All in One Package!

Design Stage

   Designers of all disciplines can carry out virtual fixed-point inspections and pre-planned route inspections within plan drawings (BIM+Slam): in CAD, viewpoints are placed at fixed locations according to each designer's disciplinary needs, or virtual inspection routes are published according to design requirements, and they are then synchronized into the BIM 3D space (supporting 3D design software such as SU, AC, Revit and Shuwei). Designers of all disciplines can identify, discuss and resolve issues within the same virtual 3D environment, which makes issue tracking and closure much easier. The same immersive environment can also support design review and optimization of the design scheme.

At the same time, designers can accumulate experiential data during virtual inspections inside the building; through machine learning, data generates knowledge and knowledge serves production, bringing everyday business data to life. Virtual inspection data can be exported in video format for convenient handover or archiving.

Trajectory-based virtual inspection system with multi-discipline split-screen comparison

Product features:

1. It establishes a collaborative workflow that integrates multi-discipline drawings and multi-discipline 3D models, improving coordination efficiency across the design process; this new trajectory-based walkthrough inspection mode also makes design review and scheme optimization more convenient;

Smart Construction Technical Guidelines (Draft for Comments) issued by MOHURD sets requirements for digital design and virtual inspection by design institutes

With 3D point-cloud reverse modeling technology, the structural conditions of the site can be captured as point-cloud data in the early stage of interior design. After reverse conversion into a BIM model, interior designers can use it as a base model for the related interior design work, thereby ensuring that early interior design outcomes are better realized, while also reducing the time designers spend on initial site surveys and improving overall design efficiency.

The three main interior design scenarios:

Scenario 1: Use the BIM model from reverse modeling as the base model to refine and develop the design scheme.

Scenario 2: Place the designed pipelines into the model reverse-generated from the point cloud for M&E coordination design and proactive control such as clear-height prediction.

Scenario 3: Carry out virtual inspections based on the virtual point-cloud spatial model plus the design model, so that problems are identified and resolved in advance.

Reverse modeling of indoor furniture

During the construction support stage, designers can capture panoramic site data at key project milestones and promptly raise issues where work is not carried out according to the drawings or is non-compliant, resolving them collaboratively. It also makes online inspections convenient for the project owner, the general contractor and other parties; such trajectory-based panoramic video suits scenarios including supervision of concealed works, project progress reporting, construction guidance and technical briefings, project acceptance, and project O&M or renovation management.

Construction Stage

AR links BIM data with the actual site, creating a true twin digital construction effect, reducing rework costs and improving project construction quality. For example: technical briefings for complex joints and efficient construction process control.

The BIM model is positioned at centimeter-level accuracy and superimposed 1:1 onto the construction site, where AR visualization guides on-site construction verification, progress management and quality management. This ensures that users can keep every stage of construction under control, identify and resolve problems promptly, improve coordination efficiency among trades, and achieve high-quality project delivery.

Completion Stage

Completion acceptance stage: verify the consistency between the BIM as-built model and the completed project. By measuring deviations, inconsistencies such as incorrect construction, omitted work and offsets are identified, and quantified indicators and conclusions are given to complete the project assessment.

The as-built model consistency check mainly works by setting tolerances for different components, parsing the actually captured point-cloud data, and comparing and analyzing it with the BIM model data, thereby identifying where the point-cloud model and the BIM model are inconsistent. It can generate visual single-point deviation maps, component deviation heat maps and component-level parameter deviation lists, and export the assessment results and evaluation report.

Visual display of as-built check results: color gradients show single-point errors, component deviations and spatial deviations between the BIM as-built model and the completed project, problem locations can be pinpointed directly, and a complete consistency evaluation report of the results can be exported.

O&M Stage

In an earlier article, Technical Extensions and Applications of "Spatial BIM", the author noted: Reproducing reality through panoramic imaging is, in the author's view, an entry-level form of twin management, in which clients can use this basic digital twin of the real scene to carry out asset inventory, server room inspection and power station inspection, and more.

Asset inventory and inspection in a large Shanghai community (automatic localization of equipment issues)

Work order statistics for a large Shanghai community

Pinpoint statistics of typhoon damage in a Shanghai community (automatic localization of damaged tree species)

Digital dashboard for project asset inventory

In complex and harsh environments, rail-mounted robots can better replace humans in performing 24-hour, blind-spot-free site inspections. Compared with Slam inspection, this inspection method is more suitable for harsh environments such as high temperatures and harmful gases, or for longer linear projects, such as tunnels and utility tunnels.      

Equipped with a dual-spectrum thermal imaging pan-tilt unit, smoke detection and gas detection modules, the tunnel and utility tunnel inspection robot achieves scheduled automatic inspections at fixed points through remote control and real-time positioning.

Technical support:

    Tsinghua University, Tongji University, Weishitong Technology

    Panwu Technology, Yijian Technology, Wanxi Technology 

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