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BIM Tower Crane Navigation system
Transcript of BIM Tower Crane Navigation system
1- Problem Statement (Motivation).
2- Existing work from Literature review.
3- Improvements presented in the main studied journal paper.
4- Case studies/experiments conducted by the authors.
6- Suggested developments for the BIM navigation system.
1- Problem Statement (Motivation).
“A BIM- and sensor-based tower crane
navigation system for blind lifts”
Presented to Dr. Zhenhua Zhu
Presented by Tarek Salama
1- The “blind lift,” which is the most common limitation that block the operator’s view for the work threats.
2- The poor lighting conditions due to the darkness at dawn or late-hour work.
3- Inconvenient angle of vision due to the increase in ratio between the lifting radius and the vertical distance to the loading/unloading area.
4- The great vertical loading/unloading distance from the operator eyes which is always the case in high-rise and skyscrapers construction.
Parts of a tower crane
2- Existing work from Literature review
3- Improvements presented in the main studied journal paper
The tower crane BIM Navigation System
The base is bolted to a large concrete pad that supports the crane
In that case, a Potain MD 208
The mast is connected to the base. It gives the tower crane its height and contains the stairs for the operator
The slewing unit (gear and motor) is attached to the top of the mast. It allows the crane to rotate
The operator's cab
The counter jib (or machinery arm) is shorter than the jib. It contains the crane's motors and electronics, as well as the large concrete counterweights
The long horizontal jib is the working arm. It is the portion of the crane that carries the load. A trolley runs along the jib to move the load in and out from the crane's center
1- The perceived ease of use increased after using second BIM Simulation system prototype from 3.2 to 4.4 out of 5.
2- The touch screen was inaccurate and slow.
3- The perceived usefulness indicated that anti collision systems were used 6.67 % and BIM Navigation System was used 93.33 %.
4- BIM Navigation system has very high potential to be used in large scale projects.
Using 4D software for automatic updating of the BIM Simulation System.
Using BIM simulation system for high rise buildings.
Simulating several tower cranes on site.
Head-up display better than LCD display.
4- Case studies/experiments conducted by the authors
Anti Collision System
Advanced Tower Crane
Robotic Tower Crane
The BIM Navigation System Configuration
Components of BIM Navigation System
The First Experiment for the “Perceived ease of use”
The first prototype navigation system was not connected to the location-detecting sensors.
Developed using the BIM software called Open GL and Visual C++.
The setup of the navigation system using Ultra-Mobile Personal Computer (UMPC) with a 7-inch touch screen.
Interviews and surveys for 6 professional tower crane operators.
First Prototype BIM Navigation System
1- The view rotation feature was difficult to be used.
2- The touch-screen interface was difficult to control the view.
3- The touch screen did not react to touch immediately due to the heavy 3D model
4- UMPC had low processing performance.
5- The tower crane operators preferred 2D models of a building to the 3D models.
6- A video camera view side by side with the BIM model.
7- Adding numeric information for the vertical and horizontal locations of the lifted object.
8- 13-inch screen size was the most appropriate screen size.
The Second Experiment for the “Perceived ease of use”
Second prototype rebuilt using BIM software called “Eyeshot Pro” and “Visual C#” .
Length and position of each component was parametrically adjustable
Components position updated using the real time location data from sensors.
UMPC was changed with a high performance personal computer as a navigation server.
Screen was split into three views: top view, side view, and video camera view
Touch screen was changed to a 19-key mini-keypad.
Second prototype was tried by 3 tower crane operators on seven-storey building in Korea for 71 days.
The Third Experiment for the the “Perceived usefulness”