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Robotic Force System
Tensioned Formworks for Concrete Shells
Computational Design and Fabrication
DigitalFutures 2019 Tongji Workshop
MITÐ&CAUP Research Course
Instructor: Prof. Philippe Block, Dr. Tom Van Mele Collaborator: DigitalFutures 2019 Group1
Role: Photographer, Group summary after work camp, Establish working documents, Unit node fixation experiment, Cutting pattern planarization, Tensioned frame bottom reinforcement, Concrete mixing ratio
Date: Jun.-Jul., 2019
This workshop was to complete the tension formwork concrete form-finding, data analysis and extraction, planarization and 1:1 full-scale construction with COMPAS. The first part is to establish the basic geometric model through rhino platform, and then to find the 3-d graphical static shape of the geometric model through the form finding command defined by COMPAS on Python platform. The second part is to store the geometric model digital format (.json file) after form finding, and then import the whole file into rhino to operate on the geometric model. We finally got node ,fabric, cable information through COMPAS and finished the casting work to the end.
KEYWORDS:
Tensioned Formworks, Form-finding, Data Analysis, Python
0_COMPAS Platform
1.1_Basic Mechanical Theory
1.2_Topological Form and Force Research
(Refer to Shell Structures for Architecture - Form Finding and Optimization)
2.1_Form-finding Progress
2.2_Force and Structural Analysis
2.3_Fabrication Data for Assembly
2.4_Concrete Behavior Simulation
3_Material Study and Construction Process
3.1_Assembly Cable-net Falsework
The first step is to generate a mechanically significant pull cable system (dual). The second step is to generate a vertical screw for the intersection of the cable net system and to vent the reserved holes on the PVC film cloth.
3.2_Installation Fabric Shuttering
The cable net system is the core of the entire mold, and the double-layer PVC is a concrete cast surface mold. Its generation logic is the midpoint of the cable, rebuilding the mesh. We rediscovered the thickness of the two films based on the normal vector offset on the grid.
3.3_Pouring of Concrete
Three rounds of concrete were tested in the entire work camp. The final result was to start demoulding the concrete 30 hours after the completion of the concrete watering. Due to the insufficient vibration of the watering process and the problem of horizontal stitching of the local mold, the work piece has a broken mold. The work of the work camp was completed by instant stitching and sealing.
4_Construction Video
Learn more about Robotic Force System, please visit:
Block Research Group
5_Discussion
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