Title:
Application of 3D Concrete Printing with Form-Optimization for Structural
Author(s):
Kolluru Subramaniam
Publication:
Web Session
Volume:
ws_F24_Subramaniam.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
11/3/2024
Abstract:
In construction, 3D concrete printing (3DCP) is emerging as a technology that has the potential of creating significant impact on the state of practice and overcoming several limitations of conventional construction processes. 3DCP is currently focused on delivery systems which build a structure using layer deposition. 3DCP technology is however still in a nascent stage in construction related applications. Techniques for printing free-standing structures are not sufficiently developed for large-scale applications. In this paper, the concept of form specific structural system optimization that broadly follows ‘material-follows-force’ will be used to arrive at a shape that reduces weight while minimizing the requirement of conventional reinforcement. This concept of form optimization is demonstrated with the design of a bridge following the concept of a tied arch. The tied arch, which combines the tension ties with compression struts is used to develop a force transfer system that minimizes the requirement of reinforcement. The printed structural system of the tied arch is used to design a pedestrian bridge of 8 m span. The evolution of the structural system of the bridge that was optimized for the use of material, while ensuring stiffness is presented. The material testing, design, off-site printing and installation of the structure are detailed.