Röthig, Clemens

Diploma Thesis:
1936

Topic:
Analysis of the connection possibilities of steel reinforcement in the course of solid wall pressure

Editor:
Clemens Röthig

University Professor Responsible:
Univ.-Prof. Dr.-Ing. Dipl.-Wirt.-Ing. Jens Otto

Supervisor:
University Supervisor: Dipl.-Ing. Patrick Maiwald

Editing Period:
03.04.2023 until 03.08.2023

Abstract:
Due to the shortage of skilled workers in the construction industry, it is desirable to develop innovative solutions for the use of machine technology and automation in the construction of buildings. The Technical University of Dresden specialises in solid wall printing. Until now, unreinforced wall structures have been printed. The next step is to make it possible to print structurally more complex supporting structures made of concrete. This requires automated reinforcement integration, which is the focus of this work. The aim of the work is to find out how the steel reinforcement can be integrated in the context of the printing process and which connection options are suitable for the reinforcement bars. In the first step, the different types of reinforcement are listed and explained. In order to find out how steel reinforcement can be integrated into the printing process, the general advantages and disadvantages of steel reinforcement are then worked out in order to obtain a differentiated overview. The requirements for reinforcement, nominal diameters or even nominal cross-sectional areas are then elaborated in order to also clarify the legal framework conditions for reinforcement.
The findings are associated with solid wall printing at the Technical University of Dresden. The problem of reinforcement in connection with 3D printing can be divided into intra- and inter-specific reinforcement. The intraspecific reinforcement is the reinforcement that is located in the component.
After considering different variants for the integration of reinforcement in solid wall printing, it can be stated that before a concrete instruction for action can be formulated for the special connection option for reinforcing steel, the research of 3D concrete printing must first be further advanced. Then, problem areas in the structure of the mesh can be identified and solved accordingly. In principle, it should be noted that there is not one "right" way of connecting the reinforcing bars. If we refer to the inter-specific reinforcement, the reinforcement between two components produced by 3D printing, also called connection reinforcement, there is logically the possibility of anchoring the connection reinforcement to a floor slab or to another wall with screw and plug-in sockets as well as by welding.