Entwicklung fortschrittlicher Baukonstruktionen als ein Beitrag für ressourceneffiziente Verbundkonstruktionen

• Development of modern constructions as a contribution to ressource-efficient composite structures

Schiewerling, Matthias; Mähner, Dietmar (Thesis advisor); Letmathe, Peter (Thesis advisor)

Aachen : RWTH Aachen University (2022, 2023)
Dissertation / PhD Thesis

Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2022

Abstract

The main objective of this research was to develop resource-efficient constructions with a focus placed on connection details. For this purpose, a method that can be used to rate the resource-efficiency of connection details independently of the building was developed. This method provides a user-independent rating of the construction details, resulting in a percent value of how much can be recycled. The evaluation within this thesis was done in relation to the mass as well as the volume of the constructions. In addition, it was shown that the procedure can be transferred to other evaluation variables, such as monetary values. The evaluation procedure was then transferred into a software solution, which can serve as a starting point for a tool for planners. The rating procedure was applied to existing standard details by using the developed software. The output of the rating was used to identify and quantify optimization potentials within the standardized details. The results of the individual assessments were empirically evaluated and assessed. Based on the findings, the best evaluated details for each junction were selected and further developed on the basis of the identified optimization potentials. An increase in recyclability of approx. 10 % was achieved using this procedure. In addition, further possibilities to increase the recyclability through consistent further development of the designs were shown. Lastly, completely new constructions were developed for those details that could not be optimized just by altering the standardized details. As an example, the deconstructable connection of a precast balcony was presented in an excursus chapter. A prototype was subjected to an initial series of tests on its practical suitability and static load-bearing capacity, which allows positive forecasts for the feasibility of such a construction. As a conclusion, it can be said that with the help of the presented, software-supported evaluation methodology, an efficient and target-oriented improvement of construction details with regard to recyclability was made possible.

Institutions

• Forschungskolleg VERBUND.NRW [080053]
• Division of Mineral Resources and Raw Materials Engineering [510000]
• Chair of Management Accounting [812110]