Hexagrids plegables y transportablesun sistema prefabricado con nudos articulados bloqueables

Resumen

This document describes the technological feasibility of a structural system based on hexagonal modules with lockable pin joints. The system is mainly aimed at the construction of low and medium height buildings in developing countries, which need to increase and improve their infrastructure at high speed and low cost. In order to achieve this goal, the project takes a two-pronged approach: -Analyse and adjust to scale the development of structural façades in hexagonal modules, known as Hexagrid. -Investigate the possibility of adjusting the foldability of straight bar systems used in lightweight structures so that they are applicable to flat surfaces. This document is divided into six chapters: The first chapter looks at using active vector structures in the construction of structural frames, predominantly for high-rise buildings. The scope and limitations of this approach are studied, while describing previous research conducted, then going on to look at the development of hexagonal frames, known as Hexagrid. The second chapter is dedicated to gathering information on solutions used by other authors to achieve articulation and locking of joints, almost always within the scope of lightweight structures. This chapter touches on the basic concepts required to understand and produce a folding system, the movement of which may be controlled and locked in its position of use. The third chapter focuses on finding a geometrical configuration with bar dimensions adequate for the structure to efficiently withstand the proposed stresses. It thus explores models that vary in the configuration parameters of the frame, as well as in density and changes of direction, in addition to the connection with the slabs. A standard model is subsequently proposed that fits a height equivalent to 4, 8, 12, 15 or 16 floors with a spatial configuration of tube within tube. Through these models, we attempt to look for the limits of the proposed structural design, in order to understand how the models absorb applied loads and to understand the relationship between deformation produced by wind and deformation produced by vertical loads. The fourth chapter proposes a folding system, the design of pin joints and a locking system for the model proposed in the previous chapter. The design of the pin is analysed in terms of its behaviour and resistance against the maximum forces obtained in the analysis of the structure conducted in the previous chapter. The fifth chapter synthesises the work previously conducted by applying the knowledge obtained to an 8-storey building. This chapter seeks a solution to the process of transport and assembly of a building in real-life application. The sixth and final chapter brings together the conclusions from each of the previous chapters to reach overall conclusions that may lead to possible future avenues of research.