Joan Wangui Gikonyo

I am a doctoral student at the Department of Building Technology at Linnaeus University. Previously I have worked as a design engineer. My projects involved designing of concrete foundations, steel and concrete frame structures. In my research, I focus on modelling of non-linear behaviour of connections in cross-laminated timber structures. I also serve as a teaching assistant in the department.

Research

The PhD project focuses on the design, simulation and dimensioning of connections with mechanical fasteners in cross-laminated timber (CLT) structures. The aim is to develop numerical and analytical tools for the engineering design of connections. The research also includes the analysis of novel types of connections in CLT.

I apply different types of numerical methods, e.g. beam-on-foundation modelling with plasticity in the material behaviour of steel and timber. The models created are validated by means of experimental data from literature and own experiments. Findings from the single fastener connections are integrated into multi-fastener models for connections with steel elements. Finally, I investigate the influence of the non-linear behaviour of connections on the overall behaviour and stability of CLT structures.

The final thesis seeks to enhance understanding, design and relevance of connections in CLT structures. This research is embedded in a larger project that investigates raw material supply for CLT, structural health monitoring of CLT structures and their carbon footprint, allowing for the research findings to be viewed in larger perspective in regards to timber construction.

Teaching

I am involved in supervision of bachelor theses and also assist in supervision of steel and timber courses offered by the department.