和田 章(わだあきら)

工学博士 / 東京工業大学 名誉教授

Akira Wada

Doctor of Engineering
Professor Emeritus, Tokyo Institute of Technology

研究概要 / Research Summary

The planning, design and construction of buildings should, without saying, serve the purposes and meet the requirements of them. It is also very important that the structures should address the environmental condition and ground condition well and ensure the safety against disturbance such as earthquakes and typhoons. Differing from other industrial products, architectural structures are usually extremely large in size and have no choice but to be built by order. The size of earthquakes and typhoons we assume for the structures to withstand happen once every 100 years or even 500 years. However, Japan is considered to be one of the countries with most severe conditions in the world because of the high frequency of big earthquakes and typhoons. Focusing on the environmental condition of Japan, we set a big goal to pursue the rational design and construction of architectural structures with guarantee of safety
As mentioned above, because architectural structures are very large in size and are built by order, and the size of disturbance assumed for design are rarely occur, it is impossible to do experiments using the real scale structure and applying real scale external force. Therefore in order to comfirm the safety of the building, it is necessary to establish a method to understand the mechanical behavior of the structure based on the theory of the mechanical properties of the structural materials. To establish the theories, it is fundamental to investigate through experiments the relation between the mechanical properties of the materials and the mechanical properties of the structural members such as columns, beams, floors and walls, and the relation between the properties of the members and the mechanical properties of structural frames. Ideally the experiments should be carried out using real scale structures, but in most of the cases they are done with down-scaled devices, or even models. We are aiming at carrying out various experiments and establishing theories to show the mechanical behavior of the structures as accurately as possible based on experimental results. Our targets are RC structures, SRC structures and steel structures. Since the strength of concrete and steel have increased enormously due to the advance of the materials, whe also include the structures using those materials as our research targets.