Faculty and Research Laboratories
Department of Civil and Environmental Engineering offers the programs for students to comprehensive and systematically study the major fields of structure, water, soil, materials, and planning, which are the foundamentals of civil and environmental engineering. For this purpose, we actively utilizes large-scale and state-of-the-art experimental equipment, which is also important for our cutting edge research.
Here, we introduce these experimental facilities using 360° videos. They include the experiments conducted by students in the second and third years in the bachelor program.
It is a state of preparation for conducting a tensile experiment. We make marks to check the elongation of the steel material before and after the experiment, measure the interval, and attach the sensor.
It is a condition that a steel specimen is installed in the testing machine to perform a tensile experiment. After this, the specimen with a length of 600 mm and a thickness of 9 mm is pulled and torn off using this testing machine. Can you imagine where the steel is torn?
There are various problems involving waves, such as coastal erosion, storm surge, destruction of coastal environment, reduction of marine resources, etc. It is essential to understand the nature of water waves when considering the factors and countermeasures that cause them. With this experimental device, it is possible to investigate the properties of water waves by artificially generating waves and measuring and observing changes in the wave height, wave velocity, or water particle orbit.
Many weirs are installed in rivers to control the flow. How does the weir change the flow of the river? This experimental device allows us to investigate and confirm various properties related to the flow over the weir, such as what kind of pressure is generated in the flow around the weir and at what speed it flows.
Water quality evaluation is important for preserving the natural environment and building a safe water utilization system. In this laboratory, we can analyze ion concentrations, harmful substance concentrations, organic carbon concentrations, optical properties of water, and others including basic parameters such as water pH, dissolved oxygen, and electrical conductivity. It is also equipped with ultrapure water production equipment, chemical storages, and various experimental equipment for water treatment.
As self-weight is dominant load in geotechnical engineering problems and confining pressures generated by it govern behaviour of soil mass. In order to replicate the gravity-induced stresses of a prototype in a 1/n reduced model, it is necessary to test in a high gravitational field n times larger than that of prototype. A geotechnical centrifuge is thought to be a most convenient tool to make a high acceleration field in a model. Ongoing research involves on topics of earthquake resistance of soil structures, deep foundations, liquefaction countermeasures, seepage.
Preparation of centrifuge model tests. (Topic. Seepage-indeced back piping erosion)
Make a high acceleration field in a model. Start (0:03 - ) , Achive the target accelaration (1:09 - ) 50G
By this machine, loading tests can be conducted on test specimens with similar dimensions to those of actual structures such as bridges. Through the loading tests, we are contributing to establishment of structural theory and integrated design methods for reinforced concrete structures.
0:00 to 1:00 Installation of reinforced concrete test specimen
1:00 to 1:24 View of the experimental factory
1:24 - Loading test of reinforced concrete test specimen (observing cracks on concrete surfaces)
If you set the image quality to 4K, you can view it in high quality.