FacultyMajor in Civil and Environmental Engineering

Urban Planning

Kimio Takami

Kimio Takami

Research Field:
Urban Planning and Urban Design Engineering

Community planning that focuses on quantity, aimingat receiving a concentrated urban population, is undergoing drastic changes. Ithas become necessary to slim down existing cities to an appropriate size inorder to improve their quality in the era of depopulation. Efforts have beenmade to improve the beauty and comfort of municipalities,although their goals and methods have remained unfocused. Considering urbandesign based on broader concepts, we are studying methods for beautifulcommunity planning that are suitable for each place, while at the same timeexamining the harmony among various elements including climate, geography, urbaninfrastructure, land use, etc.

Kiyoe Miyashita

Kiyoe Miyashita

Research Field:
Urban/Regional Planning, Spatial Analysis, and Remote Sensing

We are studying sustainable urban formation for theimprovement and centralization of land usage in cities and the regeneration ofnatural environments by exploring a new direction in urban planning during thecurrent era of depopulation and environmental and financial restrictions. Usingsatellite data, we have selected target regions for regeneration and examined thearrangement of greens and buildings with respect to heat islands andbiodiversity. For a more detailed examination, we establish an evaluation indexof urban spaces and analyze spaces at the district level, on the basis of GISdata. Future community development will require the formulation of alternativeproposals and strategic planning assessment. We are currently makingalternative proposals and examining evaluation methods using three-dimensionalimages in virtual reality with the intention to share these images for urban regenerationand encourage citizen participation.

Tsuneaki Fukui

Tsuneaki Fukui

Research Field:
Architecture for infrastructure and environment

At the end of the growth age, it is clear that the landscape of city and region based on the old system are no longer sustainable.The purposes of city planning and public works have to shift from the growth management to the model change and creation of new sense of value. Considering this situation, it is indispensable to deeply analyze each city and region, plan the strategy in synthetic approach in order to organize and emphasize their advantage. For the development of the concepts and methods to create/preserve regional landscape, we are studying the design of public space and civil structure, the planning and management system of landscape, the cognition, evaluation of environment, the history, and so on.

Environmental System

Hisakazu SAKAI

Hisakazu Sakai

Research Field:
Geotechnical Earthquake Engineering

Our main research interests are the mitigations of the disaster damage to human and their social activities caused by earthquakes.
Especially, it is very important to rapidly restore the damaged lifeline for the suffering people in the disaster area after a severe earthquake.
We conduct several researches on i) prediction of the damaged region by the landslides of natural and artificial slopes by using the large deformation analyses, ii) methodology to detect damaged locations in a broad-area lifeline network for scenario earthquakes, iii) seismic assessment of earth structure, and iv) reliability analysis for lifeline facilities.

Kohji MICHIOKU

Kohji MICHIOKU

Research Field:
Environmental hydraulics, sustainability in hydrosphere, water quality management in lakes and reservoirs

A sustainable management and wise use of water is the most critical and challenging issue in the next era. Various environmental problems in river channels and catchments are investigated focusing on hydrodynamics, water quality and ecology that are playing important roles in human's activities and nature. Hydraulic analysis of fluvial channels, sustainable management of vegetated rivers, water quality management in lakes and reservoirs, micro-bubble aeration of anoxic water are examples of our research interests. Not only field works but also computational analysis is carried out in order to find out hydrodynamic and ecological processes in the hydrosphere in river catchments. Our goal is to provide an engineering design tool for creating a river catchment that has a symbiotic relationship with local and global societies.

Yoshiharu Suzuki

Yoshiharu Suzuki
Research Field:
Hydrometeorology, Ecohydrology, Hydraulic Engineering

Our laboratory is aimingto assess and address global environmental issues, including global warming, urbanheat island, atmospheric and hydrospheric acidification, from the perspectiveof hydrology, which deals with the water circulation and resources, and hydraulicengineering. We are also focusing on how to prevent or mitigate urban meteorologicaldisasters caused by extreme weather events like torrential rains. Since thenatural and global environment is rapidly changing in the recent years due toglobal climate change and urbanization in developing countries, our surroundingsin urban life can be seriously damaged in the near future. Our laboratory issearching for adaptive measures against such situations, including how to reconstruct present urban structures and how to achieve theharmonious coexistence of man and nature.

Design of Material and Structure

Takeshi Mori

Takeshi Mori

Research Field:
Steel Structure and Maintenance Engineering

We are studying fatigue strength, life extension, and maintenance strategies of steel structures such as bridges. Examples of our recent research projects are as follows.
<Fatigue strength evaluation of a fatigue-cracked welded joint that was repaired by the Bolting-Stop-Hole-Method>
In this repair method, a stop-hole drilled on the edge of a fatigue crack is tightened using a high-strength bolt. This method allows for better fatigue durability than the original state of the joint before the fatigue-crack appeared.
<Fatigue strength evaluation of the connection between the main girder and a lateral beam of a steel girder bridge>
In this connection, bi-axial stresses occur due to interaction between the lateral beam and the main girder, and the principal stress direction changes due to the moving load. We aim at establishing a fatigue strength evaluation method for the connection in such complex stress situations.

Toshiaki Mizobuchi

Toshiaki Mizobuchi

Research Field:
Concrete Materials and Durability Design

Our laboratory is attempting to design concrete that has the flexibility, air permeability, minute tissue-like structure, and warmth organization of wood in order to generate a concrete that is suited for the Japanese climate. It is said that 1000-years-old wood will remain in good condition for another 1000 years. Wood is a material that can live two times. However, a piece of wood that can last 1000 years requires a skilled carpenter. A carpenter specializing in building shrines and palaces who can breathe life into wood might be like the old woodworker Geppetto in the story of Pinocchio. We want to breathe life into concrete so that it can last for 1000 years with wood-like characteristics that are more suitable for the Japanese climate. In order to do so, we are studying methods to prevent the generation of cracks in concrete, taking on the role of "concrete doctors" and examining the causes of deterioration of concrete.

Chikako FUJIYAMA

Chikako FUJIYAMA

Research Field:
RC, PC and Steel-Concrete composite structure Bridge engineering

Our strategy in solving structural problems in the civil engineering field begins with our understanding of material science and structural mechanics. Currently we are tackling the fatigue problem of steel-concrete composite bridge decks. Their failure modes depend not only on the fatigue properties of individual constituent materials but also on their structural shapes and interface bonding – how the constituents combine. Moreover, the kinematics of micro pore water affects plasticity and elasticity in structural concrete that is subjected to various external forces, such as sustained load, cyclic load, and impact. To develop these lines of inquiry and proceed to solutions, we actively conduct both numerical analysis (non-linear FE analysis) and experiment.

Major in Civil and
Environmental Engineering