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.

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.

Ryuichi Imai

Ryuichi Imai

Research Field:
Measuring, Analyzing, and Visualizing National Spaces and Urban Activities

Our Laboratory researches technologies of measuring, analyzing, and visualizing social spaces(national spaces and urban activities) for learning their current status, discovering potential events, predicting the future, and taking measures to deal with problems.
Research on methods of measuring and managing national spaces: we are studying methods of generating and utilizing product models as well as three-dimensional models of national spaces using photographs and point cloud data measured by a wide variety of devices (total station, laser, radar, moving object measuring vehicle, and UAV).
Research on analyzing and visualizing urban activities: using a huge amount of data obtained 24 hours a day, 365 days a year from media, such as mobile phones and car navigations systems, we are studying methods of analysis and visualization for understanding the current status of urban activities (pedestrians and vehicle traffic), discovering potential events, and making future predictions. We are also studying road networks and the foundation of maps that conform to the purpose of analyzing and visualizing urban activities

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

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.

Daisuke Uchida

Daisuke Uchida

Research Field:
Steel Structure and Maintenance Engineering

We are studying fatigue strength, workability, and maintenance strategies of steel structures such as bridges . Examples of our recent research projects are as follows . < Fatigue strength evaluation of the orthotropic steel decks> In this study, focusing on deck propagating crack from weld root between deck plate and trough rib at cross rib sections. In order to examine the reference point for evaluating the fatigue strength of the crack, the stress influence plane of the weld root and the strain influence plane of some points were compared by FE analysis. As a result, we confirmed the possibility that the position 5 mm away from the weld toe of the trough ribs on the deck plate will be the reference point. < Slip coefficient offriction type of high strength bolted connections with expanded holes or slot holes> In high strength bolted connection, standard diameter of bolt holes for passing bolt has been determined as bolt diameter +2.5mm. However, when it is inevitable for construction, expanded holes or slot holes are sometimes required. In this study, the tensile tests and FE analys is were performed to examine the slip coefficient of the high strength bolted connections composed of connected plates with expanded holes or slot holes and splice plates with holes of standard hole diameter + 2 mm. On the basis of the results, we proposed a reduction factors for slip resistance.

Major in Civil and
Environmental Engineering