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Urban Management Systems

In 21st century, the advanced society should be improved the quality of life and be sustainable in considering the disaster mitigation and the environment. To achieve this goal, in this laboratory, various research topics are studies and researched, that is, the technology to create space frontier in the subsurface, the advanced approach of the geo-sequestration of energy byproducts of radioactive waste and anthropogenic CO2, advance science and technology of mechanical and hydro mechanical behavior of geo-material, environment friendly and safe urban freight transport systems and management for logistics systems.

Academic Staff

Kiyoshi KISHIDA

Kiyoshi KISHIDAProfessor (Graduate School of Engineering)

Research Topics

Estimation of mechanical and hydromechanical properties of jointed rock masses. Development the constitutive law considering the mechanical and hydromechanical behavior of jointed rock masses. Development of a coupled inversion technique of deformation, stress and pore pressure and its application. Multi phases fluid and geomechanics simulator. Estimation of earth pressure on the ground excavation. Estimation of mechanical behavior of the pre-cast arch culvert and its application.

Contacts

Room 335, C1-2 Bldg., Katsura Campus
TEL: +81-75-383-3229
FAX: +81-75-383-3436
E-mail: kishida.kiyoshi.3r@kyoto-u.ac.jp

Yasuo SAWAMURA

YasuoSAWAMURA.jpgAssociate Professor (Graduate School of Engineering)

Research Topics

  • Seismic assessment of precast arch culvert
  • Development of the reinforced earth method excellent in workability and earthquake resistance
  • Seismic performance of a bridge column integrated by multiple steel pipes with directly-connected piles

Contacts

Room 336, C1-2 Bldg., Katsura Campus
TEL: +81-75-383-3230
FAX: +81-75-383-3436
E-mail: sawamura.yasuo.6c@kyoto-u.ac.jp

Yusuke MIYAZAKI

miyazakiAssistant Professor (Graduate School of Engineering)

Research Topics

To develop reasonable design in underground structures and foundation structures, static and dynamic soil-structure interaction are studied through physical modeling and numerical analysis. Seismic assessment of hinge types of precast arch culverts, horizontal resistance of steel pipe sheet pile foundations and mechanical behavior of vertical circular shafts during excavation process are mainly studied.

Contacts

Room 334, C1-2 Bldg., Katsura Campus
TEL: +81-75-383-3231
FAX: +81-75-383-3436
E-mail: miyazaki.yusuke.6w@kyoto-u.ac.jp

Research Topics

Advanced approach of the geo-sequestration of energy byproducts

While considering performance of radioactive waste disposal system and CO2 Geo sequestration, it is necessary to examine hydraulic properties of rocks near the facility in detail, because thermo-hydro-mechanical-chemical (THMC) processes may be active under such conditions. In this laboratory, a long-term rock permeability change is predicted by developing a THMC numerical model that considers pressure dissolution at grain contacts in the rock. Then, the influence of pressure dissolution is examined by comparing calculation results with and without pressure dissolution.

 THMC Simulation

 Fig. 1 Simutaion results through THMC in considering the pressure solution

Mechanical and Hydro-mechanical behaviors of fractured rock masses

In considering the excavation of tunnel and underground cavern, stability of rock foundation and slope, the mechanical and hydro-mechanical behaviors of rock masses are clarified.
The mechanical and hydro-mechanical behaviors of rock masses are strongly affected by the mechanical and the hydro-mechanical properties of joints/fractures. In this laboratory, the fundamental laboratory experiments such as direct shear test and triaxial test are carried out and the constitutive model are estimated.

Single fracture flow
Fig.2  Distribution of flow vetors on apeture contour map and enlarged view

Design, construction, and maintenance of geo-infrastructures and rock infrastructures

The effective design, safety construction, and smart maintenance of geo-infrastructures and rock infrastructures are studied here. For examples, when shallow overburden tunnel is to be excavated in an urban area, the auxiliary method that will be applied should be considered. When an area is to be excavated in deep underground, seepage and the huge earth pressure that will be encountered should be considered. For slope stability, the remote sensing system that actively uses InSAR and ICT is introduced.

 

Clarification of seismic performance of reinforced earth wall and precast arch culvert

In order to realize the labor saving of the earthworks, the reinforced earth wall and the precast arch culvert have been positively applied in the domestic road structures. Through the dynamic centrifuge tests and the numerical analyses, these unknown seismic behaviors due to dynamic soil structure interaction are being investigated. Based on these approaches, we aim to clarify the seismic performance.

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