Faculty Profiles - TANIKAWA, Hiroki

Papers - TANIKAWA, Hiroki

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A Study on Socio-Economic Inpacts of a Sustainable Energy Flow System in the Philippines Reviewed

谷川寛樹

第38回環境システム研究論文発表会講演集 Vol. 38 page： 413 - 418 2010

Industrial structure change and CO2 emission associated with infrastructure development in China Reviewed

谷川寛樹

Environmental System Research Vol.38 page： 301 - 307 2010

Analysis on Evolution Tendency of Urban Energy System Structure in Shanghai City Reviewed

谷川寛樹

12th International Summer Symposium, JSCE Vol. 12 page： 331 - 334 2010

全国都道府県・政令都市における建設資材ストックの集積・分布傾向に関する研究 Reviewed

長岡耕平, 谷川寛樹, 吉田登, 東修, 大西暁生, 石峰, 井村秀文

環境情報科学論文集 Vol. 23 page： in press 2009.11

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

高度経済成長期に大量に蓄積された都市構造物の多くが耐用年数を迎え,今後廃棄物が大量に発生すると予想される.持続可能な社会を構築するためには廃棄物のフローや資材の投入量を少なく抑える必要がある.このため計画的に解体や撤去,修繕をするために,都市構造物の資材別でのストックを把握する必要がある.そこで本研究では建築物・道路・下水道を対象に都市構造物ストックを統計データにより推計し,GDP などの経済成長によりストックの集積・分布の傾向を明らかにする.結果,ストック密度は全国 116(kg/m2),政令都市 358(kg/m2)と面積あたりでは政令都市が大きい結果となった.現状においてはストック密度と経済状況の関係に多様な経済要因が作用していることが確認された.

複数年の空間情報を用いた都市重量の変化に関する研究－建築物・道路を対象とした和歌山市中心部でのケーススタディ－ Reviewed

稲津亮, 谷川寛樹, 大西暁生, 東修, 石峰, 井村秀文

環境情報科学論文集 Vol. 23 page： 89-94 2009.11

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

都市の成長に伴い，過去から現在にかけて大量の建設資材が投入されてきており，近い将来大量の建設副産物が発生することが予測されているが，再利用先の減少により，排出量と投入量のバランスの崩壊が危惧されている．そこで，空間情報を用い，過去から現在までの資材蓄積量を推計した．さらに，用途地域ごとに耐用年数を推計し，将来のマテリアルバランスの予測を行った．その結果，建築物からの排出量が2030年には290万トン，道路建設に投入される物質投入量が12万トンと推計され，排出量が投入量を約24倍を上回ることが明らかとなった．

*Framework for estimating potential wastes and secondary resources accumulated within an economy - A case study of construction minerals in Japan Reviewed

Seiji Hashimoto; Hiroki Tanikawa; Yuichi Moriguchi

Waste Management Vol. 29 ( 11 ) page： 2859-2866 2009.11

Language：English Publishing type：Research paper (scientific journal)

Material stocks in economic society are considered to represent a reserve for wastes and secondary resources. From the viewpoints of proper disposal and reutilization of stocked materials, accurate estima- tion of the amount of materials that will emerge as wastes or secondary resources in the future is impor- tant. We defined materials that have a high probability of emerging as wastes or secondary resources as ``potential wastes and secondary resources" and estimated that amount for construction minerals in Japan as a case study. The following conclusions were drawn. (1) We classified materials that are input into economic society into four categories: potential wastes and secondary resources, potential dissipated materials, dissipatively used materials, and permanent structures. By clarifying the latter three non- potential wastes and secondary resources, we performed a more accurate assessment of the wastes and secondary resources that will emerge in the future. (2) The share of potential wastes and secondary resources was estimated to be about 30% of all construction minerals that have been input into and accu- mulated in Japanese economic society. (3) Information related to potential dissipated materials and dis- sipatively used materials will provide fundamental knowledge to support analyses of the environmental impacts and resource losses which these materials might generate.

Framework for estimating potential wastes and secondary resources accumulated within an economy - A case study of construction minerals in Japan Reviewed

Seiji Hashimoto, Hiroki Tanikawa, Yuichi Moriguchi

WASTE MANAGEMENT Vol. 29 ( 11 ) page： 2859 - 2866 2009.11

Language：English Publishing type：Research paper (scientific journal) Publisher：PERGAMON-ELSEVIER SCIENCE LTD

Material stocks in economic society are considered to represent a reserve for wastes and secondary resources. From the viewpoints of proper disposal and reutilization of stocked materials, accurate estimation of the amount of materials that will emerge as wastes or secondary resources in the future is important. We defined materials that have a high probability of emerging as wastes or secondary resources as "potential wastes and secondary resources" and estimated that amount for construction minerals in Japan as a case study. The following conclusions were drawn. (1) We classified materials that are input into economic society into four categories: potential wastes and secondary resources, potential dissipated materials, dissipatively used materials, and permanent structures. By clarifying the latter three nonpotential wastes and secondary resources, we performed a more accurate assessment of the wastes and secondary resources that will emerge in the future. (2) The share of potential wastes and secondary resources was estimated to be about 30% of all construction minerals that have been input into and accumulated in Japanese economic society. (3) Information related to potential dissipated materials and dissipatively used materials will provide fundamental knowledge to support analyses of the environmental impacts and resource losses which these materials might generate. (C) 2009 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.wasman.2009.06.011

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４d-GISによる用途地域変更を考慮した建築物耐用年数の推計 Reviewed

寺南智弘，谷川寛樹，深堀秀敏

環境システム研究論文集 Vol. 37 page： 221-226 2009.10

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

高度経済成長期に大量投入されてきた建築物が更新時期を迎えるため，今後大量の建築副産物が発生す
ると危惧される．そこで，これまでにも統計情報を用いた耐用年数や建築資材蓄積量の推計が行なわれて
きた．しかし，統計情報からは建築物の滅失要因を特定することが困難であるという課題がある．本研究
では，より詳細に耐用年数・建築資材蓄積量を求めるためにGISを用い，地理情報の１つである用途地域
を考慮した推計を行なう．推計結果より，住居系用途地域における平均耐用年数は木造建築で35.1年，非
木造建築で27.2年となった．商業系用途地域においては木造建築が29.3年，非木造建築が21.1年となった．
また，工業系用途地域においては木造建築で21.9年，非木造建築で24.1年という結果が得られた．

全国の都道府県における地上と地下のマテリアルストック推計に関する研究 Reviewed

長岡耕平，稲津亮，東岸芳浩，谷川寛樹，橋本征二

環境システム研究論文集 Vol. 37 page： 213-220 2009.10

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

高度経済成長期に大量に蓄積された都市構造物の多くが耐用年数を迎え，今後廃棄物が大量に発生すると予想される．持続可能な社会を構築するためには廃棄物のフローや物質の投入量を少なく抑える必要がある．このため計画的に解体や撤去，修繕を行なう際，都市構造物の物質別でのストックを把握する必要がある．そこで本研究では，建築物・道路・下水道を対象に構造物の地上と地下へ投入，蓄積される資材量を統計データを用いて推計し，地上のストック量及び人間の目には触れない地下のストック量を明らかにする．その結果，1975年全体の地上ストックは25億トン，地下ストックは30億トンで，2005年の地上ストックは60億トン，地下ストックは76億トンであった．1975年と2005年のストック総量を比較すると2.5倍増加していることが分かった．

Development of an Urban Simulator for Achieving a Low Carbon City

Onishi Akio, Takahira Yosuke, Tanikawa Hiroki, Imura Hidefumi

Reports of the City Planning Institute of Japan Vol. 8 ( 2 ) page： 84 - 87 2009.9

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The City Planning Institute of Japan

In order to achieve a low carbon city, it is necessary to target residential and commercial sectors and transportation sector. It is also important to include aspects of mid- and long-term visions on urban planning and national land planning. Therefore, this study constructs a simulator to evaluate effects of reductions of CO2 emission by changing of urban structures and by introducing saving energy technology. Concretely, this study estimates energy consumptions and CO2 emissions from residential and commercial sectors of Nagoya city from 2000 to 2050 by 500-m meshes. By acquiring the results from this study, we can understand the potential of reduction of CO2 emission by changing of urban structures and by introducing saving energy technology. Also, we believe that it would be useful information for urban planning, especially for the prevention of global warming.

DOI： 10.11361/reportscpij.8.2_84

CiNii Research

Urbanization and subsurface environmental issues: An attempt at DPSIR model application in Asian cities Reviewed

Karen Ann Bianet Jago-on, Shinji Kaneko, Ryo Fujikura, Akimasa Fujiwara, Tsuyoshi Imai, Toru Matsumoto, Junyi Zhang, Hiroki Tanikawa, Katsuya Tanaka, Backjin Lee, Makoto Taniguchi

SCIENCE OF THE TOTAL ENVIRONMENT Vol. 407 ( 9 ) page： 3089 - 3104 2009.4

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER SCIENCE BV

This paper synthesizes existing information and knowledge on subsurface environments to understand the major cause and effect relationships of subsurface environmental issues by using the DPSIR (Driving force-Pressure-Status-Impact-Response) approach as the framework of analysis. Description is given to the major subsurface environmental issues common among the selected Asian cities (Bangkok, Jakarta, Manila, Osaka, Seoul, Taipei and Tokyo), such as excessive groundwater abstraction, land subsidence and groundwater contamination. The DPSIR framework is used to analyze the issues and problems of subsurface in key stages and suggestions are made for additional indicators to improve our description of the stages of urban development for the future. (C) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.scitotenv.2008.08.004

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*Urbanization and subsurface environmental issues: An attempt at DPSIR model application in Asian cities Reviewed

Karen Ann Bianet Jago-ona, Shinji Kaneko, Ryo Fujikura, Akimasa Fujiwara, Tsuyoshi Imai, Toru Matsumoto, Junyi Zhang, Hiroki Tanikawa, Katsuya Tanaka, Backjin Lee and Makoto Taniguchi

Science of The Total Environment page： 3089-3104 2009.1

Language：English Publishing type：Research paper (scientific journal)

This paper synthesizes existing information and knowledge on subsurface environments to understand the major cause and effect relationships of subsurface environmental issues by using the DPSIR (Driving force–Pressure–Status–Impact–Response) approach as the framework of analysis. Description is given to the major subsurface environmental issues common among the selected Asian cities (Bangkok, Jakarta, Manila, Osaka, Seoul, Taipei and Tokyo), such as excessive groundwater abstraction, land subsidence and groundwater contamination. The DPSIR framework is used to analyze the issues and problems of subsurface in key stages and suggestions are made for additional indicators to improve our description of the stages of urban development for the future.

Study of Accumulation / Distribution Tendency to the Material Stock of Construction Sector in All Prefectures and Mega Cities in Japan Reviewed

Nagaoka Kohei, Tanikawa Hiroki, Yoshida Noboru, Higashi Osamu, Onishi Akio, Feng Shi, Imura Hidefumi

Papers on Environmental Information Science Vol. ceis23 ( 0 ) page： 83 - 88 2009

Language：English Publishing type：Research paper (scientific journal) Publisher：Center for Environmental Information Science

Quantifying urban material stock and unveiling the input history of construction materials could provide a new basic dataset for urban area assessment. Construction materials of the buildings, roadways and sewer networks are estimated based on statistical data. In this paper, total mass of construction materials are estimated over time with country and prefecture scale. The results indicate that overall Prefectures of stock density is 116 (kg/m2), Mega cities stock density is 358(kg/m2). The proportion was seen by the stock per person and the gross GDP per person.

DOI： 10.11492/ceispapers.ceis23.0.83.0

CiNii Research

A Study on Changes of Urban Metabolism using Successive Spatial Data: Reviewed

Inazu Ryo, Tanikawa Hiroki, Onishi Akio, Higashi Osamu, Feng Shi, Imura Hidefumi

Papers on Environmental Information Science Vol. ceis23 ( 0 ) page： 89 - 94 2009

Language：English Publishing type：Research paper (scientific journal) Publisher：Center for Environmental Information Science

A large amount of construction minerals has been stocked as urban structures over time. In the near future, materials from demolished structures cause new material flow as it became waste, but the demands of recycling material related to roadway construction and maintenance have been decrease. Therefore, we estimated the volume of Material Stock Accounts of urban infrastructure over time by using four damnation GIS database. In addition, lifespan of urban structure by landuse type is estimated for predicting the future construction material balance. materials discharged from buildings is approximately 24 times larger compare to the demand of roadway's construction.

DOI： 10.11492/ceispapers.ceis23.0.89.0

CiNii Research

Analysis on Yearly Trend of Wide-Area Mileage of Biomass Industrial Waste and Its Reduction Possibility: Reviewed

Sato Masatoshi, Yoshida Noboru, Tanikawa Hiroki

Papers on Environmental Information Science Vol. ceis23 ( 0 ) page： 297 - 302 2009

Language：English Publishing type：Research paper (scientific journal) Publisher：Center for Environmental Information Science

In this paper, we defined wide-area transportation ton-kilometer that multiplied transportation distance by quantity of the transportation as wide-area transportation mileage of industrial waste and analyzed the possibility of it's reduction by using a linear minimization model. As a result, it was revealed that the wide-area transportation mileage of sludge could be reduced up to 80 % of total and up to 60% in the case of wood waste at most.

DOI： 10.11492/ceispapers.ceis23.0.297.0

CiNii Research

Urban stock over time: spatial material stock analysis using 4d-GIS Reviewed

Hiroki Tanikawa, Seiji Hashimoto

BUILDING RESEARCH AND INFORMATION Vol. 37 ( 5-6 ) page： 483 - 502 2009

Language：English Publishing type：Research paper (scientific journal) Publisher：TAYLOR & FRANCIS LTD

A huge amount of construction material is required in urban areas for developing and maintaining buildings and infrastructure. Ageing stocks, which were built during a period of rapid growth in Japan (1955-1973), will cause a new waste flow in the near future. In order to assess urban metabolism with regard to building and infrastructure, it is necessary to understand change in its material accumulation both 'spatially' and 'temporally'. In this analysis, material accumulation over time is elucidated using four-dimensional Geographical Information Systems (4d-GIS) data at an urban scale. An approximately 8km2 urban area of Salford in Manchester, UK, and 11km2 of Wakayama City centre, Japan, were selected as case study sites. In this analysis, the material stock of buildings, roadways and railways was estimated locally over time, using a 4d-GIS database: (1) to find the spatial distribution of construction materials over time, (2) to estimate the demolition curve of buildings based on characteristics of an area, and (3) to clarify material accumulation with vertical location, such as above and below ground, from the viewpoint of recyclability. By estimation of the demolition curve, the life span of buildings in an urban area was found to be shorter than the national average respectively at both sites: 81 years in the urban area of Salford compared with 128 years for the UK; and 28 years in Wakayama City centre compared with the Japanese national average of 40 years. In 2004, 47% of total construction material was stocked in underground infrastructure in Wakayama City centre.

DOI： 10.1080/09613210903169394

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Evaluation of Scrap Reclaimation from Urban Buildings from the viewpoint of TMR Reviewed

YAMASUE Eiji, MINAMINO Ryota, TANIKAWA Hiroki, DAIGO Ichiro, OKUMURA Hideyuki, ISHIHARA Keiichi N, Brunner Paul H

Abstracts for ILCAJ meeting Vol. 2009 ( 0 ) page： 104-104 2009

4d-GISによる用途地域変更を考慮した建築物耐用年数の推計 Reviewed

谷川寛樹

土木学会環境システム研究論文集 Vol. 37 page： 211 - 226 2009

複数年の空間情報を用いた都市重量の変化に関する研究-建築物・道路を対象とした和歌山市中心部でのケーススタディ- Reviewed

谷川寛樹

環境情報科学論文集 Vol. 23 page： 89 - 94 2009

全国の都道府県における地上と地下のマテリアルストック推計に関する研究 Reviewed

谷川寛樹, 橋本征二

土木学会環境システム研究論文集 Vol. 37 page： 213 - 220 2009

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Papers - TANIKAWA, Hiroki