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About Nagai Laboratory Latest News

Nagai laboratory is a member of the Institute of Industrial Science, University of Tokyo and International Center for Urban Safety Engineering (ICUS), Social Infrastructure Management division.

We believe, the aim of the contineous expansion and development process of sustainable regeneration of society can be achieved by the knowledge and vision of social infrastructures to support the human lives. More specifically, in-depth research on performance of concrete material and structures; which is regarded as the backbone of the social infrastructure, and its application in the field of geotechnical engineering is the key. In addition, we are also working to address the maintenance method of social infrastructure facilities in the regions where, reducing population and aging is a major social problem. Japan is facing similar difficulties as population and infrastructures are aging rapidly in parallel. Nagai laboratory will continue to contribute to solve social issues with technical baseline considering social science aspects.

Nagai lab has experimental and testing laboratory inside the institute. Laboratory and student room is shared with Kishi Laboratory (Professor Kishi Toshiharu/Institute of Industrial Science, Human and social science division), and work is done together including regular seminars and events.

We accept students from the School of Engineering, Department of social infrastructure for Nagai laboratory. If you are interested to do undergraduate thesis or master's degree in the Nagai laboratory, please contact the Department of social infrastructure for the entrance exam, etc. If you want to know about laboratory and research content, please contact directly to Nagai laboratory.

The 8th Asia and Pacific Young Researchers and Graduates Symposium (YRGS2017) will be held on Institute of Industrial Science, The University of Tokyo.
http://www.nagai.iis.u-tokyo.ac.jp/YRGS/index.htm
 

2017/6/19  Staffs and 10 students from Southern Cross University, Australia, visited IIS. Nagai laboratory arranged the visit and had the exchanging party.

2017/6/16  New members!
Project Assistant Prof. Tsukasa MIZUTANI and Mr. Yuga SASAKI (bachelor course student) have joined Nagai laboratory.

2017/6/12   From National University of Civil Engineering (NUCE), Vietnam, Associate Prof. Nguyen Van Tuan (Vice Dean, Head of Building Materials Department), Dr. Tong Ton Kien, and Associate Prof. Nguyen Trong Lam (in Saitama Univ. now) visited Nagai lab for collaboration research meeting.

2017/6/9   Associate Prof. Nagai gave a presentation and joined the panel discussion in the IJEP Symposium (India-Japan Industry-Academia-Government Collaborative Education Program) (Koshiba Hall, Univ. of Tokyo).

Kohei Nagai "An Investigation of damage to sleepers in India by a student from Indian Railways"

2017/6/7   Mr. PIYAPHAT CHAEMCHUEN joined Nagai laboratory as an internship student from Chlalongkorn University, Thailand.
He will stay for two months.

2017/6/5   Ten students from IIT Hyderabad, Delhi, and Kanpur (India) visited Nagai lab.

2017/6/3   Associate Professor Kohei Nagai gave a lecture at IIS Open Campus.

Kohei Nagai "Current Status of Bridges in Japan and Future Maintenance"

2017/6/3  Students from Ichikawa High School visited our lab during IIS open Campus.

2017/5/30  Associate Prof. Nagai served as Associate Editor of the Journal of Disaster Research, Vol.12, No.3 'Special Issue on Infrastructure Maintenance, Renovation and Management'.
https://www.fujipress.jp/jdr/dr/

2017/4/14   Associate Professor Kohei NAGAI gave a lecture at National University of Civil Engineering (NUCE), Vietnam.

Kohei Nagai "Overseas expansion of infrastructure management technologies and systems from Japan - the case of Myanmar -"

2017/4/10   Associate Professor Nagai gives lectures of Advanced Concrete Engineering at Vietnam-Japan University, which is supported by JICA, during 10-21 April as a JICA short-term expert.

2017/3/23   Mr. Anupam Awasthi was awarded Dean’s Prize from the School of Engineering by his master course research "Investigation of premature cracking of sleepers in Indian Railways & countermeasures to improve their condition". He received the award in the graduation ceremony of Department of Civil Engineering.

2017/3/20   Associate Professor Kohei Nagai, Project Assistant Professor Koji Matsumoto, Mr. Punyawut Jiradilok, Mr. Takahiro Kashiwa participated in "Joint Seminar on Various Approach to Infrastructure Management between Civil Engineering Department, Chulalongkorn University and International Center for Urban Safety Engineering, The University of Tokyo" held at Chulalongkorn University, Bangkok, Thailand. The joint seminar is organized by Civil Engineering Department, Chulalongkorn University and International Center for Urban Safety Engineering (ICUS), The University of Tokyo.

Kohei Nagai "ICUS Projects for Infrastructure Management in Asia"
Punyawut Jiradilok "Development of Simulation Model for Durability Evaluation of Chloride Damaged Structures"
Takahiro Kashiwa "Analysis of Bridge Inspection Data for the Strategic Infrastructure Management in Rural City in Japan"

2017/3/15~16   Associate Professor Kohei Nagai, Project Assistant Professor Koji Matsumoto, and Ms. May Thazin Tun participated in "SIP/SATREPS-JPCI Joint International Seminar on Infrastructure Asset Management 'Present and Future Road Infrastructure Maintenance in Myanmar and Japan" held at Yangon Technological University, Yangon, Myanmar. The seminar is organized by International Center for Urban Safety Engineering (ICUS), The University of Tokyo.

Kohei Nagai "Activities of Infrastructure Management Group in SATREPS ANZEN Project"
Koji Matsumoto "Introduction of SIP project-Current state of infrastructure and future prospects in Japan and Asian countries"

2017/3/8   Associate Professor Kohei Nagai delivered a keynote speech in "The 3rd Conference of Saitama Prefecture Road Maintenance in 2016".

Kohei Nagai "Maintenance and Infrastructure Management in Rural Cities - Case Study: Maintenance Management of Bridges in Niigata Prefecture"

2017/2/15   Associate Professor Kohei Nagai gave a lecture at National Institute of Technology, Ichinoseki College.

Kohei Nagai "Aging and Maintenance of Infrastructures in Japan - Case Study: Bridges"

2016/12/22   Year End Party

2016/12/9~12   Nagai Lab members participated in "The Seventh International Conference on Science and Engineering (7th ISCE)"@Yangon, Myanmar.

Liyanto Eddy ・ Kohei Nagai ・ Koji Matsumoto ・Takeshi Miyashita ・ Win Bo "Report of Monitoring Results of Main Tower Inclination in Twantay Bridge, Myanmar"

2016/11/7~9   Nagai Lab members participated in "International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA)"@Tacloban City, Philippines.

Liyanto Eddy ・ Anupam Awasthi ・ Koji Matsumoto ・ Kohei Nagai ・ Shingo Asamoto "Mesoscopic analysis of different expansion causes in concrete by 3D rigid body spring model"
Kohei Nagai ・ Liyanto Eddy ・ Yi Yi Mon "Material analysis of fractured bolts in Ayeyarwady Bridge (Yadanarbon), Myanmar"

2016/10/30~11/2   Associate Professor Kohei Nagai, Assistant Professor Koji Matsumoto, Mr. Liyanto Eddy, Mr. Punyawut Jiradilok, and Mr. Anupam Awasthi participated and gave presentation in The 7th International Conference of Asian Concrete Federation (ACF 2016), held in Hanoi, Vietnam. In addition, SIP special session is also organized in this conference.

Liyanto Eddy ・ Koji Matsumoto ・ Kohei Nagai ・ Kohei Nagai ・ Takeshi Miyashita ・ Zin Naung Htun "A Proposal Of Installation Of Simple System For Monitoring Damaged Bridges In Myanmar"
Anupam Awasthi ・ Kohei Nagai ・ Shingo Asamoto ・ Seishi Goto "Study Of Possible Causes Of Premature Cracking Of Sleepers In Indian Railways"
Punyawut Jiradilok ・ Kohei Nagai ・ Koji Matsumoto ・ Liyanto Eddy "Development Of Rebar Corrosion Expansion Model Based On 3D RBSM Simulation"

2016/10/1   Mr. Osama Abdelfattah Hegeir, Ms. May Thazin Tun, Ms. Meng Yusin, Mr. Ahmed Okeil Mohammed Atia joined Nagai Laboratory.

2016/8/29~31   The University of Tokyo organized "The 11th Fib International symposium in Civil Engineering". Associate Professor Kohei Nagai became Secretary General of Organizing Committe of the symposium. The photos of the symposium can be seen on the following website.
http://concrete.t.u-tokyo.ac.jp/fib_PhD2016/index.htm

2016/8/5   Presentation of Masters' Final Defense. Anupam Awasthi won Furuichi award from Department of Civil Engineering in final defence of his Master's degree thesis.

Anupam Awasthi "Investigation of Premature Cracking of Sleepers in Indian Railways and Countermeasures to Improve Their Condition "

2016/5/30~6/1   Assoc. Prof. Kohei Nagai participated in International Association of Fracture Mechanics for Concrete and Concrete Structures (IA-FraMCoS), held in San Fransisco, University of California, Berkeley.

Kohei Nagai・Liyanto EDDY "A Study on The Effect of Diagonal Cracks Opening on The Failure Behavior of RC Beam-column Joint with Mechanical Anchorages by 3D RBSM」

2016/3/1~2   ICUS organized the 3rd SIP International Seminar on Infrastructure Asset Management 'Present and Future Road Infrastructure Maintenance in Cambodia and Japan' in Phnom Penh, Cambodia. Assoc. Prof. Kohei Nagai gave a presentation titled 'Introduction of SIP project - Current situation of infrastructure management in Japan and Asia'. In addition, a demonstration tour of inspection tools at real bridge sites was conducted on the second day. The demonstration tour was supported by Metropolitan Expressway Co. Ltd. (Shutoko) and Metropolitan Expressway Engineering Co. Ltd.

2016/2/15~16   Associate Professor Kohei Nagai, Project Assistant Professor Koji Matsumoto and Mr. Liyanto Eddy visited Yangon and Mandalay, Myanmar for investigating and setting the monitoring tools on the existing bridges as the mission for SATREPS project.

2016/2/9~10   Presentation of Bachelors' Final Defense

Riko Sakata "Investigation by Index for rationalization of Bridge Maintenance Management in Municipality using inspection data and spatial information"

2016/2/2~3   Presentation of Masters' Final Defense

Hirofumi Yamaguchi "Effect of Liquid Water Supply on Pull-out Failure Behavior of Deformed Bars in Concrete under Fatigue Loading"

2016/1/6~8  Associate Professor Kohei Nagai, Project Assistant Professor Koji Matsumoto and Mr. Hirofumi Yamaguchi participated in "EASEC-14 The Fourteenth East Asia - Pacific Conference on Structural Engineering and Construction ", held in Ho Chi Minh City, Vietnam and Mr. Hirofumi Yamaguchi gave a presentation.

Hirofumi Yamaguchi ・ Kohei Nagai ・Koji Matsumoto・Chijiwa Nobuhiro "Effect of Water Supply on Pull-out Failure of Deformed Bars in Concrete and ECC Under Fatigue Loading"

2015/12/14~15  Mr. Punyawut Jiradilok and Mr. Liyanto Eddy participated and gave presentation in "3rd International Conference on Computational Design in Engineering (CODE2015) ", held at IIS, The University of Tokyo, Japan.

Punyawut Jiradilok ・ Kohei Nagai "Numerical Simulation of Chloride Diffusion in Cracked Concrete based on Truss Network and RBSM"
Liyanto Eddy ・Kohei Nagai "Simulation of Failure Process of Reinforced Concrete Beam Column Joint with Mechanical Anchorages by 3D RBSM"

2015/12/12~13   Associate Professor Kohei Nagai, Project Assistant Professor Koji Matsumoto and Mr. Liyanto Eddy attended SATREPS (Science and Technology Research Panertship for Sustainable Development) meeting session during The 6th International Conference on Science and Technology held at Yangon Technological University, Myanmar. Pilot surveys for monitoring existing bridges in Myanmar were also conducted as the mission for SATREPS Project: Thaktut Bridge and Twantay Bridge.

2015/12/9   Mr. Hirofumi Yamaguchi won the excellent presenter award from the annual meeting 2015 JSCE, held on September 16th-18th 2015.

Hirofumi Yamaguchi ・ Kohei Nagai ・Koji Matsumoto・Chijiwa Nobuhiro "Effect of Water Supply on Pull-Out Failure of Deformed Bars in Concrete under Low Stress Fatigue Loading"

2015/12/4   Associate Professor Kohei Nagai gave a special presentation in ME training course symposium “The engineers training course for coming to life of infrastructures again, meeting regional needs” in Niigata City.

Kohei Nagai “Heading towards rationalization of bridge maintenance of municipalities in Niigata Prefecture”

2015/10/29~31   Assistant Professor Koji Matsumoto and Tao Wang participated in USMCA2015 (International Symposium on New Technologies for Urban Safety of Mega Cities in Asia) held at Nepal. The damaged situation about infrastructure of Nepal in the last year's earthquake was also introduced by NSET(National Society for Earthquake Technology-Nepal)

Tao Wang ・Koji Matsumoto・Kohei Nagai "Simulations of the pull-out performance of mechanical anchorages in concrete with damaged cracks by the discrete analysis"

2015/10/16~17   Associate Professor Kohei Nagai and Assistant Professor Koji Matsumoto participated in Symposium on Reliability of Engineering System (SRES'2015) held at Zhejiang University, Hnagzhou, China.

Kohei Nagai ・Liyanto Eddy "A Proposal of Local Reinforcing Bar Arrangement in RC Beam Column Joint with Mechanical Anchorage by 3D RBSM"
Koji Matsumoto ・Pornpen Limpaninlachat ・Junichiro Niwa "Flexural Strengthening Effect of Pretensioned UFC Panel on RC Beams with Seriously Reduced Steel Reinforcement"

2015/8/20~21   Mr.Punyawut Jiradilok and Assistant Professor Koji Matsumoto participated in 7th Asia Pacific Young Researchers and Graduates Symposium (YRGS 2015) “Innovations in Materials and Structural Engineering Practices” held at University of Malaya, Kuala Lumpur, Malaysia. Mr. Punyawut Jiradilok gave a presentation and received the award of “Asian Concrete Federation Best Paper Award”.

Punyawut Jiradilok ・ Kohei Nagai "Chloride Ion Penetration Simulation through Cracked Concrete based on Truss Network and RBSM"

2015/8/14   Presentation of Masters' Final Defense. Punyawut Jiradilok won Furuichi award from Department of Civil Engineering in final defence of his Master's degree thesis.

Punyawut Jiradilok "Chloride Ion Penetration Simulation through Cracked Concrete based on Truss Network and RBSM"

2015/8/13   Presentation of Doctors' Final Defense

Liyanto Eddy "Numerical Simulation of Failure of RC Beam-Column Joint by 3D RBSM"

2015/7/31~8/1   Nagai and Kishi Laboratory visited Shizuoka Prefecture for summer trip.

2015/7/14~16   Assoc. Prof Kohei NAGAI and Mr. Liyando Eddy have attended the JCI annual convention in Chiba prefecture. Mr. Eddy gave presentation in topic of "Effect of Stirrups Arrangement on Failure of Beam Column Joint with Mechanical Anchorages by 3D Discrete Model", and Assoc. prof. Nagai gave presentation instead of Mr. Koike in topic of "Analyzing Aging Degradation Trend Using the Bridge Inspection Data in Niigata Prefecture Municipalities".

2015/6/22~25   A visit tour (Public Works Research Institute, NEXCO central, Nagoya University, Gifu University) for guests from Thailand and Vietnam of educational programs of engineers for infrastructure maintenance was conducted as a part of activities in the SIP project.

2015/6/5~6   IIS Open Campus.

2015/6/1   Mrs. Riko Sakata and Mr. Shu Ito joined Nagai Laboratory.

2015/5/23   Associate Professor Kohei Nagai and Assistant Professor Koji Matsumoto participated in "International Symposium on Disaster Mitigation, Design and Maintenance for Infrastructures in Developing Countries", held at Yangon Technological University, Myanmar. Assistant Professor Koji Matsumoto gave a presentation.

Koji Matsumoto “Current Situation and Deterioration of Infrastructures in Japan”

2015/5/19   Assistant Professor Koji Matsumoto participated and gave presentation in "fib Symposium 2015", held at Tivoli Hotel & Convention Center, Copenhagen.

Koji Matsumoto “Effect of Shrinkage and Strength Development Histories on High Strength Concrete Beams in Shear”

2015/4/14  Associate Professor Kohei Nagai and Assistant Professor Koji Matsumoto, together with the member of the Diet of Japan: Mr. Kyuma (Council for Science, Technology and Innovation), SIP/PD: Prof.Fujino (Yokohama National University), SIP/SPD: Mr. Wakahara, and members of Cabinet Office of Japan paid a courtasy call on University of Transport and Communications (UTC) and National University of Civil Engineering (UNCE) as a part of SIP project.

2015/3/17   ICUS organized 2nd SIP International Seminar on Infrastructure Asset Management 'Present and Future Road Infrastructure Maintenance in Vietnam and Japan' held at National University of Civil Engineering (NUCE), Hanoi, Vietnam. This is the Vietnam version of the seminar that was held in Bangkok on March 11.

2015/3/11   ICUS organized 1st SIP International Seminar on Infrastructure Asset Management 'Present and Future Road Infrastructure Maintenance in Thailand and Japan' held at Chulalongkorn University, Bangkok. Associate Professor Kohei Nagai is the person in charge of ‘Strategic International Expansion of Asset Management’ of SIP project by Cabinet Office, Government of Japan ‘Comprehensive research on development of road infrastructure management cycle and its application in Japan and abroad (Representative: Prof. Koichi Maekawa)’ as the representative of Institute of Industrial Science, the University of Tokyo. Project Assistant Professor Koji Matsumoto also gave a presentation entitled "Deterioration of road infrastructures in Japan".

2015/3/6   Associate Professor Kohei Nagai gave presentation in "3RD CE SYMPOSIUM 2015 'NEW FRONTIERS IN INFRASTRUCTURE MANAGEMENT'" organized by International Students Association, Department of Civil Engineering, The University of Tokyo.

Kohei Nagai “Current state and issues of bridge management in Japan”

2015/2/28   Title of “PUBLIC MIND HOME”(Representative: Satoshi Ajika), which Associate Professor Kohei Nagai submitted collaboratively to Association for Promotion of Infrastructure Geospatial Information Distribution Urban Data Challenge 2014, was awarded a civil engineering informatics special prize (Committee on Civil Engineering Informatics, JSCE).

2015/2/23   Associate Professor Kohei Nagai gave presentation in "JICA FRIENDSHIP SYMPOSIUM on Sustainable Infrastructure" held at IIT Hyderabad, India.

Kohei Nagai “Numerical Simulation of failure of RC beam column-joint by discrete analysis method”

2015/2/19   Associate Professor Kohei Nagai attended the 25th lecture meeting of infrastructure-innovation research society with topic “Research Initiative for Advanced Infrastructure with ICT” held at Social Cooperation Course, Graduate School of Interdisciplinary Information Studies, The University of Tokyo as a lecturer and panelist.

Kohei Nagai “Actual situation of bridge maintenance management in local municipalities and the possibility for the application of ICT ”

2015/1/30   Liyanto Eddy won award from the 16th International Summer Symposium of JSCE, held on September 10th-12th 2014

Liyanto Eddy ・ Kohei Nagai "Numerical Simulation of A Beam Column Joint with Complex Reinforcement Arrangement by 3D Discrete Model"

2015/1/23   Associate Professor Kohei Nagai gave special presentation in "Report meeting of "Michimori" training unit activities '〜How to keep regional roads〜'", held at Nagasaki University.

Kohei Nagai "Actual situation of bridge maintenance management in local municipalities and its future direction"

2015/1/16   Dr. Yasushi Tanaka and Dr. Koji Matsumoto joined Nagai Laboratory

2014/12/19   Year End Party

2014/11/14   Nagai Lab members participated in Open Campus of Kishi Laboratory in Chiba

2014/11/2~6   Mr. Punyawut Jiradilok gave presentation in "International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA)", held at Yangon, Myanmar

Punyawut Jiradilok ・ Kohei Nagai 「An Investigation on The Influence of Some Parameters in Simulation of Chloride Ion Penetration in Concrete Based on Truss Network Model」

2014/10/1   Mr. Anupam Awasthi joined Nagai Laboratory.

2014/9/21~24   Mr. Liyanto Eddy gave presentation in "The 6th International Conference of Asian Concrete Federation", held at Seoul, Korea

Liyanto Eddy ・ Kohei Nagai 「Numerical Simulation of Failure of Beam Column Joint with Complex Reinforcement Arrangement by 3D Discrete Model」

2014/9/10~13  Mr. Liyanto Eddy participated in 2014 International Workshop for Young Civil Engineer 「Facing the Challenges of Our Future Society」
Workshop Co-ordinator: Associate Prof. NAGAI Kohei.

2014/9/10  Mr. Liyanto Eddy gave presentation in "The 16th International Summer Symposium in 2014", held at Osaka University Japan

Liyanto Eddy ・ Kohei Nagai 「Numerical Simulation of A Beam Column Joint with Complex Reinforcement Arrangement by 3D Discrete Model」

2014/9/8  Associate Professor Kohei Nagai became a Keynote Speaker for Urban Data Challenge 2014「解くべき課題をテーマごとに掘下げよう(農林・まちづくり)-テーマ別アイデアソン-」.

2014/8/30  Nagai and Kishi Laboratory participated in Concrete Canoe Competition, organized by JSCE Kanto area.

2014/8/17~19  Nagai and Kishi Laboratory visited Yamanashi Prefecture for Summer camp.

2014/7/31~8/1   Mr. Tao Wang gave presentation in "The 6th Asia and Pacific Young Researchers and Graduates Symposium", held at SIIT (Rangsit Campus), Thammasat University Thailand

Tao Wang ・ Liyanto Eddy ・ Kohei Nagai 「Numerical Simulation of Failure of Beam Column Joint with Mechanical Anchorage by 3D Discrete Analysis」

2014/7/16~20   Associate Professor Kohei Nagai gave presentation in "1st International Conference on Infrastructure Failures and Consequences (ICIFC)", held at Melbourne, Australia

Ram Chandra Neupane ・ Kohei NAGAI ・ Liyanto Eddy 「Governing Parameters of Various Strengthtening Approaches Applied for RC Corbles Subjected to Local Failure Criterion」

2014/7/9~11   Mr. Liyanto Eddy gave presentation in "JCI Annual Convention", held at Takamatsu

Liyanto Eddy ・ Kohei NAGAI ・ Ram Chandra Neupane 「A Study On Residual Capacity of Reinforced Concrete Corbel Failed by Anchorage Splitting Failure」

2014/6/5~7   IIS Open Campus.

2014/5/13   Mr. Yamaguchi Hirofumi and Mr. Koike Mato joined Nagai Laboratory.

2014/3/27~28   Spring trip at Linear-Express Museum.

2014/3/14   Farewell Party.

2014/3/6   Nagai lab members joined JCI Symposium with the topic “Guideline for inspection maintenance and retrofitting of cracking in reinforced concrete structure” at University of Ryukyus, Nakagami district, Okinawa prefecture.

2013/2/17~18   Presentation of Bachelors' Final Defense

Mari Nakashima 「Bridge Maintenance Management in Municipality and Investigation by Index of Decision Making」

2013/2/12~13   Presentation of Masters' Final Defense

Ram Chandra Neupane 「A Study on Reinforced Concrete Corbel Subjected to Local Failure Criterion and Its Residual Performance and Retrofit」

Yoshiyuki Takano 「An Investigation of Shear Performance under Stress Rotation Field with Effective Mix Proportion of Fibers and Coarse Aggregate in SHCC」

2013/1/18   Ms. Mari NAKASHIMA gave presentation in "Joint Seminar with Shibaura Institute of Technology"

Mari NAKASHIMA・ Kohei NAGAI 「Factual research on decision making on bridge management in municipalities in the case of Niigata」

2013/12/20   Year End Party

2013/12/06   Ms. Yukari Yagi, alumna of Nagai Laboratory, was awarded the "SSMS Outstanding Paper Award" by a journal paper based on her undergraduate thesis. Ms. Yagi received a plaque and a certificate at the awards ceremony in "9th International Symposium on Social Management Systems", held at Sydney, Australia on December 2nd-5th 2013.

Yukari YAGI ・Kohei NAGAI ・ Naofumi SUZUKI ・ Petr MATOUS 「A Survey of Social Support Networks in a Depopulating Japanese Village, Journal of Society for Social Management Systems」

2013/12/06   Ms. Mari NAKASHIMA participated and gave presentation in "9th International Symposium on Social Management Systems", held at Sydney, Australia on December 2nd-5th 2013

Mari NAKASHIMA・ Kohei NAGAI 「An Investigation of Road Bridge Maintenance System in Japan in Developed Society」

2013/11/29   Yoshiyuki Takano won award from the 15th International Summer Symposium of JSCE, held on September 4th-6th 2013

Takano Yoshiyuki ・ Rieko Kojima ・ NAGAI Kohei「Shear Performance of Pre-damaged PVA-Aggregate Mixed ECC Beam」

2013/11/12   Nagai Lab members visited Sho-bond Corporation in Tsukuba

2013/11/8   Nagai Lab members participated in Open Campus of Kishi Laboratory in Chiba

2013/11/6   Nagai Lab members joined the bridge inspection, conducted by Shutoko Metropolitan Expressway Company Limited

2013/10/17  Nagai Laboratory's Facebook has been launched

2013/10/8〜11  Nagai Lab members participated in "International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA)"@Hanoi, Vietnam

NAGAI Kohei ・ EDDY Liyanto ・ IKUTA Koichiro 「A study of the influence of the bending radius of reinforcement bar on the failure mechanism of L-shaped beam column joint by 3D discrete analysis」

EDDY Liyanto ・ NAGAI Kohei 「A study of the behavior of a beam column joint with complex arrangement of reinforcing bars by finite element analysis」

2013/10/1   Mr. Por and Mr. Wang joined Nagai Laboratory

2013/9/19〜20  Nagai Lab members participated in "International Conference on Civil, Structural and Environmental Engineering"@Istanbul, Turkey
BAIG Umair ・ NAGAI Kohei 「Effect of Self-Compacting Concrete and Aggregate Size on Anchorage Performance at Highly Congested Reinforcement Region」

2013/9/5〜6   Nagai Lab members participated in National convention of Japan Society of Civil Engineers[JSCE]

Ikuta Koichiro ・ NAGAI Kohei ・ Fujiyama Chikako「An Analytical Investigation of Influence of Bending Radius of Reinforcement on Failure Mechanism in L Beam-Column Joint by FEM」 

NEUPANE Ram Chandra ・ NAGAI Kohei「Non-Linear FE Analysis of Reinforced Concrete Corbels Retrofitted with CFRP」

Rieko Kojima ・ Takano Yoshiyuki ・ NAGAI Kohei「Application of Image Analyzing System to Shear Tests of HPFRCC Beams」

Takano Yoshiyuki ・ Rieko Kojima ・ NAGAI Kohei「Shear Performance of Pre-damaged PVA-Aggregate Mixed ECC Beam」

Umair BAIG ・ NAGAI Kohei「Anchorage Performance of Reinforcement with Vulnerable Area at Highly Congested Reinforcement Region」

Eddy Liyanto ・ NAGAI Kohei ・ Ikuta Koichiro「Mesoscale Simulation of Tension Stiffening Effect of Reinforced Concrete by 3D Discrete Model」

Kimura Sunya ・ Nagayama Tomonori ・ Yozo Fujino(A Presentation on his Graduation thesis of Bridge Laboratory)「スマートフォンによる角速度計測を利用したVIMSの汎用化と路面の局所変状評価/東 京大学大学院工学系研究科社会基盤学専攻」 [Japanese]

2013/9/5   Workshop on Your Career as a Civil Engineer and Our Future Society The 15th Int'l Summer Symposium in 2013
Workshop Co-ordinator: Associate Prof. NAGAI Kohei.

2013/9/4  Nagai Lab members attended following symposium and workshops held at national convention of Japan Society of Civil Engineers.
International Panel Discussion on "Infrastructure Maintenance and Renewal for Achiving Sustainable Society"

2013/8/13   Umair BAIG won Furuichi award from Department of Civil Engineering in final defence of his Master's degree thesis.
Thesis Title: 「An experimental investigation on anchorage performance with vulnerable area in highly congested reinforcement region」 

2013/8/8〜10   Kishi-Nagai lab jointly organised summer camp at Korobe Dam and around.  

2013/8/6〜7   Paper presented on "6th Joint Student Seminar on Civil Infrastructure" at bangkok.

Kimura Sunya 「Three-dimensional simulation of flow of fresh concrete in multi-dimensional steel bar arrangement by MPS」
 
Nakashima Mari 「An investigation of road bridge maintenance system in Japan in developed society」

2013/8/1  アーバンデータチャレンジ東京2013ワークショップ「先進事例をもとに解くべき課題 を考えよう!」(主催:社会基盤情報流通推進協議会) にて,長井准教授が,事例紹介&グループディスカッションのインフラグループにて 話題提供講演をしました。 

2013/7/31  長井准教授が幹事長を務めたJCI研究委員会の報告会,「コンクリート構造物のひび割れ進展評価手法」に関するシンポジウム が東京大学小柴ホールで開催されました。長井准教授が委員会活動報告をしました。 

2013/7/9〜10  国際圧入学会(IPA)主催の、「第6回IPA国際圧入セミナー」及び「2nd INTERNATIONAL WORKSHOP for Young Researchers」(高知)に参加しました
木村俊也  「Experiment and Numerical Analysis of Pile Penetration」

2013/7/10  コンクリート工学年次大会(名古屋)にて,長井准教授が発表しました。
生田(卒業生)の代理  「L字型RC柱梁接合部の破壊性状に及ぼす鉄筋曲げ内半径の影響に関する解析的研究」

2013/7/2  香港理工大学の戴建国博士が来日しました。研究室に約2ヶ月間滞在されます。 

2013/6/26  土木研究所 構造物メンテナンスセンター(CAESAR)に見学に行きました。 

2013/6/21  修士二年のUmair君がADBのフォーラム"The 6th ADB-JSP Scholar's Research Forum: Creating Valuable Impact to My Community and My Peaple"で発表しました。 
Umair Baig  「Anchorage Performance of Reinforcement at Highly Congested Reinforcement Region」

2012/12/7  長井准教授が4th IPA (International Press-in Association) International Workshop(シンガポール)にてIPA Research Grant Award(研究助成賞)を受賞しました. 

2012/12/5  長井准教授と林元研究員(現清水建設)がThe 4th Asia-Pacific Young Researchers & Graduates Symposium (Hong Kong)にてBest Paper Awardを受賞しました.. 
長井宏平、林大輔  「An Analytical Investigation of Anchorage Performance of Mechanical Anchorage by 3D Discrete Model」 

2012/11/19  修士二年の生田君が"土木学会年次学術講演会優秀講演者賞"を受賞しました. 
Ikuta Koichiro  「Three-Dimensional Analysis of Flow of Fresh Concrete as Two Phase Model by MPS」 

2012/10/10〜12   国際シンポジウム "International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA)"@ウランバートルにて発表しました. 
修士二年の生田君が"Excellent Young Researcher Award"を受賞しました.


Ikuta Koichiro   「Numerical Simulation of Beam-Column Joint with Simple Reinforcement Arrangement by Three-dimensional RBSM」 

Takano Yoshiyuki  「Shear Performance of PVA-Coarse Aggregate-ECC Beams Under a Rotating Stress Field」  

2012/10/1  メンバー更新しました. 

2012/9/28  Prometech Simulation Conference 2012にて講演しました.
長井宏平  「Particleworksによる二相モデルとしたコンクリート材料の流動解析」   

2012/9/28  岸研究室と合同で,「東京工業大学大学院 理工学研究科 土木工学専攻 二羽研究室」,「東京大学大学院 工学系研究科 社会基盤学専攻 コンクリート研究室」との研究交流会を行いました. 

2012/9/25  第36回エコ・コンクリートカヌーコンペに岸研と合同で参加しました.
特別賞を頂きました.   

2012/9/20  "「繊維補強セメント系複合材料の新しい利用法」に関するシンポジウム"に参加しました.
Takano Yoshiyuki  「粗骨材を混入したPVA-ECC梁の初期損傷導入時のせん断特性」 

2012/9/19  生産技術研究所/中埜研究室との合同勉強会を開催しました.  

2012/9/5〜7  土木学会全国大会@名古屋大学のインターナショナルセッションにて発表しました.

林大輔  「Three-Dimensional Simulation of Crack Formation at Anchorage Zone with Mechanical Anchorage」

Ikuta Koichiro  「Three-Dimensional Analysis of Flow of Fresh Concrete as Two Phase Model by MPS」   

Takano Yoshiyuki  「Shear Performance of PVA-ECC Beams that Mixed with Coarse Aggregate」

2012/8/20〜21  "5th Joint Student Seminar on Civil Infrastructure"@バンコクにて発表しました.
修士一年の野君が"Excellent Presentation Award"を受賞しました.


Takano Yoshiyuki  「An Analytical Investigation of Anchorage Failure of RC Confined by Transverse Bar by 3D RBSM」 

Kojima Rieko   「Shear Fatigue Performance of PVA-ECC Beam Mixed with Aggregate under Pre-cracked Condition」

2012/8/19〜21   Kishi-Nagai lab joint summer camp is held.   

2012/5/15    Member list is updated to homepage.     

2012/4/13   HOME写真追加しました.   

2012/4/5    Nagai Lab HOME PAGE is launched.    


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