Yilong Cao, Ph.D. in System Engineering, currently works at the State Key Laboratory of Mountain Bridge and Tunnel Engineering(MBTE), Chongqing Jiaotong University. He leads a provincial-level talent program and a national-level specialist project. His main research focuses on the design and development of lifecycle management systems for railway structures, as well as the system design and development for the efficient, intelligent, safety and maintenance of infrastructure. His related research achievements have been successfully applied in iconic projects in Japan, such as the renovation of the Omiya Bridge in Ehime Prefecture (Japan Society of Civil Engineers Historical Heritage) and the repair of the Ashihara Onsen Station on the Hokuriku Shinkansen in Fukui Prefecture, proving their effectiveness. He was awarded the Best Paper Award by the Japan Society of Experimental Mechanics in 2022.

He as an expert in seismic performance assessment of railway structures in Japan, led or participated in the detailed design of railway structures and assessment of existing structures both domestically and internationally. He has also deeply engaged in digital transformation project in railway system with top companies and research institutions in Japan (such as RTRI, JR East, Tokyu Corporation, etc.). By 2024, he had been responsible for structural damage ratings, repairs, and strengthening in design over 60 major and well-known projects in Japan. Those achievements include: the construction of the Tokyo Haneda Airport Express Line, the construction of the Hokkaido Shinkansen, the renovation of the Sapporo hub station (including the addition of a new Shinkansen station in Sapporo), the reinforcement of the Tokyo Tokyu Den-en-toshi Line, and the renovation of underground structures in the Tokyo Metro (such as Shinjuku, Ginza Yurakucho, and Iidabashi stations).

Since March 2025, he has served as a board member of the Association of Chinese Doctors in Japan, dedicating efforts to the importing and localization of advanced non-destructive testing technologies and methods of repair and reinforcement, as well as facilitating in academic archivements and promoting in industry-academia-research collaborations.

Publications:

1. Cao, Y., Nishimura, A., Luo, X., Okoshi, M., Nishimura, H. (2021). "Study on the Creation of a Roadmap Model that Quantifies the Mechanical Behavior of RC Beams under Damage." Experimental Mechanics, Vol. 21, No. 3, pp. 199-207.

2. Cao, Y., Nishimura, A., Luo, X., Okoshi, M., Nishimura, H. (2022). "Experimental Study on the Influence of Artificial Deterioration on the Load-Carrying Capacity and Deformation Performance of RC Beams." Advanced Experimental Mechanics, Vol. 7, pp. 149–154.

3. Cao, Y., Nishimura, A., Luo, X., Okoshi, M., Nishimura, H. (2023). "An Experimental Study on the Repair Evaluation of Deteriorated RC Beams Using Natural Frequency and Mechanical Behavior Related to Damage Condition." Lecture Notes of Civil Engineering, Springer.

International Conferences:

1. Cao, Y., Nishimura, A., Luo, X., Okoshi, M., Nishimura, H. (2022). "Experimental Study on a Roadmap Model to Describe the Mechanical Behavior Related to Condition of Damage and Reusing Focus on Deteriorated RC Beam in Quantitative." Proceedings of fib 6th International Congress, Oslo.

2. Cao, Y., Nishimura, A., Luo, X., Okoshi, M., Nishimura, H. (2022). "Experimental Study on Quantitative Evaluation of Repair in RC Beams with Deterioration Using Natural Frequency and Mechanical Behavior Related to Condition of Damage." 76th RILEM Annual Week 2022 and International Conference on Regeneration and Conservation on Structures (ICRCS), Kyoto.

3. Cao, Y., Nishimura, H., Nishimura, A., Luo, X., Okoshi, M. (2020). "Study on the Effects of RC Member Deformation Based on Static Loading Experiments (Research Overview and Experimental Methods)." Proceedings of the 75th Annual Academic Conference of the Japan Society of Civil Engineers.

4. Luo, X., Okoshi, M., Nishimura, A., Cao, Y., Nishimura, H. (2020). "Study on the Effects of RC Member Deformation Based on Static Loading Experiments (Experimental Results and Analysis)." Proceedings of the 75th Annual Academic Conference of the Japan Society of Civil Engineers.

Projects (Selected):

1. Tokyu Railway Line Digitalization Project (BIM Application for Structural Reinforcement Engineering), ¥220,000, Tokyu Design Consulting Co., Ltd., Dec 2022–May 2023.

2. Tokyu Railway Line Elevated Bridge Reinforcement Project (Seismic Performance Assessment and Simulation), ¥1.88 million, Tokyu Design Consulting Co., Ltd., Apr 2023–Mar 2024.

3. Haneda Airport Express Line Construction Project (Seismic Performance Assessment and Simulation), ¥950,000, JR East Consulting Co., Ltd., Apr 2022–May 2024.

4. Tokyo Metro Ginza Yurakucho Station Underground Structure Renovation (Damage Rating of Box Structures), ¥180,000, Japan Transport Technology Co., Ltd., Jan 2023–May 2023.

5. Embedded Development of Backend Program for 3D Seismic Analysis Software ISAS, ¥2 million, JR East Consulting Co., Ltd., Apr 2023–Apr 2024.

6. Hokkaido Shinkansen Construction Project (Routine Design, Seismic Performance Assessment, and Simulation), ¥850,000, JR Hokkaido Consulting Co., Ltd., Dec 2021–Oct 2022.

7. Tohoku Shinkansen Elevated Bridge Reinforcement Project (Seismic Performance Assessment and Simulation), ¥1.2 million, JR East Japan Consulting Group, Jul 2024–Jan 2025.

8. Tokyo Metro Iidabashi Station Underground Structure Renovation Project (Damage Rating of Box Structures), ¥500,000, Japan Transport Technology Co., Ltd., Jul 2024–Mar 2025.