・ Contract Research
■Sub-Committee
・Committee on Design Guidelines for Joints of Prestressed Concrete 　　Continuous U Shaped Girder Composite Bridges (finished in July,2022）
・ Committee on Rehabilitation, Repair and Reinforcement of Existing Post-Tensioned 　　 Bridges
・ Committee on Application of Continuous Fiber Reinforcement to Prestressed Concrete 　　 Structure (finished in September, 2020)
・ Committee on Technical Study of Precast Prestressed Concrete Deck for Replacement 　　(finished in September, 2018)
・ Committee on Design and Construction Guidelines for Prestressed Concrete Bridge 　　 with Polymer-Duct System (finished in September, 2015)
・ Committee on Solution of Grout Defect Problem in Post-Tensioning Prestressed 　　 Concrete Bridge in Service (finished in September, 2016)
・ Committee on Guidelines for Design and Execution of Grouting for Prestressed 　　 Concrete Structures (finished in February, 2013)
・ Committee on Guidelines for Application of Anti-Corrosive Material Coated Prestressing 　　 Steel to Prestressed Concrete Box Girder Bridge (finished in July, 2012)
・ Committee on Guidelines for Maintenance of Cable-Stayed Bridge and Extradosed 　　 Bridge (finished in April, 2011)
・ Committee on English Edition of Standard for Design and Construction of Cable-Stayed 　　 Bridge and Extradosed Bridge (finished in March, 2011)
・ Committee on Application of High-Strength Prestressing Steel to Prestressed Concrete 　　 Structures (finished in June, 2011)
・ Committee on Design and Construction for Prestressed Concrete Structures Using 　　 Highstrength Concrete (finished in December, 2008)