HNTB Corporation has brought on Jason YunLong Liu, Ph.D., as a senior technical advisor in the Seattle tunnel ventilation and fire life safety engineering group, where he’ll be based in the Bellevue, Wash., office.
Liu brings more than 20 years of experience in the field and has overseen the successful delivery of multiple tunnel ventilation projects from engineering through construction. Liu previously worked with HNTB on Seattle-area projects from 2011 to 2016.
“Jason brings knowledge, expertise and a commitment to innovation and safety,” said Kevin Collins, HNTB office leader and vice president. “His national and international tunnel ventilation experience provides our clients with innovative approaches and reinforces HNTB’s role as a leader in the tunnel ventilation industry. We are pleased to welcome Jason back to HNTB.”
Liu has led the concept design of tunnel ventilation systems and conducted detailed ventilation and fire safety design for road and railway tunnels. He has contributed to more than 100 infrastructure, commercial, industrial and residential developments across Australia, Canada, China, New Zealand, Saudi Arabia, Switzerland, Turkey and the United States.
Liu’s notable projects include detailed fire and life safety designs for Brisbane Airport Link Tunnel project, Melbourne Metro, Perth Rail Airport Link Tunnel, Sydney North Connex and West Connex Road Tunnel projects in Australia; Riyadh Metro Line 2 and Line 2 certification on behalf of the owner in Saudi Arabia; independent verification of Istanbul Cross Strait Tunnel Tube Project of Turkey; and the CFD analysis of the tunnel ventilation and fire-life safety design for Shenzhen Metro Line 4 in China.
As part of his contributions to the Washington State Department of Transportation’s Alaskan Way Viaduct Replacement Program, Liu was responsible for the detailed design of the SR 99 road tunnel ventilation and fire engineering, including analysis for fire-life safety, and performance analysis for the structural fire durability of the two-mile tunnel in downtown Seattle.
Liu was a post-doctoral fellow in mechanical engineering at University of Hawai’i at Manoa. He holds a Ph.D. in mechanical engineering from Tsinghua University, as well as both a Master of Science and a Bachelor of Science in mechanical engineering. Liu is a professional engineer licensed in Washington state. He holds certification licenses in New South Wales, Queensland, Victoria States in Australia, in the fields of mechanical engineering and fire safety engineering and is active in industry organizations. Most recently, he was elected as a Fellow of Engineers Australia.
