Research Team:
Armin Stuedlein
OSU, Department of Wood Science and Engineering
Liquefaction caused damage to 25,000 homes in the 2011 Tohoku earthquake in Japan and $15 billion in losses in Christchurch in 2010-11. This project will propose design guidelines for the use of timber piles, a timber product widely used for structural support of buildings, to mitigate liquefaction hazards. This approach has application in protecting a broad range of other structures, including port and harbor facilities, bridge approach embankments, and bridge foundations. While significant field-based experimental research has been conducted by the PIs to date, there does not exist a set of design guidelines to handle both the densification and reinforcement effect. The results of this research will be used by engineers who need to follow specific design guidelines to ensure that an appropriate liquefaction mitigation design can be provided.
This project seeks to formalize design procedures for engineers that wish to use the economically driven timber pile ground improvement alternative for the mitigation of earthquake-induced liquefaction but has dismissed this alternative owing to the lack of availability of such procedures. Specifically, the objectives are to: