Pittsburgh’s light rail expansion project dubbed the North Shore Connector Project has passed underneath the Allegheny River despite some earlier troubles. The cut and cover tunnel portion is complete, and the TBM bored portion of the tunnel is is approximately 80% complete. There is a short video and more details at the Pittsburgh Post-Gazette. (Photo by Bob Donaldson/Post-Gazette)
Seattle Tunnel Partners released a new schedule this week for the repair of the damaged seals on the Bertha Tunnel Boring Machine. This revised schedule shows that the TBM won’t be digging again until March […]
This is an interesting video of crews changing cutterhead teeth on the Bertha TBM beneath downtown Seattle. [Source: WSDOT YouTube Channel. Image: YouTube] Related
The International Journal of Geoengineering Case Histories has formally announced their second issue. Apparently when I posted about it previously, they had only two of the four papers.
This second issue contains four case histories that come with additional downloads. In particular, check out Dr. Edmund Medley’s Paper on the 2006 Hawaii Earthquakes. He has some neat photos including some in 3-D (more about his 3-D photos).
- Design Process of Deep Soil Mixed Walls for Excavation Support: Example of paper with digital data
- Effect of Dredging and Axial Load on a Berthing Structure
- Geological Engineering Reconnaissance of Damage Caused by the October 15, 2006 Hawaii Earthquakes: Example of an Online Database
- Lack of Maintenance Compromises Tunnel Structural Safety