Sections of the Going-to-the-Sun Road in Montana’s Glacier National Park
consist of up to 30-foot-high stone masonry retaining walls built in the 19th
century. In two avalanche-prone areas, the walls have been sheared and offset
horizontally. Guard walls are routinely blown out each year due to avalanche
debris. To achieve their project goal of stabilizing these areas, Orion Engineering
determined an avalanche load design based on SNOTEL data, survey
information, and modeling.
Using gINT, Orion created log reports from the comprehensive subsurface
investigation that was necessary for this project. The firm developed an
innovative micro-pile supported concrete road section design and incorporated
an avalanche-resistant reinforced concrete core wall into the guardrail section.
As the first avalanche-modeled solution for the area, the model can also be
transferred to other distressed areas. The site was ultimately chosen as a
demonstration project for micro-pile technology.
Project Financing, Vado Ligure Platform
Vado Ligure, Italy
The $439 million Vado Ligure platform in Italy is 210,000-square-meters
multipurpose marine platform housing a 720,000 TEU container terminal,
a 700-meter quay for post-Panamax ships, and a yard where automated
rail-mounted gantry cranes transfer containers. The project also includes a
290-meter-long bulk coal quay and 300-meter-long oil quay.
The platform must be built on a 12-meter layer of soft silt. Due to adverse
wave climate, the construction had to be precast as much as possible. Using
MicroStation and InRoads, Technital devised a solution with reinforced concrete
foundation caissons and piers, with a precast deck on top. The soil-bearing
capacity and limited vertical clearances for the rail-mounted gantry cranes
were achieved by preloading the foundation.