The California High Speed Rail system will connect San Francisco to Los Angeles with trains traveling up to 220 mph on grade-separated track. (Rendering courtesy of California High Speed Rail Authority).
GEO-Instruments is at work on a section of the project between Fresno and Bakersfield. The elevated tracks will be supported by large-bore piles. These are being constructed within 30 feet of the heavily-used, existing tracks.
To ensure operational safety, a real-time monitoring system was required to provide adequate warning to rail operators. GEO provided two systems for this purpose.
The first system was an array of GeoCloud wireless tiltmeters installed on a 300 foot span of track adjacent to the construction area. Data from the tiltmeters was used to model total track movement (twist and cant).
Lowering instrumented cage into the bore.