MICROPILE LOAD TESTING AND INSTALLATION MONITORING AT THE CATS VEHICLE MAINTENANCE FACILITY

摘要

A three-story building was founded on 19.1 cm (7? in) diameter micropiles socketed 4.3 m (14 ft) into the underlying bedrock to meet the strict settlement requirements for a light rail system. A static load testing program consisting of three test piles located across the site was conducted to verify design assumptions concerning micropile axial loading and settlement. In addition, extensive installation monitoring was conducted during micropile installation. The results of the micropile load testing program showed that micropile installation could have a significant influence on pile top load-displacement relationships and pile capacity. Therefore, an extensive production pile monitoring program was conducted to verify proper micropile installation.