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A Lateral Load Test on Seven Foot Diameter Caissons

by Paul R. Macklin, Colorado Dep of Highways, United States,
Nelson N. S. Chou, Colorado Dep of Highways, United States,



Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices

Abstract:

Seven foot (2.1 m) diameter caissons (drilled shafts) were designed to support a mainline eastbound bridge and an off-ramp of Interstate Highway 70 in Glenwood Canyon, Colorado. A lateral load test was proposed and completed during the construction phase of the project to evaluate the caisson construction method and the response of the caissons to the large lateral design loads. Soil parameters were back-calculated from load-deflection and inclinometer data using a p-y analysis. Based on the lateral load test results, the adjusted soil parameters permitted shortening of the caissons and an improved construction schedule.

Subject Headings: Lateral loads | Load tests | Load factors | Load bearing capacity | Caissons | Bridge tests | Construction methods | Colorado | United States

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