ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

Case Histories: Evaluation of Drilled Pier Integrity by the Stress Wave Propagation Method

by Larry D. Olson, CTL/Thompson Inc, Denver, CO, USA,
Robert W. Thompson, CTL/Thompson Inc, Denver, CO, USA,



Document Type: Proceeding Paper

Part of: Drilled Piers and Caissons II

Abstract:

The Stress Wave Propagation Method (SWPM) was used to nondestructively investigate the integrity of straight-shaft drilled pier foundations at two sites in the Denver, Colorado area. Drilled piers tested with the method were constructed using temporary steel casings seated into sedimentary bedrock. Near-surface inclusions indicated potential problems at one site. At the other site, a pier supported column settled nearly 3 inches when the third floor load was applied. Stress wave reflections were monitored with accelerometer receivers mounted on tops and sides of the piers, and geophone receivers embedded in the piers. Stress wave propagation tests with side-mounted or embedded receivers greatly aided in the interpretation of surface receiver responses. SWPM records are presented for a sound pier and a major defect at depth.

Subject Headings: Stress waves | Piers | Wave propagation | Shock waves | Surface waves | Case studies | Nondestructive tests | Colorado | United States | Denver

Services: Buy this book/Buy this article

 

Return to search