Development and Implementation of a High-Pressure, Double-Acting, Bi-Directional Loading Cell for Drilled Shafts Public Deposited

http://ir.library.oregonstate.edu/concern/articles/8336h658v

Access to this item has been restricted by repository administrators at the request of the publisher until March 31, 2017.

This is the publisher’s final pdf. The published article is copyrighted by ASTM International and can be found at:  http://www.astm.org/DIGITAL_LIBRARY/JOURNALS/GEOTECH/

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Drilled shaft foundation elements provide a cost-effective foundation alternative for the support of building and bridge superstructure loads. Bi-directional pile loading tests (BDPLTs) to evaluate the capacity of drilled shafts have become popular owing to their capacity to save time and effort as compared to the use of top-down loading tests. However, the use of BDPLTs requires that production shafts be post-grouted following testing in order to assure appropriate in-service performance. Commonly used single-acting loading cells and/or loading cell construction details can pose the potential for the development of voids following post-grouting due to their monotonic jacking action and large footprint. This paper described the development and use of high pressure bi-directional loading cells intended to minimize the possibility of post-test construction defects. First, a comparison was made between the single-acting and double-acting loading cells. Second, the results of laboratory calibrations on the pressurized loading cells were performed, as were component testing of the pumps, hoses, and hydraulic fluid synchronization lines. Then, the use of the new high pressure double-acting loading cells in production testing of instrumented shafts was described, and the efficacy of the new loading cells was illustrated. The new loading cells provided the profession with a load cell alternative for conducting BDLTs and should serve to help reduce the risk of post-test grouting defects in drilled shaft foundations.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Choi, Y., Lee, M., Nam, M. S., Kim, T., & Stuedlein, A. W. (2016). Development and Implementation of a High-Pressure, Double-Acting, Bi-Directional Loading Cell for Drilled Shafts. Geotechnical Testing Journal, 39(2), 196-205. doi:10.1520/GTJ20140166
Series
Keyword
Rights Statement
Publisher
Peer Reviewed
Language
Replaces

Relationships

In Administrative Set:
Last modified: 10/27/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items