Development and Preliminary Field Testing of Cyclic Borehole Shear Soil Test Device
Publication: Geo-Congress 2024
ABSTRACT
To help advance capabilities for measuring the in situ cyclic response of soils at chosen depths under controlled cyclic loading, a new prototype cyclic borehole shear test (CBST) device was developed in this study. Based on the monotonic BST device, the new CBST applies controlled normal and cyclic shear stresses to soil through serrated steel plates in contact with the wall of a 3-in. diameter borehole, while measuring the displacement of the shear plates as well as the shear stresses applied to the soil. Pore pressure is measured using a sintered porous disk embedded in one shear plate and hydraulically connected to a pressure transducer. Using the hardware and software control programs developed in this study, the capability of the prototype CBST device to measure the monotonic shear strength of soil is demonstrated, and preliminary results on the measured in situ soil behavior under cyclic loading conditions are presented.
Get full access to this article
View all available purchase options and get full access to this chapter.
REFERENCES
ASTM. ASTM D8296-19. (2019). Standard Test Method for Consolidated Undrained Cyclic Direct Simple Shear Test under Constant Volume with Load Control or Displacement Control. ASTM International, West Conshohocken, PA.
Ashlock, J. C., and Bechtum, T. (2011). Automated Borehole Shear Test Software User’s Guide-Version 1.0, Handy Geotechnical Instruments, Inc., 14 pp., May 2011.
Bechtum, T. (2012). Automation and Further Development of the Borehole Shear Test, MS Thesis, Iowa State University, Ames, IA. <https://doi.org/10.31274/etd-180810-794>(Sep. 27, 2023).
Dadashiserej, A., Jana, A., Ortiz, S. C., Walters, J. J., Stuedlein, A. W., and Evans, T. M. (2022). “Monotonic, cyclic, and post-cyclic response of willamette river silt at the Van Buren bridge.” Proc., Geo-Congress 2022: Geophysical and Earthquake Engineering and Soil Dynamics, GSP No. 334, ASCE, Reston, VA, 431–443.
Handy Geotechnical Instruments, Inc. (2002). Borehole Shear Test Instructions. Madrid, IA.
Handy, R. L., and Fox, N. S. (1967). “A soil bore-hole direct-shear test device,” Highway Research News, 27, 42–51.
Henke, W., and Henke, R. (1992). “Prototype cyclic torsional cylindrical shear tests”, Proc., Earthquake Eng. 10th World Conf., Balkema, Rotterdam, 1311–1316.
Henke, W., and Henke, R. (1993). “Laboratory evaluation of in situ geotechnical torsional cylindrical impulse shear test for earthquake resistant design”, Bulletin Seis. Soc. Amer., 83(1), 245–263.
Information & Authors
Information
Published In
Geo-Congress 2024
Pages: 198 - 208
History
Published online: Feb 22, 2024
ASCE Technical Topics:
- Cyclic tests
- Engineering fundamentals
- Field tests
- Geomechanics
- Geotechnical engineering
- Laboratory tests
- Load tests
- Material mechanics
- Material properties
- Materials engineering
- Shear strength
- Shear stress
- Shear tests
- Soil mechanics
- Soil properties
- Soil tests
- Strength of materials
- Stress (by type)
- Structural analysis
- Structural engineering
- Tests (by type)
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.