Title:
Evaluation of In-Place Stress in Concrete by Incremental Hole Drilling
Author(s):
Ashutosh G. Dabli, Abhay N. Bambole, and Kamalkishor M. Bajoria
Publication:
Materials Journal
Volume:
117
Issue:
4
Appears on pages(s):
27-35
Keywords:
finite element method; in-place stress; incremental hole drilling method; nondestructive testing; strain relief
DOI:
10.14359/51724612
Date:
7/1/2020
Abstract:
The use of strain relief method is one of the most direct methods for determination of in-place stresses. In this method, a hole is drilled in the concrete member and the change in strain in the vicinity of the hole, on the surface of the member, is measured by means of electrical resistance strain gauges (ERSG). This change in strain due to drilling is used to assess the in-place stress in the member using constitutive relationship and calibration coefficient. This paper presents the experimental application of incremental hole drilling method (IHDM) in concrete under uniaxial stress. A small hole of 25 mm diameter and 40 mm deep was drilled incrementally to estimate the in-place stress in an axially loaded column with minimum damage. Dry drilling was used to eliminate the effect of swelling due to moisture (water) during the drilling. The experimental strain released was then correlated with an analytical solution using the theory of elasticity and finite element method (FEM). The excellent agreement of experimental results with analytical and numerical values of strain released suggests that IHDM can be conveniently used to evaluate in-place stresses in columns.
Related References:
1. Chen, A., and Schumacher, T., “Estimation of In-Situ Stresses in Concrete Members Using Polarized Ultrasonic Shear Waves,” AIP Conference Proceedings, V. 1581, No. 1, 2014, pp. 903-908.
2. Zhang, F. P., and Qiu, Z. G., “Analysis of Measuring Existing Stresses in Concrete Structure by Hole Drilling Core Surface Strain Gauge Method,” Materials Research Innovations, V. 15, No. 1, 2011, pp. 601-604.
3. Mathar, J., “Determination of Initial Stresses by Measuring the Deformations Around Drilled Holes,” Transactions of the American Society of Mechanical Engineers, V. 56, No. 2, 1934, pp. 249-256.
4. McGinnis, M. J.; Pessiki, S.; and Turker, H., “Application of Three-Dimensional Digital Image Correlation to the Core-Drilling Method,” Experimental Mechanics, V. 45, 2005, pp. 359-367.
5. Rumzan, I., and Schmitt, D. R., “Three-Dimensional Stress-Relief Displacements from Blind-Hole Drilling: a Parametric Description,” Society for Experimental Mechanics, V. 43, No. 1, 2003, pp. 52-60. doi: 10.1007/BF02410484
6. Beghini, M.; Bertini, L.; and Mori, L. F., “Evaluating Non-Uniform Residual Stress by the Hole-Drilling Method with Concentric and Eccentric Holes. Part II: Application of the Influence Functions to the Inverse Problem,” Strain, V. 46, No. 4, 2010, pp. 337-346. doi: 10.1111/j.1475-1305.2009.00684.x
7. ASTM E837/E837M-01, “Standard Test Methods for Determining Residual Stresses by the Hole-Drilling Strain-Gauge Method,” ASTM International, West Conshohocken, PA, 16 pp.
8. Ito, T.; Funato, A.; Tamagawa, T.; and Tezuka, K., “Elastic Deformation of Core Sample with Stress Relief by Drilling and its Application to Rock Stress Estimation,” 23rd Formation Evaluation Symposium of Japan, 2017.
9. Parivallal, S.; Ravisankar, K.; Nagamani, K.; and Kesavan, K., “Core-Drilling Technique for In-Situ Stress Evaluation in Concrete Structures,” Experimental Techniques, V. 35, No. 4, 2011, pp. 29-34. doi: 10.1111/j.1747-1567.2010.00622.x
10. Rickert, T., “Residual Stress Measurement by ESPI Hole-Drilling,” Procedia CIRP, V. 45, 2016, pp. 203-206. doi: 10.1016/j.procir.2016.02.256
11. Shin, H.-C.; Vincent, C.; and Farshad, A., “Measurements of Strain Relief in Concrete Cubes with Slot Cutting,” Journal of Applied Sciences Research, V. 6, No. 12, 2010, pp. 2151-2163.
12. Nau, A., and Scholtes, B., “Evaluation of the High-Speed Drilling Technique for the Incremental Hole-Drilling Method,” Experimental Mechanics, V. 53, No. 4, 2013, pp. 531-542. doi: 10.1007/s11340-012-9641-1
13. McGinnis, M. J., and Pessiki, S., “Experimental Study of the Core-Drilling Method for Evaluating In Situ Stresses in Concrete Structures,” Journal of Materials in Civil Engineering, ASCE, V. 28, No. 2, 2016, p. 04015099. doi: 10.1061/(ASCE)MT.1943-5533.0001294
14. Trautner, C.; McGinnis, M.; and Pessiki, S., “Analytical and Numerical Development of the Incremental Core-Drilling Method of Non-Destructive Determination of In-Situ Stresses in Concrete Structures,” Journal of Strain Analysis for Engineering Design, V. 45, No. 8, 2010, pp. 647-658. doi: 10.1177/030932471004500801
15. Mehrkar-Asl, S., “Concrete Stress Relief Coring: Theory and Practice,” Proceedings of the FIP First Symposium on Post Tensioned Concrete Structures, London, UK, 1988, pp. 596-576.
16. Hammerschmidt, S., “Development of a Procedure to Determine Internal Stresses in Concrete Bridge Members,” Kansas State University, Manhattan, KS, 2011.
17. “Tokoyo Measuring Instrument Lab,” https://tml.jp/. (last accessed July 1, 2020)
18. IS 456, “Plain and Reinforced Concrete – Code of Practice,” Bureau of Indian Standards, New Delhi, India, 2000.