Abstract
The purpose of the testing program described in this paper was to evaluate the benefits of triaxial confinement that occurs when the loaded area of a strut-and-tie model (STM) is surrounded by concrete on all sides. To achieve this goal, five full-scale beams were fabricated and tested at the Ferguson Structural Engineering Laboratory in Austin, TX. Specimens were tested with a span-depth ratio (a/A) of 1.85. Two ends of each beam were tested, resulting in a total of 10 tests. Eight tests were conducted on beams with a 21 × 42 in. (530 × 1070 mm) cross section, and two tests were conducted on beams with a 36 × 48 in. (910 × 1220 mm) cross section. The primary experimental variables were the size of the load- and support-bearing plates and the amount of web reinforcement. Based on the results of the testing program, it is recommended that the permissible nodal stresses of an STM be increased for nodes triaxially confined by concrete.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 709-717 |
| Number of pages | 9 |
| Journal | ACI Structural Journal |
| Volume | 107 |
| Issue number | 6 |
| State | Published - Nov 2010 |
| Externally published | Yes |
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Keywords
- Deep beam
- Nodal regions
- Strut-and-tie model
- Triaxial confinement
ASJC Scopus subject areas
- Building and Construction
- Civil and Structural Engineering
Cite this
Confinement of deep beam nodal regions. / Tuchscherer, Robin G; Birrcher, David; Huizinga, Matt; Bayrak, Oguzhan.
In: ACI Structural Journal, Vol. 107, No. 6, 11.2010, p. 709-717.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Confinement of deep beam nodal regions
AU - Tuchscherer, Robin G
AU - Birrcher, David
AU - Huizinga, Matt
AU - Bayrak, Oguzhan
PY - 2010/11
Y1 - 2010/11
N2 - The purpose of the testing program described in this paper was to evaluate the benefits of triaxial confinement that occurs when the loaded area of a strut-and-tie model (STM) is surrounded by concrete on all sides. To achieve this goal, five full-scale beams were fabricated and tested at the Ferguson Structural Engineering Laboratory in Austin, TX. Specimens were tested with a span-depth ratio (a/A) of 1.85. Two ends of each beam were tested, resulting in a total of 10 tests. Eight tests were conducted on beams with a 21 × 42 in. (530 × 1070 mm) cross section, and two tests were conducted on beams with a 36 × 48 in. (910 × 1220 mm) cross section. The primary experimental variables were the size of the load- and support-bearing plates and the amount of web reinforcement. Based on the results of the testing program, it is recommended that the permissible nodal stresses of an STM be increased for nodes triaxially confined by concrete.
AB - The purpose of the testing program described in this paper was to evaluate the benefits of triaxial confinement that occurs when the loaded area of a strut-and-tie model (STM) is surrounded by concrete on all sides. To achieve this goal, five full-scale beams were fabricated and tested at the Ferguson Structural Engineering Laboratory in Austin, TX. Specimens were tested with a span-depth ratio (a/A) of 1.85. Two ends of each beam were tested, resulting in a total of 10 tests. Eight tests were conducted on beams with a 21 × 42 in. (530 × 1070 mm) cross section, and two tests were conducted on beams with a 36 × 48 in. (910 × 1220 mm) cross section. The primary experimental variables were the size of the load- and support-bearing plates and the amount of web reinforcement. Based on the results of the testing program, it is recommended that the permissible nodal stresses of an STM be increased for nodes triaxially confined by concrete.
KW - Deep beam
KW - Nodal regions
KW - Strut-and-tie model
KW - Triaxial confinement
UR - http://www.scopus.com/inward/record.url?scp=78649552786&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649552786&partnerID=8YFLogxK
M3 - Article
VL - 107
SP - 709
EP - 717
JO - ACI Structural Journal
JF - ACI Structural Journal
SN - 0889-3241
IS - 6
ER -