Deformability design of high-performance concrete beams

Ho, Johnny Ching Ming (2013) Deformability design of high-performance concrete beams. Structural Design of Tall and Special Buildings, 22 9: 729-748. doi:10.1002/tal.728

Author Ho, Johnny Ching Ming
Title Deformability design of high-performance concrete beams
Journal name Structural Design of Tall and Special Buildings   Check publisher's open access policy
ISSN 1541-7794
Publication date 2013-06-25
Sub-type Article (original research)
DOI 10.1002/tal.728
Open Access Status
Volume 22
Issue 9
Start page 729
End page 748
Total pages 20
Place of publication West Sussex, United Kingdom
Publisher John Wiley & Sons
Language eng
Subject 2205 Civil and Structural Engineering
2215 Building and Construction
2216 Architecture
Abstract The use of high-performance materials (HPMs) such as high-strength concrete (HSC) and high-strength steel (HSS) is becoming more popular in the construction of beams and columns of tall buildings. These HPMs not only increase the stiffness and decrease the strength-to-weight ratio, but also provide a more sustainable construction method by minimising the construction materials needed. However, HSC and HSS are more brittle than normal-strength concrete and steel, respectively. Therefore, it will adversely affect the deformability of concrete beams. To evaluate the pros and cons of adopting HPM in beam design, the author will investigate the flexural strength and deformability of concrete beams made of HPMs. The deformability in this study is expressed in normalised rotation capacity and investigated by a parametric study using nonlinear moment-curvature analysis taking into account the degree of reinforcement, confining pressure, concrete and steel yield strength. From the results, it is evident that the deformability of concrete beams increases as the degree of reinforcement decreases or confining pressure increases. However, the effects of concrete and steel yield strength depend on other factors. For practical design purpose, charts and formulas are produced for designing high-performance concrete beams to meet with specified flexural strength and deformability requirement.
Keyword Beams
High-performance materials
High-strength concrete
High-strength steel
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
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Created: Thu, 23 Oct 2014, 17:25:39 EST by Johnny Ho on behalf of School of Civil Engineering