Introduction of Regional Confined Concrete

Abstract:

Based on the research of normal confined concrete (NCC), regional confined concrete (RCC) was proposed years ago by authors. With the introduction of regional confinement concept, different mechanical properties, failure mode and energy dispatching property developed in the regional confined concrete elements. Experimental researches have been carried out during the past years on the elements under various loads, including beams under moments, short beams under shears, short columns under axial loads, middle long columns under eccentric loads, middle long columns under axial loads and columns under cycling loads. Experimental results indicated that RCC elements are more ductile, have better load carrying capacity and larger energy dispatch capacity than that of NCC elements. Stress-strain relationship of RCC, integrated confinement factor and some computation expressions for elements under various loads are proposed. Pilot projects have been conducted and regional confined concrete structures are ready for service.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 697-703
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.697
• Online since: March 2013
• Authors: Xin Ming Cao, Xian Wu Huang, Zhi Gang Mo, Hong Yuan Tian
• Keywords: Integrated Confinement Factor, Regional Confined Concrete (RCC), Service, Stress-Strain Relationship of RCC

References

[1] Xinming Cao, A Simple Analysis Of Regional Confined Concrete [J], Earthquake Resistant Engineering and Retrofitting, 30（5）, 112-115, Oct. 2008 (in Chinese).

[2] Xinming Cao. Influence of longitudinal steel on ductility of square columns under axial load [J] Journal of Guizhou University of Technology. Guiyang China. 2002. vol. 31（5）, P68-74.

[3] Jie Bai, Xinming Cao, Analysis of influence of confined concrete on moment elements. [J] Information of China Construction, Vol（3）, 49-51, 2005, Beijing （in Chinese）.

[4] Xinming Cao,. Experimental research on regional confined concrete columns under compression. In Challenges, Opportunities, and Solutions in Structural Engineering and Construction, Proceedings of the 5th Intel. Strut. Engrg. and Constru. Ghafoori (ed). 479-484. Conf., Las Vegas, Sept 22-25, CRC Press/ Balkema, (2009).

DOI: 10.1201/9780203859926.ch76

[5] Xinming. Cao, Lilie. Yang, Tingjian Ren, Linfeng. Wang, Mechanical Property Analysis of Regional Confined Square Concrete Column under Axial Load, [P] Proceedings of The Second International Forum on Advances in Structural Engineering, 556-562, 2008 , Dalian China.

[6] Xinming Cao, Lilie Yang, Tao Liang, Qun Ran, Experimental Research on Regional Confined Concrete Columns under Super-High Axial Compression Ratios, Research, Development, and Practice in Structural Engineering and Construction, proceedings of ASEC-SEC-1, 179-284, WA, Perth, Nov. 28-30, Research Publishing, (2012).

DOI: 10.3850/978-981-08-7920-4_st-75-0228