Jiang hongbin¹ and Wang shilei²

1. Associate Professor, Structural Engineering, School of Civil Engineering, Harbin Institute of Technology , Harbin , 150090, China, 86282081@163.com
2. Master, Structural Engineering, School of Civil Engineering, Harbin Institute of Technology, Harbin, 150090, China, 86283116@163.com

ABSTRACT

In order to study the structural performance of a grouted concrete block masonry structure and the improvement of its seismic behaviour, experiments of seven grouted block wall specimens with hoop reinforcement located inside the concrete blocks and one grouted block masonry wall with concrete blocks (typical block wall) under axial compression load have been made. The parameters investigated include: the ratio of hoop reinforcement, the type and the space of hoop reinforcement. The experimental results indicate that the compressive bearing capacity and the ultimate deformation capacity of grouted block wall specimens with hoop reinforcement inside were improved significantly in comparison to the concrete block wall specimen. Based on the test results and analysis a calculation method for the compressive strength of hoop-reinforced blocks in grouted block masonry is proposed. The results of the experiment can be used to design practical structures.

KEYWORDS: restraint flange member; bearing capacity; distortion; volume ratio of hoop reinforcement

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