Performance of Precast Segmental Bamboo-Reinforced Concrete Columns with Bolted Connections: An Experimental Exploration
摘要
Prefabrication systems such as precast segmental concrete columns have become popular in recent years to accelerate construction speed. We performed an experimental study to investigate the load capacity and crack growth characteristics of precast segmental bamboo reinforced concrete (BRC) columns with bolted connections. Examinations were conducted on 18 specimens measuring 150 × 150 × 600 mm, composed of 6 reference columns (KK), 6 precast segmental columns with 4 bolted connections (KS4), and 6 precast segmental columns with 8 bolted connections (KS8). It was discovered that bamboo strips are promising to be used as reinforcement in precast segmental column with bolted connections since their load capacity ratio is close to one compared to the monolithic column. The first cracks in the axial tested specimens began from the top fiber and propagated to the middle of the columns, leading in a concrete compression failure in the columns. Additionally, monolithic columns have their cracks starting from the center of the span at the tension face and stretch up to the neutral axis in the flexural tested specimens, leading a flexural failure in the columns. Furthermore, a shear failure is indicated by precast segmental columns.