Abstract：Engineered Cementitious Composite (ECC) has high ductility and characteristic of multi-micro-cracks under tension and shear loads. The concrete can be replaced with the ECC material in the steel-concrete continuous composite beam under negative moment to reduce the crack of concrete slab. The bending and cracking properties of steel-ECC composite beams are studied and compared . The experiments consist of 2 steel-ECC composite beams and 1 steel-concrete composite beams. The influence of reinforcement ratio on bending and cracking property is discussed. The study reveals that, when under negative moment, the rigidity of steel-ECC composite beam is higher than that of steel-concrete composite beam, while ductility decreases because of the effect of the ECC flange. Steel-ECC composite beams have excellent control over the development of the crack. Higher reinforcement ratio has better control over the crack. The method to calculate the bending capability and cracking load of steel-ECC composite beams is proposed. A basic model is put forward to calculate the deflection and crack width.
樊健生 施正捷 芶双科 聂鑫 张君 王振波. 钢-ECC组合梁负弯矩区受弯性能试验研究[J]. 土木工程学报, 2017, 50(4): 64-72.
Fan Jiansheng Shi Zhengjie Gou Shuangke Nie Xin Zhang Jun Wang Zhenbo. Experimental research on negative bending behavior of steel-ECC composite beams. 土木工程学报, 2017, 50(4): 64-72.
