摘要
为了研究喷射钢纤维混凝土的力学性能,设计并完成三组喷射混凝土衬砌加载模型试验。研究表明,喷射钢纤维混凝土具有良好的抗裂性和韧性,在裂缝出现时,仍能承受荷载;在混凝土中适当增加钢纤维的掺量,会显著提高混凝土的断裂性能。利用ANSYS有限元软件模拟喷射钢纤维混凝土衬砌试件在某组试验破坏荷载作用下的受力情况显示:当直墙部位荷载较大和拱部应力集中时,对整个衬砌结构很不利。
In order to study the mechanical properties of the steel fiber reinforced sprayed concrete, three groups of lining loading model test were designed and accomplished. The results showed that, steel fiber reinforced sprayed concrete has good crack resistance and toughness, it can still resist the load when it has cracks and an appropriate steel fiber content can increase the concrete fracture properties. The sprayed steel fiber reinforced concrete lining specimens under a certain set of test loads was simulated by the ANSYS. The results showed that, the large load straight wall portion and arch stress concentration have a great harm to the entire lining structure.
出处
《混凝土与水泥制品》
2016年第10期53-55,共3页
China Concrete and Cement Products
关键词
喷射混凝土
衬砌结构
模型试验
数值模拟
Sprayed concrete
Lining structure
Model experimental
Numerical simulation
