混杂纤维混凝土应用在组合梁中的物理特性及对比实验研究  

Hybrid Fiber Reinforced Concrete Beams Used in Combination and Contrast the Physical Properties of Experimental Study

作　　者：周海波[1] 刘萍[1] 

机构地区：[1]河南城建学院,平顶山467000

出　　处：《科学技术与工程》2014年第9期247-252,共6页Science Technology and Engineering

摘　　要：为了进一步明确混杂纤维混凝土物理特性优势,首先对其组合结构中应用与承载力进行了计算分析,接着对受弯承载力的计算完成了修正提议,在混杂纤维混凝土梁承载力的计算中,建立了纤维布直线关系的材料力学模型,得出高性能纤维补强混凝土板不仅可以增强复合梁的承载力,且有利于减缓裂缝和提高组合梁的延性,在对混杂纤维混凝土的极限应变分析中得出其应变能达到1 500以上,可以有效提高组合梁的截面延性,综合分析可得纤维混凝土同普通混凝土相比其抗折强度明显提高40%左右,抗冲击韧性明显提高50%左右,韧性得到了大幅度的提高。通过与多种其他混凝土的实验特性比较,充分验证了上述特性优势。这一研究对纤维混凝土的推广应用具有显著的实际价值。In order to further clarify the advantages of hybrid fiber reinforced concrete physical characteristics, the application of the composite structure and bearing capacity were calculated and analyzed, and then on the cal- culation of flexural capacity to complete the modified proposal, hybrid fiber reinforced concrete beams in the calcu- lation of the bearing capacity. The establishment of a linear relationship between fiber cloth material mechanics model to arrive at high-performance fiber-reinforced concrete panels can not only enhance the bearing capacity of the composite beam, and is conducive to slow down the cracks and improve the ductility of composite beams, on the limits of hybrid fiber concrete draw its strain and strain analysis can reach 1 500 or more, can effectively improve the ductility of composite beam cross-section, a comprehensive analysis of fiber reinforced concrete can be obtained as compared with ordinary concrete flexural strength significantly increased its about 40%, impact toughness signifi- cantly increased by 50 percent toughness has been greatly improved. Through experiments with a variety of other characteristics of concrete compared to fully verify the advantages of the above characteristics. The study on the pro- motion and application of fiber reinforced concrete has significant practical value.

关 键 词：混杂纤维 混凝土 组合梁 裂缝 韧性 

分 类 号：TU528.572[建筑科学—建筑技术科学]